| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Namhyung Kim | 6515 | 48.68% | 73 | 20.74% |
| Arnaldo Carvalho de Melo | 3758 | 28.08% | 135 | 38.35% |
| Jiri Olsa | 1325 | 9.90% | 50 | 14.20% |
| Jin Yao | 308 | 2.30% | 10 | 2.84% |
| Ian Rogers | 290 | 2.17% | 16 | 4.55% |
| Ravi Bangoria | 179 | 1.34% | 5 | 1.42% |
| Song Liu | 174 | 1.30% | 2 | 0.57% |
| Peter Zijlstra | 150 | 1.12% | 4 | 1.14% |
| Andi Kleen | 98 | 0.73% | 6 | 1.70% |
| James Clark | 88 | 0.66% | 1 | 0.28% |
| Ingo Molnar | 86 | 0.64% | 5 | 1.42% |
| Adrian Hunter | 84 | 0.63% | 6 | 1.70% |
| Martin Liška | 64 | 0.48% | 4 | 1.14% |
| Frédéric Weisbecker | 62 | 0.46% | 6 | 1.70% |
| Taeung Song | 61 | 0.46% | 9 | 2.56% |
| David Ahern | 24 | 0.18% | 1 | 0.28% |
| Greg Price | 21 | 0.16% | 1 | 0.28% |
| Stéphane Eranian | 17 | 0.13% | 2 | 0.57% |
| Mike Galbraith | 16 | 0.12% | 2 | 0.57% |
| Frederik Deweerdt | 15 | 0.11% | 1 | 0.28% |
| Li Wei | 13 | 0.10% | 1 | 0.28% |
| Li Huafei | 11 | 0.08% | 1 | 0.28% |
| Michael Petlan | 5 | 0.04% | 1 | 0.28% |
| Sukadev Bhattiprolu | 3 | 0.02% | 1 | 0.28% |
| Irina Tirdea | 3 | 0.02% | 1 | 0.28% |
| Dave Marchevsky | 3 | 0.02% | 1 | 0.28% |
| Vincent Whitchurch | 2 | 0.01% | 1 | 0.28% |
| Thomas Gleixner | 2 | 0.01% | 1 | 0.28% |
| John Kacur | 2 | 0.01% | 1 | 0.28% |
| Numfor Mbiziwo-Tiapo | 1 | 0.01% | 1 | 0.28% |
| Athira Rajeev | 1 | 0.01% | 1 | 0.28% |
| Josh Poimboeuf | 1 | 0.01% | 1 | 0.28% |
| Maciek Borzecki | 1 | 0.01% | 1 | 0.28% |
| Total | 13383 | 352 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> * * Parts came from builtin-annotate.c, see those files for further * copyright notes. */ #include <errno.h> #include <inttypes.h> #include <libgen.h> #include <stdlib.h> #include "util.h" // hex_width() #include "ui/ui.h" #include "sort.h" #include "build-id.h" #include "color.h" #include "config.h" #include "disasm.h" #include "dso.h" #include "env.h" #include "map.h" #include "maps.h" #include "symbol.h" #include "srcline.h" #include "units.h" #include "debug.h" #include "annotate.h" #include "annotate-data.h" #include "evsel.h" #include "evlist.h" #include "bpf-event.h" #include "bpf-utils.h" #include "block-range.h" #include "string2.h" #include "dwarf-regs.h" #include "util/event.h" #include "util/sharded_mutex.h" #include "arch/common.h" #include "namespaces.h" #include "thread.h" #include "hashmap.h" #include <regex.h> #include <linux/bitops.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/zalloc.h> #include <subcmd/parse-options.h> #include <subcmd/run-command.h> /* FIXME: For the HE_COLORSET */ #include "ui/browser.h" /* * FIXME: Using the same values as slang.h, * but that header may not be available everywhere */ #define LARROW_CHAR ((unsigned char)',') #define RARROW_CHAR ((unsigned char)'+') #define DARROW_CHAR ((unsigned char)'.') #define UARROW_CHAR ((unsigned char)'-') #include <linux/ctype.h> /* global annotation options */ struct annotation_options annotate_opts; /* Data type collection debug statistics */ struct annotated_data_stat ann_data_stat; LIST_HEAD(ann_insn_stat); /* Pseudo data types */ struct annotated_data_type stackop_type = { .self = { .type_name = (char *)"(stack operation)", .children = LIST_HEAD_INIT(stackop_type.self.children), }, }; struct annotated_data_type canary_type = { .self = { .type_name = (char *)"(stack canary)", .children = LIST_HEAD_INIT(canary_type.self.children), }, }; /* symbol histogram: key = offset << 16 | evsel->core.idx */ static size_t sym_hist_hash(long key, void *ctx __maybe_unused) { return (key >> 16) + (key & 0xffff); } static bool sym_hist_equal(long key1, long key2, void *ctx __maybe_unused) { return key1 == key2; } static struct annotated_source *annotated_source__new(void) { struct annotated_source *src = zalloc(sizeof(*src)); if (src != NULL) INIT_LIST_HEAD(&src->source); return src; } static __maybe_unused void annotated_source__delete(struct annotated_source *src) { struct hashmap_entry *cur; size_t bkt; if (src == NULL) return; if (src->samples) { hashmap__for_each_entry(src->samples, cur, bkt) zfree(&cur->pvalue); hashmap__free(src->samples); } zfree(&src->histograms); free(src); } static int annotated_source__alloc_histograms(struct annotated_source *src, int nr_hists) { src->nr_histograms = nr_hists; src->histograms = calloc(nr_hists, sizeof(*src->histograms)); if (src->histograms == NULL) return -1; src->samples = hashmap__new(sym_hist_hash, sym_hist_equal, NULL); if (src->samples == NULL) zfree(&src->histograms); return src->histograms ? 