diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cpumask.h | 5 | ||||
| -rw-r--r-- | include/linux/instrumented.h | 35 | ||||
| -rw-r--r-- | include/linux/kexec.h | 6 | ||||
| -rw-r--r-- | include/linux/kfifo.h | 9 | ||||
| -rw-r--r-- | include/linux/kmsan-checks.h | 15 | ||||
| -rw-r--r-- | include/linux/nmi.h | 2 |
6 files changed, 61 insertions, 11 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index e8c412ee6400d..7600e877908fb 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -1057,11 +1057,6 @@ void init_cpu_present(const struct cpumask *src); void init_cpu_possible(const struct cpumask *src); void init_cpu_online(const struct cpumask *src); -static inline void reset_cpu_possible_mask(void) -{ - bitmap_zero(cpumask_bits(&__cpu_possible_mask), NR_CPUS); -} - static inline void set_cpu_possible(unsigned int cpu, bool possible) { diff --git a/include/linux/instrumented.h b/include/linux/instrumented.h index 1b608e00290aa..711a1f0d1a735 100644 --- a/include/linux/instrumented.h +++ b/include/linux/instrumented.h @@ -148,6 +148,41 @@ instrument_copy_from_user_after(const void *to, const void __user *from, } /** + * instrument_memcpy_before - add instrumentation before non-instrumented memcpy + * @to: destination address + * @from: source address + * @n: number of bytes to copy + * + * Instrument memory accesses that happen in custom memcpy implementations. The + * instrumentation should be inserted before the memcpy call. + */ +static __always_inline void instrument_memcpy_before(void *to, const void *from, + unsigned long n) +{ + kasan_check_write(to, n); + kasan_check_read(from, n); + kcsan_check_write(to, n); + kcsan_check_read(from, n); +} + +/** + * instrument_memcpy_after - add instrumentation after non-instrumented memcpy + * @to: destination address + * @from: source address + * @n: number of bytes to copy + * @left: number of bytes not copied (if known) + * + * Instrument memory accesses that happen in custom memcpy implementations. The + * instrumentation should be inserted after the memcpy call. + */ +static __always_inline void instrument_memcpy_after(void *to, const void *from, + unsigned long n, + unsigned long left) +{ + kmsan_memmove(to, from, n - left); +} + +/** * instrument_get_user() - add instrumentation to get_user()-like macros * @to: destination variable, may not be address-taken * diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 5b93a5767413a..f0e9f8eda7a3c 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -464,10 +464,8 @@ static inline void arch_kexec_pre_free_pages(void *vaddr, unsigned int pages) { extern bool kexec_file_dbg_print; -#define kexec_dprintk(fmt, ...) \ - printk("%s" fmt, \ - kexec_file_dbg_print ? KERN_INFO : KERN_DEBUG, \ - ##__VA_ARGS__) +#define kexec_dprintk(fmt, arg...) \ + do { if (kexec_file_dbg_print) pr_info(fmt, ##arg); } while (0) #else /* !CONFIG_KEXEC_CORE */ struct pt_regs; diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h index 0b35a41440ff1..6b28d642f3325 100644 --- a/include/linux/kfifo.h +++ b/include/linux/kfifo.h @@ -36,10 +36,15 @@ * to lock the reader. */ -#include <linux/kernel.h> +#include <linux/array_size.h> #include <linux/spinlock.h> #include <linux/stddef.h> -#include <linux/scatterlist.h> +#include <linux/types.h> + +#include <asm/barrier.h> +#include <asm/errno.h> + +struct scatterlist; struct __kfifo { unsigned int in; diff --git a/include/linux/kmsan-checks.h b/include/linux/kmsan-checks.h index c4cae333deec5..e1082dc40abc2 100644 --- a/include/linux/kmsan-checks.h +++ b/include/linux/kmsan-checks.h @@ -61,6 +61,17 @@ void kmsan_check_memory(const void *address, size_t size); void kmsan_copy_to_user(void __user *to, const void *from, size_t to_copy, size_t left); +/** + * kmsan_memmove() - Notify KMSAN about a data copy within kernel. + * @to: destination address in the kernel. + * @from: source address in the kernel. + * @size: number of bytes to copy. + * + * Invoked after non-instrumented version (e.g. implemented using assembly + * code) of memmove()/memcpy() is called, in order to copy KMSAN's metadata. + */ +void kmsan_memmove(void *to, const void *from, size_t to_copy); + #else static inline void kmsan_poison_memory(const void *address, size_t size, @@ -78,6 +89,10 @@ static inline void kmsan_copy_to_user(void __user *to, const void *from, { } +static inline void kmsan_memmove(void *to, const void *from, size_t to_copy) +{ +} + #endif #endif /* _LINUX_KMSAN_CHECKS_H */ diff --git a/include/linux/nmi.h b/include/linux/nmi.h index f53438eae815d..a8dfb38c9bb6f 100644 --- a/include/linux/nmi.h +++ b/include/linux/nmi.h @@ -105,10 +105,12 @@ void watchdog_hardlockup_check(unsigned int cpu, struct pt_regs *regs); extern void hardlockup_detector_perf_stop(void); extern void hardlockup_detector_perf_restart(void); extern void hardlockup_detector_perf_cleanup(void); +extern void hardlockup_config_perf_event(const char *str); #else static inline void hardlockup_detector_perf_stop(void) { } static inline void hardlockup_detector_perf_restart(void) { } static inline void hardlockup_detector_perf_cleanup(void) { } +static inline void hardlockup_config_perf_event(const char *str) { } #endif void watchdog_hardlockup_stop(void); |