arm64: ftrace: Add CALLER_ADDRx macros

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CALLER_ADDRx returns caller's address at specified level in call stacks.
They are used for several tracers like irqsoff and preemptoff.
Strange to say, however, they are refered even without FTRACE.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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AKASHI Takahiro 2014-04-30 10:54:35 +01:00 • committed by Will Deacon

parent bd7d38dbdf

commit 3711784ece

3 changed files with 61 additions and 2 deletions

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5

arch/arm64/include/asm/ftrace.h

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3

arch/arm64/kernel/Makefile

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55

arch/arm64/kernel/return_address.c

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