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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-01-09 13:06:33 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-01-29 09:19:19 +0100 |
| commit | c0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3 (patch) | |
| tree | 4c3a34ab47f07da13df0f351db4cef929f07bcf9 /kernel/trace | |
| parent | s390: reintroduce diag 44 calls for cpu_relax() (diff) | |
| download | linux-dev-c0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3.tar.xz linux-dev-c0a80c0c27e5e65b180a25e6c4c2f7ef9e386cd3.zip | |
ftrace: allow architectures to specify ftrace compile options
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>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index 67d6369ddf83..9a7e0e60a1a8 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile @@ -3,11 +3,11 @@ ifdef CONFIG_FUNCTION_TRACER ORIG_CFLAGS := $(KBUILD_CFLAGS) -KBUILD_CFLAGS = $(subst -pg,,$(ORIG_CFLAGS)) +KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS)) ifdef CONFIG_FTRACE_SELFTEST # selftest needs instrumentation -CFLAGS_trace_selftest_dynamic.o = -pg +CFLAGS_trace_selftest_dynamic.o = $(CC_FLAGS_FTRACE) obj-y += trace_selftest_dynamic.o endif endif |