From: Bodo Stroesser Date: Sat, 26 Apr 2008 21:10:16 +0000 (-0700) Subject: hrtimer: timeout too long when using HRTIMER_CB_SOFTIRQ X-Git-Tag: v2.6.26-rc1~717^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7b41a24bfb5d7fa02f7b49be1293d468814e424;p=pandora-kernel.git hrtimer: timeout too long when using HRTIMER_CB_SOFTIRQ When using hrtimer with timer->cb_mode == HRTIMER_CB_SOFTIRQ in some cases the clockevent is not programmed. This happens, if: - a timer is rearmed while it's state is HRTIMER_STATE_CALLBACK - hrtimer_reprogram() returns -ETIME, when it is called after CALLBACK is finished. This occurs if the new timer->expires is in the past when CALLBACK is done. In this case, the timer needs to be removed from the tree and put onto the pending list again. The patch is against 2.6.22.5, but AFAICS, it is relevant for 2.6.25 also (in run_hrtimer_pending()). Signed-off-by: Bodo Stroesser Cc: stable@kernel.org Signed-off-by: Thomas Gleixner --- Reading git-diff-tree failed