AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-25 08:50:53 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

sched: Remove rq argument from ttwu_stat()

Browse Source 
In order to call ttwu_stat() without holding rq->lock we must remove
its rq argument. Since we need to change rq stats, account to the
local rq instead of the task rq, this is safe since we have IRQs
disabled.

Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110405152729.394638826@chello.nl
This commit is contained in:
Peter Zijlstra 2011-04-05 17:23:55 +02:00 committed by Ingo Molnar
parent e4a52bcb9a
commit b84cb5df1f
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
kernel/sched.c
View File

@ -2410,9 +2410,11 @@ static void update_avg(u64 *avg, u64 sample)
#endif
static void
ttwu_stat(struct rq *rq, struct task_struct *p, int cpu, int wake_flags)
ttwu_stat(struct task_struct *p, int cpu, int wake_flags)
{
#ifdef CONFIG_SCHEDSTATS
struct rq *rq = this_rq();
#ifdef CONFIG_SMP
int this_cpu = smp_processor_id();
@ -2561,9 +2563,10 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags)
ttwu_activate(rq, p, ENQUEUE_WAKEUP | ENQUEUE_WAKING);
out_running:
ttwu_post_activation(p, rq, wake_flags);
ttwu_stat(rq, p, cpu, wake_flags);
success = 1;
__task_rq_unlock(rq);
ttwu_stat(p, cpu, wake_flags);
out:
raw_spin_unlock_irqrestore(&p->pi_lock, flags);
put_cpu();
@ -2600,7 +2603,7 @@ static void try_to_wake_up_local(struct task_struct *p)
ttwu_activate(rq, p, ENQUEUE_WAKEUP);
ttwu_post_activation(p, rq, 0);
ttwu_stat(rq, p, smp_processor_id(), 0);
ttwu_stat(p, smp_processor_id(), 0);
out:
raw_spin_unlock(&p->pi_lock);
}