Commit-ID: 557055bebe9212dfa6b9f5df811dfd0dac77ec55
Gitweb: http://git.kernel.org/tip/557055bebe9212dfa6b9f5df811dfd0dac77ec55
Author: Zhaolei <zhaolei@xxxxxxxxxxxxxx>
AuthorDate: Mon, 13 Apr 2009 16:02:34 +0800
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Tue, 14 Apr 2009 02:30:36 +0200
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@xxxxxxxxxxxxxx>
Acked-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Tom Zanussi <tzanussi@xxxxxxxxx>
LKML-Reference: <49E2F19A.3040006@xxxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
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 ad8c22e..8333715 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)
--
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