diff options
Diffstat (limited to 'SOURCES/patch-5.14-redhat.patch')
| -rw-r--r-- | SOURCES/patch-5.14-redhat.patch | 3142 |
1 files changed, 3142 insertions, 0 deletions
diff --git a/SOURCES/patch-5.14-redhat.patch b/SOURCES/patch-5.14-redhat.patch new file mode 100644 index 0000000..07e15e0 --- /dev/null +++ b/SOURCES/patch-5.14-redhat.patch @@ -0,0 +1,3142 @@ + arch/arm/Kconfig | 4 +- + arch/arm64/Kconfig | 3 +- + .../boot/dts/rockchip/rk3399-pinebook-pro.dts | 6 +- + arch/arm64/kernel/acpi.c | 2 +- + arch/s390/include/asm/ipl.h | 1 + + arch/s390/kernel/ipl.c | 5 + + arch/s390/kernel/setup.c | 4 + + arch/x86/kernel/setup.c | 22 +- + crypto/rng.c | 73 ++- + drivers/acpi/apei/hest.c | 8 + + drivers/acpi/irq.c | 17 +- + drivers/acpi/scan.c | 9 + + drivers/acpi/x86/s2idle.c | 67 +-- + drivers/ata/libahci.c | 18 + + drivers/char/ipmi/ipmi_dmi.c | 15 + + drivers/char/ipmi/ipmi_msghandler.c | 16 +- + drivers/char/random.c | 115 +++++ + drivers/firmware/efi/Makefile | 1 + + drivers/firmware/efi/efi.c | 124 +++-- + drivers/firmware/efi/secureboot.c | 38 ++ + drivers/hid/hid-rmi.c | 64 --- + drivers/hwtracing/coresight/coresight-etm4x-core.c | 19 + + drivers/input/rmi4/rmi_driver.c | 124 +++-- + drivers/iommu/iommu.c | 22 + + drivers/net/wireguard/main.c | 6 + + drivers/pci/quirks.c | 24 + + drivers/usb/core/hub.c | 7 + + fs/xfs/xfs_super.c | 8 - + include/linux/efi.h | 22 +- + include/linux/lsm_hook_defs.h | 2 + + include/linux/lsm_hooks.h | 6 + + include/linux/random.h | 7 + + include/linux/rmi.h | 1 + + include/linux/security.h | 5 + + init/Kconfig | 2 +- + kernel/module_signing.c | 9 +- + mm/cma.c | 10 + + security/integrity/platform_certs/load_uefi.c | 6 +- + security/lockdown/Kconfig | 13 + + security/lockdown/lockdown.c | 1 + + security/security.c | 6 + + tools/testing/selftests/bpf/Makefile | 1 - + .../selftests/bpf/prog_tests/linked_funcs.c | 42 -- + .../testing/selftests/bpf/prog_tests/linked_maps.c | 30 -- + .../testing/selftests/bpf/prog_tests/linked_vars.c | 43 -- + tools/testing/selftests/bpf/progs/bpf_cubic.c | 545 --------------------- + tools/testing/selftests/bpf/progs/bpf_dctcp.c | 224 --------- + .../testing/selftests/bpf/progs/kfunc_call_test.c | 47 -- + .../selftests/bpf/progs/kfunc_call_test_subprog.c | 42 -- + tools/testing/selftests/bpf/progs/linked_funcs1.c | 73 --- + tools/testing/selftests/bpf/progs/linked_funcs2.c | 73 --- + tools/testing/selftests/bpf/progs/linked_maps2.c | 76 --- + tools/testing/selftests/bpf/progs/linked_vars1.c | 54 -- + tools/testing/selftests/bpf/progs/linked_vars2.c | 55 --- + 54 files changed, 694 insertions(+), 1523 deletions(-) + +diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig +index 2fb7012c3246..47718b4f2f75 100644 +--- a/arch/arm/Kconfig ++++ b/arch/arm/Kconfig +@@ -1474,9 +1474,9 @@ config HIGHMEM + If unsure, say n. + + config HIGHPTE +- bool "Allocate 2nd-level pagetables from highmem" if EXPERT ++ bool "Allocate 2nd-level pagetables from highmem" + depends on HIGHMEM +- default y ++ default n + help + The VM uses one page of physical memory for each page table. + For systems with a lot of processes, this can use a lot of +diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig +index 62c3c1d2190f..9ef6bb1d5b0c 100644 +--- a/arch/arm64/Kconfig ++++ b/arch/arm64/Kconfig +@@ -915,7 +915,7 @@ endchoice + + config ARM64_FORCE_52BIT + bool "Force 52-bit virtual addresses for userspace" +- depends on ARM64_VA_BITS_52 && EXPERT ++ depends on ARM64_VA_BITS_52 + help + For systems with 52-bit userspace VAs enabled, the kernel will attempt + to maintain compatibility with older software by providing 48-bit VAs +@@ -1156,6 +1156,7 @@ config XEN + config FORCE_MAX_ZONEORDER + int + default "14" if ARM64_64K_PAGES ++ default "13" if (ARCH_THUNDER && !ARM64_64K_PAGES) + default "12" if ARM64_16K_PAGES + default "11" + help +diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts +index 2b5f001ff4a6..dae8c252bc2b 100644 +--- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts ++++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts +@@ -385,10 +385,6 @@ mains_charger: dc-charger { + }; + }; + +-&cdn_dp { +- status = "okay"; +-}; +- + &cpu_b0 { + cpu-supply = <&vdd_cpu_b>; + }; +@@ -711,7 +707,7 @@ fusb0: fusb30x@22 { + + connector { + compatible = "usb-c-connector"; +- data-role = "host"; ++ data-role = "dual"; + label = "USB-C"; + op-sink-microwatt = <1000000>; + power-role = "dual"; +diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c +index f3851724fe35..cac21da49455 100644 +--- a/arch/arm64/kernel/acpi.c ++++ b/arch/arm64/kernel/acpi.c +@@ -40,7 +40,7 @@ int acpi_pci_disabled = 1; /* skip ACPI PCI scan and IRQ initialization */ + EXPORT_SYMBOL(acpi_pci_disabled); + + static bool param_acpi_off __initdata; +-static bool param_acpi_on __initdata; ++static bool param_acpi_on __initdata = true; + static bool param_acpi_force __initdata; + + static int __init parse_acpi(char *arg) +diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h +index a9e2c7295b35..6ff11f3a2d47 100644 +--- a/arch/s390/include/asm/ipl.h ++++ b/arch/s390/include/asm/ipl.h +@@ -127,6 +127,7 @@ int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, + unsigned char flags, unsigned short cert); + int ipl_report_add_certificate(struct ipl_report *report, void *key, + unsigned long addr, unsigned long len); ++bool ipl_get_secureboot(void); + + /* + * DIAG 308 support +diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c +index 911cd3912351..caae31c04561 100644 +--- a/arch/s390/kernel/ipl.c ++++ b/arch/s390/kernel/ipl.c +@@ -2215,3 +2215,8 @@ int ipl_report_free(struct ipl_report *report) + } + + #endif ++ ++bool ipl_get_secureboot(void) ++{ ++ return !!ipl_secure_flag; ++} +diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c +index ee23908f1b96..0273125cdfba 100644 +--- a/arch/s390/kernel/setup.c ++++ b/arch/s390/kernel/setup.c +@@ -49,6 +49,7 @@ + #include <linux/memory.h> + #include <linux/compat.h> + #include <linux/start_kernel.h> ++#include <linux/security.h> + #include <linux/hugetlb.h> + + #include <asm/boot_data.h> +@@ -1030,6 +1031,9 @@ void __init setup_arch(char **cmdline_p) + + log_component_list(); + ++ if (ipl_get_secureboot()) ++ security_lock_kernel_down("Secure IPL mode", LOCKDOWN_INTEGRITY_MAX); ++ + /* Have one command line that is parsed and saved in /proc/cmdline */ + /* boot_command_line has been already set up in early.c */ + *cmdline_p = boot_command_line; +diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c +index bff3a784aec5..4e13c3ee5723 100644 +--- a/arch/x86/kernel/setup.c ++++ b/arch/x86/kernel/setup.c +@@ -19,6 +19,7 @@ + #include <linux/root_dev.h> + #include <linux/hugetlb.h> + #include <linux/tboot.h> ++#include <linux/security.h> + #include <linux/usb/xhci-dbgp.h> + #include <linux/static_call.h> + #include <linux/swiotlb.h> +@@ -936,6 +937,13 @@ void __init setup_arch(char **cmdline_p) + if (efi_enabled(EFI_BOOT)) + efi_init(); + ++ efi_set_secure_boot(boot_params.secure_boot); ++ ++#ifdef CONFIG_LOCK_DOWN_IN_EFI_SECURE_BOOT ++ if (efi_enabled(EFI_SECURE_BOOT)) ++ security_lock_kernel_down("EFI Secure Boot mode", LOCKDOWN_INTEGRITY_MAX); ++#endif ++ + dmi_setup(); + + /* +@@ -1101,19 +1109,7 @@ void __init setup_arch(char **cmdline_p) + /* Allocate bigger log buffer */ + setup_log_buf(1); + +- if (efi_enabled(EFI_BOOT)) { +- switch (boot_params.secure_boot) { +- case efi_secureboot_mode_disabled: +- pr_info("Secure boot disabled\n"); +- break; +- case efi_secureboot_mode_enabled: +- pr_info("Secure boot enabled\n"); +- break; +- default: +- pr_info("Secure boot could not be determined\n"); +- break; +- } +- } ++ efi_set_secure_boot(boot_params.secure_boot); + + reserve_initrd(); + +diff --git a/crypto/rng.c b/crypto/rng.c +index fea082b25fe4..50a9d040bed1 100644 +--- a/crypto/rng.c ++++ b/crypto/rng.c +@@ -11,14 +11,17 @@ + #include <linux/atomic.h> + #include <crypto/internal/rng.h> + #include <linux/err.h> ++#include <linux/fips.h> ++#include <linux/kernel.h> + #include <linux/module.h> + #include <linux/mutex.h> + #include <linux/random.h> + #include <linux/seq_file.h> ++#include <linux/sched.h> ++#include <linux/sched/signal.h> + #include <linux/slab.h> + #include <linux/string.h> + #include <linux/cryptouser.h> +-#include <linux/compiler.h> + #include <net/netlink.h> + + #include "internal.h" +@@ -224,5 +227,73 @@ void crypto_unregister_rngs(struct rng_alg *algs, int count) + } + EXPORT_SYMBOL_GPL(crypto_unregister_rngs); + ++static ssize_t crypto_devrandom_read(void __user *buf, size_t buflen) ++{ ++ u8 tmp[256]; ++ ssize_t ret; ++ ++ if (!buflen) ++ return 0; ++ ++ ret = crypto_get_default_rng(); ++ if (ret) ++ return ret; ++ ++ for (;;) { ++ int err; ++ int i; ++ ++ i = min_t(int, buflen, sizeof(tmp)); ++ err = crypto_rng_get_bytes(crypto_default_rng, tmp, i); ++ if (err) { ++ ret = err; ++ break; ++ } ++ ++ if (copy_to_user(buf, tmp, i)) { ++ ret = -EFAULT; ++ break; ++ } ++ ++ buflen -= i; ++ buf += i; ++ ret += i; ++ ++ if (!buflen) ++ break; ++ ++ if (need_resched()) { ++ if (signal_pending(current)) ++ break; ++ schedule(); ++ } ++ } ++ ++ crypto_put_default_rng(); ++ memzero_explicit(tmp, sizeof(tmp)); ++ ++ return ret; ++} ++ ++static const struct random_extrng crypto_devrandom_rng = { ++ .extrng_read = crypto_devrandom_read, ++ .owner = THIS_MODULE, ++}; ++ ++static int __init crypto_rng_init(void) ++{ ++ if (fips_enabled) ++ random_register_extrng(&crypto_devrandom_rng); ++ return 0; ++} ++ ++static void __exit crypto_rng_exit(void) ++{ ++ random_unregister_extrng(); ++} ++ ++late_initcall(crypto_rng_init); ++module_exit(crypto_rng_exit); ++ + MODULE_LICENSE("GPL"); + MODULE_DESCRIPTION("Random Number Generator"); +diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c +index 277f00b288d1..adbce15c273d 100644 +--- a/drivers/acpi/apei/hest.c ++++ b/drivers/acpi/apei/hest.c +@@ -94,6 +94,14 @@ int apei_hest_parse(apei_hest_func_t func, void *data) + if (hest_disable || !hest_tab) + return -EINVAL; + ++#ifdef CONFIG_ARM64 ++ /* Ignore broken firmware */ ++ if (!strncmp(hest_tab->header.oem_id, "HPE ", 6) && ++ !strncmp(hest_tab->header.oem_table_id, "ProLiant", 8) && ++ MIDR_IMPLEMENTOR(read_cpuid_id()) == ARM_CPU_IMP_APM) ++ return -EINVAL; ++#endif ++ + hest_hdr = (struct acpi_hest_header *)(hest_tab + 1); + for (i = 0; i < hest_tab->error_source_count; i++) { + len = hest_esrc_len(hest_hdr); +diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c +index c68e694fca26..146cba5ae5bc 100644 +--- a/drivers/acpi/irq.c ++++ b/drivers/acpi/irq.c +@@ -130,6 +130,7 @@ struct acpi_irq_parse_one_ctx { + unsigned int index; + unsigned long *res_flags; + struct irq_fwspec *fwspec; ++ bool skip_producer_check; + }; + + /** +@@ -201,7 +202,8 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares, + return AE_CTRL_TERMINATE; + case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: + eirq = &ares->data.extended_irq; +- if (eirq->producer_consumer == ACPI_PRODUCER) ++ if (!ctx->skip_producer_check && ++ eirq->producer_consumer == ACPI_PRODUCER) + return AE_OK; + if (ctx->index >= eirq->interrupt_count) { + ctx->index -= eirq->interrupt_count; +@@ -236,8 +238,19 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares, + static int acpi_irq_parse_one(acpi_handle handle, unsigned int index, + struct irq_fwspec *fwspec, unsigned long *flags) + { +- struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec }; ++ struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec, false }; + ++ /* ++ * Firmware on arm64-based HPE m400 platform incorrectly marks ++ * its UART interrupt as ACPI_PRODUCER rather than ACPI_CONSUMER. ++ * Don't do the