diff options
| author |   Zefan Li <lizefan@huawei.com> | 2014-09-25 09:40:40 +0800 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2014-09-24 22:16:06 -0400 |
| commit | e0e5070b20e01f0321f97db4e4e174f3f6b49e50 (patch) | |
| tree | 4135aa645ae2bc041d72fcfd5e64f6544a0791f4 /include/linux/sched.h | |
| parent | sched: fix confusing PFA_NO_NEW_PRIVS constant (diff) | |
| download | linux-dev-e0e5070b20e01f0321f97db4e4e174f3f6b49e50.tar.xz linux-dev-e0e5070b20e01f0321f97db4e4e174f3f6b49e50.zip | |
sched: add macros to define bitops for task atomic flags
This will simplify code when we add new flags.
v3:
- Kees pointed out that no_new_privs should never be cleared, so we
shouldn't define task_clear_no_new_privs(). we define 3 macros instead
of a single one.
v2:
- updated scripts/tags.sh, suggested by Peter
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Miao Xie <miaox@cn.fujitsu.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 45577650f629..5630763956d9 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1959,15 +1959,18 @@ static inline void memalloc_noio_restore(unsigned int flags) /* Per-process atomic flags. */ #define PFA_NO_NEW_PRIVS 0 /* May not gain new privileges. */ -static inline bool task_no_new_privs(struct task_struct *p) -{ - return test_bit(PFA_NO_NEW_PRIVS, &p->atomic_flags); -} - -static inline void task_set_no_new_privs(struct task_struct *p) -{ - set_bit(PFA_NO_NEW_PRIVS, &p->atomic_flags); -} +#define TASK_PFA_TEST(name, func) \ + static inline bool task_##func(struct task_struct *p) \ + { return test_bit(PFA_##name, &p->atomic_flags); } +#define TASK_PFA_SET(name, func) \ + static inline void task_set_##func(struct task_struct *p) \ + { set_bit(PFA_##name, &p->atomic_flags); } +#define TASK_PFA_CLEAR(name, func) \ + static inline void task_clear_##func(struct task_struct *p) \ + { clear_bit(PFA_##name, &p->atomic_flags); } + +TASK_PFA_TEST(NO_NEW_PRIVS, no_new_privs) +TASK_PFA_SET(NO_NEW_PRIVS, no_new_privs) /* * task->jobctl flags |