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authorZhaolei <zhaolei@cn.fujitsu.com>2009-04-13 03:23:53 -0400
committerIngo Molnar <mingo@elte.hu>2009-04-13 17:39:57 -0400
commita3d03ecaf9fe722bf96e4ef4a2f5e42ef652ddeb (patch)
treef845537695b6164b2feb9f4c6d356174a602001d /kernel/trace
parent80a04d3f2f94fb68b5df05e3ac6697130bc3467a (diff)
tracing: Fix power tracer header
Before patch: # tracer: power # # TASK-PID CPU# TIMESTAMP FUNCTION # | | | | | [ 676.875865889] CSTATE: Going to C1 on cpu 0 for 0.005911463 [ 676.882938805] CSTATE: Going to C1 on cpu 0 for 0.104796532 ... After patch: # tracer: power # # TIMESTAMP STATE EVENT # | | | [ 676.875865889] CSTATE: Going to C1 on cpu 0 for 0.005911463 [ 676.882938805] CSTATE: Going to C1 on cpu 0 for 0.104796532 ... v2: Use seq_puts instead of seq_printf Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <49E2E889.5000903@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace_power.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/trace/trace_power.c b/kernel/trace/trace_power.c
index bae791ebcc51..118439709fb7 100644
--- a/kernel/trace/trace_power.c
+++ b/kernel/trace/trace_power.c
@@ -186,6 +186,12 @@ static enum print_line_t power_print_line(struct trace_iterator *iter)
186 return TRACE_TYPE_UNHANDLED; 186 return TRACE_TYPE_UNHANDLED;
187} 187}
188 188
189static void power_print_header(struct seq_file *s)
190{
191 seq_puts(s, "# TIMESTAMP STATE EVENT\n");
192 seq_puts(s, "# | | |\n");
193}
194
189static struct tracer power_tracer __read_mostly = 195static struct tracer power_tracer __read_mostly =
190{ 196{
191 .name = "power", 197 .name = "power",
@@ -194,6 +200,7 @@ static struct tracer power_tracer __read_mostly =
194 .stop = stop_power_trace, 200 .stop = stop_power_trace,
195 .reset = power_trace_reset, 201 .reset = power_trace_reset,
196 .print_line = power_print_line, 202 .print_line = power_print_line,
203 .print_header = power_print_header,
197}; 204};
198 205
199static int init_power_trace(void) 206static int init_power_trace(void)