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perf.17853
perf-annotate-introduce-struct-sym_hist_entry.p...
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File perf-annotate-introduce-struct-sym_hist_entry.patch of Package perf.17853
From: Taeung Song <treeze.taeung@gmail.com> Date: Thu, 20 Jul 2017 06:36:45 +0900 Subject: perf annotate: Introduce struct sym_hist_entry Git-commit: 896bccd3cb8d95cbc565687715516009c5169e71 Patch-mainline: v4.14-rc1 References: bsc#1070010 (git-fixes) Signed-off-By: Tony Jones <tonyj@suse.de> struct sym_hist has addr[] but it should have not only number of samples but also the sample period. So use new struct symhist_entry to pave the way to have that. Committer notes: This initial patch will only introduce the struct sym_hist_entry and use only the nr_samples member, which makes the code clearer and paves the way to save the period as well. Signed-off-by: Taeung Song <treeze.taeung@gmail.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1500500205-16553-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/ui/browsers/annotate.c | 6 +++--- tools/perf/ui/gtk/annotate.c | 4 ++-- tools/perf/util/annotate.c | 45 ++++++++++++++++++++------------------- tools/perf/util/annotate.h | 9 ++++++-- 4 files changed, 35 insertions(+), 29 deletions(-) diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c index 6794a8bec404..dbe4e630b90f 100644 --- a/tools/perf/ui/browsers/annotate.c +++ b/tools/perf/ui/browsers/annotate.c @@ -450,14 +450,14 @@ static void annotate_browser__calc_percent(struct annotate_browser *browser, next = disasm__get_next_ip_line(¬es->src->source, pos); for (i = 0; i < browser->nr_events; i++) { - u64 nr_samples; + struct sym_hist_entry sample; bpos->samples[i].percent = disasm__calc_percent(notes, evsel->idx + i, pos->offset, next ? next->offset : len, - &path, &nr_samples); - bpos->samples[i].nr = nr_samples; + &path, &sample); + bpos->samples[i].nr = sample.nr_samples; if (max_percent < bpos->samples[i].percent) max_percent = bpos->samples[i].percent; diff --git a/tools/perf/ui/gtk/annotate.c b/tools/perf/ui/gtk/annotate.c index 87e3760624f2..d736fd57ab9b 100644 --- a/tools/perf/ui/gtk/annotate.c +++ b/tools/perf/ui/gtk/annotate.c @@ -34,10 +34,10 @@ static int perf_gtk__get_percent(char *buf, size_t size, struct symbol *sym, return 0; symhist = annotation__histogram(symbol__annotation(sym), evidx); - if (!symbol_conf.event_group && !symhist->addr[dl->offset]) + if (!symbol_conf.event_group && !symhist->addr[dl->offset].nr_samples) return 0; - percent = 100.0 * symhist->addr[dl->offset] / symhist->sum; + percent = 100.0 * symhist->addr[dl->offset].nr_samples / symhist->sum; markup = perf_gtk__get_percent_color(percent); if (markup) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 1742510f0120..c3829555ce1c 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -610,10 +610,10 @@ int symbol__alloc_hist(struct symbol *sym) size_t sizeof_sym_hist; /* Check for overflow when calculating sizeof_sym_hist */ - if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64)) + if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry)) return -1; - sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64)); + sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry)); /* Check for overflow in zalloc argument */ if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src)) @@ -714,11 +714,11 @@ static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map, offset = addr - sym->start; h = annotation__histogram(notes, evidx); h->sum++; - h->addr[offset]++; + h->addr[offset].nr_samples++; pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name, - addr, addr - sym->start, evidx, h->addr[offset]); + addr, addr - sym->start, evidx, h->addr[offset].nr_samples); return 0; } @@ -928,11 +928,12 @@ struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disa } double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, - s64 end, const char **path, u64 *nr_samples) + s64 end, const char **path, struct sym_hist_entry *sample) { struct source_line *src_line = notes->src->lines; double percent = 0.0; - *nr_samples = 0; + + sample->nr_samples = 