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| author | Thomas Gleixner <tglx@linutronix.de> | 2007-02-28 20:12:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-01 14:53:37 -0800 |
| commit | c1e16aa2792a129d8920e22210ef21eb62a0f80a (patch) | |
| tree | bb924b7c77760d01aae19bc6caf1d24869b25e41 /kernel/sysctl.c | |
| parent | ae73fc093a8cae4d92e22ab8b635e3590e80785d (diff) | |
| download | op-kernel-dev-c1e16aa2792a129d8920e22210ef21eb62a0f80a.zip op-kernel-dev-c1e16aa2792a129d8920e22210ef21eb62a0f80a.tar.gz | |
[PATCH] Fix posix-cpu-timer breakage caused by stale p->last_ran value
Problem description at:
http://bugzilla.kernel.org/show_bug.cgi?id=8048
Commit b18ec80396834497933d77b81ec0918519f4e2a7
[PATCH] sched: improve migration accuracy
optimized the scheduler time calculations, but broke posix-cpu-timers.
The problem is that the p->last_ran value is not updated after a context
switch. So a subsequent call to current_sched_time() calculates with a
stale p->last_ran value, i.e. accounts the full time, which the task was
scheduled away.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sysctl.c')
0 files changed, 0 insertions, 0 deletions
