Add backtrace info to the CPU usage timechart.
Signed-off-by: Stanislav Fomichev <stfomic...@yandex-team.ru>
---
tools/perf/builtin-timechart.c | 10 ++++++++--
tools/perf/util/svghelper.c | 4 +++-
tools/perf/util/svghelper.h | 2 +-
3 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 0bda620a717d..d955095b6d63 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -837,8 +837,14 @@ static void draw_cpu_usage(struct timechart *tchart)
while (c) {
sample = c->samples;
while (sample) {
- if (sample->type == TYPE_RUNNING)
- svg_process(sample->cpu,
sample->start_time, sample->end_time, "sample", c->comm);
+ if (sample->type == TYPE_RUNNING) {
+ svg_process(sample->cpu,
+ sample->start_time,
+ sample->end_time,
+ "sample",
+ c->comm,
+ sample->backtrace);
+ }
sample = sample->next;
}
diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index 8b79d3ad1246..740f0328fc13 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -285,7 +285,7 @@ void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
fprintf(svgfile, "</g>\n");
}
-void svg_process(int cpu, u64 start, u64 end, const char *type, const char
*name)
+void svg_process(int cpu, u64 start, u64 end, const char *type, const char
*name, const char *backtrace)
{
double width;
@@ -295,6 +295,8 @@ void svg_process(int cpu, u64 start, u64 end, const char
*type, const char *name
fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\">\n",
time2pixels(start), cpu2y(cpu));
fprintf(svgfile, "<title>%s %s</title>\n", name, time_to_string(end -
start));
+ if (backtrace)
+ fprintf(svgfile, "<desc>Switched because:\n%s</desc>\n",
backtrace);
fprintf(svgfile, "<rect x=\"0\" width=\"%4.8f\" y=\"0\"
height=\"%4.1f\" class=\"%s\"/>\n",
time2pixels(end)-time2pixels(start), SLOT_MULT+SLOT_HEIGHT,
type);
width = time2pixels(end)-time2pixels(start);
diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
index fad79ceeac1a..7db6ae98bf2c 100644
--- a/tools/perf/util/svghelper.h
+++ b/tools/perf/util/svghelper.h
@@ -11,7 +11,7 @@ extern void svg_waiting(int Yslot, int cpu, u64 start, u64
end, const char *back
extern void svg_cpu_box(int cpu, u64 max_frequency, u64 turbo_frequency);
-extern void svg_process(int cpu, u64 start, u64 end, const char *type, const
char *name);
+extern void svg_process(int cpu, u64 start, u64 end, const char *type, const
char *name, const char *backtrace);
extern void svg_cstate(int cpu, u64 start, u64 end, int type);
extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq);
--
1.8.3.2
--
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