Arve Hjønnevåg reported numerous crashes from the "BUG_ON(timer->state != HRTIMER_STATE_CALLBACK)" check in __run_hrtimer after it called alarmtimer_fired.
Looking at the code, I realized much of the logic duplicated the hrtimer code, and that by multiplexing numerous alarmtimers onto a single hrtimer didn't really gain us anything over just using an hrtimer per alarmtimer. Especially given the various ways hrtimer actions can fail. So this patchset tries to simplify some of the alarmtimer code by utilizing the hrtimer logic in a more direct manner. Followed then by a few cleanup patches. I've done some brief testing with some simpler test cases, but I'd appreciate any additional testing or review. I'm hoping to resubmit this so it can go in for 3.7. thanks -john Cc: Arve Hjønnevåg <a...@google.com> Cc: Colin Cross <ccr...@google.com> Cc: Thomas Gleixner <t...@linutronix.de> John Stultz (3): alarmtimer: Use hrtimer per-alarm instead of per-base alarmtimer: Remove unused helpers & defines alarmtimer: Rename alarmtimer_remove to alarmtimer_dequeue include/linux/alarmtimer.h | 31 +------------- kernel/time/alarmtimer.c | 99 +++++++++++++------------------------------- 2 files changed, 31 insertions(+), 99 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
