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| author |   Oleg Nesterov <oleg@redhat.com> | 2014-10-07 21:51:08 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2014-10-28 10:47:53 +0100 |
| commit | 8f9fbf092cd0ae31722b42c9abb427a87d55c18a (patch) | |
| tree | 9ad6603648872c8eb69e9b8d52fae98a73b65b59 /include/asm-generic | |
| parent | sched/numa: Check all nodes when placing a pseudo-interleaved group (diff) | |
| download | linux-dev-8f9fbf092cd0ae31722b42c9abb427a87d55c18a.tar.xz linux-dev-8f9fbf092cd0ae31722b42c9abb427a87d55c18a.zip | |
sched: Fix the PREEMPT_ACTIVE check in __trace_sched_switch_state()
task_preempt_count() has nothing to do with the actual preempt counter,
thread_info->saved_preempt_count is only valid right after switch_to().
__trace_sched_switch_state() can use preempt_count(), prev is still the
current task when trace_sched_switch() is called.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
[ Added BUG_ON(). ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20141007195108.GB28002@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/asm-generic')
0 files changed, 0 insertions, 0 deletions