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Date: Mon, 12 Jan 2009 15:32:15 +0100 From: Johannes Weiner <hannes@...xchg.org> To: Mandeep Singh Baines <msb@...gle.com> Cc: mingo@...e.hu, linux-kernel@...r.kernel.org, rientjes@...gle.com, mbligh@...gle.com, thockin@...gle.com Subject: Re: [PATCH v2] softlockup: decouple hung tasks check from softlockup detection On Sun, Jan 11, 2009 at 10:52:13PM -0800, Mandeep Singh Baines wrote: > Decoupling allows: > > * hung tasks check to happen at very low priority > * hung tasks check and softlockup to be enabled/disabled independently > at compile and/or run-time > * individual panic settings to be enabled disabled independently > at compile and/or run-time > * softlockup threshold to be reduced without increasing hung tasks > poll frequency (hung task check is expensive relative to softlock watchdog) > * hung task check to be zero over-head when disabled at run-time > --- > include/linux/sched.h | 14 +++++-- > kernel/Makefile | 1 + > kernel/softlockup.c | 102 ------------------------------------------------- > kernel/sysctl.c | 15 +++++++- > lib/Kconfig.debug | 38 ++++++++++++++++++ > 5 files changed, 63 insertions(+), 107 deletions(-) kernel/hung_task.c missing? Hannes -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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