producer/consumer check for that device. ++ */ ++ if (IS_ENABLED(CONFIG_ARM64)) { ++ struct acpi_device *adev = acpi_bus_get_acpi_device(handle); ++ ++ if (adev && !strcmp(acpi_device_hid(adev), "APMC0D08")) ++ ctx.skip_producer_check = true; ++ } + acpi_walk_resources(handle, METHOD_NAME__CRS, acpi_irq_parse_one_cb, &ctx); + return ctx.rc; + } +diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c +index b24513ec3fae..8308569f66e0 100644 +--- a/drivers/acpi/scan.c ++++ b/drivers/acpi/scan.c +@@ -1721,6 +1721,15 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device) + if (!acpi_match_device_ids(device, i2c_multi_instantiate_ids)) + return false; + ++ /* ++ * Firmware on some arm64 X-Gene platforms will make the UART ++ * device appear as both a UART and a slave of that UART. Just ++ * bail out here for X-Gene UARTs. ++ */ ++ if (IS_ENABLED(CONFIG_ARM64) && ++ !strcmp(acpi_device_hid(device), "APMC0D08")) ++ return false; ++ + INIT_LIST_HEAD(&resource_list); + acpi_dev_get_resources(device, &resource_list, + acpi_check_serial_bus_slave, +diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c +index 3a308461246a..bd92b549fd5a 100644 +--- a/drivers/acpi/x86/s2idle.c ++++ b/drivers/acpi/x86/s2idle.c +@@ -449,25 +449,30 @@ int acpi_s2idle_prepare_late(void) + if (pm_debug_messages_on) + lpi_check_constraints(); + +- if (lps0_dsm_func_mask_microsoft > 0) { ++ /* Screen off */ ++ if (lps0_dsm_func_mask > 0) ++ acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ? ++ ACPI_LPS0_SCREEN_OFF_AMD : ++ ACPI_LPS0_SCREEN_OFF, ++ lps0_dsm_func_mask, lps0_dsm_guid); ++ ++ if (lps0_dsm_func_mask_microsoft > 0) + acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_ENTRY, +- lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); ++ ++ /* LPS0 entry */ ++ if (lps0_dsm_func_mask > 0) ++ acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ? ++ ACPI_LPS0_ENTRY_AMD : ++ ACPI_LPS0_ENTRY, ++ lps0_dsm_func_mask, lps0_dsm_guid); ++ if (lps0_dsm_func_mask_microsoft > 0) { + acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); +- } else if (acpi_s2idle_vendor_amd()) { +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF_AMD, +- lps0_dsm_func_mask, lps0_dsm_guid); +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY_AMD, +- lps0_dsm_func_mask, lps0_dsm_guid); +- } else { +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_OFF, +- lps0_dsm_func_mask, lps0_dsm_guid); +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_ENTRY, +- lps0_dsm_func_mask, lps0_dsm_guid); ++ /* modern standby entry */ ++ acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_ENTRY, ++ lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); + } +- + return 0; + } + +@@ -476,24 +481,30 @@ void acpi_s2idle_restore_early(void) + if (!lps0_device_handle || sleep_no_lps0) + return; + +- if (lps0_dsm_func_mask_microsoft > 0) { +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT, +- lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); ++ /* Modern standby exit */ ++ if (lps0_dsm_func_mask_microsoft > 0) + acpi_sleep_run_lps0_dsm(ACPI_LPS0_MS_EXIT, + lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON, +- lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); +- } else if (acpi_s2idle_vendor_amd()) { +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT_AMD, +- lps0_dsm_func_mask, lps0_dsm_guid); +- acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON_AMD, +- lps0_dsm_func_mask, lps0_dsm_guid); +- } else { ++ ++ /* LPS0 exit */ ++ if (lps0_dsm_func_mask > 0) ++ acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ? ++ ACPI_LPS0_EXIT_AMD : ++ ACPI_LPS0_EXIT, ++ lps0_dsm_func_mask, lps0_dsm_guid); ++ if (lps0_dsm_func_mask_microsoft > 0) + acpi_sleep_run_lps0_dsm(ACPI_LPS0_EXIT, +- lps0_dsm_func_mask, lps0_dsm_guid); ++ lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); ++ ++ /* Screen on */ ++ if (lps0_dsm_func_mask_microsoft > 0) + acpi_sleep_run_lps0_dsm(ACPI_LPS0_SCREEN_ON, +- lps0_dsm_func_mask, lps0_dsm_guid); +- } ++ lps0_dsm_func_mask_microsoft, lps0_dsm_guid_microsoft); ++ if (lps0_dsm_func_mask > 0) ++ acpi_sleep_run_lps0_dsm(acpi_s2idle_vendor_amd() ? ++ ACPI_LPS0_SCREEN_ON_AMD : ++ ACPI_LPS0_SCREEN_ON, ++ lps0_dsm_func_mask, lps0_dsm_guid); + } + + static const struct platform_s2idle_ops acpi_s2idle_ops_lps0 = { +diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c +index fec2e9754aed..bea4e2973259 100644 +--- a/drivers/ata/libahci.c ++++ b/drivers/ata/libahci.c +@@ -671,6 +671,24 @@ int ahci_stop_engine(struct ata_port *ap) + tmp &= ~PORT_CMD_START; + writel(tmp, port_mmio + PORT_CMD); + ++#ifdef CONFIG_ARM64 ++ /* Rev Ax of Cavium CN99XX needs a hack for port stop */ ++ if (dev_is_pci(ap->host->dev) && ++ to_pci_dev(ap->host->dev)->vendor == 0x14e4 && ++ to_pci_dev(ap->host->dev)->device == 0x9027 && ++ midr_is_cpu_model_range(read_cpuid_id(), ++ MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_VULCAN), ++ MIDR_CPU_VAR_REV(0, 0), ++ MIDR_CPU_VAR_REV(0, MIDR_REVISION_MASK))) { ++ tmp = readl(hpriv->mmio + 0x8000); ++ udelay(100); ++ writel(tmp | (1 << 26), hpriv->mmio + 0x8000); ++ udelay(100); ++ writel(tmp & ~(1 << 26), hpriv->mmio + 0x8000); ++ dev_warn(ap->host->dev, "CN99XX SATA reset workaround applied\n"); ++ } ++#endif ++ + /* wait for engine to stop. This could be as long as 500 msec */ + tmp = ata_wait_register(ap, port_mmio + PORT_CMD, + PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500); +diff --git a/drivers/char/ipmi/ipmi_dmi.c b/drivers/char/ipmi/ipmi_dmi.c +index bbf7029e224b..cf7faa970dd6 100644 +--- a/drivers/char/ipmi/ipmi_dmi.c ++++ b/drivers/char/ipmi/ipmi_dmi.c +@@ -215,6 +215,21 @@ static int __init scan_for_dmi_ipmi(void) + { + const struct dmi_device *dev = NULL; + ++#ifdef CONFIG_ARM64 ++ /* RHEL-only ++ * If this is ARM-based HPE m400, return now, because that platform ++ * reports the host-side ipmi address as intel port-io space, which ++ * does not exist in the ARM architecture. ++ */ ++ const char *dmistr = dmi_get_system_info(DMI_PRODUCT_NAME); ++ ++ if (dmistr && (strcmp("ProLiant m400 Server", dmistr) == 0)) { ++ pr_debug("%s does not support host ipmi\n", dmistr); ++ return 0; ++ } ++ /* END RHEL-only */ ++#endif ++ + while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) + dmi_decode_ipmi((const struct dmi_header *) dev->device_data); + +diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c +index e96cb5c4f97a..d645460fe8a9 100644 +--- a/drivers/char/ipmi/ipmi_msghandler.c ++++ b/drivers/char/ipmi/ipmi_msghandler.c +@@ -35,6 +35,7 @@ + #include <linux/uuid.h> + #include <linux/nospec.h> + #include <linux/vmalloc.h> ++#include <linux/dmi.h> + #include <linux/delay.h> + + #define IPMI_DRIVER_VERSION "39.2" +@@ -5160,8 +5161,21 @@ static int __init ipmi_init_msghandler_mod(void) + { + int rv; + +- pr_info("version " IPMI_DRIVER_VERSION "\n"); ++#ifdef CONFIG_ARM64 ++ /* RHEL-only ++ * If this is ARM-based HPE m400, return now, because that platform ++ * reports the host-side ipmi address as intel port-io space, which ++ * does not exist in the ARM architecture. ++ */ ++ const char *dmistr = dmi_get_system_info(DMI_PRODUCT_NAME); + ++ if (dmistr && (strcmp("ProLiant m400 Server", dmistr) == 0)) { ++ pr_debug("%s does not support host ipmi\n", dmistr); ++ return -ENOSYS; ++ } ++ /* END RHEL-only */ ++#endif ++ pr_info("version " IPMI_DRIVER_VERSION "\n"); + mutex_lock(&ipmi_interfaces_mutex); + rv = ipmi_register_driver(); + mutex_unlock(&ipmi_interfaces_mutex); +diff --git a/drivers/char/random.c b/drivers/char/random.c +index 605969ed0f96..4d51f1c67675 100644 +--- a/drivers/char/random.c ++++ b/drivers/char/random.c +@@ -335,6 +335,7 @@ + #include <linux/syscalls.h> + #include <linux/completion.h> + #include <linux/uuid.h> ++#include <linux/rcupdate.h> + #include <crypto/chacha.h> + #include <crypto/sha1.h> + +@@ -349,6 +350,11 @@ + + /* #define ADD_INTERRUPT_BENCH */ + ++/* ++ * Hook for external RNG. ++ */ ++static const struct random_extrng __rcu *extrng; ++ + /* + * Configuration information + */ +@@ -481,6 +487,9 @@ static int ratelimit_disable __read_mostly; + module_param_named(ratelimit_disable, ratelimit_disable, int, 0644); + MODULE_PARM_DESC(ratelimit_disable, "Disable random ratelimit suppression"); + ++static const struct file_operations extrng_random_fops; ++static const struct file_operations extrng_urandom_fops; ++ + /********************************************************************** + * + * OS independent entropy store. Here are the functions which handle +@@ -1858,6 +1867,13 @@ random_poll(struct file *file, poll_table * wait) + return mask; + } + ++static __poll_t ++extrng_poll(struct file *file, poll_table * wait) ++{ ++ /* extrng pool is always full, always read, no writes */ ++ return EPOLLIN | EPOLLRDNORM; ++} ++ + static int + write_pool(struct entropy_store *r, const char __user *buffer, size_t count) + { +@@ -1961,7 +1977,58 @@ static int random_fasync(int fd, struct file *filp, int on) + return fasync_helper(fd, filp, on, &fasync); + } + ++static int random_open(struct inode *inode, struct file *filp) ++{ ++ const struct random_extrng *rng; ++ ++ rcu_read_lock(); ++ rng = rcu_dereference(extrng); ++ if (rng && !try_module_get(rng->owner)) ++ rng = NULL; ++ rcu_read_unlock(); ++ ++ if (!rng) ++ return 0; ++ ++ filp->f_op = &extrng_random_fops; ++ filp->private_data = rng->owner; ++ ++ return 0; ++} ++ ++static int urandom_open(struct inode *inode, struct file *filp) ++{ ++ const struct random_extrng *rng; ++ ++ rcu_read_lock(); ++ rng = rcu_dereference(extrng); ++ if (rng && !try_module_get(rng->owner)) ++ rng = NULL; ++ rcu_read_unlock(); ++ ++ if (!rng) ++ return 0; ++ ++ filp->f_op = &extrng_urandom_fops; ++ filp->private_data = rng->owner; ++ ++ return 0; ++} ++ ++static int extrng_release(struct inode *inode, struct file *filp) ++{ ++ module_put(filp->private_data); ++ return 0; ++} ++ ++static ssize_t ++extrng_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) ++{ ++ return rcu_dereference_raw(extrng)->extrng_read(buf, nbytes); ++} ++ + const struct file_operations random_fops = { ++ .open = random_open, + .read = random_read, + .write = random_write, + .poll = random_poll, +@@ -1972,6 +2039,7 @@ const struct file_operations random_fops = { + }; + + const struct file_operations urandom_fops = { ++ .open = urandom_open, + .read = urandom_read, + .write = random_write, + .unlocked_ioctl = random_ioctl, +@@ -1980,9 +2048,31 @@ const struct file_operations urandom_fops = { + .llseek = noop_llseek, + }; + ++static const struct file_operations extrng_random_fops = { ++ .open = random_open, ++ .read = extrng_read, ++ .write = random_write, ++ .poll = extrng_poll, ++ .unlocked_ioctl = random_ioctl, ++ .fasync = random_fasync, ++ .llseek = noop_llseek, ++ .release = extrng_release, ++}; ++ ++static const struct file_operations extrng_urandom_fops = { ++ .open = urandom_open, ++ .read = extrng_read, ++ .write = random_write, ++ .unlocked_ioctl = random_ioctl, ++ .fasync = random_fasync, ++ .llseek = noop_llseek, ++ .release = extrng_release, ++}; ++ + SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count, + unsigned int, flags) + { ++ const struct random_extrng *rng; + int ret; + + if (flags & ~(GRND_NONBLOCK|GRND_RANDOM|GRND_INSECURE)) +@@ -1998,6 +2088,18 @@ SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count, + if (count > INT_MAX) + count = INT_MAX; + ++ rcu_read_lock(); ++ rng = rcu_dereference(extrng); ++ if (rng && !try_module_get(rng->owner)) ++ rng = NULL; ++ rcu_read_unlock(); ++ ++ if (rng) { ++ ret = rng->extrng_read(buf, count); ++ module_put(rng->owner); ++ return ret; ++ } ++ + if (!