[tip:sched/urgent] sched: Remove debugging check

tip-bot for Ingo Molnar
2010-12-20T08:38:02Z

Commit-ID: 050c6c9b896625d9fa498265be17b82c5fc65257
Gitweb: http://git.kernel.org/tip/050c6c9b896625d9fa498265be17b82c5fc65257
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Sun, 19 Dec 2010 23:24:27 +0100
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sun, 19 Dec 2010 23:24:27 +0100

sched: Remove debugging check

Linus reported that the new warning introduced by commit f26f9aff6aaf
"Sched: fix skip_clock_update optimization" triggers. The need_resched
flag can be set by other CPUs asynchronously so this debug check is
bogus - remove it.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <AANLkTinJ8hAG1TpyC+CSYPR47p48+1=E7fiC45hMXT_1@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/sched.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 456c990..297d1a0 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4128,7 +4128,6 @@ need_resched_nonpreemptible:
rq->nr_switches++;
rq->curr = next;
++*switch_count;
- WARN_ON_ONCE(test_tsk_need_resched(next));

context_switch(rq, prev, next); /* unlocks the rq */
/*