x86: Save stack pointer in perf live regs savings

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In order to prepare for fetching the stack pointer from the
regs when possible in dump_trace() instead of taking the
local one, save the current stack pointer in perf live regs saving.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>

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Frederic Weisbecker 2011-07-02 15:00:52 +02:00

parent af07ce3e77

commit 9e46294dad

1 changed files with 5 additions and 0 deletions

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arch/x86/include/asm/perf_event.h

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