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authorJiri Olsa <jolsa@redhat.com>2011-06-03 16:58:47 +0200
committerSteven Rostedt <rostedt@goodmis.org>2011-06-14 22:48:47 -0400
commit321e68b095addc473ca52ced9acfa59be88f76e6 (patch)
tree43fed76c347373b651692b275f4152dcaf72eb21 /kernel/trace/trace_sched_wakeup.c
parent84c15027a7f2fbd7f1180d7cbb60e41abbbaedd2 (diff)
downloadop-kernel-dev-321e68b095addc473ca52ced9acfa59be88f76e6.zip
op-kernel-dev-321e68b095addc473ca52ced9acfa59be88f76e6.tar.gz
tracing, function_graph: Remove dependency of abstime and duration fields on latency
The display of absolute time and duration fields is based on the latency field. This was added during the irqsoff/wakeup tracers graph support changes. It's causing confusion in what fields will be displayed for the function_graph tracer itself. So I'm removing this depency, and adding absolute time and duration fields to the preemptirqsoff preemptoff irqsoff wakeup tracers. With following commands: # echo function_graph > ./current_tracer # cat trace This is what it looked like before: # tracer: function_graph # # TIME CPU DURATION FUNCTION CALLS # | | | | | | | | 0) 0.068 us | } /* page_add_file_rmap */ 0) | _raw_spin_unlock() { ... This is what it looks like now: # tracer: function_graph # # CPU DURATION FUNCTION CALLS # | | | | | | | 0) 0.068 us | } /* add_preempt_count */ 0) 0.993 us | } /* vfsmount_lock_local_lock */ ... For preemptirqsoff preemptoff irqsoff wakeup tracers, this is what it looked like before: SNIP # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / _-=> lock-depth # |||| / # CPU TASK/PID ||||| DURATION FUNCTION CALLS # | | | ||||| | | | | | | 1) <idle>-0 | d..1 0.000 us | acpi_idle_enter_simple(); ... This is what it looks like now: SNIP # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / # TIME CPU TASK/PID |||| DURATION FUNCTION CALLS # | | | | |||| | | | | | | 19.847735 | 1) <idle>-0 | d..1 0.000 us | acpi_idle_enter_simple(); ... Signed-off-by: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1307113131-10045-2-git-send-email-jolsa@redhat.com Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_sched_wakeup.c')
-rw-r--r--kernel/trace/trace_sched_wakeup.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index f029dd4..e4a70c0 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -227,7 +227,9 @@ static void wakeup_trace_close(struct trace_iterator *iter)
graph_trace_close(iter);
}
-#define GRAPH_TRACER_FLAGS (TRACE_GRAPH_PRINT_PROC)
+#define GRAPH_TRACER_FLAGS (TRACE_GRAPH_PRINT_PROC | \
+ TRACE_GRAPH_PRINT_ABS_TIME | \
+ TRACE_GRAPH_PRINT_DURATION)
static enum print_line_t wakeup_print_line(struct trace_iterator *iter)
{
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