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authorSteven Rostedt <srostedt@redhat.com>2011-08-09 00:57:47 +0400
committerSteven Rostedt <rostedt@goodmis.org>2012-07-19 21:17:35 +0400
commit2f5f6ad9390c1ebbf738d130dbfe80b60eaa167e (patch)
tree1a88c37725d3efbcde8fa0a3cf19490d793877f0 /arch/x86/include/asm/ftrace.h
parent6e0f17be0361444862637e8986c8c1a3b3f8dcf8 (diff)
downloadlinux-2f5f6ad9390c1ebbf738d130dbfe80b60eaa167e.tar.xz
ftrace: Pass ftrace_ops as third parameter to function trace callback
Currently the function trace callback receives only the ip and parent_ip of the function that it traced. It would be more powerful to also return the ops that registered the function as well. This allows the same function to act differently depending on what ftrace_ops registered it. Link: http://lkml.kernel.org/r/20120612225424.267254552@goodmis.org Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'arch/x86/include/asm/ftrace.h')
-rw-r--r--arch/x86/include/asm/ftrace.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
index b0767bc08740..783b107eacbc 100644
--- a/arch/x86/include/asm/ftrace.h
+++ b/arch/x86/include/asm/ftrace.h
@@ -32,6 +32,10 @@
#define MCOUNT_ADDR ((long)(mcount))
#define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */
+#if defined(CONFIG_DYNAMIC_FTRACE) && defined(CONFIG_X86_64)
+#define ARCH_SUPPORTS_FTRACE_OPS 1
+#endif
+
#ifndef __ASSEMBLY__
extern void mcount(void);
extern atomic_t modifying_ftrace_code;