[PATCH 2/3] sched: add a macro to define bitops for task atomic flags

[Zefan Li]

This will simplify code when we add new flags.

Signed-off-by: Zefan Li <lizefan@xxxxxxxxxx>
---
 include/linux/sched.h | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4557765..04a2ae2 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1959,15 +1959,17 @@ 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_BITOPS(name, func)				\
+static inline bool task_##func(struct task_struct *p)		\
+{ return test_bit(PFA_##name, &p->atomic_flags); }		\
+								\
+static inline void task_set_##func(struct task_struct *p)	\
+{ set_bit(PFA_##name, &p->atomic_flags); }			\
+								\
+static inline void task_clear_##func(struct task_struct *p)	\
+{ clear_bit(PFA_##name, &p->atomic_flags); }
+
+TASK_PFA_BITOPS(NO_NEW_PRIVS, no_new_privs)
 
 /*
  * task->jobctl flags
-- 
1.8.0.2


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