Commit-ID: e8f9f4d79a677f55c8ec3acbe87b33a87e2df0de
Gitweb: http://git.kernel.org/tip/e8f9f4d79a677f55c8ec3acbe87b33a87e2df0de
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Tue, 11 Aug 2009 17:42:52 +0200
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Tue, 11 Aug 2009 20:35:29 +0200
tracing: Add ftrace event call parameter to its field descriptor handler
Add the struct ftrace_event_call as a parameter of its show_format()
callback. This way we can use it from the syscall trace events to
retrieve the syscall name from the ftrace event call parameter and
describe its fields using the syscalls metadata.
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Cc: Jiaying Zhang <jiayingz@xxxxxxxxxx>
Cc: Martin Bligh <mbligh@xxxxxxxxxx>
Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Jason Baron <jbaron@xxxxxxxxxx>
---
include/linux/ftrace_event.h | 3 ++-
include/trace/ftrace.h | 3 ++-
kernel/trace/trace_events.c | 2 +-
kernel/trace/trace_export.c | 6 ++++--
4 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 8544f12..189806b 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -116,7 +116,8 @@ struct ftrace_event_call {
void (*unregfunc)(void *);
int id;
int (*raw_init)(void);
- int (*show_format)(struct trace_seq *s);
+ int (*show_format)(struct ftrace_event_call *call,
+ struct trace_seq *s);
int (*define_fields)(void);
struct list_head fields;
int filter_active;
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 46d81b5..b250b06 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -151,7 +151,8 @@
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
static int \
-ftrace_format_##call(struct trace_seq *s) \
+ftrace_format_##call(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
{ \
struct ftrace_raw_##call field __attribute__((unused)); \
int ret = 0; \
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 1d289e2..b568ade 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -576,7 +576,7 @@ event_format_read(struct file *filp, char __user *ubuf, size_t cnt,
trace_seq_printf(s, "format:\n");
trace_write_header(s);
- r = call->show_format(s);
+ r = call->show_format(call, s);
if (!r) {
/*
* ug! The format output is bigger than a PAGE!!
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index d06cf89..956d4bc 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -60,7 +60,8 @@ extern void __bad_type_size(void);
#undef TRACE_EVENT_FORMAT
#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
static int \
-ftrace_format_##call(struct trace_seq *s) \
+ftrace_format_##call(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
{ \
struct args field; \
int ret; \
@@ -76,7 +77,8 @@ ftrace_format_##call(struct trace_seq *s) \
#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, \
tpfmt) \
static int \
-ftrace_format_##call(struct trace_seq *s) \
+ftrace_format_##call(struct ftrace_event_call *unused, \
+ struct trace_seq *s) \
{ \
struct args field; \
int ret; \
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|