diff options
| author | Steven Rostedt (VMware) | 2017-03-23 15:33:53 +0100 |
|---|---|---|
| committer | Thomas Gleixner | 2017-03-24 10:14:08 +0100 |
| commit | 1fa9d67a2f07893fc7e4a880867a6cbb81dda547 (patch) | |
| tree | b91313082fbb3b6956e8d704a62f14af1b99868e /arch/x86/kernel/ftrace_64.S | |
| parent | x86/ftrace: Add -mfentry support to x86_32 with DYNAMIC_FTRACE set (diff) | |
| download | kernel-qcow2-linux-1fa9d67a2f07893fc7e4a880867a6cbb81dda547.tar.gz kernel-qcow2-linux-1fa9d67a2f07893fc7e4a880867a6cbb81dda547.tar.xz kernel-qcow2-linux-1fa9d67a2f07893fc7e4a880867a6cbb81dda547.zip | |
x86/ftrace: Use Makefile logic instead of #ifdef for compiling ftrace_*.o
Currently ftrace_32.S and ftrace_64.S are compiled even when
CONFIG_FUNCTION_TRACER is not set. This means there's an unnecessary #ifdef
to protect the code. Instead of using preprocessor directives, only compile
those files when FUNCTION_TRACER is defined.
Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20170316210043.peycxdxktwwn6cid@treble
Link: http://lkml.kernel.org/r/20170323143446.217684991@goodmis.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/ftrace_64.S')
| -rw-r--r-- | arch/x86/kernel/ftrace_64.S | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kernel/ftrace_64.S b/arch/x86/kernel/ftrace_64.S index d1be3cbe2cd4..1dfac634bbf7 100644 --- a/arch/x86/kernel/ftrace_64.S +++ b/arch/x86/kernel/ftrace_64.S @@ -11,9 +11,6 @@ .code64 .section .entry.text, "ax" - -#ifdef CONFIG_FUNCTION_TRACER - #ifdef CC_USING_FENTRY # define function_hook __fentry__ EXPORT_SYMBOL(__fentry__) @@ -295,7 +292,6 @@ trace: jmp fgraph_trace END(function_hook) #endif /* CONFIG_DYNAMIC_FTRACE */ -#endif /* CONFIG_FUNCTION_TRACER */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER ENTRY(ftrace_graph_caller) |