(flags & GRND_INSECURE) && !crng_ready()) { + if (flags & GRND_NONBLOCK) + return -EAGAIN; +@@ -2303,3 +2405,16 @@ void add_bootloader_randomness(const void *buf, unsigned int size) + add_device_randomness(buf, size); + } + EXPORT_SYMBOL_GPL(add_bootloader_randomness); ++ ++void random_register_extrng(const struct random_extrng *rng) ++{ ++ rcu_assign_pointer(extrng, rng); ++} ++EXPORT_SYMBOL_GPL(random_register_extrng); ++ ++void random_unregister_extrng(void) ++{ ++ RCU_INIT_POINTER(extrng, NULL); ++ synchronize_rcu(); ++} ++EXPORT_SYMBOL_GPL(random_unregister_extrng); +diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile +index 467e94259679..9b6f5b8e5397 100644 +--- a/drivers/firmware/efi/Makefile ++++ b/drivers/firmware/efi/Makefile +@@ -28,6 +28,7 @@ obj-$(CONFIG_EFI_FAKE_MEMMAP) += fake_map.o + obj-$(CONFIG_EFI_BOOTLOADER_CONTROL) += efibc.o + obj-$(CONFIG_EFI_TEST) += test/ + obj-$(CONFIG_EFI_DEV_PATH_PARSER) += dev-path-parser.o ++obj-$(CONFIG_EFI) += secureboot.o + obj-$(CONFIG_APPLE_PROPERTIES) += apple-properties.o + obj-$(CONFIG_EFI_RCI2_TABLE) += rci2-table.o + obj-$(CONFIG_EFI_EMBEDDED_FIRMWARE) += embedded-firmware.o +diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c +index 847f33ffc4ae..363037f8eaf8 100644 +--- a/drivers/firmware/efi/efi.c ++++ b/drivers/firmware/efi/efi.c +@@ -31,6 +31,7 @@ + #include <linux/ucs2_string.h> + #include <linux/memblock.h> + #include <linux/security.h> ++#include <linux/bsearch.h> + + #include <asm/early_ioremap.h> + +@@ -841,40 +842,101 @@ int efi_mem_type(unsigned long phys_addr) + } + #endif + ++struct efi_error_code { ++ efi_status_t status; ++ int errno; ++ const char *description; ++}; ++ ++static const struct efi_error_code efi_error_codes[] = { ++ { EFI_SUCCESS, 0, "Success"}, ++#if 0 ++ { EFI_LOAD_ERROR, -EPICK_AN_ERRNO, "Load Error"}, ++#endif ++ { EFI_INVALID_PARAMETER, -EINVAL, "Invalid Parameter"}, ++ { EFI_UNSUPPORTED, -ENOSYS, "Unsupported"}, ++ { EFI_BAD_BUFFER_SIZE, -ENOSPC, "Bad Buffer Size"}, ++ { EFI_BUFFER_TOO_SMALL, -ENOSPC, "Buffer Too Small"}, ++ { EFI_NOT_READY, -EAGAIN, "Not Ready"}, ++ { EFI_DEVICE_ERROR, -EIO, "Device Error"}, ++ { EFI_WRITE_PROTECTED, -EROFS, "Write Protected"}, ++ { EFI_OUT_OF_RESOURCES, -ENOMEM, "Out of Resources"}, ++#if 0 ++ { EFI_VOLUME_CORRUPTED, -EPICK_AN_ERRNO, "Volume Corrupt"}, ++ { EFI_VOLUME_FULL, -EPICK_AN_ERRNO, "Volume Full"}, ++ { EFI_NO_MEDIA, -EPICK_AN_ERRNO, "No Media"}, ++ { EFI_MEDIA_CHANGED, -EPICK_AN_ERRNO, "Media changed"}, ++#endif ++ { EFI_NOT_FOUND, -ENOENT, "Not Found"}, ++#if 0 ++ { EFI_ACCESS_DENIED, -EPICK_AN_ERRNO, "Access Denied"}, ++ { EFI_NO_RESPONSE, -EPICK_AN_ERRNO, "No Response"}, ++ { EFI_NO_MAPPING, -EPICK_AN_ERRNO, "No mapping"}, ++ { EFI_TIMEOUT, -EPICK_AN_ERRNO, "Time out"}, ++ { EFI_NOT_STARTED, -EPICK_AN_ERRNO, "Not started"}, ++ { EFI_ALREADY_STARTED, -EPICK_AN_ERRNO, "Already started"}, ++#endif ++ { EFI_ABORTED, -EINTR, "Aborted"}, ++#if 0 ++ { EFI_ICMP_ERROR, -EPICK_AN_ERRNO, "ICMP Error"}, ++ { EFI_TFTP_ERROR, -EPICK_AN_ERRNO, "TFTP Error"}, ++ { EFI_PROTOCOL_ERROR, -EPICK_AN_ERRNO, "Protocol Error"}, ++ { EFI_INCOMPATIBLE_VERSION, -EPICK_AN_ERRNO, "Incompatible Version"}, ++#endif ++ { EFI_SECURITY_VIOLATION, -EACCES, "Security Policy Violation"}, ++#if 0 ++ { EFI_CRC_ERROR, -EPICK_AN_ERRNO, "CRC Error"}, ++ { EFI_END_OF_MEDIA, -EPICK_AN_ERRNO, "End of Media"}, ++ { EFI_END_OF_FILE, -EPICK_AN_ERRNO, "End of File"}, ++ { EFI_INVALID_LANGUAGE, -EPICK_AN_ERRNO, "Invalid Languages"}, ++ { EFI_COMPROMISED_DATA, -EPICK_AN_ERRNO, "Compromised Data"}, ++ ++ // warnings ++ { EFI_WARN_UNKOWN_GLYPH, -EPICK_AN_ERRNO, "Warning Unknown Glyph"}, ++ { EFI_WARN_DELETE_FAILURE, -EPICK_AN_ERRNO, "Warning Delete Failure"}, ++ { EFI_WARN_WRITE_FAILURE, -EPICK_AN_ERRNO, "Warning Write Failure"}, ++ { EFI_WARN_BUFFER_TOO_SMALL, -EPICK_AN_ERRNO, "Warning Buffer Too Small"}, ++#endif ++}; ++ ++static int ++efi_status_cmp_bsearch(const void *key, const void *item) ++{ ++ u64 status = (u64)(uintptr_t)key; ++ struct efi_error_code *code = (struct efi_error_code *)item; ++ ++ if (status < code->status) ++ return -1; ++ if (status > code->status) ++ return 1; ++ return 0; ++} ++ + int efi_status_to_err(efi_status_t status) + { +- int err; +- +- switch (status) { +- case EFI_SUCCESS: +- err = 0; +- break; +- case EFI_INVALID_PARAMETER: +- err = -EINVAL; +- break; +- case EFI_OUT_OF_RESOURCES: +- err = -ENOSPC; +- break; +- case EFI_DEVICE_ERROR: +- err = -EIO; +- break; +- case EFI_WRITE_PROTECTED: +- err = -EROFS; +- break; +- case EFI_SECURITY_VIOLATION: +- err = -EACCES; +- break; +- case EFI_NOT_FOUND: +- err = -ENOENT; +- break; +- case EFI_ABORTED: +- err = -EINTR; +- break; +- default: +- err = -EINVAL; +- } ++ struct efi_error_code *found; ++ size_t num = sizeof(efi_error_codes) / sizeof(struct efi_error_code); + +- return err; ++ found = bsearch((void *)(uintptr_t)status, efi_error_codes, ++ sizeof(struct efi_error_code), num, ++ efi_status_cmp_bsearch); ++ if (!found) ++ return -EINVAL; ++ return found->errno; ++} ++ ++const char * ++efi_status_to_str(efi_status_t status) ++{ ++ struct efi_error_code *found; ++ size_t num = sizeof(efi_error_codes) / sizeof(struct efi_error_code); ++ ++ found = bsearch((void *)(uintptr_t)status, efi_error_codes, ++ sizeof(struct efi_error_code), num, ++ efi_status_cmp_bsearch); ++ if (!found) ++ return "Unknown error code"; ++ return found->description; + } + + static DEFINE_SPINLOCK(efi_mem_reserve_persistent_lock); +diff --git a/drivers/firmware/efi/secureboot.c b/drivers/firmware/efi/secureboot.c +new file mode 100644 +index 000000000000..de0a3714a5d4 +--- /dev/null ++++ b/drivers/firmware/efi/secureboot.c +@@ -0,0 +1,38 @@ ++/* Core kernel secure boot support. ++ * ++ * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. ++ * Written by David Howells (dhowells@redhat.com) ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public Licence ++ * as published by the Free Software Foundation; either version ++ * 2 of the Licence, or (at your option) any later version. ++ */ ++ ++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt ++ ++#include <linux/efi.h> ++#include <linux/kernel.h> ++#include <linux/printk.h> ++ ++/* ++ * Decide what to do when UEFI secure boot mode is enabled. ++ */ ++void __init efi_set_secure_boot(enum efi_secureboot_mode mode) ++{ ++ if (efi_enabled(EFI_BOOT)) { ++ switch (mode) { ++ case efi_secureboot_mode_disabled: ++ pr_info("Secure boot disabled\n"); ++ break; ++ case efi_secureboot_mode_enabled: ++ set_bit(EFI_SECURE_BOOT, &efi.flags); ++ pr_info("Secure boot enabled\n"); ++ break; ++ default: ++ pr_warn("Secure boot could not be determined (mode %u)\n", ++ mode); ++ break; ++ } ++ } ++} +diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c +index 311eee599ce9..2460c6bd46f8 100644 +--- a/drivers/hid/hid-rmi.c ++++ b/drivers/hid/hid-rmi.c +@@ -322,19 +322,12 @@ static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) + { + struct rmi_data *hdata = hid_get_drvdata(hdev); + struct rmi_device *rmi_dev = hdata->xport.rmi_dev; +- unsigned long flags; + + if (!(test_bit(RMI_STARTED, &hdata->flags))) + return 0; + +- local_irq_save(flags); +- + rmi_set_attn_data(rmi_dev, data[1], &data[2], size - 2); + +- generic_handle_irq(hdata->rmi_irq); +- +- local_irq_restore(flags); +- + return 1; + } + +@@ -591,56 +584,6 @@ static const struct rmi_transport_ops hid_rmi_ops = { + .reset = rmi_hid_reset, + }; + +-static void rmi_irq_teardown(void *data) +-{ +- struct rmi_data *hdata = data; +- struct irq_domain *domain = hdata->domain; +- +- if (!domain) +- return; +- +- irq_dispose_mapping(irq_find_mapping(domain, 0)); +- +- irq_domain_remove(domain); +- hdata->domain = NULL; +- hdata->rmi_irq = 0; +-} +- +-static int rmi_irq_map(struct irq_domain *h, unsigned int virq, +- irq_hw_number_t hw_irq_num) +-{ +- irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq); +- +- return 0; +-} +- +-static const struct irq_domain_ops rmi_irq_ops = { +- .map = rmi_irq_map, +-}; +- +-static int rmi_setup_irq_domain(struct hid_device *hdev) +-{ +- struct rmi_data *hdata = hid_get_drvdata(hdev); +- int ret; +- +- hdata->domain = irq_domain_create_linear(hdev->dev.fwnode, 1, +- &rmi_irq_ops, hdata); +- if (!hdata->domain) +- return -ENOMEM; +- +- ret = devm_add_action_or_reset(&hdev->dev, &rmi_irq_teardown, hdata); +- if (ret) +- return ret; +- +- hdata->rmi_irq = irq_create_mapping(hdata->domain, 0); +- if (hdata->rmi_irq <= 0) { +- hid_err(hdev, "Can't allocate an IRQ\n"); +- return hdata->rmi_irq < 0 ? hdata->rmi_irq : -ENXIO; +- } +- +- return 0; +-} +- + static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) + { + struct rmi_data *data = NULL; +@@ -713,18 +656,11 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) + + mutex_init(&data->page_mutex); + +- ret = rmi_setup_irq_domain(hdev); +- if (ret) { +- hid_err(hdev, "failed to allocate IRQ domain\n"); +- return ret; +- } +- + if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) + rmi_hid_pdata.gpio_data.disable = true; + + data->xport.dev = hdev->dev.parent; + data->xport.pdata = rmi_hid_pdata; +- data->xport.pdata.irq = data->rmi_irq; + data->xport.proto_name = "hid"; + data->xport.ops = &hid_rmi_ops; + +diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c +index da27cd4a3c38..5404b4c407c5 100644 +--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c ++++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c +@@ -9,6 +9,7 @@ + #include <linux/init.h> + #include <linux/types.h> + #include <linux/device.h> ++#include <linux/dmi.h> + #include <linux/io.h> + #include <linux/err.h> + #include <linux/fs.h> +@@ -2071,6 +2072,16 @@ static const struct amba_id etm4_ids[] = { + {}, + }; + ++static const struct dmi_system_id broken_coresight[] = { ++ { ++ .matches = { ++ DMI_MATCH(DMI_SYS_VENDOR, "HPE"), ++ DMI_MATCH(DMI_PRODUCT_NAME, "Apollo 70"), ++ }, ++ }, ++ { } /* terminating entry */ ++}; ++ + MODULE_DEVICE_TABLE(amba, etm4_ids); + + static struct amba_driver etm4x_amba_driver = { +@@ -2104,6 +2115,11 @@ static int __init etm4x_init(void) + { + int ret; + ++ if (dmi_check_system(broken_coresight)) { ++ pr_info("ETM4 disabled due to firmware bug\n"); ++ return 0; ++ } ++ + ret = etm4_pm_setup(); + + /* etm4_pm_setup() does its own cleanup - exit on error */ +@@ -2130,6 +2146,9 @@ static int __init etm4x_init(void) + + static void __exit etm4x_exit(void) + { ++ if (dmi_check_system(broken_coresight)) ++ return; ++ + amba_driver_unregister(&etm4x_amba_driver); + platform_driver_unregister(&etm4_platform_driver); + etm4_pm_clear(); +diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c +index 258d5fe3d395..f7298e3dc8f3 100644 +--- a/drivers/input/rmi4/rmi_driver.c ++++ b/drivers/input/rmi4/rmi_driver.c +@@ -182,34 +182,47 @@ void rmi_set_attn_data(struct rmi_device *rmi_dev, unsigned long irq_status, + attn_data.data = fifo_data; + + kfifo_put(&drvdata->attn_fifo, attn_data); ++ ++ schedule_work(&drvdata->attn_work); + } + EXPORT_SYMBOL_GPL(rmi_set_attn_data); + +-static irqreturn_t rmi_irq_fn(int irq, void *dev_id) ++static void attn_callback(struct work_struct *work) + { +- struct rmi_device *rmi_dev = dev_id; +- struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); ++ struct rmi_driver_data *drvdata = container_of(work, ++ struct rmi_driver_data, ++ attn_work); + struct rmi4_attn_data attn_data = {0}; + int ret, count; + + count = kfifo_get(&drvdata->attn_fifo, &attn_data); +- if (count) { +- *(drvdata->irq_status) = attn_data.irq_status; +- drvdata->attn_data = attn_data; +- } ++ if (!count) ++ return; + +- ret = rmi_process_interrupt_requests(rmi_dev); ++ *(drvdata->irq_status) = attn_data.irq_status; ++ drvdata->attn_data = attn_data; ++ ++ ret = rmi_process_interrupt_requests(drvdata->rmi_dev); + if (ret) +- rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, ++ rmi_dbg(RMI_DEBUG_CORE, &drvdata->rmi_dev->dev, + "Failed to process interrupt request: %d\n", ret); + +- if (count) { +- kfree(attn_data.data); +- drvdata->attn_data.data = NULL; +- } ++ kfree(attn_data.data); ++ drvdata->attn_data.data = NULL; + + if (!kfifo_is_empty(&drvdata->attn_fifo)) +- return rmi_irq_fn(irq, dev_id); ++ schedule_work(&drvdata->attn_work); ++} ++ ++static irqreturn_t rmi_irq_fn(int irq, void *dev_id) ++{ ++ struct rmi_device *rmi_dev = dev_id; ++ int ret; ++ ++ ret = rmi_process_interrupt_requests(rmi_dev); ++ if (ret) ++ rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, ++ "Failed to process interrupt request: %d\n", ret); + + return IRQ_HANDLED; + } +@@ -217,7 +230,6 @@ static irqreturn_t rmi_irq_fn(int irq, void *dev_id) + static int rmi_irq_init(struct rmi_device *rmi_dev) + { + struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev); +- struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev); + int irq_flags = irq_get_trigger_type(pdata->irq); + int ret; + +@@ -235,8 +247,6 @@ static int rmi_irq_init(struct rmi_device *rmi_dev) + return ret; + } + +- data->enabled = true; +- + return 0; + } + +@@ -886,23 +896,27 @@ void rmi_enable_irq(struct rmi_device *rmi_dev, bool clear_wake) + if (data->enabled) + goto out; + +- enable_irq(irq); +- data->enabled = true; +- if (clear_wake && device_may_wakeup(rmi_dev->xport->dev)) { +- retval = disable_irq_wake(irq); +- if (retval) +- dev_warn(&rmi_dev->dev, +- "Failed to disable irq for wake: %d\n", +- retval); +- } ++ if (irq) { ++ enable_irq(irq); ++ data->enabled = true; ++ if (clear_wake && device_may_wakeup(rmi_dev->xport->dev)) { ++ retval = disable_irq_wake(irq); ++ if (retval) ++ dev_warn(&rmi_dev->dev, ++ "Failed to disable irq for wake: %d\n", ++ retval); ++ } + +- /* +- * Call rmi_process_interrupt_requests() after enabling irq, +- * otherwise we may lose interrupt on edge-triggered systems. +- */ +- irq_flags = irq_get_trigger_type(pdata->irq); +- if (irq_flags & IRQ_TYPE_EDGE_BOTH) +- rmi_process_interrupt_requests(rmi_dev); ++ /* ++ * Call rmi_process_interrupt_requests() after enabling irq, ++ * otherwise we may lose interrupt on edge-triggered systems. ++ */ ++ irq_flags = irq_get_trigger_type(pdata->irq); ++ if (irq_flags & IRQ_TYPE_EDGE_BOTH) ++ rmi_process_interrupt_requests(rmi_dev); ++ } else { ++ data->enabled = true; ++ } + + out: + mutex_unlock(&data->enabled_mutex); +@@ -922,20 +936,22 @@ void rmi_disable_irq(struct rmi_device *rmi_dev, bool enable_wake) + goto out; + + data->enabled = false; +- disable_irq(irq); +- if (enable_wake && device_may_wakeup(rmi_dev->xport->dev)) { +- retval = enable_irq_wake(irq); +- if (retval) +- dev_warn(&rmi_dev->dev, +- "Failed to enable irq for wake: %d\n", +- retval); +- } +- +- /* make sure the fifo is clean */ +- while (!kfifo_is_empty(&data->attn_fifo)) { +- count = kfifo_get(&data->attn_fifo, &attn_data); +- if (count) +- kfree(attn_data.data); ++ if (irq) { ++ disable_irq(irq); ++ if (enable_wake && device_may_wakeup(rmi_dev->xport->dev)) { ++ retval = enable_irq_wake(irq); ++ if (retval) ++ dev_warn(&rmi_dev->dev, ++ "Failed to enable irq for wake: %d\n", ++ retval); ++ } ++ } else { ++ /* make sure the fifo is clean */ ++ while (!kfifo_is_empty(&data->attn_fifo)) { ++ count = kfifo_get(&data->attn_fifo, &attn_data); ++ if (count) ++ kfree(attn_data.data); ++ } + } + + out: +@@ -981,6 +997,8 @@ static int rmi_driver_remove(struct device *dev) + irq_domain_remove(data->irqdomain); + data->irqdomain = NULL; + ++ cancel_work_sync(&data->attn_work); ++ + rmi_f34_remove_sysfs(rmi_dev); + rmi_free_function_list(rmi_dev); + +@@ -1219,9 +1237,15 @@ static int rmi_driver_probe(struct device *dev) + } + } + +- retval = rmi_irq_init(rmi_dev); +- if (retval < 0) +- goto err_destroy_functions; ++ if (pdata->irq) { ++ retval = rmi_irq_init(rmi_dev); ++ if (retval < 0) ++ goto err_destroy_functions; ++ } ++ ++ data->enabled = true; ++ ++ INIT_WORK(&data->attn_work, attn_callback); + + if (data->f01_container->dev.driver) { + /* Driver already bound, so enable ATTN now. */ +diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c +index 63f0af10c403..195be16dbd39 100644 +--- a/drivers/iommu/iommu.c ++++ b/drivers/iommu/iommu.c +@@ -7,6 +7,7 @@ + #define pr_fmt(fmt) "iommu: " fmt + + #include <linux/device.h> ++#include <linux/dmi.h> + #include <linux/kernel.h> + #include <linux/bug.h> + #include <linux/types.h> +@@ -3039,6 +3040,27 @@ u32 iommu_sva_get_pasid(struct iommu_sva *handle) + } + EXPORT_SYMBOL_GPL(iommu_sva_get_pasid); + ++#ifdef CONFIG_ARM64 ++static int __init iommu_quirks(void) ++{ ++ const char *vendor, *name; ++ ++ vendor = dmi_get_system_info(DMI_SYS_VENDOR); ++ name = dmi_get_system_info(DMI_PRODUCT_NAME); ++ ++ if (vendor && ++ (strncmp(vendor, "GIGABYTE", 8) == 0 && name && ++ (strncmp(name, "R120", 4) == 0 || ++ strncmp(name, "R270", 4) == 0))) { ++ pr_warn("Gigabyte %s detected, force iommu passthrough mode", name); ++ iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY; ++ } ++ ++ return 0; ++} ++arch_initcall(iommu_quirks); ++#endif ++ + /* + * Changes the default domain of an iommu group that has *only* one device + * +diff --git a/drivers/net/wireguard/main.c b/drivers/net/wireguard/main.c +index 75dbe77b0b4b..4bd6dd722f44 100644 +--- a/drivers/net/wireguard/main.c ++++ b/drivers/net/wireguard/main.c +@@ -12,6 +12,7 @@ + + #include <uapi/linux/wireguard.h> + ++#include <linux/fips.h> + #include <linux/init.h> + #include <linux/module.h> + #include <linux/genetlink.h> +@@ -21,6 +22,11 @@ static int __init mod_init(void) + { + int ret; + ++#ifdef CONFIG_RHEL_DIFFERENCES ++ if (fips_enabled) ++ return -EOPNOTSUPP; ++#endif ++ + ret = wg_allowedips_slab_init(); + if (ret < 0) + goto err_allowedips; +diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c +index 8c3c1ef92171..18431236ab9f 100644 +--- a/drivers/pci/quirks.c ++++ b/drivers/pci/quirks.c +@@ -4232,6 +4232,30 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000, + DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084, + quirk_bridge_cavm_thrx2_pcie_root); + ++/* ++ * PCI BAR 5 is not setup correctly for the on-board AHCI controller ++ * on Broadcom's Vulcan processor. Added a quirk to fix BAR 5 by ++ * using BAR 4's resources which are populated correctly and NOT ++ * actually used by the AHCI controller. ++ */ ++static void quirk_fix_vulcan_ahci_bars(struct pci_dev *dev) ++{ ++ struct resource *r = &dev->resource[4]; ++ ++ if (!(r->flags & IORESOURCE_MEM) || (r->start == 0)) ++ return; ++ ++ /* Set BAR5 resource to BAR4 */ ++ dev->resource[5] = *r; ++ ++ /* Update BAR5 in pci config space */ ++ pci_write_config_dword(dev, PCI_BASE_ADDRESS_5, r->start); ++ ++ /* Clear BAR4's resource */ ++ memset(r, 0, sizeof(*r)); ++} ++DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9027, quirk_fix_vulcan_ahci_bars); ++ + /* + * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) + * class code. Fix it. +diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c +index 86658a81d284..5647f4756e97 100644 +--- a/drivers/usb/core/hub.c ++++ b/drivers/usb/core/hub.c +@@ -5657,6 +5657,13 @@ static void hub_event(struct work_struct *work) + (u16) hub->change_bits[0], + (u16) hub->event_bits[0]); + ++ /* Don't disconnect USB-SATA on TrimSlice */ ++ if (strcmp(dev_name(hdev->bus->controller), "tegra-ehci.0") == 0) { ++ if ((hdev->state == 7) && (hub->change_bits[0] == 0) && ++ (hub->event_bits[0] == 0x2)) ++ hub->event_bits[0] = 0; ++ } ++ + /* Lock the device, then check to see if we were + * disconnected while waiting for the lock to succeed. */ + usb_lock_device(hdev); +diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c +index 2c9e26a44546..f96324912d6a 100644 +--- a/fs/xfs/xfs_super.c ++++ b/fs/xfs/xfs_super.c +@@ -1539,10 +1539,6 @@ xfs_fs_fill_super( + if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) + sb->s_flags |= SB_I_VERSION; + +- if (xfs_sb_version_hasbigtime(&mp->m_sb)) +- xfs_warn(mp, +- "EXPERIMENTAL big timestamp feature in use. Use at your own risk!"); +- + if (mp->m_flags & XFS_MOUNT_DAX_ALWAYS) { + bool rtdev_is_dax = false, datadev_is_dax; + +@@ -1598,10 +1594,6 @@ xfs_fs_fill_super( + goto out_filestream_unmount; + } + +- if (xfs_sb_version_hasinobtcounts(&mp->m_sb)) +- xfs_warn(mp, +- "EXPERIMENTAL inode btree counters feature in use. Use at your own risk!"); +- + error = xfs_mountfs(mp); + if (error) + goto out_filestream_unmount; +diff --git a/include/linux/efi.h b/include/linux/efi.h +index 6b5d36babfcc..fd4a5d66a9d0 100644 +--- a/include/linux/efi.h ++++ b/include/linux/efi.h +@@ -43,6 +43,8 @@ + #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) + #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) + ++#define EFI_IS_ERROR(x) ((x) & (1UL << (BITS_PER_LONG-1))) ++ + typedef unsigned long efi_status_t; + typedef u8 efi_bool_t; + typedef u16 efi_char16_t; /* UNICODE character */ +@@ -782,6 +784,14 @@ extern int __init efi_setup_pcdp_console(char *); + #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ + #define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */ + #define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */ ++#define EFI_SECURE_BOOT 13 /* Are we in Secure Boot mode? */ ++ ++enum efi_secureboot_mode { ++ efi_secureboot_mode_unset, ++ efi_secureboot_mode_unknown, ++ efi_secureboot_mode_disabled, ++ efi_secureboot_mode_enabled, ++}; + + #ifdef CONFIG_EFI + /* +@@ -793,6 +803,8 @@ static inline bool efi_enabled(int feature) + } + extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); + ++extern void __init efi_set_secure_boot(enum efi_secureboot_mode mode); ++ + bool __pure __efi_soft_reserve_enabled(void); + + static inline bool __pure efi_soft_reserve_enabled(void) +@@ -813,6 +825,8 @@ static inline bool efi_enabled(int feature) + static inline void + efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} + ++static inline void efi_set_secure_boot(enum efi_secureboot_mode mode) {} ++ + static inline bool efi_soft_reserve_enabled(void) + { + return false; +@@ -825,6 +839,7 @@ static inline bool efi_rt_services_supported(unsigned int mask) + #endif + + extern int efi_status_to_err(efi_status_t status); ++extern const char *efi_status_to_str(efi_status_t status); + + /* + * Variable Attributes +@@ -1077,13 +1092,6 @@ static inline bool efi_runtime_disabled(void) { return true; } + extern void efi_call_virt_check_flags(unsigned long flags, const char *call); + extern unsigned long efi_call_virt_save_flags(void); + +-enum efi_secureboot_mode { +- efi_secureboot_mode_unset, +- efi_secureboot_mode_unknown, +- efi_secureboot_mode_disabled, +- efi_secureboot_mode_enabled, +-}; +- + static inline + enum efi_secureboot_mode efi_get_secureboot_mode(efi_get_variable_t *get_var) + { +diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h +index 2adeea44c0d5..517013ece679 100644 +--- a/include/linux/lsm_hook_defs.h ++++ b/include/linux/lsm_hook_defs.h +@@ -394,6 +394,8 @@ LSM_HOOK(void, LSM_RET_VOID, bpf_prog_free_security, struct bpf_prog_aux *aux) + #endif /* CONFIG_BPF_SYSCALL */ + + LSM_HOOK(int, 0, locked_down, enum lockdown_reason what) ++LSM_HOOK(int, 0, lock_kernel_down, const char *where, enum lockdown_reason level) ++ + + #ifdef CONFIG_PERF_EVENTS + LSM_HOOK(int, 0, perf_event_open, struct perf_event_attr *attr, int type) +diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h +index 5c4c5c0602cb..753b53038690 100644 +--- a/include/linux/lsm_hooks.h ++++ b/include/linux/lsm_hooks.h +@@ -1545,6 +1545,12 @@ + * + * @what: kernel feature being accessed + * ++ * @lock_kernel_down ++ * Put the kernel into lock-down mode. ++ * ++ * @where: Where the lock-down is originating from (e.g. command line option) ++ * @level: The lock-down level (can only increase) ++ * + * Security hooks for perf events + * + * @perf_event_open: +diff --git a/include/linux/random.h b/include/linux/random.h +index f45b8be3e3c4..7ccdec68b789 100644 +--- a/include/linux/random.h ++++ b/include/linux/random.h +@@ -14,6 +14,11 @@ + + #include <uapi/linux/random.h> + ++struct random_extrng { ++ ssize_t (*extrng_read)(void __user *buf, size_t buflen); ++ struct module *owner; ++}; ++ + struct random_ready_callback { + struct list_head list; + void (*func)(struct random_ready_callback *rdy); +@@ -44,6 +49,8 @@ extern bool rng_is_initialized(void); + extern int add_random_ready_callback(struct random_ready_callback *rdy); + extern void del_random_ready_callback(struct random_ready_callback *rdy); + extern int __must_check get_random_bytes_arch(void *buf, int nbytes); ++void random_register_extrng(const struct random_extrng *rng); ++void random_unregister_extrng(void); + + #ifndef MODULE + extern const struct file_operations random_fops, urandom_fops; +diff --git a/include/linux/rmi.h b/include/linux/rmi.h +index ab7eea01ab42..fff7c5f737fc 100644 +--- a/include/linux/rmi.h ++++ b/include/linux/rmi.h +@@ -364,6 +364,7 @@ struct rmi_driver_data { + + struct rmi4_attn_data attn_data; + DECLARE_KFIFO(attn_fifo, struct rmi4_attn_data, 16); ++ struct work_struct attn_work; + }; + + int rmi_register_transport_device(struct rmi_transport_dev *xport); +diff --git a/include/linux/security.h b/include/linux/security.h +index 5b7288521300..f966f591c91e 100644 +--- a/include/linux/security.h ++++ b/include/linux/security.h +@@ -472,6 +472,7 @@ int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); + int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); + int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); + int security_locked_down(enum lockdown_reason what); ++int security_lock_kernel_down(const char *where, enum lockdown_reason level); + #else /* CONFIG_SECURITY */ + + static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) +@@ -1348,6 +1349,10 @@ static inline int security_locked_down(enum lockdown_reason what) + { + return 0; + } ++static inline int security_lock_kernel_down(const char *where, enum lockdown_reason level) ++{ ++ return 0; ++} + #endif /* CONFIG_SECURITY */ + + #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) +diff --git a/init/Kconfig b/init/Kconfig +index 55f9f7738ebb..564553afb251 100644 +--- a/init/Kconfig ++++ b/init/Kconfig +@@ -1625,7 +1625,7 @@ config AIO + this option saves about 7k. + + config IO_URING +- bool "Enable IO uring support" if EXPERT ++ bool "Enable IO uring support" + select IO_WQ + default y + help +diff --git a/kernel/module_signing.c b/kernel/module_signing.c +index 8723ae70ea1f..fb2d773498c2 100644 +--- a/kernel/module_signing.c ++++ b/kernel/module_signing.c +@@ -38,8 +38,15 @@ int mod_verify_sig(const void *mod, struct load_info *info) + modlen -= sig_len + sizeof(ms); + info->len = modlen; + +- return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len, ++ ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len, + VERIFY_USE_SECONDARY_KEYRING, + VERIFYING_MODULE_SIGNATURE, + NULL, NULL); ++ if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) { ++ ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len, ++ VERIFY_USE_PLATFORM_KEYRING, ++ VERIFYING_MODULE_SIGNATURE, ++ NULL, NULL); ++ } ++ return ret; + } +diff --git a/mm/cma.c b/mm/cma.c +index 995e15480937..588f7e7885cf 100644 +--- a/mm/cma.c ++++ b/mm/cma.c +@@ -125,6 +125,12 @@ static void __init cma_activate_area(struct cma *cma) + spin_lock_init(&cma->mem_head_lock); + #endif + ++#ifdef CONFIG_RHEL_DIFFERENCES ++ /* s390x and ppc64 has been using CMA already in RHEL 8 as default. */ ++ if (!IS_ENABLED(CONFIG_S390) && !IS_ENABLED(CONFIG_PPC64)) ++ mark_tech_preview("CMA", NULL); ++#endif /* CONFIG_RHEL_DIFFERENCES */ ++ + return; + + not_in_zone: +@@ -437,6 +443,10 @@ struct page *cma_alloc(struct cma *cma, unsigned long count, + if (!cma || !cma->count || !cma->bitmap) + goto out; + ++#ifdef CONFIG_RHEL_DIFFERENCES ++ pr_info_once("Initial CMA usage detected\n"); ++#endif /* CONFIG_RHEL_DIFFERENCES */ ++ + pr_debug("%s(cma %p, count %lu, align %d)\n", __func__, (void *)cma, + count, align); + +diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c +index f290f78c3f30..d3e7ae04f5be 100644 +--- a/security/integrity/platform_certs/load_uefi.c ++++ b/security/integrity/platform_certs/load_uefi.c +@@ -46,7 +46,8 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, + return NULL; + + if (*status != EFI_BUFFER_TOO_SMALL) { +- pr_err("Couldn't get size: 0x%lx\n", *status); ++ pr_err("Couldn't get size: %s (0x%lx)\n", ++ efi_status_to_str(*status), *status); + return NULL; + } + +@@ -57,7 +58,8 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, + *status = efi.get_variable(name, guid, NULL, &lsize, db); + if (*status != EFI_SUCCESS) { + kfree(db); +- pr_err("Error reading db var: 0x%lx\n", *status); ++ pr_err("Error reading db var: %s (0x%lx)\n", ++ efi_status_to_str(*status), *status); + return NULL; + } + +diff --git a/security/lockdown/Kconfig b/security/lockdown/Kconfig +index e84ddf484010..d0501353a4b9 100644 +--- a/security/lockdown/Kconfig ++++ b/security/lockdown/Kconfig +@@ -16,6 +16,19 @@ config SECURITY_LOCKDOWN_LSM_EARLY + subsystem is fully initialised. If enabled, lockdown will + unconditionally be called before any other LSMs. + ++config LOCK_DOWN_IN_EFI_SECURE_BOOT ++ bool "Lock down the kernel in EFI Secure Boot mode" ++ default n ++ depends on EFI && SECURITY_LOCKDOWN_LSM_EARLY ++ help ++ UEFI Secure Boot provides a mechanism for ensuring that the firmware ++ will only load signed bootloaders and kernels. Secure boot mode may ++ be determined from EFI variables provided by the system firmware if ++ not indicated by the boot parameters. ++ ++ Enabling this option results in kernel lockdown being triggered if ++ EFI Secure Boot is set. ++ + choice + prompt "Kernel default lockdown mode" + default LOCK_DOWN_KERNEL_FORCE_NONE +diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c +index 87cbdc64d272..18555cf18da7 100644 +--- a/security/lockdown/lockdown.c ++++ b/security/lockdown/lockdown.c +@@ -73,6 +73,7 @@ static int lockdown_is_locked_down(enum lockdown_reason what) + + static struct security_hook_list lockdown_hooks[] __lsm_ro_after_init = { + LSM_HOOK_INIT(locked_down, lockdown_is_locked_down), ++ LSM_HOOK_INIT(lock_kernel_down, lock_kernel_down), + }; + + static int __init lockdown_lsm_init(void) +diff --git a/security/security.c b/security/security.c +index 9ffa9e9c5c55..36484cc9842d 100644 +--- a/security/security.c ++++ b/security/security.c +@@ -2599,6 +2599,12 @@ int security_locked_down(enum lockdown_reason what) + } + EXPORT_SYMBOL(security_locked_down); + ++int security_lock_kernel_down(const char *where, enum lockdown_reason level) ++{ ++ return call_int_hook(lock_kernel_down, 0, where, level); ++} ++EXPORT_SYMBOL(security_lock_kernel_down); ++ + #ifdef CONFIG_PERF_EVENTS + int security_perf_event_open(struct perf_event_attr *attr, int type) + { +diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile +index f405b20c1e6c..a8e298a22709 100644 +--- a/tools/testing/selftests/bpf/Makefile ++++ b/tools/testing/selftests/bpf/Makefile +@@ -424,7 +424,6 @@ $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ + $(TRUNNER_BPF_OBJS) \ + $(TRUNNER_BPF_SKELS) \ + $(TRUNNER_BPF_LSKELS) \ +- $(TRUNNER_BPF_SKELS_LINKED) \ + $$(BPFOBJ) | $(TRUNNER_OUTPUT) + $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) + $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) +diff --git a/tools/testing/selftests/bpf/prog_tests/linked_funcs.c b/tools/testing/selftests/bpf/prog_tests/linked_funcs.c +deleted file mode 100644 +index e9916f2817ec..000000000000 +--- a/tools/testing/selftests/bpf/prog_tests/linked_funcs.c ++++ /dev/null +@@ -1,42 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include <test_progs.h> +-#include <sys/syscall.h> +-#include "linked_funcs.skel.h" +- +-void test_linked_funcs(void) +-{ +- int err; +- struct linked_funcs *skel; +- +- skel = linked_funcs__open(); +- if (!ASSERT_OK_PTR(skel, "skel_open")) +- return; +- +- skel->rodata->my_tid = syscall(SYS_gettid); +- skel->bss->syscall_id = SYS_getpgid; +- +- err = linked_funcs__load(skel); +- if (!ASSERT_OK(err, "skel_load")) +- goto cleanup; +- +- err = linked_funcs__attach(skel); +- if (!ASSERT_OK(err, "skel_attach")) +- goto cleanup; +- +- /* trigger */ +- syscall(SYS_getpgid); +- +- ASSERT_EQ(skel->bss->output_val1, 2000 + 2000, "output_val1"); +- ASSERT_EQ(skel->bss->output_ctx1, SYS_getpgid, "output_ctx1"); +- ASSERT_EQ(skel->bss->output_weak1, 42, "output_weak1"); +- +- ASSERT_EQ(skel->bss->output_val2, 2 * 1000 + 2 * (2 * 1000), "output_val2"); +- ASSERT_EQ(skel->bss->output_ctx2, SYS_getpgid, "output_ctx2"); +- /* output_weak2 should never be updated */ +- ASSERT_EQ(skel->bss->output_weak2, 0, "output_weak2"); +- +-cleanup: +- linked_funcs__destroy(skel); +-} +diff --git a/tools/testing/selftests/bpf/prog_tests/linked_maps.c b/tools/testing/selftests/bpf/prog_tests/linked_maps.c +deleted file mode 100644 +index 85dcaaaf2775..000000000000 +--- a/tools/testing/selftests/bpf/prog_tests/linked_maps.c ++++ /dev/null +@@ -1,30 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include <test_progs.h> +-#include <sys/syscall.h> +-#include "linked_maps.skel.h" +- +-void test_linked_maps(void) +-{ +- int err; +- struct linked_maps *skel; +- +- skel = linked_maps__open_and_load(); +- if (!ASSERT_OK_PTR(skel, "skel_open")) +- return; +- +- err = linked_maps__attach(skel); +- if (!ASSERT_OK(err, "skel_attach")) +- goto cleanup; +- +- /* trigger */ +- syscall(SYS_getpgid); +- +- ASSERT_EQ(skel->bss->output_first1, 2000, "output_first1"); +- ASSERT_EQ(skel->bss->output_second1, 2, "output_second1"); +- ASSERT_EQ(skel->bss->output_weak1, 2, "output_weak1"); +- +-cleanup: +- linked_maps__destroy(skel); +-} +diff --git a/tools/testing/selftests/bpf/prog_tests/linked_vars.c b/tools/testing/selftests/bpf/prog_tests/linked_vars.c +deleted file mode 100644 +index 267166abe4c1..000000000000 +--- a/tools/testing/selftests/bpf/prog_tests/linked_vars.c ++++ /dev/null +@@ -1,43 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include <test_progs.h> +-#include <sys/syscall.h> +-#include "linked_vars.skel.h" +- +-void test_linked_vars(void) +-{ +- int err; +- struct linked_vars *skel; +- +- skel = linked_vars__open(); +- if (!ASSERT_OK_PTR(skel, "skel_open")) +- return; +- +- skel->bss->input_bss1 = 1000; +- skel->bss->input_bss2 = 2000; +- skel->bss->input_bss_weak = 3000; +- +- err = linked_vars__load(skel); +- if (!ASSERT_OK(err, "skel_load")) +- goto cleanup; +- +- err = linked_vars__attach(skel); +- if (!ASSERT_OK(err, "skel_attach")) +- goto cleanup; +- +- /* trigger */ +- syscall(SYS_getpgid); +- +- ASSERT_EQ(skel->bss->output_bss1, 1000 + 2000 + 3000, "output_bss1"); +- ASSERT_EQ(skel->bss->output_bss2, 1000 + 2000 + 3000, "output_bss2"); +- /* 10 comes from "winner" input_data_weak in first obj file */ +- ASSERT_EQ(skel->bss->output_data1, 1 + 2 + 10, "output_bss1"); +- ASSERT_EQ(skel->bss->output_data2, 1 + 2 + 10, "output_bss2"); +- /* 100 comes from "winner" input_rodata_weak in first obj file */ +- ASSERT_EQ(skel->bss->output_rodata1, 11 + 22 + 100, "output_weak1"); +- ASSERT_EQ(skel->bss->output_rodata2, 11 + 22 + 