diff options
Diffstat (limited to 'include/linux/compiler.h')
| -rw-r--r-- | include/linux/compiler.h | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 52e611ab9a6c..ab4711c63601 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -86,6 +86,11 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, # define barrier_data(ptr) barrier() #endif +/* workaround for GCC PR82365 if needed */ +#ifndef barrier_before_unreachable +# define barrier_before_unreachable() do { } while (0) +#endif + /* Unreachable code */ #ifdef CONFIG_STACK_VALIDATION /* @@ -185,23 +190,21 @@ void __read_once_size(const volatile void *p, void *res, int size) #ifdef CONFIG_KASAN /* - * This function is not 'inline' because __no_sanitize_address confilcts + * We can't declare function 'inline' because __no_sanitize_address confilcts * with inlining. Attempt to inline it may cause a build failure. * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67368 * '__maybe_unused' allows us to avoid defined-but-not-used warnings. */ -static __no_sanitize_address __maybe_unused -void __read_once_size_nocheck(const volatile void *p, void *res, int size) -{ - __READ_ONCE_SIZE; -} +# define __no_kasan_or_inline __no_sanitize_address __maybe_unused #else -static __always_inline +# define __no_kasan_or_inline __always_inline +#endif + +static __no_kasan_or_inline void __read_once_size_nocheck(const volatile void *p, void *res, int size) { __READ_ONCE_SIZE; } -#endif static __always_inline void __write_once_size(volatile void *p, void *res, int size) { @@ -240,6 +243,7 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s * required ordering. */ #include <asm/barrier.h> +#include <linux/kasan-checks.h> #define __READ_ONCE(x, check) \ ({ \ @@ -259,6 +263,13 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s */ #define READ_ONCE_NOCHECK(x) __READ_ONCE(x, 0) +static __no_kasan_or_inline +unsigned long read_word_at_a_time(const void *addr) +{ + kasan_check_read(addr, 1); + return *(unsigned long *)addr; +} + #define WRITE_ONCE(x, val) \ ({ \ union { typeof(x) __val; char __c[1]; } __u = \ @@ -271,6 +282,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s #endif /* __ASSEMBLY__ */ +#ifndef __optimize +# define __optimize(level) +#endif + /* Compile time object size, -1 for unknown */ #ifndef __compiletime_object_size # define __compiletime_object_size(obj) -1 |