ftrace: use code patching for ftrace graph tracer

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Impact: more efficient code for ftrace graph tracer

This patch uses the dynamic patching, when available, to patch
the function graph code into the kernel.

This patch will ease the way for letting both function tracing
and function graph tracing run together.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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This commit is contained in:

Steven Rostedt 2008-11-26 00:16:24 -05:00 • committed by Ingo Molnar

parent df4fc31558

commit 5a45cfe1c6

4 changed files with 72 additions and 21 deletions

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5

arch/x86/kernel/entry_32.S

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48

arch/x86/kernel/ftrace.c

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5

include/linux/ftrace.h

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35

kernel/trace/ftrace.c

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