0 : -1; } void symbol__annotate_zero_histograms(struct symbol *sym) { struct annotation *notes = symbol__annotation(sym); annotation__lock(notes); if (notes->src != NULL) { memset(notes->src->histograms, 0, notes->src->nr_histograms * sizeof(*notes->src->histograms)); hashmap__clear(notes->src->samples); } if (notes->branch && notes->branch->cycles_hist) { memset(notes->branch->cycles_hist, 0, symbol__size(sym) * sizeof(struct cyc_hist)); } annotation__unlock(notes); } static int __symbol__account_cycles(struct cyc_hist *ch, u64 start, unsigned offset, unsigned cycles, unsigned have_start) { /* * For now we can only account one basic block per * final jump. But multiple could be overlapping. * Always account the longest one. So when * a shorter one has been already seen throw it away. * * We separately always account the full cycles. */ ch[offset].num_aggr++; ch[offset].cycles_aggr += cycles; if (cycles > ch[offset].cycles_max) ch[offset].cycles_max = cycles; if (ch[offset].cycles_min) { if (cycles && cycles < ch[offset].cycles_min) ch[offset].cycles_min = cycles; } else ch[offset].cycles_min = cycles; if (!have_start && ch[offset].have_start) return 0; if (ch[offset].num) { if (have_start && (!ch[offset].have_start || ch[offset].start > start)) { ch[offset].have_start = 0; ch[offset].cycles = 0; ch[offset].num = 0; if (ch[offset].reset < 0xffff) ch[offset].reset++; } else if (have_start && ch[offset].start < start) return 0; } if (ch[offset].num < NUM_SPARKS) ch[offset].cycles_spark[ch[offset].num] = cycles; ch[offset].have_start = have_start; ch[offset].start = start; ch[offset].cycles += cycles; ch[offset].num++; return 0; } static int __symbol__inc_addr_samples(struct map_symbol *ms, struct annotated_source *src, int evidx, u64 addr, struct perf_sample *sample) { struct symbol *sym = ms->sym; long hash_key; u64 offset; struct sym_hist *h; struct sym_hist_entry *entry; pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map__unmap_ip(ms->map, addr)); if ((addr < sym->start || addr >= sym->end) && (addr != sym->end || sym->start != sym->end)) { pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__, __LINE__, sym->name, sym->start, addr, sym->end); return -ERANGE; } offset = addr - sym->start; h = annotated_source__histogram(src, evidx); if (h == NULL) { pr_debug("%s(%d): ENOMEM! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 ", func: %d\n", __func__, __LINE__, sym->name, sym->start, addr, sym->end, sym->type == STT_FUNC); return -ENOMEM; } hash_key = offset << 16 | evidx; if (!hashmap__find(src->samples, hash_key, &entry)) { entry = zalloc(sizeof(*entry)); if (entry == NULL) return -ENOMEM; if (hashmap__add(src->samples, hash_key, entry) < 0) return -ENOMEM; } h->nr_samples++; h->period += sample->period; entry->nr_samples++; entry->period += sample->period; pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 ", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n", sym->start, sym->name, addr, addr - sym->start, evidx, entry->nr_samples, entry->period); return 0; } struct annotated_branch *annotation__get_branch(struct annotation *notes) { if (notes == NULL) return NULL; if (notes->branch == NULL) notes->branch = zalloc(sizeof(*notes->branch)); return notes->branch; } static struct cyc_hist *symbol__cycles_hist(struct symbol *sym) { struct annotation *notes = symbol__annotation(sym); struct annotated_branch *branch; branch = annotation__get_branch(notes); if (branch == NULL) return NULL; if (branch->cycles_hist == NULL) { const size_t size = symbol__size(sym); branch->cycles_hist = calloc(size, sizeof(struct cyc_hist)); } return branch->cycles_hist; } struct annotated_source *symbol__hists(struct symbol *sym, int nr_hists) { struct annotation *notes = symbol__annotation(sym); if (notes->src == NULL) { notes->src = annotated_source__new(); if (notes->src == NULL) return NULL; goto alloc_histograms; } if (notes->src->histograms == NULL) { alloc_histograms: annotated_source__alloc_histograms(notes->src, nr_hists); } return notes->src; } static int symbol__inc_addr_samples(struct map_symbol *ms, struct evsel *evsel, u64 addr, struct perf_sample *sample) { struct symbol *sym = ms->sym; struct annotated_source *src; if (sym == NULL) return 0; src = symbol__hists(sym, evsel->evlist->core.nr_entries); return src ? __symbol__inc_addr_samples(ms, src, evsel->core.idx, addr, sample) : 0; } static int symbol__account_cycles(u64 addr, u64 start, struct symbol *sym, unsigned cycles) { struct cyc_hist *cycles_hist; unsigned offset; if (sym == NULL) return 0; cycles_hist = symbol__cycles_hist(sym); if (cycles_hist == NULL) return -ENOMEM; if (addr < sym->start || addr >= sym->end) return -ERANGE; if (start) { if (start < sym->start || start >= sym->end) return -ERANGE; if (start >= addr) start = 0; } offset = addr - sym->start; return __symbol__account_cycles(cycles_hist, start ? start - sym->start : 0, offset, cycles, !!start); } int addr_map_symbol__account_cycles(struct addr_map_symbol *ams, struct addr_map_symbol *start, unsigned cycles) { u64 saddr = 0; int err; if (!cycles) return 0; /* * Only set start when IPC can be computed. We can only * compute it when the basic block is completely in a single * function. * Special case the case when the jump is elsewhere, but * it starts on the function start. */ if (start && (start->ms.sym == ams->ms.sym || (ams->ms.sym && start->addr == ams->ms.sym->start + map__start(ams->ms.map)))) saddr = start->al_addr; if (saddr == 0) pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n", ams->addr, start ? start->addr : 0, ams->ms.sym ? ams->ms.sym->start + map__start(ams->ms.map) : 0, saddr); err = symbol__account_cycles(ams->al_addr, saddr, ams->ms.sym, cycles); if (err) pr_debug2("account_cycles failed %d\n", err); return err; } struct annotation_line *annotated_source__get_line(struct annotated_source *src, s64 offset) { struct annotation_line *al; list_for_each_entry(al, &src->source, node) { if (al->offset == offset) return al; } return NULL; } static unsigned annotation__count_insn(struct annotation *notes, u64 start, u64 end) { struct annotation_line *al; unsigned n_insn = 0; al = annotated_source__get_line(notes->src, start); if (al == NULL) return 0; list_for_each_entry_from(al, ¬es->src->source, node) { if (al->offset == -1) continue; if ((u64)al->offset > end) break; n_insn++; } return n_insn; } static void annotated_branch__delete(struct annotated_branch *branch) { if (branch) { zfree(&branch->cycles_hist); free(branch); } } static void annotation__count_and_fill(struct annotation *notes, u64 start, u64 end, struct cyc_hist *ch) { unsigned n_insn; unsigned int cover_insn = 0; n_insn = annotation__count_insn(notes, start, end); if (n_insn && ch->num && ch->cycles) { struct annotation_line *al; struct annotated_branch *branch; float ipc = n_insn / ((double)ch->cycles / (double)ch->num); /* Hide data when there are too many overlaps. */ if (ch->reset >= 0x7fff) return; al = annotated_source__get_line(notes->src, start); if (al == NULL) return; list_for_each_entry_from(al, ¬es->src->source, node) { if (al->offset == -1) continue; if ((u64)al->offset > end) break; if (al->cycles && al->cycles->ipc == 0.0) { al->cycles->ipc = ipc; cover_insn++; } } branch = annotation__get_branch(notes); if (cover_insn && branch) { branch->hit_cycles += ch->cycles; branch->hit_insn += n_insn * ch->num; branch->cover_insn += cover_insn; } } } static int annotation__compute_ipc(struct annotation *notes, size_t size) { int err = 0; s64 offset; if (!notes->branch || !notes->branch->cycles_hist) return 0; notes->branch->total_insn = annotation__count_insn(notes, 0, size - 1); notes->branch->hit_cycles = 0; notes->branch->hit_insn = 0; notes->branch->cover_insn = 0; annotation__lock(notes); for (offset = size - 1; offset >= 0; --offset) { struct cyc_hist *ch; ch = ¬es->branch->cycles_hist[offset]; if (ch && ch->cycles) { struct annotation_line *al; al = annotated_source__get_line(notes->src, offset); if (al && al->cycles == NULL) { al->cycles = zalloc(sizeof(*al->cycles)); if (al->cycles == NULL) { err = ENOMEM; break; } } if (ch->have_start) annotation__count_and_fill(notes, ch->start, offset, ch); if (al && ch->num_aggr) { al->cycles->avg = ch->cycles_aggr / ch->num_aggr; al->cycles->max = ch->cycles_max; al->cycles->min = ch->cycles_min; } } } if (err) { while (++offset < (s64)size) { struct cyc_hist *ch = ¬es->branch->cycles_hist[offset]; if (ch && ch->cycles) { struct annotation_line *al; al = annotated_source__get_line(notes->src, offset); if (al) zfree(&al->cycles); } } } annotation__unlock(notes); return 0; } int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample, struct evsel *evsel) { return symbol__inc_addr_samples(&ams->ms, evsel, ams->al_addr, sample); } int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample, struct evsel *evsel, u64 ip) { return symbol__inc_addr_samples(&he->ms, evsel, ip, sample); } void annotation__exit(struct annotation *notes) { annotated_source__delete(notes->src); annotated_branch__delete(notes->branch); } static struct sharded_mutex *sharded_mutex; static void annotation__init_sharded_mutex(void) { /* As many mutexes as there are CPUs. */ sharded_mutex = sharded_mutex__new(cpu__max_present_cpu().cpu); } static size_t annotation__hash(const struct annotation *notes) { return (size_t)notes; } static struct mutex *annotation__get_mutex(const struct annotation *notes) { static pthread_once_t once = PTHREAD_ONCE_INIT; pthread_once(&once, annotation__init_sharded_mutex); if (!sharded_mutex) return NULL; return sharded_mutex__get_mutex(sharded_mutex, annotation__hash(notes)); } void annotation__lock(struct annotation *notes) NO_THREAD_SAFETY_ANALYSIS { struct mutex *mutex = annotation__get_mutex(notes); if (mutex) mutex_lock(mutex); } void annotation__unlock(struct annotation *notes) NO_THREAD_SAFETY_ANALYSIS { struct mutex *mutex = annotation__get_mutex(notes); if (mutex) mutex_unlock(mutex); } bool annotation__trylock(struct annotation *notes) { struct mutex *mutex = annotation__get_mutex(notes); if (!mutex) return false; return mutex_trylock(mutex); } void annotation_line__add(struct annotation_line *al, struct list_head *head) { list_add_tail(&al->node, head); } struct