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| author | Zhaolei <zhaolei@cn.fujitsu.com> | 2009-04-13 16:02:34 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-14 02:30:36 +0200 |
| commit | 557055bebe9212dfa6b9f5df811dfd0dac77ec55 (patch) | |
| tree | bd396effa5011a2fc687a3cd887f8235a1d1977e /kernel | |
| parent | a3d03ecaf9fe722bf96e4ef4a2f5e42ef652ddeb (diff) | |
| download | lwn-557055bebe9212dfa6b9f5df811dfd0dac77ec55.tar.gz lwn-557055bebe9212dfa6b9f5df811dfd0dac77ec55.zip | |
tracing: Fix branch tracer header
Before patch:
# tracer: branch
#
# TASK-PID CPU# TIMESTAMP FUNCTION
# | | | | |
<...>-2981 [000] 24008.872738: [ ok ] trace_irq_handler_exit:irq_event_types.h:41
<...>-2981 [000] 24008.872742: [ ok ] note_interrupt:spurious.c:229
...
After patch:
# tracer: branch
#
# TASK-PID CPU# TIMESTAMP CORRECT FUNC:FILE:LINE
# | | | | | |
<...>-2985 [000] 26329.142970: [ ok ] slab_free:slub.c:1776
<...>-2985 [000] 26329.142972: [ ok ] trace_kmem_cache_free:kmem_event_types.h:191
...
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <49E2F19A.3040006@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_branch.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c index ad8c22efff41..8333715e4066 100644 --- a/kernel/trace/trace_branch.c +++ b/kernel/trace/trace_branch.c @@ -155,6 +155,13 @@ static enum print_line_t trace_branch_print(struct trace_iterator *iter, return TRACE_TYPE_HANDLED; } +static void branch_print_header(struct seq_file *s) +{ + seq_puts(s, "# TASK-PID CPU# TIMESTAMP CORRECT" + " FUNC:FILE:LINE\n"); + seq_puts(s, "# | | | | | " + " |\n"); +} static struct trace_event trace_branch_event = { .type = TRACE_BRANCH, @@ -169,6 +176,7 @@ static struct tracer branch_trace __read_mostly = #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_branch, #endif /* CONFIG_FTRACE_SELFTEST */ + .print_header = branch_print_header, }; __init static int init_branch_tracer(void) |