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author | Jiri Olsa | 2017-10-11 17:01:40 +0200 |
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committer | Arnaldo Carvalho de Melo | 2017-11-16 18:37:49 +0100 |
commit | 073ae601edc211383b62618effaaedaa8b1d22db (patch) | |
tree | 2a4187da8332b9fb549bf5b927a3f7ddd6f286b6 /tools | |
parent | perf annotate: Add samples into struct annotation_line (diff) | |
download | kernel-qcow2-linux-073ae601edc211383b62618effaaedaa8b1d22db.tar.gz kernel-qcow2-linux-073ae601edc211383b62618effaaedaa8b1d22db.tar.xz kernel-qcow2-linux-073ae601edc211383b62618effaaedaa8b1d22db.zip |
perf annotate: Add symbol__calc_percent function
Add symbol__calc_percent function, that calculates annotation data for
symbol and put the data in the struct annotation_line::samples array.
Committer notes:
Made symbol__calc_percent non static to be used in the next two patches,
which will get some fixups from jolsa, doing it this way to keep this
bisectable.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171011150158.11895-18-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/util/annotate.c | 62 | ||||
-rw-r--r-- | tools/perf/util/annotate.h | 1 |
2 files changed, 62 insertions, 1 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 313fb2e90dba..ff1036096347 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1628,6 +1628,62 @@ out_close_stdout: goto out_remove_tmp; } +static void calc_percent(struct sym_hist *hist, + struct annotation_data *sample, + s64 offset, s64 end) +{ + unsigned int hits = 0; + u64 period = 0; + + while (offset < end) { + hits += hist->addr[offset].nr_samples; + period += hist->addr[offset].period; + ++offset; + } + + if (hist->nr_samples) { + sample->he.period = period; + sample->he.nr_samples = hits; + sample->percent = 100.0 * hits / hist->nr_samples; + } +} + +static int annotation__calc_percent(struct annotation *notes, + struct perf_evsel *evsel, s64 len) +{ + struct annotation_line *al, *next; + + list_for_each_entry(al, ¬es->src->source, node) { + s64 end; + int i; + + if (al->offset == -1) + continue; + + next = annotation_line__next(al, ¬es->src->source); + end = next ? next->offset : len; + + for (i = 0; i < al->samples_nr; i++) { + struct annotation_data *sample; + struct sym_hist *hist; + + hist = annotation__histogram(notes, evsel->idx + i); + sample = &al->samples[i]; + + calc_percent(hist, sample, al->offset, end); + } + } + + return 0; +} + +int symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel) +{ + struct annotation *notes = symbol__annotation(sym); + + return annotation__calc_percent(notes, evsel, symbol__size(sym)); +} + int symbol__annotate(struct symbol *sym, struct map *map, struct perf_evsel *evsel, size_t privsize, struct arch **parch, char *cpuid) @@ -1663,7 +1719,11 @@ int symbol__annotate(struct symbol *sym, struct map *map, } } - return symbol__disassemble(sym, &args); + err = symbol__disassemble(sym, &args); + if (err) + return err; + + return symbol__calc_percent(sym, evsel); } static void insert_source_line(struct rb_root *root, struct source_line *src_line) diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index 55bdd9015f33..6056840da4c9 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -107,6 +107,7 @@ int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool r size_t disasm__fprintf(struct list_head *head, FILE *fp); double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, s64 end, const char **path, struct sym_hist_entry *sample); +int symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel); struct sym_hist { u64 nr_samples; |