annotation_line * annotation_line__next(struct annotation_line *pos, struct list_head *head) { list_for_each_entry_continue(pos, head, node) if (pos->offset >= 0) return pos; return NULL; } static const char *annotate__address_color(struct block_range *br) { double cov = block_range__coverage(br); if (cov >= 0) { /* mark red for >75% coverage */ if (cov > 0.75) return PERF_COLOR_RED; /* mark dull for <1% coverage */ if (cov < 0.01) return PERF_COLOR_NORMAL; } return PERF_COLOR_MAGENTA; } static const char *annotate__asm_color(struct block_range *br) { double cov = block_range__coverage(br); if (cov >= 0) { /* mark dull for <1% coverage */ if (cov < 0.01) return PERF_COLOR_NORMAL; } return PERF_COLOR_BLUE; } static void annotate__branch_printf(struct block_range *br, u64 addr) { bool emit_comment = true; if (!br) return; #if 1 if (br->is_target && br->start == addr) { struct block_range *branch = br; double p; /* * Find matching branch to our target. */ while (!branch->is_branch) branch = block_range__next(branch); p = 100 *(double)br->entry / branch->coverage; if (p > 0.1) { if (emit_comment) { emit_comment = false; printf("\t#"); } /* * The percentage of coverage joined at this target in relation * to the next branch. */ printf(" +%.2f%%", p); } } #endif if (br->is_branch && br->end == addr) { double p = 100*(double)br->taken / br->coverage; if (p > 0.1) { if (emit_comment) { emit_comment = false; printf("\t#"); } /* * The percentage of coverage leaving at this branch, and * its prediction ratio. */ printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken); } } } static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width) { s64 offset = dl->al.offset; const u64 addr = start + offset; struct block_range *br; br = block_range__find(addr); color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr); color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line); annotate__branch_printf(br, addr); return 0; } static int annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start, struct evsel *evsel, u64 len, int min_pcnt, int printed, int max_lines, struct annotation_line *queue, int addr_fmt_width, int percent_type) { struct disasm_line *dl = container_of(al, struct disasm_line, al); static const char *prev_line; if (al->offset != -1) { double max_percent = 0.0; int i, nr_percent = 1; const char *color; struct annotation *notes = symbol__annotation(sym); for (i = 0; i < al->data_nr; i++) { double percent; percent = annotation_data__percent(&al->data[i], percent_type); if (percent > max_percent) max_percent = percent; } if (al->data_nr > nr_percent) nr_percent = al->data_nr; if (max_percent < min_pcnt) return -1; if (max_lines && printed >= max_lines) return 1; if (queue != NULL) { list_for_each_entry_from(queue, ¬es->src->source, node) { if (queue == al) break; annotation_line__print(queue, sym, start, evsel, len, 0, 0, 1, NULL, addr_fmt_width, percent_type); } } color = get_percent_color(max_percent); for (i = 0; i < nr_percent; i++) { struct annotation_data *data = &al->data[i]; double percent; percent = annotation_data__percent(data, percent_type); color = get_percent_color(percent); if (symbol_conf.show_total_period) color_fprintf(stdout, color, " %11" PRIu64, data->he.period); else if (symbol_conf.show_nr_samples) color_fprintf(stdout, color, " %7" PRIu64, data->he.nr_samples); else color_fprintf(stdout, color, " %7.2f", percent); } printf(" : "); disasm_line__print(dl, start, addr_fmt_width); /* * Also color the filename and line if needed, with * the same color than the percentage. Don't print it * twice for close colored addr with the same filename:line */ if (al->path) { if (!prev_line || strcmp(prev_line, al->path)) { color_fprintf(stdout, color, " // %s", al->path); prev_line = al->path; } } printf("\n"); } else if (max_lines && printed >= max_lines) return 1; else { int width = symbol_conf.show_total_period ? 12 : 8; if (queue) return -1; if (evsel__is_group_event(evsel)) width *= evsel->core.nr_members; if (!*al->line) printf(" %*s:\n", width, " "); else printf(" %*s: %-*d %s\n", width, " ", addr_fmt_width, al->line_nr, al->line); } return 0; } static void calc_percent(struct annotation *notes, struct evsel *evsel, struct annotation_data *data, s64 offset, s64 end) { struct hists *hists = evsel__hists(evsel); int evidx = evsel->core.idx; struct sym_hist *sym_hist = annotation__histogram(notes, evidx); unsigned int hits = 0; u64 period = 0; while (offset < end) { struct sym_hist_entry *entry; entry = annotated_source__hist_entry(notes->src, evidx, offset); if (entry) { hits += entry->nr_samples; period += entry->period; } ++offset; } if (sym_hist->nr_samples) { data->he.period = period; data->he.nr_samples = hits; data->percent[PERCENT_HITS_LOCAL] = 100.0 * hits / sym_hist->nr_samples; } if (hists->stats.nr_non_filtered_samples) data->percent[PERCENT_HITS_GLOBAL] = 100.0 * hits / hists->stats.nr_non_filtered_samples; if (sym_hist->period) data->percent[PERCENT_PERIOD_LOCAL] = 100.0 * period / sym_hist->period; if (hists->stats.total_period) data->percent[PERCENT_PERIOD_GLOBAL] = 100.0 * period / hists->stats.total_period; } static void annotation__calc_percent(struct annotation *notes, struct evsel *leader, s64 len) { struct annotation_line *al, *next; struct evsel *evsel; list_for_each_entry(al, ¬es->src->source, node) { s64 end; int i = 0; if (al->offset == -1) continue; next = annotation_line__next(al, ¬es->src->source); end = next ? next->offset : len; for_each_group_evsel(evsel, leader) { struct annotation_data *data; BUG_ON(i >= al->data_nr); data = &al->data[i++]; calc_percent(notes, evsel, data, al->offset, end); } } } void symbol__calc_percent(struct symbol *sym, struct evsel *evsel) { struct annotation *notes = symbol__annotation(sym); annotation__calc_percent(notes, evsel, symbol__size(sym)); } static int evsel__get_arch(struct evsel *evsel, struct arch **parch) { struct perf_env *env = evsel__env(evsel); const char *arch_name = perf_env__arch(env); struct arch *arch; int err; if (!arch_name) { *parch = NULL; return errno; } *parch = arch = arch__find(arch_name); if (arch == NULL) { pr_err("%s: unsupported arch %s\n", __func__, arch_name); return ENOTSUP; } if (arch->init) { err = arch->init(arch, env ? env->cpuid : NULL); if (err) { pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); return err; } } return 0; } int symbol__annotate(struct map_symbol *ms, struct evsel *evsel, struct arch **parch) { struct symbol *sym = ms->sym; struct annotation *notes = symbol__annotation(sym); struct annotate_args args = { .evsel = evsel, .options = &annotate_opts, }; struct arch *arch = NULL; int err; err = evsel__get_arch(evsel, &arch); if (err < 0) return err; if (parch) *parch = arch; if (notes->src && !list_empty(¬es->src->source)) return 0; args.arch = arch; args.ms = *ms; if (notes->src == NULL) { notes->src = annotated_source__new(); if (notes->src == NULL) return -1; } if (annotate_opts.full_addr) notes->src->start = map__objdump_2mem(ms->map, ms->sym->start); else notes->src->start = map__rip_2objdump(ms->map, ms->sym->start); return symbol__disassemble(sym, &args); } static void insert_source_line(struct rb_root *root, struct annotation_line *al) { struct annotation_line *iter; struct rb_node **p = &root->rb_node; struct rb_node *parent = NULL; unsigned int percent_type = annotate_opts.percent_type; int i, ret; while (*p != NULL) { parent = *p; iter = rb_entry(parent, struct annotation_line, rb_node); ret = strcmp(iter->path, al->path); if (ret == 0) { for (i = 0; i < al->data_nr; i++) { iter->data[i].percent_sum += annotation_data__percent(&al->data[i], percent_type); } return; } if (ret < 0) p = &(*p)->rb_left; else p = &(*p)->rb_right; } for (i = 0; i < al->data_nr; i++) { al->data[i].percent_sum = annotation_data__percent(&al->data[i], percent_type); } rb_link_node(&al->rb_node, parent, p); rb_insert_color(&al->rb_node, root); } static int cmp_source_line(struct annotation_line *a, struct annotation_line *b) { int i; for (i = 0; i < a->data_nr; i++) { if (a->data[i].percent_sum == b->data[i].percent_sum) continue; return a->data[i].percent_sum > b->data[i].percent_sum; } return 0; } static void __resort_source_line(struct rb_root *root, struct annotation_line *al) { struct annotation_line *iter; struct rb_node **p = &root->rb_node; struct rb_node *parent = NULL; while (*p != NULL) { parent = *p; iter = rb_entry(parent, struct annotation_line, rb_node); if (cmp_source_line(al, iter)) p = &(*p)->rb_left; else p = &(*p)->rb_right; } rb_link_node(&al->rb_node, parent, p); rb_insert_color(&al->rb_node, root); } static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root) { struct annotation_line *al; struct rb_node *node; node = rb_first(src_root); while (node) { struct rb_node *next; al = rb_entry(node, struct annotation_line, rb_node); next = rb_next(node); rb_erase(node, src_root); __resort_source_line(dest_root, al); node = next; } } static void print_summary(struct rb_root *root, const char *filename) { struct annotation_line *al; struct rb_node *node; printf("\nSorted summary for file %s\n", filename); printf("----------------------------------------------\n\n"); if (RB_EMPTY_ROOT(root)) { printf(" Nothing higher than %1.1f%%\n", MIN_GREEN); return; } node = rb_first(root); while (node) { double percent, percent_max = 0.0; const char *color; char *path; int i; al = rb_entry(node, struct annotation_line, rb_node); for (i = 0; i < al->data_nr; i++) { percent = al->data[i].percent_sum; color = get_percent_color(percent); color_fprintf(stdout, color, " %7.2f", percent); if (percent > percent_max) percent_max = percent; } path = al->path; color = get_percent_color(percent_max); color_fprintf(stdout, color, " %s\n", path); node = rb_next(node); } } static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel) { int evidx = evsel->core.idx; struct annotation *notes = symbol__annotation(sym); struct sym_hist *h = annotation__histogram(notes, evidx); u64 len = symbol__size(sym), offset; for (offset = 0; offset < len; ++offset) { struct sym_hist_entry *entry; entry = annotated_source__hist_entry(notes->src, evidx, offset); if (entry && entry->nr_samples != 0) printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, sym->start + offset, entry->nr_samples); } printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples); } static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start) { char bf[32]; struct annotation_line *line; list_for_each_entry_reverse(line, lines, node) { if (line->offset != -1) return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset); } return 0; } int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel) { struct map *map = ms->map; struct symbol *sym = ms->sym; struct dso *dso = map__dso(map); char *filename; const char *d_filename; const char *evsel_name = evsel__name(evsel); struct annotation *notes = symbol__annotation(sym); struct sym_hist *h = annotation__histogram(notes, evsel->core.idx); struct annotation_line *pos, *queue = NULL; struct annotation_options *opts = &annotate_opts; u64 start = map__rip_2objdump(map, sym->start); int printed = 2, queue_len = 0, addr_fmt_width; int more = 0; bool context = opts->context; u64 len; int width = symbol_conf.show_total_period ? 12 : 8; int graph_dotted_len; char buf[512]; filename = strdup(dso__long_name(dso)); if (!filename) return -ENOMEM; if (opts->full_path) d_filename = filename; else d_filename = basename(filename); len = symbol__size(sym); if (evsel__is_group_event(evsel)) { width *= evsel->core.nr_members; evsel__group_desc(evsel, buf, sizeof(buf)); evsel_name = buf; } graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples, " "percent: %s)\n", width, width, symbol_conf.show_total_period ? "Period" : symbol_conf.show_nr_samples ? "Samples" : "Percent", d_filename, evsel_name, h->nr_samples, percent_type_str(opts->percent_type)); printf("%-*.*s----\n", graph_dotted_len, graph_dotted_len, graph_dotted_line); if (verbose > 0) symbol__annotate_hits(sym, evsel); addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start); list_for_each_entry(pos, ¬es->src->source, node) { int err; if (context && queue == NULL) { queue = pos; queue_len = 0; } err = annotation_line__print(pos, sym, start, evsel, len, opts->min_pcnt, printed, opts->max_lines, queue, addr_fmt_width, opts->percent_type); switch (err) { case 0: ++printed; if (context) { printed += queue_len; queue = NULL; queue_len = 0; } break; case 1: /* filtered by max_lines */ ++more; break; case -1: default: /* * Filtered by min_pcnt or non IP lines when * context != 0 */ if (!context) break; if (queue_len == context) queue = list_entry(queue->node.next, typeof(*queue), node); else ++queue_len; break; } } free(filename); return more; } static void FILE__set_percent_color(void *fp __maybe_unused, double percent __maybe_unused, bool current __maybe_unused) { } static int FILE__set_jumps_percent_color(void *fp __maybe_unused, int nr __maybe_unused, bool current __maybe_unused) { return 0; } static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused) { return 0; } static void FILE__printf(void *fp, const char *fmt, ...) { va_list args; va_start(args, fmt); vfprintf(fp, fmt, args); va_end(args); } static void FILE__write_graph(void *fp, int graph) { const char *s; switch (graph) { case DARROW_CHAR: s = "↓"; break; case UARROW_CHAR: s = "↑"; break; case LARROW_CHAR: s = "←"; break; case RARROW_CHAR: s = "→"; break; default: s = "?"; break; } fputs(s, fp); } static int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp) { struct annotation *notes = symbol__annotation(sym); struct annotation_write_ops wops = { .first_line = true, .obj = fp, .set_color = FILE__set_color, .set_percent_color = FILE__set_percent_color, .set_jumps_percent_color = FILE__set_jumps_percent_color, .printf = FILE__printf, .write_graph = FILE__write_graph, }; struct annotation_line *al; list_for_each_entry(al, ¬es->src->source, node) { if (annotation_line__filter(al)) continue; annotation_line__write(al, notes, &wops); fputc('\n', fp); wops.first_line = false; } return 0; } int map_symbol__annotation_dump(struct map_symbol *ms, struct evsel *evsel) { const char *ev_name = evsel__name(evsel); char buf[1024]; char *filename; int err = -1; FILE *fp; if (asprintf(&filename, "%s.annotation", ms->sym->name) < 0) return -1; fp = fopen(filename, "w"); if (fp == NULL) goto out_free_filename; if (evsel__is_group_event(evsel)) { evsel__group_desc(evsel, buf, sizeof(buf)); ev_name = buf; } fprintf(fp, "%s() %s\nEvent: %s\n\n", ms->sym->name, dso__long_name(map__dso(ms->map)), ev_name); symbol__annotate_fprintf2(ms->sym, fp); fclose(fp); err = 0; out_free_filename: free(filename); return err; } void symbol__annotate_zero_histogram(struct symbol *sym, int