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tracing: Pull up calls to trace_define_common_fields()

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Call trace_define_common_fields() in event_create_dir() only.
This avoids trace events to handle it from their define_fields
callbacks and shrinks the kernel code size:

   text    data     bss     dec     hex filename
5346802 1961864 7103260 14411926         dbe896 vmlinux.o.old
5345151 1961864 7103260 14410275         dbe223 vmlinux.o

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
LKML-Reference: <4B1DC49C.8000107@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Li Zefan 2009-12-08 11:14:36 +08:00 committed by Frederic Weisbecker
parent 87d9b4e1c5
commit 614a71a26b
6 changed files with 4 additions and 28 deletions
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1
include/linux/ftrace_event.h
View File

@ -159,7 +159,6 @@ enum {
};
extern int trace_event_raw_init(struct ftrace_event_call *call);
extern int trace_define_common_fields(struct ftrace_event_call *call);
extern int trace_define_field(struct ftrace_event_call *call, const char *type,
const char *name, int offset, int size,
int is_signed, int filter_type);

4
include/trace/ftrace.h
View File

@ -436,10 +436,6 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
struct ftrace_raw_##call field; \
int ret; \
\
ret = trace_define_common_fields(event_call); \
if (ret) \
return ret; \
\
tstruct; \
\
return ret; \

7
kernel/trace/trace_events.c
View File

@ -78,7 +78,7 @@ EXPORT_SYMBOL_GPL(trace_define_field);
if (ret) \
return ret;
int trace_define_common_fields(struct ftrace_event_call *call)
static int trace_define_common_fields(struct ftrace_event_call *call)
{
int ret;
struct trace_entry ent;
@ -91,7 +91,6 @@ int trace_define_common_fields(struct ftrace_event_call *call)
return ret;
}
EXPORT_SYMBOL_GPL(trace_define_common_fields);
void trace_destroy_fields(struct ftrace_event_call *call)
{
@ -927,7 +926,9 @@ event_create_dir(struct ftrace_event_call *call, struct dentry *d_events,
id);
if (call->define_fields) {
ret = call->define_fields(call);
ret = trace_define_common_fields(call);
if (!ret)
ret = call->define_fields(call);
if (ret < 0) {
pr_warning("Could not initialize trace point"
" events/%s\n", call->name);

4
kernel/trace/trace_export.c
View File

@ -184,10 +184,6 @@ ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
struct struct_name field; \
int ret; \
\
ret = trace_define_common_fields(event_call); \
if (ret) \
return ret; \
\
tstruct; \
\
return ret; \

8
kernel/trace/trace_kprobe.c
View File

@ -1113,10 +1113,6 @@ static int kprobe_event_define_fields(struct ftrace_event_call *event_call)
struct kprobe_trace_entry field;
struct trace_probe *tp = (struct trace_probe *)event_call->data;
ret = trace_define_common_fields(event_call);
if (!ret)
return ret;
DEFINE_FIELD(unsigned long, ip, FIELD_STRING_IP, 0);
DEFINE_FIELD(int, nargs, FIELD_STRING_NARGS, 1);
/* Set argument names as fields */
@ -1131,10 +1127,6 @@ static int kretprobe_event_define_fields(struct ftrace_event_call *event_call)
struct kretprobe_trace_entry field;
struct trace_probe *tp = (struct trace_probe *)event_call->data;
ret = trace_define_common_fields(event_call);
if (!ret)
return ret;
DEFINE_FIELD(unsigned long, func, FIELD_STRING_FUNC, 0);
DEFINE_FIELD(unsigned long, ret_ip, FIELD_STRING_RETIP, 0);
DEFINE_FIELD(int, nargs, FIELD_STRING_NARGS, 1);

8
kernel/trace/trace_syscalls.c
View File

@ -217,10 +217,6 @@ int syscall_enter_define_fields(struct ftrace_event_call *call)
int i;
int offset = offsetof(typeof(trace), args);
ret = trace_define_common_fields(call);
if (ret)
return ret;
ret = trace_define_field(call, SYSCALL_FIELD(int, nr), FILTER_OTHER);
if (ret)
return ret;
@ -241,10 +237,6 @@ int syscall_exit_define_fields(struct ftrace_event_call *call)
struct syscall_trace_exit trace;
int ret;
ret = trace_define_common_fields(call);
if (ret)
return ret;
ret = trace_define_field(call, SYSCALL_FIELD(int, nr), FILTER_OTHER);
if (ret)
return ret;