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author | Jin Yao <yao.jin@linux.intel.com> | 2017-12-08 21:13:45 +0800 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-08 12:06:20 -0300 |
commit | 5b969bc766807e5c2f184d1d6f97b8471de946f1 (patch) | |
tree | 233dfaee94c4be763def3ad3b18ce91622d95b24 /tools/perf/builtin-report.c | |
parent | 9a9b8b4b2271e763c1600311a3d4ecc2ac359b55 (diff) | |
download | op-kernel-dev-5b969bc766807e5c2f184d1d6f97b8471de946f1.zip op-kernel-dev-5b969bc766807e5c2f184d1d6f97b8471de946f1.tar.gz |
perf report: Support time percent and multiple time ranges
perf report has a --time option to limit the time range of output. It
only supports absolute time.
Now this option is extended to support multiple time ranges and support
the percent of time.
For example:
1. Select the first and second 10% time slices:
perf report --time 10%/1,10%/2
2. Select from 0% to 10% and 30% to 40% slices:
perf report --time 0%-10%,30%-40%
Changelog:
v6: Fix the merge issue with latest perf/core branch.
No functional changes.
v5: Add checking of first/last sample time to detect if it's recorded
in perf.data. If it's not recorded, returns error message to user.
v4: Remove perf_time__skip_sample, only uses perf_time__ranges_skip_sample
v3: Since the definitions of first_sample_time/last_sample_time
are moved from perf_session to perf_evlist so change the
related code.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512738826-2628-6-git-send-email-yao.jin@linux.intel.com
[ Add missing colons at end of examples in the man page ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-report.c')
-rw-r--r-- | tools/perf/builtin-report.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 07827cd..770bf8a 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -52,6 +52,8 @@ #include <sys/stat.h> #include <unistd.h> +#define PTIME_RANGE_MAX 10 + struct report { struct perf_tool tool; struct perf_session *session; @@ -69,7 +71,8 @@ struct report { const char *cpu_list; const char *symbol_filter_str; const char *time_str; - struct perf_time_interval ptime; + struct perf_time_interval ptime_range[PTIME_RANGE_MAX]; + int range_num; float min_percent; u64 nr_entries; u64 queue_size; @@ -202,8 +205,10 @@ static int process_sample_event(struct perf_tool *tool, }; int ret = 0; - if (perf_time__skip_sample(&rep->ptime, sample->time)) + if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num, + sample->time)) { return 0; + } if (machine__resolve(machine, &al, sample) < 0) { pr_debug("problem processing %d event, skipping it.\n", @@ -1093,9 +1098,25 @@ repeat: if (symbol__init(&session->header.env) < 0) goto error; - if (perf_time__parse_str(&report.ptime, report.time_str) != 0) { - pr_err("Invalid time string\n"); - return -EINVAL; + if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) { + if (session->evlist->first_sample_time == 0 && + session->evlist->last_sample_time == 0) { + pr_err("No first/last sample time in perf data\n"); + return -EINVAL; + } + + report.range_num = perf_time__percent_parse_str( + report.ptime_range, PTIME_RANGE_MAX, + report.time_str, + session->evlist->first_sample_time, + session->evlist->last_sample_time); + + if (report.range_num < 0) { + pr_err("Invalid time string\n"); + return -EINVAL; + } + } else { + report.range_num = 1; } sort__setup_elide(stdout); |