ftrace: use raw_smp_processor_id for mcount functions

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Due to debug hooks in the kernel that can change the way smp_processor_id
works, use raw_smp_processor_id in mcount called functions (namely
ftrace_record_ip). Currently we annotate most debug functions from calling
mcount, but we should not rely on that to prevent kernel lockups.

This patch uses the raw_smp_processor_id to prevent a recusive crash
that can happen if a debug hook in smp_processor_id calls mcount.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Steven Rostedt 2008-05-12 21:21:02 +02:00 • committed by Thomas Gleixner

parent a4feb8348b

commit 2bb6f8d638

1 changed files with 11 additions and 4 deletions

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kernel/trace/ftrace.c

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