[PATCH 2/5] sched/tracing: Show more info for funcgraph wakeup tracers

From: Changbin Du
Date: Tue Jan 01 2019 - 10:47:51 EST


Add these info fields to funcgraph wakeup tracers:
o Show CPU info since the waker could be on a different CPU.
o Show function duration and overhead.
o Show IRQ markers.

Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
---
kernel/trace/trace_sched_wakeup.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index b6c5fa10347e..da5b6e012840 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -180,8 +180,11 @@ static void wakeup_trace_close(struct trace_iterator *iter)
}

#define GRAPH_TRACER_FLAGS (TRACE_GRAPH_PRINT_PROC | \
+ TRACE_GRAPH_PRINT_CPU | \
TRACE_GRAPH_PRINT_REL_TIME | \
- TRACE_GRAPH_PRINT_DURATION)
+ TRACE_GRAPH_PRINT_DURATION | \
+ TRACE_GRAPH_PRINT_OVERHEAD | \
+ TRACE_GRAPH_PRINT_IRQS)

static enum print_line_t wakeup_print_line(struct trace_iterator *iter)
{
--
2.17.1