Messages in this thread Patch in this message | | | Date | Fri, 22 Sep 2006 19:13:42 -0400 | From | Dave Jones <> | Subject | Re: [BUG] warning at kernel/cpu.c:38/lock_cpu_hotplug() |
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On Sat, Sep 23, 2006 at 01:45:16AM +0300, S.Çağlar Onur wrote: > Hi; > > With kernel-2.6.18, "modprobe cpufreq_stats" always (i can reproduce) gaves > following; > > ... > Lukewarm IQ detected in hotplug locking > BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug() > [<b0134a42>] lock_cpu_hotplug+0x42/0x65 > [<b02f8af1>] cpufreq_update_policy+0x25/0xad > [<b0358756>] kprobe_flush_task+0x18/0x40 > [<b0355aab>] schedule+0x63f/0x68b > [<b01377c2>] __link_module+0x0/0x1f > [<b0119e7d>] __cond_resched+0x16/0x34 > [<b03560bf>] cond_resched+0x26/0x31 > [<b0355b0e>] wait_for_completion+0x17/0xb1 > [<f965c547>] cpufreq_stat_cpu_callback+0x13/0x20 [cpufreq_stats] > [<f9670074>] cpufreq_stats_init+0x74/0x8b [cpufreq_stats] > [<b0137872>] sys_init_module+0x91/0x174 > [<b0102c81>] sysenter_past_esp+0x56/0x79
This should do the trick. I'll merge the same patch into cpufreq.git
Dave
--- linux-2.6.18.noarch/drivers/cpufreq/cpufreq_stats.c~ 2006-09-22 19:12:57.000000000 -0400 +++ linux-2.6.18.noarch/drivers/cpufreq/cpufreq_stats.c 2006-09-22 19:13:03.000000000 -0400 @@ -350,12 +350,10 @@ __init cpufreq_stats_init(void) } register_hotcpu_notifier(&cpufreq_stat_cpu_notifier); - lock_cpu_hotplug(); for_each_online_cpu(cpu) { cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier, CPU_ONLINE, (void *)(long)cpu); } - unlock_cpu_hotplug(); return 0; } static void -- http://www.codemonkey.org.uk - 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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