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| author |   Li Zefan <lizf@cn.fujitsu.com> | 2009-04-22 16:53:34 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-04-22 11:36:38 +0200 |
| commit | 7a4f453b6d7379a7c380825949977c5a838aa012 (patch) | |
| tree | 9f5450c7a1abc865b998885affe964d4670a08bc /include/trace | |
| parent | ring-buffer: only warn on wrap if buffer is bigger than two pages (diff) | |
| download | linux-dev-7a4f453b6d7379a7c380825949977c5a838aa012.tar.xz linux-dev-7a4f453b6d7379a7c380825949977c5a838aa012.zip | |
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/trace')
| -rw-r--r-- | include/trace/ftrace.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 39a3351f2e7f..15ef08d9add1 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -198,7 +198,7 @@ ftrace_define_fields_##call(void) \ struct ftrace_event_call *event_call = &event_##call; \ int ret; \ \ - __common_field(unsigned char, type); \ + __common_field(int, type); \ __common_field(unsigned char, flags); \ __common_field(unsigned char, preempt_count); \ __common_field(int, pid); \ |