Messages in this thread Patch in this message | | | From | Taeung Song <> | Subject | [PATCH v2 3/9] perf annotate: Fix wrong --show-total-period option showing number of samples | Date | Fri, 14 Jul 2017 02:45:57 +0900 |
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Currently the --show-total-period option of perf-annotate is different from perf-report's.
For example, perf-report ordinarily shows period and number of samples.
# Overhead Samples Period Command Shared Object Symbol # ........ ............ ............ ....... .............. ............ # 9.83% 102 84813704 test test [.] knapsack
But --show-total-period of perf-annotate has the problem that show number of samples, not period. So fix this option to show period instead of number of samples.
Before:
Percent | Source code & Disassembly of old for cycles:ppp (102 samples) ----------------------------------------------------------------------------- : : : : Disassembly of section .text: : : 0000000000400816 <knapsack>: : knapsack(): 1 : 400816: push %rbp
After:
Percent | Source code & Disassembly of old for cycles:ppp (84813704 event count) ---------------------------------------------------------------------------------- : : : : Disassembly of section .text: : : 0000000000400816 <knapsack>: : knapsack(): 743737 : 400816: push %rbp
Reported-by: Namhyung Kim <namhyung@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Taeung Song <treeze.taeung@gmail.com> --- tools/perf/builtin-annotate.c | 4 +-- tools/perf/builtin-report.c | 13 ++++++---- tools/perf/builtin-top.c | 6 +++-- tools/perf/util/annotate.c | 57 +++++++++++++++++++++++++++++++++++++------ tools/perf/util/annotate.h | 4 ++- 5 files changed, 65 insertions(+), 19 deletions(-)
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index 7a5dc7e..f314661 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -177,14 +177,12 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel, */ process_branch_stack(sample->branch_stack, al, sample); - sample->period = 1; sample->weight = 1; - he = hists__add_entry(hists, al, NULL, NULL, NULL, sample, true); if (he == NULL) return -ENOMEM; - ret = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); + ret = hist_entry__inc_addr_samples(he, sample, evsel->idx, al->addr); hists__inc_nr_samples(hists, true); return ret; } diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 79a33eb..5f1894c 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -113,13 +113,14 @@ static int hist_iter__report_callback(struct hist_entry_iter *iter, struct report *rep = arg; struct hist_entry *he = iter->he; struct perf_evsel *evsel = iter->evsel; + struct perf_sample *sample = iter->sample; struct mem_info *mi; struct branch_info *bi; if (!ui__has_annotation()) return 0; - hist__account_cycles(iter->sample->branch_stack, al, iter->sample, + hist__account_cycles(sample->branch_stack, al, sample, rep->nonany_branch_mode); if (sort__mode == SORT_MODE__BRANCH) { @@ -136,14 +137,16 @@ static int hist_iter__report_callback(struct hist_entry_iter *iter, if (err) goto out; - err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); + err = hist_entry__inc_addr_samples(he, sample, + evsel->idx, al->addr); } else if (symbol_conf.cumulate_callchain) { if (single) - err = hist_entry__inc_addr_samples(he, evsel->idx, - al->addr); + err = hist_entry__inc_addr_samples(he, sample, + evsel->idx, al->addr); } else { - err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr); + err = hist_entry__inc_addr_samples(he, sample, + evsel->idx, al->addr); } out: diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 022486d..09885a4 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -183,6 +183,7 @@ static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip) static void perf_top__record_precise_ip(struct perf_top *top, struct hist_entry *he, + struct perf_sample *sample, int counter, u64 ip) { struct annotation *notes; @@ -199,7 +200,7 @@ static void perf_top__record_precise_ip(struct perf_top *top, if (pthread_mutex_trylock(¬es->lock)) return; - err = hist_entry__inc_addr_samples(he, counter, ip); + err = hist_entry__inc_addr_samples(he, sample, counter, ip); pthread_mutex_unlock(¬es->lock); @@ -671,7 +672,8 @@ static int hist_iter__top_callback(struct hist_entry_iter *iter, struct perf_evsel *evsel = iter->evsel; if (perf_hpp_list.sym && single) - perf_top__record_precise_ip(top, he, evsel->idx, al->addr); + perf_top__record_precise_ip(top, he, iter->sample, + evsel->idx, al->addr); hist__account_cycles(iter->sample->branch_stack, al, iter->sample, !