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Message-Id: <1205248016.27299.110.camel@perihelion> Date: Tue, 11 Mar 2008 11:06:56 -0400 From: Jon Masters <jonathan@...masters.org> To: Rik van Riel <riel@...hat.com> Cc: Randy Dunlap <randy.dunlap@...cle.com>, akpm@...ux-foundation.org, linux-kernel@...r.kernel.org, lwoodman@...hat.com Subject: Re: [PATCH] sysrq show-all-cpus On Tue, 2008-03-11 at 10:07 -0400, Rik van Riel wrote: > On Tue, 11 Mar 2008 03:18:24 -0400 > Jon Masters <jonathan@...masters.org> wrote: > > > On Mon, 2008-03-10 at 14:03 -0400, Rik van Riel wrote: > > > SysRQ-P is not always useful on SMP systems, since it usually ends up showing the > > > backtrace of a CPU that is doing just fine, instead of the backtrace of the CPU > > > that is having problems. > > > > > > This patch adds SysRQ show-all-cpus(L), which shows the backtrace of every active > > > CPU in the system. It skips idle CPUs because some SMP systems are just too large > > > and we already know what the backtrace of the idle task looks like. > > > > > > Signed-off-by: Rik van Riel <riel@...hat.com> > > > > Why not have it just print the local CPU on non-SMP anyway? > > Sysrq p already does exactly that. That's my point. I understand why there's a new command, because it is different from 'p', but probably worth doing something on non-SMP too. Jon. -- 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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