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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-03 15:19:47 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-04-03 15:22:55 -0300 |
commit | b213eac245aa2d29a3b9dd90f3b96ab182337ee8 (patch) | |
tree | b448fa46d69a64d6ff809a58eb95fdf000f3f48e /tools/perf/util/annotate.c | |
parent | ef9ff6017e3c4593f3efa5776784cb417c58ad6c (diff) | |
download | linux-b213eac245aa2d29a3b9dd90f3b96ab182337ee8.tar.bz2 |
perf annotate: Introduce annotation__scnprintf_samples_period() method
To print a string using the total period (nr_events) and the number of
samples for a given annotation, i.e. for a given symbol, the counterpart
to hists__scnprintf_samples_period(), that is for all the samples in a
session (be it a live session, think 'perf top' or a perf.data file,
think 'perf report').
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Martin Liška <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196935
Link: https://lkml.kernel.org/n/tip-goj2wu4fxutc8vd46mw3yg14@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/annotate.c')
-rw-r--r-- | tools/perf/util/annotate.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 3a428d7c59b9..b956bb7eabcf 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -17,6 +17,7 @@ #include "config.h" #include "cache.h" #include "symbol.h" +#include "units.h" #include "debug.h" #include "annotate.h" #include "evsel.h" @@ -2597,6 +2598,43 @@ out_free_offsets: return -1; } +int __annotation__scnprintf_samples_period(struct annotation *notes, + char *bf, size_t size, + struct perf_evsel *evsel, + bool show_freq) +{ + const char *ev_name = perf_evsel__name(evsel); + char ref[30] = " show reference callgraph, "; + char sample_freq_str[64] = ""; + unsigned long nr_samples = 0; + int nr_members = 1; + bool enable_ref = false; + u64 nr_events = 0; + char unit; + int i; + + if (perf_evsel__is_group_event(evsel)) + nr_members = evsel->nr_members; + + for (i = 0; i < nr_members; i++) { + struct sym_hist *ah = annotation__histogram(notes, evsel->idx + i); + + nr_samples += ah->nr_samples; + nr_events += ah->period; + } + + if (symbol_conf.show_ref_callgraph && strstr(ev_name, "call-graph=no")) + enable_ref = true; + + if (show_freq) + scnprintf(sample_freq_str, sizeof(sample_freq_str), " %d Hz,", evsel->attr.sample_freq); + + nr_samples = convert_unit(nr_samples, &unit); + return scnprintf(bf, size, "Samples: %lu%c of event%s '%s',%s%sEvent count (approx.): %" PRIu64, + nr_samples, unit, evsel->nr_members > 1 ? "s" : "", + ev_name, sample_freq_str, enable_ref ? ref : " ", nr_events); +} + #define ANNOTATION__CFG(n) \ { .name = #n, .value = &annotation__default_options.n, } |