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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-01-26 09:40:24 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-01-26 09:40:24 +0100 |
| commit | 48ee4835b73c48590d05a54730dc8037ebd39d3b (patch) | |
| tree | 84180182d393033da452823cb974880a368e1766 /include/linux/thread_info.h | |
| parent | 5ec1cebd59300ddd26dbaa96c17c508764eef911 (diff) | |
| parent | e783362eb54cd99b2cac8b3a9aeac942e6f6ac07 (diff) | |
Merge drm/drm-fixes into drm-misc-fixes
Backmerging drm/drm-fixes into drm-misc-fixes for v5.17-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'include/linux/thread_info.h')
| -rw-r--r-- | include/linux/thread_info.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index ad0c4e041030..73a6f34b3847 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -118,6 +118,15 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag) return test_bit(flag, (unsigned long *)&ti->flags); } +/* + * This may be used in noinstr code, and needs to be __always_inline to prevent + * inadvertent instrumentation. + */ +static __always_inline unsigned long read_ti_thread_flags(struct thread_info *ti) +{ + return READ_ONCE(ti->flags); +} + #define set_thread_flag(flag) \ set_ti_thread_flag(current_thread_info(), flag) #define clear_thread_flag(flag) \ @@ -130,6 +139,11 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag) test_and_clear_ti_thread_flag(current_thread_info(), flag) #define test_thread_flag(flag) \ test_ti_thread_flag(current_thread_info(), flag) +#define read_thread_flags() \ + read_ti_thread_flags(current_thread_info()) + +#define read_task_thread_flags(t) \ + read_ti_thread_flags(task_thread_info(t)) #ifdef CONFIG_GENERIC_ENTRY #define set_syscall_work(fl) \ |