(top->record_opts.branch_stack & PERF_SAMPLE_BRANCH_ANY)); diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 9c2a6e0..7311a00 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -816,9 +816,33 @@ int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx) return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr); } -int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip) +int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, + int evidx, u64 addr) { - return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip); + struct symbol *sym = he->ms.sym; + struct annotation *notes; + struct sym_hist *h; + s64 offset; + + if (sym == NULL) + return 0; + + notes = symbol__get_annotation(sym, false); + if (notes == NULL) + return -ENOMEM; + + if ((addr < sym->start || addr >= sym->end) && + (addr != sym->end || sym->start != sym->end)) + return -ERANGE; + + offset = addr - sym->start; + h = annotation__histogram(notes, evidx); + h->total_samples++; + h->addr[offset].nr_samples++; + h->total_period += sample->period; + h->addr[offset].period += sample->period; + + return 0; } static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map) @@ -934,6 +958,7 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, double percent = 0.0; sample->nr_samples = 0; + sample->period = 0; if (src_line) { size_t sizeof_src_line = sizeof(*src_line) + @@ -953,12 +978,16 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, } else { struct sym_hist *h = annotation__histogram(notes, evidx); unsigned int hits = 0; + unsigned int p = 0; - while (offset < end) - hits += h->addr[offset++].nr_samples; + while (offset < end) { + hits += h->addr[offset].nr_samples; + p += h->addr[offset++].period; + } if (h->total_samples) { sample->nr_samples = hits; + sample->period = p; percent = 100.0 * hits / h->total_samples; } } @@ -1131,8 +1160,8 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st color = get_percent_color(percent); if (symbol_conf.show_total_period) - color_fprintf(stdout, color, " %7" PRIu64, - sample.nr_samples); + color_fprintf(stdout, color, " %11" PRIu64, + sample.period); else color_fprintf(stdout, color, " %7.2f", percent); } @@ -1162,6 +1191,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st if (perf_evsel__is_group_event(evsel)) width *= evsel->nr_members; + if (symbol_conf.show_total_period) + width += perf_evsel__is_group_event(evsel) ? + 4 * evsel->nr_members : 4; + if (!*dl->line) printf(" %*s:\n", width, " "); else @@ -1704,6 +1737,7 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, h = annotation__histogram(notes, evidx + k); nr_samples = h->addr[i].nr_samples; + if (h->total_samples) percent = 100.0 * nr_samples / h->total_samples; @@ -1777,6 +1811,7 @@ static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel) if (h->addr[offset].nr_samples != 0) printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, sym->start + offset, h->addr[offset].nr_samples); + printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->total_samples", h->total_samples); } @@ -1812,8 +1847,14 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map, if (perf_evsel__is_group_event(evsel)) width *= evsel->nr_members; - graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n", - width, width, "Percent", d_filename, evsel_name, h->total_samples); + if (symbol_conf.show_total_period) + width += perf_evsel__is_group_event(evsel) ? + 4 * evsel->nr_members : 4; + + graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " %s)\n", + width, width, "Percent", d_filename, evsel_name, + symbol_conf.show_total_period ? h->total_period : h->total_samples, + symbol_conf.show_total_period ? "event count" : "samples"); printf("%-*.*s----\n", graph_dotted_len, graph_dotted_len, graph_dotted_line); diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index bef1d02..4406352 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -88,6 +88,7 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, struct sym_hist { u64 total_samples; + u64 total_period; struct sym_hist_entry addr[0]; }; @@ -160,7 +161,8 @@ int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, struct addr_map_symbol *start, unsigned cycles); -int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 addr); +int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, + int evidx, u64 addr); int symbol__alloc_hist(struct symbol *sym); void symbol__annotate_zero_histograms(struct symbol *sym); -- 2.7.4
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