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authorJason Low <jason.low2@hp.com>2015-10-14 12:07:55 -0700
committerThomas Gleixner <tglx@linutronix.de>2015-10-15 11:23:41 +0200
commitd5c373eb5610686162ff50429f63f4c00c554799 (patch)
tree1016ff693cfd585fdab1d368995f16036c9ec65c /kernel/time
parent934715a191e4be0c602d39455a7a74316f274d60 (diff)
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posix_cpu_timer: Convert cputimer->running to bool
In the next patch in this series, a new field 'checking_timer' will be added to 'struct thread_group_cputimer'. Both this and the existing 'running' integer field are just used as boolean values. To save space in the structure, we can make both of these fields booleans. This is a preparatory patch to convert the existing running integer field to a boolean. Suggested-by: George Spelvin <linux@horizon.com> Signed-off-by: Jason Low <jason.low2@hp.com> Reviewed: George Spelvin <linux@horizon.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: hideaki.kimura@hpe.com Cc: terry.rudd@hpe.com Cc: scott.norton@hpe.com Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1444849677-29330-4-git-send-email-jason.low2@hp.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/posix-cpu-timers.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index 6f6e252ec761..2d58153074d9 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -249,7 +249,7 @@ void thread_group_cputimer(struct task_struct *tsk, struct task_cputime *times)
* but barriers are not required because update_gt_cputime()
* can handle concurrent updates.
*/
- WRITE_ONCE(cputimer->running, 1);
+ WRITE_ONCE(cputimer->running, true);
}
sample_cputime_atomic(times, &cputimer->cputime_atomic);
}
@@ -918,7 +918,7 @@ static inline void stop_process_timers(struct signal_struct *sig)
struct thread_group_cputimer *cputimer = &sig->cputimer;
/* Turn off cputimer->running. This is done without locking. */
- WRITE_ONCE(cputimer->running, 0);
+ WRITE_ONCE(cputimer->running, false);
}
static u32 onecputick;