Uwe Kleine-Koenig
c79a61f557
tracing: make CALLER_ADDRx overwriteable
...
The current definition of CALLER_ADDRx isn't suitable for all platforms.
E.g. for ARM __builtin_return_address(N) doesn't work for N > 0 and
AFAIK for powerpc there are no frame pointers needed to have a working
__builtin_return_address. This patch allows defining the CALLER_ADDRx
macros in <asm/ftrace.h> and let these take precedence.
Because now <asm/ftrace.h> is included unconditionally in
<linux/ftrace.h> all archs that don't already had this include get an
empty one for free.
Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Ingo Molnar <mingo@elte.hu >
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com >
Signed-off-by: Steven Rostedt <srostedt@redhat.com >
2009-03-02 16:49:37 -05:00
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