GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-20 05:31:15 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

sched/wait: Reimplement wait_event_freezable()

Browse source 
Provide better implementations of wait_event_freezable() APIs.

The problem is with freezer_do_not_count(), it hides the thread from
the freezer, even though this thread might not actually freeze/sleep
at all.

Cc: oleg@redhat.com
Cc: Rafael Wysocki <rjw@rjwysocki.net>

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Link: http://lkml.kernel.org/n/tip-d86fz1jmso9wjxa8jfpinp8o@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Peter Zijlstra 2014-10-29 12:21:57 +01:00 • committed by Ingo Molnar
parent cb6538e740
commit 36df04bc52
2 changed files with 57 additions and 38 deletions
Download patch file Download diff file Expand all files Collapse all files

38
include/linux/freezer.h
View file

@ -265,35 +265,6 @@ static inline int freezable_schedule_hrtimeout_range(ktime_t *expires,
__retval; \
})
#define wait_event_freezable(wq, condition) \
({ \
int __retval; \
freezer_do_not_count(); \
__retval = wait_event_interruptible(wq, (condition)); \
freezer_count(); \
__retval; \
})
#define wait_event_freezable_timeout(wq, condition, timeout) \
({ \
long __retval = timeout; \
freezer_do_not_count(); \
__retval = wait_event_interruptible_timeout(wq, (condition), \
__retval); \
freezer_count(); \
__retval; \
})
#define wait_event_freezable_exclusive(wq, condition) \
({ \
int __retval; \
freezer_do_not_count(); \
__retval = wait_event_interruptible_exclusive(wq, condition); \
freezer_count(); \
__retval; \
})
#else /* !CONFIG_FREEZER */
static inline bool frozen(struct task_struct *p) { return false; }
static inline bool freezing(struct task_struct *p) { return false; }
@ -331,15 +302,6 @@ static inline void set_freezable(void) {}
#define freezable_schedule_hrtimeout_range(expires, delta, mode) \
schedule_hrtimeout_range(expires, delta, mode)
#define wait_event_freezable(wq, condition) \
wait_event_interruptible(wq, condition)
#define wait_event_freezable_timeout(wq, condition, timeout) \
wait_event_interruptible_timeout(wq, condition, timeout)
#define wait_event_freezable_exclusive(wq, condition) \
wait_event_interruptible_exclusive(wq, condition)
#define wait_event_freezekillable(wq, condition) \
wait_event_killable(wq, condition)