Commit:     c1e16aa2792a129d8920e22210ef21eb62a0f80a
Parent:     ae73fc093a8cae4d92e22ab8b635e3590e80785d
Author:     Thomas Gleixner <[EMAIL PROTECTED]>
AuthorDate: Wed Feb 28 20:12:19 2007 -0800
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Mar 1 14:53:37 2007 -0800

    [PATCH] Fix posix-cpu-timer breakage caused by stale p->last_ran value
    Problem description at:
    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 <[EMAIL PROTECTED]>
    Acked-by: Ingo Molnar <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
 kernel/sched.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 0dc7572..0c5ebf5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -3566,7 +3566,7 @@ switch_tasks:
        sched_info_switch(prev, next);
        if (likely(prev != next)) {
-               next->timestamp = now;
+               next->timestamp = next->last_ran = now;
                rq->curr = next;
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