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| 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 /kernel/trace/trace_irqsoff.c | |
| parent | 6e0f17be0361444862637e8986c8c1a3b3f8dcf8 (diff) | |
| download | lwn-2f5f6ad9390c1ebbf738d130dbfe80b60eaa167e.tar.gz lwn-2f5f6ad9390c1ebbf738d130dbfe80b60eaa167e.zip | |
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 'kernel/trace/trace_irqsoff.c')
| -rw-r--r-- | kernel/trace/trace_irqsoff.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index 99d20e920368..2862c77f95d9 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -136,7 +136,8 @@ static int func_prolog_dec(struct trace_array *tr, * irqsoff uses its own tracer function to keep the overhead down: */ static void -irqsoff_tracer_call(unsigned long ip, unsigned long parent_ip) +irqsoff_tracer_call(unsigned long ip, unsigned long parent_ip, + struct ftrace_ops *op) { struct trace_array *tr = irqsoff_trace; struct trace_array_cpu *data; |