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authorRik van Riel <riel@redhat.com>2008-04-29 00:59:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-29 08:06:03 -0700
commit5045bcae0fb466a1dbb6af0036e56901fd7aafb7 (patch)
tree3ad84c429ff74ec0f541cc7cf05ab3788114022f /COPYING
parent6e574195b75543bc6a6240306313988b1952470c (diff)
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sysrq: add show-backtrace-on-all-cpus function
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. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Rik van Riel <riel@redhat.com> Randy Dunlap <randy.dunlap@oracle.com> Cc: <lwoodman@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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