0; if (src_line) { size_t sizeof_src_line = sizeof(*src_line) + @@ -946,7 +947,7 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, *path = src_line->path; percent += src_line->samples[evidx].percent; - *nr_samples += src_line->samples[evidx].nr; + sample->nr_samples += src_line->samples[evidx].nr; offset++; } } else { @@ -954,10 +955,10 @@ double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset, unsigned int hits = 0; while (offset < end) - hits += h->addr[offset++]; + hits += h->addr[offset++].nr_samples; if (h->sum) { - *nr_samples = hits; + sample->nr_samples = hits; percent = 100.0 * hits / h->sum; } } @@ -1057,10 +1058,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st if (dl->offset != -1) { const char *path = NULL; - u64 nr_samples; double percent, max_percent = 0.0; double *ppercents = &percent; - u64 *psamples = &nr_samples; + struct sym_hist_entry sample; + struct sym_hist_entry *psamples = &sample; int i, nr_percent = 1; const char *color; struct annotation *notes = symbol__annotation(sym); @@ -1074,7 +1075,7 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st if (perf_evsel__is_group_event(evsel)) { nr_percent = evsel->nr_members; ppercents = calloc(nr_percent, sizeof(double)); - psamples = calloc(nr_percent, sizeof(u64)); + psamples = calloc(nr_percent, sizeof(struct sym_hist_entry)); if (ppercents == NULL || psamples == NULL) { return -1; } @@ -1085,10 +1086,10 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st notes->src->lines ? i : evsel->idx + i, offset, next ? next->offset : (s64) len, - &path, &nr_samples); + &path, &sample); ppercents[i] = percent; - psamples[i] = nr_samples; + psamples[i] = sample; if (percent > max_percent) max_percent = percent; } @@ -1126,12 +1127,12 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st for (i = 0; i < nr_percent; i++) { percent = ppercents[i]; - nr_samples = psamples[i]; + sample = psamples[i]; color = get_percent_color(percent); if (symbol_conf.show_total_period) color_fprintf(stdout, color, " %7" PRIu64, - nr_samples); + sample.nr_samples); else color_fprintf(stdout, color, " %7.2f", percent); } @@ -1147,7 +1148,7 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st if (ppercents != &percent) free(ppercents); - if (psamples != &nr_samples) + if (psamples != &sample) free(psamples); } else if (max_lines && printed >= max_lines) @@ -1702,7 +1703,7 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, double percent = 0.0; h = annotation__histogram(notes, evidx + k); - nr_samples = h->addr[i]; + nr_samples = h->addr[i].nr_samples; if (h->sum) percent = 100.0 * nr_samples / h->sum; @@ -1773,9 +1774,9 @@ static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel) u64 len = symbol__size(sym), offset; for (offset = 0; offset < len; ++offset) - if (h->addr[offset] != 0) + if (h->addr[offset].nr_samples != 0) printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, - sym->start + offset, h->addr[offset]); + sym->start + offset, h->addr[offset].nr_samples); printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum); } @@ -1878,8 +1879,8 @@ void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) h->sum = 0; for (offset = 0; offset < len; ++offset) { - h->addr[offset] = h->addr[offset] * 7 / 8; - h->sum += h->addr[offset]; + h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8; + h->sum += h->addr[offset].nr_samples; } } diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index bac698d7cc6a..3a176633b324 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -74,16 +74,21 @@ static inline bool disasm_line__has_offset(const struct disasm_line *dl) return dl->ops.target.offset_avail; } +struct sym_hist_entry { + u64 nr_samples; + u64 period; +}; + void disasm_line__free(struct disasm_line *dl); struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos); int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw); 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, u64 *nr_samples); + s64 end, const char **path, struct sym_hist_entry *sample); struct sym_hist { u64 sum; - u64 addr[0]; + struct sym_hist_entry addr[0]; }; struct cyc_hist {
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