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Date: Mon, 18 Dec 2006 16:00:19 -0800 From: Andrew Morton <akpm@...l.org> To: Dave Jones <davej@...hat.com> Cc: Ingo Molnar <mingo@...e.hu>, Adrian Bunk <bunk@...sta.de>, linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [patch] debugging feature: SysRq-Q to print timers On Mon, 18 Dec 2006 18:45:49 -0500 Dave Jones <davej@...hat.com> wrote: > On Mon, Dec 18, 2006 at 03:31:03PM -0800, Andrew Morton wrote: > > On Sat, 16 Dec 2006 08:56:58 +0100 > > Ingo Molnar <mingo@...e.hu> wrote: > > > > > -----------------> > > > Subject: [patch] debugging feature: SysRq-Q to print timers > > > From: Ingo Molnar <mingo@...e.hu> > > > > > > add SysRq-Q to print pending timers and other timer info. > > > > I must say that I've never needed this feature or /proc/timer-list, and I > > don't recall ever having seen anyone request it, nor get themselves into a > > situation where they needed it. > > /proc/timer-list is useful for profiling applications doing excessive wakeups. > With the move towards being tickless, this is more important than ever, > and giving users the right tools to find these problems themselves is important. > oic. Nobody ever tells me squat. <updates changelog> Your explanation doesn't explain why we need this info in a sysrq triggerable form. And what about /proc/timer-stat? - 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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