Messages in this thread Patch in this message | | | Date | Sat, 23 Sep 2006 12:32:17 -0700 | From | dwalker@mvista ... | Subject | [PATCH -hrt] fix soft lockup detected |
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Got this in 2.6.18-dyntick1
BUG: soft lockup detected on CPU#0! [<c002a1e0>] (dump_stack+0x0/0x14) from [<c0065630>] (softlockup_tick+0xa0/0xfc) [<c0065590>] (softlockup_tick+0x0/0xfc) from [<c004bba8>] (run_local_timers+0x44/0x54) r7 = 20000013 r6 = 00000E92 r5 = 00000000 r4 = C023ABD8 [<c004bb64>] (run_local_timers+0x0/0x54) from [<c004c108>] (update_process_times+0x34/0x70) [<c004c0d4>] (update_process_times+0x0/0x70) from [<c005c124>] (hrtimer_restart_sched_tick+0x7c/0x104) r5 = 043E6345 r4 = C0232000 [<c005c0a8>] (hrtimer_restart_sched_tick+0x0/0x104) from [<c0027194>] (cpu_idle+0x2c/0x98) [<c0027168>] (cpu_idle+0x0/0x98) from [<c0025310>] (rest_init+0x48/0x50) r6 = C023B884 r5 = C028347C r4 = C0232000 [<c00252c8>] (rest_init+0x0/0x50) from [<c00088b0>] (start_kernel+0x1dc/0x284) r4 = C02964A4 [<c00086d4>] (start_kernel+0x0/0x284) from [<10008030>] (0x10008030)
Signed-Off-By: Daniel Walker <dwalker@mvista.com>
--- kernel/hrtimer.c | 7 +++++++ 1 files changed, 7 insertions(+)
Index: linux-omap-2.6/kernel/hrtimer.c =================================================================== --- linux-omap-2.6.orig/kernel/hrtimer.c +++ linux-omap-2.6/kernel/hrtimer.c @@ -571,6 +571,13 @@ void hrtimer_restart_sched_tick(void) update_jiffies64(now); /* + * Since we just woke up, and updated jiffies + * the softlockup timer will be stale. So update + * it now. + */ + touch_softlockup_watchdog(); + + /* * Update process times would randomly account the time we slept to * whatever the context of the next sched tick is. Enforce that this * is accounted to idle ! -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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