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authorLi Zefan <lizf@cn.fujitsu.com>2009-12-08 11:14:52 +0800
committerFrederic Weisbecker <fweisbec@gmail.com>2009-12-13 18:37:25 +0100
commit3b8e4273814a7f9e9a74ece517d9206fea919aaa (patch)
treeaa7960d90fe8cd4b04537bf9ea84ac73cb3b69ad /include/trace/ftrace.h
parent614a71a26ba3d97e9fa85649db69a682b78e407d (diff)
tracing: Move a printk out of ftrace_raw_reg_event_foo()
Move the printk from each ftrace_raw_reg_event_foo() to its caller ftrace_event_enable_disable(). This avoids each regfunc trace event callbacks to handle a same error report that can be carried from the caller. See how much space this saves: text data bss dec hex filename 5345151 1961864 7103260 14410275 dbe223 vmlinux.o.old 5331487 1961864 7103260 14396611 dbacc3 vmlinux.o Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Jason Baron <jbaron@redhat.com> LKML-Reference: <4B1DC4AC.802@cn.fujitsu.com> [start cmdline record before calling regfunc to avoid lost window of pid to comm resolution] Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'include/trace/ftrace.h')
-rw-r--r--include/trace/ftrace.h16
1 files changed, 2 insertions, 14 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 2af2f7a2c1b..0c21af85211 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -555,13 +555,7 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
*
* static int ftrace_reg_event_<call>(struct ftrace_event_call *unused)
* {
- * int ret;
- *
- * ret = register_trace_<call>(ftrace_event_<call>);
- * if (!ret)
- * pr_info("event trace: Could not activate trace point "
- * "probe to <call>");
- * return ret;
+ * return register_trace_<call>(ftrace_event_<call>);
* }
*
* static void ftrace_unreg_event_<call>(struct ftrace_event_call *unused)
@@ -710,13 +704,7 @@ static void ftrace_raw_event_##call(proto) \
\
static int ftrace_raw_reg_event_##call(struct ftrace_event_call *unused)\
{ \
- int ret; \
- \
- ret = register_trace_##call(ftrace_raw_event_##call); \
- if (ret) \
- pr_info("event trace: Could not activate trace point " \
- "probe to %s\n", #call); \
- return ret; \
+ return register_trace_##call(ftrace_raw_event_##call); \
} \
\
static void ftrace_raw_unreg_event_##call(struct ftrace_event_call *unused)\