diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2011-08-08 16:57:47 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2012-07-19 13:17:35 -0400 |
| commit | 2f5f6ad9390c1ebbf738d130dbfe80b60eaa167e (patch) | |
| tree | 1a88c37725d3efbcde8fa0a3cf19490d793877f0 /arch/x86/kernel/entry_64.S | |
| parent | 6e0f17be0361444862637e8986c8c1a3b3f8dcf8 (diff) | |
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/kernel/entry_64.S')
| -rw-r--r-- | arch/x86/kernel/entry_64.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 7d65133b51be..2b4f94c5dc60 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -79,6 +79,7 @@ ENTRY(ftrace_caller) MCOUNT_SAVE_FRAME + leaq function_trace_op, %rdx movq 0x38(%rsp), %rdi movq 8(%rbp), %rsi subq $MCOUNT_INSN_SIZE, %rdi |