100, "output_weak2"); +- +-cleanup: +- linked_vars__destroy(skel); +-} +diff --git a/tools/testing/selftests/bpf/progs/bpf_cubic.c b/tools/testing/selftests/bpf/progs/bpf_cubic.c +deleted file mode 100644 +index f62df4d023f9..000000000000 +--- a/tools/testing/selftests/bpf/progs/bpf_cubic.c ++++ /dev/null +@@ -1,545 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0-only +- +-/* WARNING: This implemenation is not necessarily the same +- * as the tcp_cubic.c. The purpose is mainly for testing +- * the kernel BPF logic. +- * +- * Highlights: +- * 1. CONFIG_HZ .kconfig map is used. +- * 2. In bictcp_update(), calculation is changed to use usec +- * resolution (i.e. USEC_PER_JIFFY) instead of using jiffies. +- * Thus, usecs_to_jiffies() is not used in the bpf_cubic.c. +- * 3. In bitctcp_update() [under tcp_friendliness], the original +- * "while (ca->ack_cnt > delta)" loop is changed to the equivalent +- * "ca->ack_cnt / delta" operation. +- */ +- +-#include <linux/bpf.h> +-#include <linux/stddef.h> +-#include <linux/tcp.h> +-#include "bpf_tcp_helpers.h" +- +-char _license[] SEC("license") = "GPL"; +- +-#define clamp(val, lo, hi) min((typeof(val))max(val, lo), hi) +- +-#define BICTCP_BETA_SCALE 1024 /* Scale factor beta calculation +- * max_cwnd = snd_cwnd * beta +- */ +-#define BICTCP_HZ 10 /* BIC HZ 2^10 = 1024 */ +- +-/* Two methods of hybrid slow start */ +-#define HYSTART_ACK_TRAIN 0x1 +-#define HYSTART_DELAY 0x2 +- +-/* Number of delay samples for detecting the increase of delay */ +-#define HYSTART_MIN_SAMPLES 8 +-#define HYSTART_DELAY_MIN (4000U) /* 4ms */ +-#define HYSTART_DELAY_MAX (16000U) /* 16 ms */ +-#define HYSTART_DELAY_THRESH(x) clamp(x, HYSTART_DELAY_MIN, HYSTART_DELAY_MAX) +- +-static int fast_convergence = 1; +-static const int beta = 717; /* = 717/1024 (BICTCP_BETA_SCALE) */ +-static int initial_ssthresh; +-static const int bic_scale = 41; +-static int tcp_friendliness = 1; +- +-static int hystart = 1; +-static int hystart_detect = HYSTART_ACK_TRAIN | HYSTART_DELAY; +-static int hystart_low_window = 16; +-static int hystart_ack_delta_us = 2000; +- +-static const __u32 cube_rtt_scale = (bic_scale * 10); /* 1024*c/rtt */ +-static const __u32 beta_scale = 8*(BICTCP_BETA_SCALE+beta) / 3 +- / (BICTCP_BETA_SCALE - beta); +-/* calculate the "K" for (wmax-cwnd) = c/rtt * K^3 +- * so K = cubic_root( (wmax-cwnd)*rtt/c ) +- * the unit of K is bictcp_HZ=2^10, not HZ +- * +- * c = bic_scale >> 10 +- * rtt = 100ms +- * +- * the following code has been designed and tested for +- * cwnd < 1 million packets +- * RTT < 100 seconds +- * HZ < 1,000,00 (corresponding to 10 nano-second) +- */ +- +-/* 1/c * 2^2*bictcp_HZ * srtt, 2^40 */ +-static const __u64 cube_factor = (__u64)(1ull << (10+3*BICTCP_HZ)) +- / (bic_scale * 10); +- +-/* BIC TCP Parameters */ +-struct bictcp { +- __u32 cnt; /* increase cwnd by 1 after ACKs */ +- __u32 last_max_cwnd; /* last maximum snd_cwnd */ +- __u32 last_cwnd; /* the last snd_cwnd */ +- __u32 last_time; /* time when updated last_cwnd */ +- __u32 bic_origin_point;/* origin point of bic function */ +- __u32 bic_K; /* time to origin point +- from the beginning of the current epoch */ +- __u32 delay_min; /* min delay (usec) */ +- __u32 epoch_start; /* beginning of an epoch */ +- __u32 ack_cnt; /* number of acks */ +- __u32 tcp_cwnd; /* estimated tcp cwnd */ +- __u16 unused; +- __u8 sample_cnt; /* number of samples to decide curr_rtt */ +- __u8 found; /* the exit point is found? */ +- __u32 round_start; /* beginning of each round */ +- __u32 end_seq; /* end_seq of the round */ +- __u32 last_ack; /* last time when the ACK spacing is close */ +- __u32 curr_rtt; /* the minimum rtt of current round */ +-}; +- +-static inline void bictcp_reset(struct bictcp *ca) +-{ +- ca->cnt = 0; +- ca->last_max_cwnd = 0; +- ca->last_cwnd = 0; +- ca->last_time = 0; +- ca->bic_origin_point = 0; +- ca->bic_K = 0; +- ca->delay_min = 0; +- ca->epoch_start = 0; +- ca->ack_cnt = 0; +- ca->tcp_cwnd = 0; +- ca->found = 0; +-} +- +-extern unsigned long CONFIG_HZ __kconfig; +-#define HZ CONFIG_HZ +-#define USEC_PER_MSEC 1000UL +-#define USEC_PER_SEC 1000000UL +-#define USEC_PER_JIFFY (USEC_PER_SEC / HZ) +- +-static __always_inline __u64 div64_u64(__u64 dividend, __u64 divisor) +-{ +- return dividend / divisor; +-} +- +-#define div64_ul div64_u64 +- +-#define BITS_PER_U64 (sizeof(__u64) * 8) +-static __always_inline int fls64(__u64 x) +-{ +- int num = BITS_PER_U64 - 1; +- +- if (x == 0) +- return 0; +- +- if (!(x & (~0ull << (BITS_PER_U64-32)))) { +- num -= 32; +- x <<= 32; +- } +- if (!(x & (~0ull << (BITS_PER_U64-16)))) { +- num -= 16; +- x <<= 16; +- } +- if (!(x & (~0ull << (BITS_PER_U64-8)))) { +- num -= 8; +- x <<= 8; +- } +- if (!(x & (~0ull << (BITS_PER_U64-4)))) { +- num -= 4; +- x <<= 4; +- } +- if (!(x & (~0ull << (BITS_PER_U64-2)))) { +- num -= 2; +- x <<= 2; +- } +- if (!(x & (~0ull << (BITS_PER_U64-1)))) +- num -= 1; +- +- return num + 1; +-} +- +-static __always_inline __u32 bictcp_clock_us(const struct sock *sk) +-{ +- return tcp_sk(sk)->tcp_mstamp; +-} +- +-static __always_inline void bictcp_hystart_reset(struct sock *sk) +-{ +- struct tcp_sock *tp = tcp_sk(sk); +- struct bictcp *ca = inet_csk_ca(sk); +- +- ca->round_start = ca->last_ack = bictcp_clock_us(sk); +- ca->end_seq = tp->snd_nxt; +- ca->curr_rtt = ~0U; +- ca->sample_cnt = 0; +-} +- +-/* "struct_ops/" prefix is not a requirement +- * It will be recognized as BPF_PROG_TYPE_STRUCT_OPS +- * as long as it is used in one of the func ptr +- * under SEC(".struct_ops"). +- */ +-SEC("struct_ops/bpf_cubic_init") +-void BPF_PROG(bpf_cubic_init, struct sock *sk) +-{ +- struct bictcp *ca = inet_csk_ca(sk); +- +- bictcp_reset(ca); +- +- if (hystart) +- bictcp_hystart_reset(sk); +- +- if (!hystart && initial_ssthresh) +- tcp_sk(sk)->snd_ssthresh = initial_ssthresh; +-} +- +-/* No prefix in SEC will also work. +- * The remaining tcp-cubic functions have an easier way. +- */ +-SEC("no-sec-prefix-bictcp_cwnd_event") +-void BPF_PROG(bpf_cubic_cwnd_event, struct sock *sk, enum tcp_ca_event event) +-{ +- if (event == CA_EVENT_TX_START) { +- struct bictcp *ca = inet_csk_ca(sk); +- __u32 now = tcp_jiffies32; +- __s32 delta; +- +- delta = now - tcp_sk(sk)->lsndtime; +- +- /* We were application limited (idle) for a while. +- * Shift epoch_start to keep cwnd growth to cubic curve. +- */ +- if (ca->epoch_start && delta > 0) { +- ca->epoch_start += delta; +- if (after(ca->epoch_start, now)) +- ca->epoch_start = now; +- } +- return; +- } +-} +- +-/* +- * cbrt(x) MSB values for x MSB values in [0..63]. +- * Precomputed then refined by hand - Willy Tarreau +- * +- * For x in [0..63], +- * v = cbrt(x << 18) - 1 +- * cbrt(x) = (v[x] + 10) >> 6 +- */ +-static const __u8 v[] = { +- /* 0x00 */ 0, 54, 54, 54, 118, 118, 118, 118, +- /* 0x08 */ 123, 129, 134, 138, 143, 147, 151, 156, +- /* 0x10 */ 157, 161, 164, 168, 170, 173, 176, 179, +- /* 0x18 */ 181, 185, 187, 190, 192, 194, 197, 199, +- /* 0x20 */ 200, 202, 204, 206, 209, 211, 213, 215, +- /* 0x28 */ 217, 219, 221, 222, 224, 225, 227, 229, +- /* 0x30 */ 231, 232, 234, 236, 237, 239, 240, 242, +- /* 0x38 */ 244, 245, 246, 248, 250, 251, 252, 254, +-}; +- +-/* calculate the cubic root of x using a table lookup followed by one +- * Newton-Raphson iteration. +- * Avg err ~= 0.195% +- */ +-static __always_inline __u32 cubic_root(__u64 a) +-{ +- __u32 x, b, shift; +- +- if (a < 64) { +- /* a in [0..63] */ +- return ((__u32)v[(__u32)a] + 35) >> 6; +- } +- +- b = fls64(a); +- b = ((b * 84) >> 8) - 1; +- shift = (a >> (b * 3)); +- +- /* it is needed for verifier's bound check on v */ +- if (shift >= 64) +- return 0; +- +- x = ((__u32)(((__u32)v[shift] + 10) << b)) >> 6; +- +- /* +- * Newton-Raphson iteration +- * 2 +- * x = ( 2 * x + a / x ) / 3 +- * k+1 k k +- */ +- x = (2 * x + (__u32)div64_u64(a, (__u64)x * (__u64)(x - 1))); +- x = ((x * 341) >> 10); +- return x; +-} +- +-/* +- * Compute congestion window to use. +- */ +-static __always_inline void bictcp_update(struct bictcp *ca, __u32 cwnd, +- __u32 acked) +-{ +- __u32 delta, bic_target, max_cnt; +- __u64 offs, t; +- +- ca->ack_cnt += acked; /* count the number of ACKed packets */ +- +- if (ca->last_cwnd == cwnd && +- (__s32)(tcp_jiffies32 - ca->last_time) <= HZ / 32) +- return; +- +- /* The CUBIC function can update ca->cnt at most once per jiffy. +- * On all cwnd reduction events, ca->epoch_start is set to 0, +- * which will force a recalculation of ca->cnt. +- */ +- if (ca->epoch_start && tcp_jiffies32 == ca->last_time) +- goto tcp_friendliness; +- +- ca->last_cwnd = cwnd; +- ca->last_time = tcp_jiffies32; +- +- if (ca->epoch_start == 0) { +- ca->epoch_start = tcp_jiffies32; /* record beginning */ +- ca->ack_cnt = acked; /* start counting */ +- ca->tcp_cwnd = cwnd; /* syn with cubic */ +- +- if (ca->last_max_cwnd <= cwnd) { +- ca->bic_K = 0; +- ca->bic_origin_point = cwnd; +- } else { +- /* Compute new K based on +- * (wmax-cwnd) * (srtt>>3 / HZ) / c * 2^(3*bictcp_HZ) +- */ +- ca->bic_K = cubic_root(cube_factor +- * (ca->last_max_cwnd - cwnd)); +- ca->bic_origin_point = ca->last_max_cwnd; +- } +- } +- +- /* cubic function - calc*/ +- /* calculate c * time^3 / rtt, +- * while considering overflow in calculation of time^3 +- * (so time^3 is done by using 64 bit) +- * and without the support of division of 64bit numbers +- * (so all divisions are done by using 32 bit) +- * also NOTE the unit of those veriables +- * time = (t - K) / 2^bictcp_HZ +- * c = bic_scale >> 10 +- * rtt = (srtt >> 3) / HZ +- * !!! The following code does not have overflow problems, +- * if the cwnd < 1 million packets !!! +- */ +- +- t = (__s32)(tcp_jiffies32 - ca->epoch_start) * USEC_PER_JIFFY; +- t += ca->delay_min; +- /* change the unit from usec to bictcp_HZ */ +- t <<= BICTCP_HZ; +- t /= USEC_PER_SEC; +- +- if (t < ca->bic_K) /* t - K */ +- offs = ca->bic_K - t; +- else +- offs = t - ca->bic_K; +- +- /* c/rtt * (t-K)^3 */ +- delta = (cube_rtt_scale * offs * offs * offs) >> (10+3*BICTCP_HZ); +- if (t < ca->bic_K) /* below origin*/ +- bic_target = ca->bic_origin_point - delta; +- else /* above origin*/ +- bic_target = ca->bic_origin_point + delta; +- +- /* cubic function - calc bictcp_cnt*/ +- if (bic_target > cwnd) { +- ca->cnt = cwnd / (bic_target - cwnd); +- } else { +- ca->cnt = 100 * cwnd; /* very small increment*/ +- } +- +- /* +- * The initial growth of cubic function may be too conservative +- * when the available bandwidth is still unknown. +- */ +- if (ca->last_max_cwnd == 0 && ca->cnt > 20) +- ca->cnt = 20; /* increase cwnd 5% per RTT */ +- +-tcp_friendliness: +- /* TCP Friendly */ +- if (tcp_friendliness) { +- __u32 scale = beta_scale; +- __u32 n; +- +- /* update tcp cwnd */ +- delta = (cwnd * scale) >> 3; +- if (ca->ack_cnt > delta && delta) { +- n = ca->ack_cnt / delta; +- ca->ack_cnt -= n * delta; +- ca->tcp_cwnd += n; +- } +- +- if (ca->tcp_cwnd > cwnd) { /* if bic is slower than tcp */ +- delta = ca->tcp_cwnd - cwnd; +- max_cnt = cwnd / delta; +- if (ca->cnt > max_cnt) +- ca->cnt = max_cnt; +- } +- } +- +- /* The maximum rate of cwnd increase CUBIC allows is 1 packet per +- * 2 packets ACKed, meaning cwnd grows at 1.5x per RTT. +- */ +- ca->cnt = max(ca->cnt, 2U); +-} +- +-/* Or simply use the BPF_STRUCT_OPS to avoid the SEC boiler plate. */ +-void BPF_STRUCT_OPS(bpf_cubic_cong_avoid, struct sock *sk, __u32 ack, __u32 acked) +-{ +- struct tcp_sock *tp = tcp_sk(sk); +- struct bictcp *ca = inet_csk_ca(sk); +- +- if (!tcp_is_cwnd_limited(sk)) +- return; +- +- if (tcp_in_slow_start(tp)) { +- if (hystart && after(ack, ca->end_seq)) +- bictcp_hystart_reset(sk); +- acked = tcp_slow_start(tp, acked); +- if (!acked) +- return; +- } +- bictcp_update(ca, tp->snd_cwnd, acked); +- tcp_cong_avoid_ai(tp, ca->cnt, acked); +-} +- +-__u32 BPF_STRUCT_OPS(bpf_cubic_recalc_ssthresh, struct sock *sk) +-{ +- const struct tcp_sock *tp = tcp_sk(sk); +- struct bictcp *ca = inet_csk_ca(sk); +- +- ca->epoch_start = 0; /* end of epoch */ +- +- /* Wmax and fast convergence */ +- if (tp->snd_cwnd < ca->last_max_cwnd && fast_convergence) +- ca->last_max_cwnd = (tp->snd_cwnd * (BICTCP_BETA_SCALE + beta)) +- / (2 * BICTCP_BETA_SCALE); +- else +- ca->last_max_cwnd = tp->snd_cwnd; +- +- return max((tp->snd_cwnd * beta) / BICTCP_BETA_SCALE, 2U); +-} +- +-void BPF_STRUCT_OPS(bpf_cubic_state, struct sock *sk, __u8 new_state) +-{ +- if (new_state == TCP_CA_Loss) { +- bictcp_reset(inet_csk_ca(sk)); +- bictcp_hystart_reset(sk); +- } +-} +- +-#define GSO_MAX_SIZE 65536 +- +-/* Account for TSO/GRO delays. +- * Otherwise short RTT flows could get too small ssthresh, since during +- * slow start we begin with small TSO packets and ca->delay_min would +- * not account for long aggregation delay when TSO packets get bigger. +- * Ideally even with a very small RTT we would like to have at least one +- * TSO packet being sent and received by GRO, and another one in qdisc layer. +- * We apply another 100% factor because @rate is doubled at this point. +- * We cap the cushion to 1ms. +- */ +-static __always_inline __u32 hystart_ack_delay(struct sock *sk) +-{ +- unsigned long rate; +- +- rate = sk->sk_pacing_rate; +- if (!rate) +- return 0; +- return min((__u64)USEC_PER_MSEC, +- div64_ul((__u64)GSO_MAX_SIZE * 4 * USEC_PER_SEC, rate)); +-} +- +-static __always_inline void hystart_update(struct sock *sk, __u32 delay) +-{ +- struct tcp_sock *tp = tcp_sk(sk); +- struct bictcp *ca = inet_csk_ca(sk); +- __u32 threshold; +- +- if (hystart_detect & HYSTART_ACK_TRAIN) { +- __u32 now = bictcp_clock_us(sk); +- +- /* first detection parameter - ack-train detection */ +- if ((__s32)(now - ca->last_ack) <= hystart_ack_delta_us) { +- ca->last_ack = now; +- +- threshold = ca->delay_min + hystart_ack_delay(sk); +- +- /* Hystart ack train triggers if we get ack past +- * ca->delay_min/2. +- * Pacing might have delayed packets up to RTT/2 +- * during slow start. +- */ +- if (sk->sk_pacing_status == SK_PACING_NONE) +- threshold >>= 1; +- +- if ((__s32)(now - ca->round_start) > threshold) { +- ca->found = 1; +- tp->snd_ssthresh = tp->snd_cwnd; +- } +- } +- } +- +- if (hystart_detect & HYSTART_DELAY) { +- /* obtain the minimum delay of more than sampling packets */ +- if (ca->curr_rtt > delay) +- ca->curr_rtt = delay; +- if (ca->sample_cnt < HYSTART_MIN_SAMPLES) { +- ca->sample_cnt++; +- } else { +- if (ca->curr_rtt > ca->delay_min + +- HYSTART_DELAY_THRESH(ca->delay_min >> 3)) { +- ca->found = 1; +- tp->snd_ssthresh = tp->snd_cwnd; +- } +- } +- } +-} +- +-void BPF_STRUCT_OPS(bpf_cubic_acked, struct sock *sk, +- const struct ack_sample *sample) +-{ +- const struct tcp_sock *tp = tcp_sk(sk); +- struct bictcp *ca = inet_csk_ca(sk); +- __u32 delay; +- +- /* Some calls are for duplicates without timetamps */ +- if (sample->rtt_us < 0) +- return; +- +- /* Discard delay samples right after fast recovery */ +- if (ca->epoch_start && (__s32)(tcp_jiffies32 - ca->epoch_start) < HZ) +- return; +- +- delay = sample->rtt_us; +- if (delay == 0) +- delay = 1; +- +- /* first time call or link delay decreases */ +- if (ca->delay_min == 0 || ca->delay_min > delay) +- ca->delay_min = delay; +- +- /* hystart triggers when cwnd is larger than some threshold */ +- if (!ca->found && tcp_in_slow_start(tp) && hystart && +- tp->snd_cwnd >= hystart_low_window) +- hystart_update(sk, delay); +-} +- +-extern __u32 tcp_reno_undo_cwnd(struct sock *sk) __ksym; +- +-__u32 BPF_STRUCT_OPS(bpf_cubic_undo_cwnd, struct sock *sk) +-{ +- return tcp_reno_undo_cwnd(sk); +-} +- +-SEC(".struct_ops") +-struct tcp_congestion_ops cubic = { +- .init = (void *)bpf_cubic_init, +- .ssthresh = (void *)bpf_cubic_recalc_ssthresh, +- .cong_avoid = (void *)bpf_cubic_cong_avoid, +- .set_state = (void *)bpf_cubic_state, +- .undo_cwnd = (void *)bpf_cubic_undo_cwnd, +- .cwnd_event = (void *)bpf_cubic_cwnd_event, +- .pkts_acked = (void *)bpf_cubic_acked, +- .name = "bpf_cubic", +-}; +diff --git a/tools/testing/selftests/bpf/progs/bpf_dctcp.c b/tools/testing/selftests/bpf/progs/bpf_dctcp.c +deleted file mode 100644 +index fd42247da8b4..000000000000 +--- a/tools/testing/selftests/bpf/progs/bpf_dctcp.c ++++ /dev/null +@@ -1,224 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2019 Facebook */ +- +-/* WARNING: This implemenation is not necessarily the same +- * as the tcp_dctcp.c. The purpose is mainly for testing +- * the kernel BPF logic. +- */ +- +-#include <stddef.h> +-#include <linux/bpf.h> +-#include <linux/types.h> +-#include <linux/stddef.h> +-#include <linux/tcp.h> +-#include <bpf/bpf_helpers.h> +-#include <bpf/bpf_tracing.h> +-#include "bpf_tcp_helpers.h" +- +-char _license[] SEC("license") = "GPL"; +- +-int stg_result = 0; +- +-struct { +- __uint(type, BPF_MAP_TYPE_SK_STORAGE); +- __uint(map_flags, BPF_F_NO_PREALLOC); +- __type(key, int); +- __type(value, int); +-} sk_stg_map SEC(".maps"); +- +-#define DCTCP_MAX_ALPHA 1024U +- +-struct dctcp { +- __u32 old_delivered; +- __u32 old_delivered_ce; +- __u32 prior_rcv_nxt; +- __u32 dctcp_alpha; +- __u32 next_seq; +- __u32 ce_state; +- __u32 loss_cwnd; +-}; +- +-static unsigned int dctcp_shift_g = 4; /* g = 1/2^4 */ +-static unsigned int dctcp_alpha_on_init = DCTCP_MAX_ALPHA; +- +-static __always_inline void dctcp_reset(const struct tcp_sock *tp, +- struct dctcp *ca) +-{ +- ca->next_seq = tp->snd_nxt; +- +- ca->old_delivered = tp->delivered; +- ca->old_delivered_ce = tp->delivered_ce; +-} +- +-SEC("struct_ops/dctcp_init") +-void BPF_PROG(dctcp_init, struct sock *sk) +-{ +- const struct tcp_sock *tp = tcp_sk(sk); +- struct dctcp *ca = inet_csk_ca(sk); +- int *stg; +- +- ca->prior_rcv_nxt = tp->rcv_nxt; +- ca->dctcp_alpha = min(dctcp_alpha_on_init, DCTCP_MAX_ALPHA); +- ca->loss_cwnd = 0; +- ca->ce_state = 0; +- +- stg = bpf_sk_storage_get(&sk_stg_map, (void *)tp, NULL, 0); +- if (stg) { +- stg_result = *stg; +- bpf_sk_storage_delete(&sk_stg_map, (void *)tp); +- } +- dctcp_reset(tp, ca); +-} +- +-SEC("struct_ops/dctcp_ssthresh") +-__u32 BPF_PROG(dctcp_ssthresh, struct sock *sk) +-{ +- struct dctcp *ca = inet_csk_ca(sk); +- struct tcp_sock *tp = tcp_sk(sk); +- +- ca->loss_cwnd = tp->snd_cwnd; +- return max(tp->snd_cwnd - ((tp->snd_cwnd * ca->dctcp_alpha) >> 11U), 2U); +-} +- +-SEC("struct_ops/dctcp_update_alpha") +-void BPF_PROG(dctcp_update_alpha, struct sock *sk, __u32 flags) +-{ +- const struct tcp_sock *tp = tcp_sk(sk); +- struct dctcp *ca = inet_csk_ca(sk); +- +- /* Expired RTT */ +- if (!before(tp->snd_una, ca->next_seq)) { +- __u32 delivered_ce = tp->delivered_ce - ca->old_delivered_ce; +- __u32 alpha = ca->dctcp_alpha; +- +- /* alpha = (1 - g) * alpha + g * F */ +- +- alpha -= min_not_zero(alpha, alpha >> dctcp_shift_g); +- if (delivered_ce) { +- __u32 delivered = tp->delivered - ca->old_delivered; +- +- /* If dctcp_shift_g == 1, a 32bit value would overflow +- * after 8 M packets. +- */ +- delivered_ce <<= (10 - dctcp_shift_g); +- delivered_ce /= max(1U, delivered); +- +- alpha = min(alpha + delivered_ce, DCTCP_MAX_ALPHA); +- } +- ca->dctcp_alpha = alpha; +- dctcp_reset(tp, ca); +- } +-} +- +-static __always_inline void dctcp_react_to_loss(struct sock *sk) +-{ +- struct dctcp *ca = inet_csk_ca(sk); +- struct tcp_sock *tp = tcp_sk(sk); +- +- ca->loss_cwnd = tp->snd_cwnd; +- tp->snd_ssthresh = max(tp->snd_cwnd >> 1U, 2U); +-} +- +-SEC("struct_ops/dctcp_state") +-void BPF_PROG(dctcp_state, struct sock *sk, __u8 new_state) +-{ +- if (new_state == TCP_CA_Recovery && +- new_state != BPF_CORE_READ_BITFIELD(inet_csk(sk), icsk_ca_state)) +- dctcp_react_to_loss(sk); +- /* We handle RTO in dctcp_cwnd_event to ensure that we perform only +- * one loss-adjustment per RTT. +- */ +-} +- +-static __always_inline void dctcp_ece_ack_cwr(struct sock *sk, __u32 ce_state) +-{ +- struct tcp_sock *tp = tcp_sk(sk); +- +- if (ce_state == 1) +- tp->ecn_flags |= TCP_ECN_DEMAND_CWR; +- else +- tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR; +-} +- +-/* Minimal DCTP CE state machine: +- * +- * S: 0 <- last pkt was non-CE +- * 1 <- last pkt was CE +- */ +-static __always_inline +-void dctcp_ece_ack_update(struct sock *sk, enum tcp_ca_event evt, +- __u32 *prior_rcv_nxt, __u32 *ce_state) +-{ +- __u32 new_ce_state = (evt == CA_EVENT_ECN_IS_CE) ? 1 : 0; +- +- if (*ce_state != new_ce_state) { +- /* CE state has changed, force an immediate ACK to +- * reflect the new CE state. If an ACK was delayed, +- * send that first to reflect the prior CE state. +- */ +- if (inet_csk(sk)->icsk_ack.pending & ICSK_ACK_TIMER) { +- dctcp_ece_ack_cwr(sk, *ce_state); +- bpf_tcp_send_ack(sk, *prior_rcv_nxt); +- } +- inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_NOW; +- } +- *prior_rcv_nxt = tcp_sk(sk)->rcv_nxt; +- *ce_state = new_ce_state; +- dctcp_ece_ack_cwr(sk, new_ce_state); +-} +- +-SEC("struct_ops/dctcp_cwnd_event") +-void BPF_PROG(dctcp_cwnd_event, struct sock *sk, enum tcp_ca_event ev) +-{ +- struct dctcp *ca = inet_csk_ca(sk); +- +- switch (ev) { +- case CA_EVENT_ECN_IS_CE: +- case CA_EVENT_ECN_NO_CE: +- dctcp_ece_ack_update(sk, ev, &ca->prior_rcv_nxt, &ca->ce_state); +- break; +- case CA_EVENT_LOSS: +- dctcp_react_to_loss(sk); +- break; +- default: +- /* Don't care for the rest. */ +- break; +- } +-} +- +-SEC("struct_ops/dctcp_cwnd_undo") +-__u32 BPF_PROG(dctcp_cwnd_undo, struct sock *sk) +-{ +- const struct dctcp *ca = inet_csk_ca(sk); +- +- return max(tcp_sk(sk)->snd_cwnd, ca->loss_cwnd); +-} +- +-extern void tcp_reno_cong_avoid(struct sock *sk, __u32 ack, __u32 acked) __ksym; +- +-SEC("struct_ops/dctcp_reno_cong_avoid") +-void BPF_PROG(dctcp_cong_avoid, struct sock *sk, __u32 ack, __u32 acked) +-{ +- tcp_reno_cong_avoid(sk, ack, acked); +-} +- +-SEC(".struct_ops") +-struct tcp_congestion_ops dctcp_nouse = { +- .init = (void *)dctcp_init, +- .set_state = (void *)dctcp_state, +- .flags = TCP_CONG_NEEDS_ECN, +- .name = "bpf_dctcp_nouse", +-}; +- +-SEC(".struct_ops") +-struct tcp_congestion_ops dctcp = { +- .init = (void *)dctcp_init, +- .in_ack_event = (void *)dctcp_update_alpha, +- .cwnd_event = (void *)dctcp_cwnd_event, +- .ssthresh = (void *)dctcp_ssthresh, +- .cong_avoid = (void *)dctcp_cong_avoid, +- .undo_cwnd = (void *)dctcp_cwnd_undo, +- .set_state = (void *)dctcp_state, +- .flags = TCP_CONG_NEEDS_ECN, +- .name = "bpf_dctcp", +-}; +diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test.c b/tools/testing/selftests/bpf/progs/kfunc_call_test.c +deleted file mode 100644 +index 470f8723e463..000000000000 +--- a/tools/testing/selftests/bpf/progs/kfunc_call_test.c ++++ /dev/null +@@ -1,47 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +-#include <linux/bpf.h> +-#include <bpf/bpf_helpers.h> +-#include "bpf_tcp_helpers.h" +- +-extern int bpf_kfunc_call_test2(struct sock *sk, __u32 a, __u32 b) __ksym; +-extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b, +- __u32 c, __u64 d) __ksym; +- +-SEC("classifier") +-int kfunc_call_test2(struct __sk_buff *skb) +-{ +- struct bpf_sock *sk = skb->sk; +- +- if (!sk) +- return -1; +- +- sk = bpf_sk_fullsock(sk); +- if (!sk) +- return -1; +- +- return bpf_kfunc_call_test2((struct sock *)sk, 1, 2); +-} +- +-SEC("classifier") +-int kfunc_call_test1(struct __sk_buff *skb) +-{ +- struct bpf_sock *sk = skb->sk; +- __u64 a = 1ULL << 32; +- __u32 ret; +- +- if (!sk) +- return -1; +- +- sk = bpf_sk_fullsock(sk); +- if (!sk) +- return -1; +- +- a = bpf_kfunc_call_test1((struct sock *)sk, 