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| author |   Andi Kleen <ak@linux.intel.com> | 2019-03-05 06:47:48 -0800 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-03-11 11:56:03 -0300 |
| commit | 2a1292cbd4e5c81edbf815a410fa2072c341db1e (patch) | |
| tree | a585e8e994e6003414734f49b2eccf838f402266 /tools/perf/util/symbol.c | |
| parent | perf time-utils: Add utility function to print time stamps in nanoseconds (diff) | |
| download | linux-dev-2a1292cbd4e5c81edbf815a410fa2072c341db1e.tar.xz linux-dev-2a1292cbd4e5c81edbf815a410fa2072c341db1e.zip | |
perf report: Parse time quantum
Many workloads change over time. 'perf report' currently aggregates the
whole time range reported in perf.data.
This patch adds an option for a time quantum to quantisize the perf.data
over time.
This just adds the option, will be used in follow on patches for a time
sort key.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20190305144758.12397-6-andi@firstfloor.org
[ Use NSEC_PER_[MU]SEC ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/symbol.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index eb873ea1c405..6b73a0eeb6a1 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -6,6 +6,7 @@ #include <string.h> #include <linux/kernel.h> #include <linux/mman.h> +#include <linux/time64.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/param.h> @@ -45,6 +46,7 @@ struct symbol_conf symbol_conf = { .demangle = true, .demangle_kernel = false, .cumulate_callchain = true, + .time_quantum = 100 * NSEC_PER_MSEC, /* 100ms */ .show_hist_headers = true, .symfs = "", .event_group = true, |