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ftrace: allow architectures to specify ftrace compile options

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If the kernel is compiled with function tracer support the -pg compile option
is passed to gcc to generate extra code into the prologue of each function.

This patch replaces the "open-coded" -pg compile flag with a CC_FLAGS_FTRACE
makefile variable which architectures can override if a different option
should be used for code generation.

Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2015-01-09 13:06:33 +01:00
committed by Martin Schwidefsky
parent 4d92f50249
commit c0a80c0c27
8 changed files with 19 additions and 14 deletions
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2
kernel/sched/Makefile
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@@ -1,5 +1,5 @@
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_clock.o = -pg
CFLAGS_REMOVE_clock.o = $(CC_FLAGS_FTRACE)
endif
ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)