1, a | 2, 3, a | 4); +- ret = a >> 32; /* ret should be 2 */ +- ret += (__u32)a; /* ret should be 12 */ +- +- return ret; +-} +- +-char _license[] SEC("license") = "GPL"; +diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c +deleted file mode 100644 +index b2dcb7d9cb03..000000000000 +--- a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c ++++ /dev/null +@@ -1,42 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +-#include <linux/bpf.h> +-#include <bpf/bpf_helpers.h> +-#include "bpf_tcp_helpers.h" +- +-extern const int bpf_prog_active __ksym; +-extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b, +- __u32 c, __u64 d) __ksym; +-extern struct sock *bpf_kfunc_call_test3(struct sock *sk) __ksym; +-int active_res = -1; +-int sk_state = -1; +- +-int __noinline f1(struct __sk_buff *skb) +-{ +- struct bpf_sock *sk = skb->sk; +- int *active; +- +- if (!sk) +- return -1; +- +- sk = bpf_sk_fullsock(sk); +- if (!sk) +- return -1; +- +- active = (int *)bpf_per_cpu_ptr(&bpf_prog_active, +- bpf_get_smp_processor_id()); +- if (active) +- active_res = *active; +- +- sk_state = bpf_kfunc_call_test3((struct sock *)sk)->__sk_common.skc_state; +- +- return (__u32)bpf_kfunc_call_test1((struct sock *)sk, 1, 2, 3, 4); +-} +- +-SEC("classifier") +-int kfunc_call_test1(struct __sk_buff *skb) +-{ +- return f1(skb); +-} +- +-char _license[] SEC("license") = "GPL"; +diff --git a/tools/testing/selftests/bpf/progs/linked_funcs1.c b/tools/testing/selftests/bpf/progs/linked_funcs1.c +deleted file mode 100644 +index b964ec1390c2..000000000000 +--- a/tools/testing/selftests/bpf/progs/linked_funcs1.c ++++ /dev/null +@@ -1,73 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include "vmlinux.h" +-#include <bpf/bpf_helpers.h> +-#include <bpf/bpf_tracing.h> +- +-/* weak and shared between two files */ +-const volatile int my_tid __weak; +-long syscall_id __weak; +- +-int output_val1; +-int output_ctx1; +-int output_weak1; +- +-/* same "subprog" name in all files, but it's ok because they all are static */ +-static __noinline int subprog(int x) +-{ +- /* but different formula */ +- return x * 1; +-} +- +-/* Global functions can't be void */ +-int set_output_val1(int x) +-{ +- output_val1 = x + subprog(x); +- return x; +-} +- +-/* This function can't be verified as global, as it assumes raw_tp/sys_enter +- * context and accesses syscall id (second argument). So we mark it as +- * __hidden, so that libbpf will mark it as static in the final object file, +- * right before verifying it in the kernel. +- * +- * But we don't mark it as __hidden here, rather at extern site. __hidden is +- * "contaminating" visibility, so it will get propagated from either extern or +- * actual definition (including from the losing __weak definition). +- */ +-void set_output_ctx1(__u64 *ctx) +-{ +- output_ctx1 = ctx[1]; /* long id, same as in BPF_PROG below */ +-} +- +-/* this weak instance should win because it's the first one */ +-__weak int set_output_weak(int x) +-{ +- output_weak1 = x; +- return x; +-} +- +-extern int set_output_val2(int x); +- +-/* here we'll force set_output_ctx2() to be __hidden in the final obj file */ +-__hidden extern void set_output_ctx2(__u64 *ctx); +- +-SEC("raw_tp/sys_enter") +-int BPF_PROG(handler1, struct pt_regs *regs, long id) +-{ +- if (my_tid != (u32)bpf_get_current_pid_tgid() || id != syscall_id) +- return 0; +- +- set_output_val2(1000); +- set_output_ctx2(ctx); /* ctx definition is hidden in BPF_PROG macro */ +- +- /* keep input value the same across both files to avoid dependency on +- * handler call order; differentiate by output_weak1 vs output_weak2. +- */ +- set_output_weak(42); +- +- return 0; +-} +- +-char LICENSE[] SEC("license") = "GPL"; +diff --git a/tools/testing/selftests/bpf/progs/linked_funcs2.c b/tools/testing/selftests/bpf/progs/linked_funcs2.c +deleted file mode 100644 +index 575e958e60b7..000000000000 +--- a/tools/testing/selftests/bpf/progs/linked_funcs2.c ++++ /dev/null +@@ -1,73 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include "vmlinux.h" +-#include <bpf/bpf_helpers.h> +-#include <bpf/bpf_tracing.h> +- +-/* weak and shared between both files */ +-const volatile int my_tid __weak; +-long syscall_id __weak; +- +-int output_val2; +-int output_ctx2; +-int output_weak2; /* should stay zero */ +- +-/* same "subprog" name in all files, but it's ok because they all are static */ +-static __noinline int subprog(int x) +-{ +- /* but different formula */ +- return x * 2; +-} +- +-/* Global functions can't be void */ +-int set_output_val2(int x) +-{ +- output_val2 = 2 * x + 2 * subprog(x); +- return 2 * x; +-} +- +-/* This function can't be verified as global, as it assumes raw_tp/sys_enter +- * context and accesses syscall id (second argument). So we mark it as +- * __hidden, so that libbpf will mark it as static in the final object file, +- * right before verifying it in the kernel. +- * +- * But we don't mark it as __hidden here, rather at extern site. __hidden is +- * "contaminating" visibility, so it will get propagated from either extern or +- * actual definition (including from the losing __weak definition). +- */ +-void set_output_ctx2(__u64 *ctx) +-{ +- output_ctx2 = ctx[1]; /* long id, same as in BPF_PROG below */ +-} +- +-/* this weak instance should lose, because it will be processed second */ +-__weak int set_output_weak(int x) +-{ +- output_weak2 = x; +- return 2 * x; +-} +- +-extern int set_output_val1(int x); +- +-/* here we'll force set_output_ctx1() to be __hidden in the final obj file */ +-__hidden extern void set_output_ctx1(__u64 *ctx); +- +-SEC("raw_tp/sys_enter") +-int BPF_PROG(handler2, struct pt_regs *regs, long id) +-{ +- if (my_tid != (u32)bpf_get_current_pid_tgid() || id != syscall_id) +- return 0; +- +- set_output_val1(2000); +- set_output_ctx1(ctx); /* ctx definition is hidden in BPF_PROG macro */ +- +- /* keep input value the same across both files to avoid dependency on +- * handler call order; differentiate by output_weak1 vs output_weak2. +- */ +- set_output_weak(42); +- +- return 0; +-} +- +-char LICENSE[] SEC("license") = "GPL"; +diff --git a/tools/testing/selftests/bpf/progs/linked_maps2.c b/tools/testing/selftests/bpf/progs/linked_maps2.c +deleted file mode 100644 +index 0693687474ed..000000000000 +--- a/tools/testing/selftests/bpf/progs/linked_maps2.c ++++ /dev/null +@@ -1,76 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include "vmlinux.h" +-#include <bpf/bpf_helpers.h> +-#include <bpf/bpf_tracing.h> +- +-/* modifiers and typedefs are ignored when comparing key/value types */ +-typedef struct my_key { long x; } key_type; +-typedef struct my_value { long x; } value_type; +- +-extern struct { +- __uint(max_entries, 16); +- __type(key, key_type); +- __type(value, value_type); +- __uint(type, BPF_MAP_TYPE_HASH); +-} map1 SEC(".maps"); +- +-struct { +- __uint(type, BPF_MAP_TYPE_ARRAY); +- __type(key, int); +- __type(value, int); +- __uint(max_entries, 8); +-} map2 SEC(".maps"); +- +-/* this definition will lose, but it has to exactly match the winner */ +-struct { +- __uint(type, BPF_MAP_TYPE_ARRAY); +- __type(key, int); +- __type(value, int); +- __uint(max_entries, 16); +-} map_weak __weak SEC(".maps"); +- +-int output_first2; +-int output_second2; +-int output_weak2; +- +-SEC("raw_tp/sys_enter") +-int BPF_PROG(handler_enter2) +-{ +- /* update values with key = 2 */ +- int key = 2, val = 2; +- key_type key_struct = { .x = 2 }; +- value_type val_struct = { .x = 2000 }; +- +- bpf_map_update_elem(&map1, &key_struct, &val_struct, 0); +- bpf_map_update_elem(&map2, &key, &val, 0); +- bpf_map_update_elem(&map_weak, &key, &val, 0); +- +- return 0; +-} +- +-SEC("raw_tp/sys_exit") +-int BPF_PROG(handler_exit2) +-{ +- /* lookup values with key = 1, set in another file */ +- int key = 1, *val; +- key_type key_struct = { .x = 1 }; +- value_type *value_struct; +- +- value_struct = bpf_map_lookup_elem(&map1, &key_struct); +- if (value_struct) +- output_first2 = value_struct->x; +- +- val = bpf_map_lookup_elem(&map2, &key); +- if (val) +- output_second2 = *val; +- +- val = bpf_map_lookup_elem(&map_weak, &key); +- if (val) +- output_weak2 = *val; +- +- return 0; +-} +- +-char LICENSE[] SEC("license") = "GPL"; +diff --git a/tools/testing/selftests/bpf/progs/linked_vars1.c b/tools/testing/selftests/bpf/progs/linked_vars1.c +deleted file mode 100644 +index ef9e9d0bb0ca..000000000000 +--- a/tools/testing/selftests/bpf/progs/linked_vars1.c ++++ /dev/null +@@ -1,54 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include "vmlinux.h" +-#include <bpf/bpf_helpers.h> +-#include <bpf/bpf_tracing.h> +- +-extern int LINUX_KERNEL_VERSION __kconfig; +-/* this weak extern will be strict due to the other file's strong extern */ +-extern bool CONFIG_BPF_SYSCALL __kconfig __weak; +-extern const void bpf_link_fops __ksym __weak; +- +-int input_bss1; +-int input_data1 = 1; +-const volatile int input_rodata1 = 11; +- +-int input_bss_weak __weak; +-/* these two definitions should win */ +-int input_data_weak __weak = 10; +-const volatile int input_rodata_weak __weak = 100; +- +-extern int input_bss2; +-extern int input_data2; +-extern const int input_rodata2; +- +-int output_bss1; +-int output_data1; +-int output_rodata1; +- +-long output_sink1; +- +-static __noinline int get_bss_res(void) +-{ +- /* just make sure all the relocations work against .text as well */ +- return input_bss1 + input_bss2 + input_bss_weak; +-} +- +-SEC("raw_tp/sys_enter") +-int BPF_PROG(handler1) +-{ +- output_bss1 = get_bss_res(); +- output_data1 = input_data1 + input_data2 + input_data_weak; +- output_rodata1 = input_rodata1 + input_rodata2 + input_rodata_weak; +- +- /* make sure we actually use above special externs, otherwise compiler +- * will optimize them out +- */ +- output_sink1 = LINUX_KERNEL_VERSION +- + CONFIG_BPF_SYSCALL +- + (long)&bpf_link_fops; +- return 0; +-} +- +-char LICENSE[] SEC("license") = "GPL"; +diff --git a/tools/testing/selftests/bpf/progs/linked_vars2.c b/tools/testing/selftests/bpf/progs/linked_vars2.c +deleted file mode 100644 +index e4f5bd388a3c..000000000000 +--- a/tools/testing/selftests/bpf/progs/linked_vars2.c ++++ /dev/null +@@ -1,55 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0 +-/* Copyright (c) 2021 Facebook */ +- +-#include "vmlinux.h" +-#include <bpf/bpf_helpers.h> +-#include <bpf/bpf_tracing.h> +- +-extern int LINUX_KERNEL_VERSION __kconfig; +-/* when an extern is defined as both strong and weak, resulting symbol will be strong */ +-extern bool CONFIG_BPF_SYSCALL __kconfig; +-extern const void __start_BTF __ksym; +- +-int input_bss2; +-int input_data2 = 2; +-const volatile int input_rodata2 = 22; +- +-int input_bss_weak __weak; +-/* these two weak variables should lose */ +-int input_data_weak __weak = 20; +-const volatile int input_rodata_weak __weak = 200; +- +-extern int input_bss1; +-extern int input_data1; +-extern const int input_rodata1; +- +-int output_bss2; +-int output_data2; +-int output_rodata2; +- +-int output_sink2; +- +-static __noinline int get_data_res(void) +-{ +- /* just make sure all the relocations work against .text as well */ +- return input_data1 + input_data2 + input_data_weak; +-} +- +-SEC("raw_tp/sys_enter") +-int BPF_PROG(handler2) +-{ +- output_bss2 = input_bss1 + input_bss2 + input_bss_weak; +- output_data2 = get_data_res(); +- output_rodata2 = input_rodata1 + input_rodata2 + input_rodata_weak; +- +- /* make sure we actually use above special externs, otherwise compiler +- * will optimize them out +- */ +- output_sink2 = LINUX_KERNEL_VERSION +- + CONFIG_BPF_SYSCALL +- + (long)&__start_BTF; +- +- return 0; +-} +- +-char LICENSE[] SEC("license") = "GPL"; |