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authorLi Zefan <lizf@cn.fujitsu.com>2009-04-22 12:53:34 +0400
committerIngo Molnar <mingo@elte.hu>2009-04-22 13:36:38 +0400
commit7a4f453b6d7379a7c380825949977c5a838aa012 (patch)
tree9f5450c7a1abc865b998885affe964d4670a08bc /include/linux/ftrace_event.h
parent3554228d4289098a8fe5cfd87512ec32a19bbe5a (diff)
downloadlinux-7a4f453b6d7379a7c380825949977c5a838aa012.tar.xz
tracing/events: make struct trace_entry->type to be int type
struct trace_entry->type is unsigned char, while trace event's id is int type, thus for a event with id >= 256, it's entry->type is cast to (id % 256), and then we can't see the trace output of this event. # insmod trace-events-sample.ko # echo foo_bar > /mnt/tracing/set_event # cat /debug/tracing/events/trace-events-sample/foo_bar/id 256 # cat /mnt/tracing/trace_pipe <...>-3548 [001] 215.091142: Unknown type 0 <...>-3548 [001] 216.089207: Unknown type 0 <...>-3548 [001] 217.087271: Unknown type 0 <...>-3548 [001] 218.085332: Unknown type 0 [ Impact: fix output for trace events with id >= 256 ] Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <49EEDB0E.5070207@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/ftrace_event.h')
-rw-r--r--include/linux/ftrace_event.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 75f3ac01a87c..2a4a40749911 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -16,7 +16,7 @@ struct dentry;
* bash-15816 [01] 235.197585: idle_cpu <- irq_enter
*/
struct trace_entry {
- unsigned char type;
+ int type;
unsigned char flags;
unsigned char preempt_count;
int pid;
@@ -73,7 +73,7 @@ enum print_line_t {
struct ring_buffer_event *
-trace_current_buffer_lock_reserve(unsigned char type, unsigned long len,
+trace_current_buffer_lock_reserve(int type, unsigned long len,
unsigned long flags, int pc);
void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,
unsigned long flags, int pc);