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authorLi Zefan <lizf@cn.fujitsu.com>2009-08-19 15:54:51 +0800
committerIngo Molnar <mingo@elte.hu>2009-08-19 15:02:24 +0200
commit540b7b8d65575c80162f2a0f38e1d313c92a6042 (patch)
tree664bdd01ce8fce990e634a304f9b3ab51e50970c /kernel/trace/trace_events.c
parente647d6b314266adb904d4b84973eda0afa856946 (diff)
tracing/syscalls: Add filtering support
Add filtering support for syscall events: # echo 'mode == 0666' > events/syscalls/sys_enter_open # echo 'ret == 0' > events/syscalls/sys_exit_open # echo 1 > events/syscalls/sys_enter_open # echo 1 > events/syscalls/sys_exit_open # cat trace ... modprobe-3084 [001] 117.463140: sys_open(filename: 917d3e8, flags: 0, mode: 1b6) modprobe-3084 [001] 117.463176: sys_open -> 0x0 less-3086 [001] 117.510455: sys_open(filename: 9c6bdb8, flags: 8000, mode: 1b6) sendmail-2574 [001] 122.145840: sys_open(filename: b807a365, flags: 0, mode: 1b6) ... Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <4A8BAFCB.1040006@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace_events.c')
-rw-r--r--kernel/trace/trace_events.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 9c7ecfb3416f..79d352027a61 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -27,8 +27,8 @@ DEFINE_MUTEX(event_mutex);
LIST_HEAD(ftrace_events);
-int trace_define_field(struct ftrace_event_call *call, char *type,
- char *name, int offset, int size, int is_signed)
+int trace_define_field(struct ftrace_event_call *call, const char *type,
+ const char *name, int offset, int size, int is_signed)
{
struct ftrace_event_field *field;
@@ -83,6 +83,7 @@ int trace_define_common_fields(struct ftrace_event_call *call)
return ret;
}
+EXPORT_SYMBOL_GPL(trace_define_common_fields);
#ifdef CONFIG_MODULES

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