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SubjectRe: [PATCH] sysrq show-all-cpus
On Mon, 10 Mar 2008 13:32:42 -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 <>

Please update Documentation/sysrq.txt also.


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