evidx) { struct annotation *notes = symbol__annotation(sym); struct sym_hist *h = annotation__histogram(notes, evidx); memset(h, 0, sizeof(*notes->src->histograms) * notes->src->nr_histograms); } void symbol__annotate_decay_histogram(struct symbol *sym, int evidx) { struct annotation *notes = symbol__annotation(sym); struct sym_hist *h = annotation__histogram(notes, evidx); struct annotation_line *al; h->nr_samples = 0; list_for_each_entry(al, ¬es->src->source, node) { struct sym_hist_entry *entry; if (al->offset == -1) continue; entry = annotated_source__hist_entry(notes->src, evidx, al->offset); if (entry == NULL) continue; entry->nr_samples = entry->nr_samples * 7 / 8; h->nr_samples += entry->nr_samples; } } void annotated_source__purge(struct annotated_source *as) { struct annotation_line *al, *n; list_for_each_entry_safe(al, n, &as->source, node) { list_del_init(&al->node); disasm_line__free(disasm_line(al)); } } static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp) { size_t printed; if (dl->al.offset == -1) return fprintf(fp, "%s\n", dl->al.line); printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.name); if (dl->ops.raw[0] != '\0') { printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ", dl->ops.raw); } return printed + fprintf(fp, "\n"); } size_t disasm__fprintf(struct list_head *head, FILE *fp) { struct disasm_line *pos; size_t printed = 0; list_for_each_entry(pos, head, al.node) printed += disasm_line__fprintf(pos, fp); return printed; } bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym) { if (!dl || !dl->ins.ops || !ins__is_jump(&dl->ins) || !disasm_line__has_local_offset(dl) || dl->ops.target.offset < 0 || dl->ops.target.offset >= (s64)symbol__size(sym)) return false; return true; } static void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym) { struct annotation_line *al; /* PLT symbols contain external offsets */ if (strstr(sym->name, "@plt")) return; list_for_each_entry(al, ¬es->src->source, node) { struct disasm_line *dl; struct annotation_line *target; dl = disasm_line(al); if (!disasm_line__is_valid_local_jump(dl, sym)) continue; target = annotated_source__get_line(notes->src, dl->ops.target.offset); /* * FIXME: Oops, no jump target? Buggy disassembler? Or do we * have to adjust to the previous offset? */ if (target == NULL) continue; if (++target->jump_sources > notes->src->max_jump_sources) notes->src->max_jump_sources = target->jump_sources; } } static void annotation__set_index(struct annotation *notes) { struct annotation_line *al; struct annotated_source *src = notes->src; src->widths.max_line_len = 0; src->nr_entries = 0; src->nr_asm_entries = 0; list_for_each_entry(al, &src->source, node) { size_t line_len = strlen(al->line); if (src->widths.max_line_len < line_len) src->widths.max_line_len = line_len; al->idx = src->nr_entries++; if (al->offset != -1) al->idx_asm = src->nr_asm_entries++; else al->idx_asm = -1; } } static inline int width_jumps(int n) { if (n >= 100) return 5; if (n / 10) return 2; return 1; } static int annotation__max_ins_name(struct annotation *notes) { int max_name = 0, len; struct annotation_line *al; list_for_each_entry(al, ¬es->src->source, node) { if (al->offset == -1) continue; len = strlen(disasm_line(al)->ins.name); if (max_name < len) max_name = len; } return max_name; } static void annotation__init_column_widths(struct annotation *notes, struct symbol *sym) { notes->src->widths.addr = notes->src->widths.target = notes->src->widths.min_addr = hex_width(symbol__size(sym)); notes->src->widths.max_addr = hex_width(sym->end); notes->src->widths.jumps = width_jumps(notes->src->max_jump_sources); notes->src->widths.max_ins_name = annotation__max_ins_name(notes); } void annotation__update_column_widths(struct annotation *notes) { if (annotate_opts.use_offset) notes->src->widths.target = notes->src->widths.min_addr; else if (annotate_opts.full_addr) notes->src->widths.target = BITS_PER_LONG / 4; else notes->src->widths.target = notes->src->widths.max_addr; notes->src->widths.addr = notes->src->widths.target; if (annotate_opts.show_nr_jumps) notes->src->widths.addr += notes->src->widths.jumps + 1; } void annotation__toggle_full_addr(struct annotation *notes, struct map_symbol *ms) { annotate_opts.full_addr = !annotate_opts.full_addr; if (annotate_opts.full_addr) notes->src->start = map__objdump_2mem(ms->map, ms->sym->start); else notes->src->start = map__rip_2objdump(ms->map, ms->sym->start); annotation__update_column_widths(notes); } static void annotation__calc_lines(struct annotation *notes, struct map_symbol *ms, struct rb_root *root) { struct annotation_line *al; struct rb_root tmp_root = RB_ROOT; list_for_each_entry(al, ¬es->src->source, node) { double percent_max = 0.0; u64 addr; int i; for (i = 0; i < al->data_nr; i++) { double percent; percent = annotation_data__percent(&al->data[i], annotate_opts.percent_type); if (percent > percent_max) percent_max = percent; } if (percent_max <= 0.5) continue; addr = map__rip_2objdump(ms->map, ms->sym->start); al->path = get_srcline(map__dso(ms->map), addr + al->offset, NULL, false, true, ms->sym->start + al->offset); insert_source_line(&tmp_root, al); } resort_source_line(root, &tmp_root); } static void symbol__calc_lines(struct map_symbol *ms, struct rb_root *root) { struct annotation *notes = symbol__annotation(ms->sym); annotation__calc_lines(notes, ms, root); } int symbol__tty_annotate2(struct map_symbol *ms, struct evsel *evsel) { struct dso *dso = map__dso(ms->map); struct symbol *sym = ms->sym; struct rb_root source_line = RB_ROOT; struct hists *hists = evsel__hists(evsel); char buf[1024]; int err; err = symbol__annotate2(ms, evsel, NULL); if (err) { char msg[BUFSIZ]; dso__set_annotate_warned(dso); symbol__strerror_disassemble(ms, err, msg, sizeof(msg)); ui__error("Couldn't annotate %s:\n%s", sym->name, msg); return -1; } if (annotate_opts.print_lines) { srcline_full_filename = annotate_opts.full_path; symbol__calc_lines(ms, &source_line); print_summary(&source_line, dso__long_name(dso)); } hists__scnprintf_title(hists, buf, sizeof(buf)); fprintf(stdout, "%s, [percent: %s]\n%s() %s\n", buf, percent_type_str(annotate_opts.percent_type), sym->name, dso__long_name(dso)); symbol__annotate_fprintf2(sym, stdout); annotated_source__purge(symbol__annotation(sym)->src); return 0; } int symbol__tty_annotate(struct map_symbol *ms, struct evsel *evsel) { struct dso *dso = map__dso(ms->map); struct symbol *sym = ms->sym; struct rb_root source_line = RB_ROOT; int err; err = symbol__annotate(ms, evsel, NULL); if (err) { char msg[BUFSIZ]; dso__set_annotate_warned(dso); symbol__strerror_disassemble(ms, err, msg, sizeof(msg)); ui__error("Couldn't annotate %s:\n%s", sym->name, msg); return -1; } symbol__calc_percent(sym, evsel); if (annotate_opts.print_lines) { srcline_full_filename = annotate_opts.full_path; symbol__calc_lines(ms, &source_line); print_summary(&source_line, dso__long_name(dso)); } symbol__annotate_printf(ms, evsel); annotated_source__purge(symbol__annotation(sym)->src); return 0; } bool ui__has_annotation(void) { return use_browser == 1 && perf_hpp_list.sym; } static double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes, unsigned int percent_type) { double percent_max = 0.0; int i; for (i = 0; i < notes->src->nr_events; i++) { double percent; percent = annotation_data__percent(&al->data[i], percent_type); if (percent > percent_max) percent_max = percent; } return percent_max; } static void disasm_line__write(struct disasm_line *dl, struct annotation *notes, void *obj, char *bf, size_t size, void (*obj__printf)(void *obj, const char *fmt, ...), void (*obj__write_graph)(void *obj, int graph)) { if (dl->ins.ops && dl->ins.ops->scnprintf) { if (ins__is_jump(&dl->ins)) { bool fwd; if (dl->ops.target.outside) goto call_like; fwd = dl->ops.target.offset > dl->al.offset; obj__write_graph(obj, fwd ? DARROW_CHAR : UARROW_CHAR); obj__printf(obj, " "); } else if (ins__is_call(&dl->ins)) { call_like: obj__write_graph(obj, RARROW_CHAR); obj__printf(obj, " "); } else if (ins__is_ret(&dl->ins)) { obj__write_graph(obj, LARROW_CHAR); obj__printf(obj, " "); } else { obj__printf(obj, " "); } } else { obj__printf(obj, " "); } disasm_line__scnprintf(dl, bf, size, !annotate_opts.use_offset, notes->src->widths.max_ins_name); } static void ipc_coverage_string(char *bf, int size, struct annotation *notes) { double ipc = 0.0, coverage = 0.0; struct annotated_branch *branch = annotation__get_branch(notes); if (branch && branch->hit_cycles) ipc = branch->hit_insn / ((double)branch->hit_cycles); if (branch && branch->total_insn) { coverage = branch->cover_insn * 100.0 / ((double)branch->total_insn); } scnprintf(bf, size, "(Average IPC: %.2f, IPC Coverage: %.1f%%)", ipc, coverage); } static void __annotation_line__write(struct annotation_line *al, struct annotation *notes, bool first_line, bool current_entry, bool change_color, int width, void *obj, unsigned int percent_type, int (*obj__set_color)(void *obj, int color), void (*obj__set_percent_color)(void *obj, double percent, bool current), int (*obj__set_jumps_percent_color)(void *obj, int nr, bool current), void (*obj__printf)(void *obj, const char *fmt, ...), void (*obj__write_graph)(void *obj, int graph)) { double percent_max = annotation_line__max_percent(al, notes, percent_type); int pcnt_width = annotation__pcnt_width(notes), cycles_width = annotation__cycles_width(notes); bool show_title = false; char bf[256]; int printed; if (first_line && (al->offset == -1 || percent_max == 0.0)) { if (notes->branch && al->cycles) { if (al->cycles->ipc == 0.0 && al->cycles->avg == 0) show_title = true; } else show_title = true; } if (al->offset != -1 && percent_max != 0.0) { int i; for (i = 0; i < notes->src->nr_events; i++) { double percent; percent = annotation_data__percent(&al->data[i], percent_type); obj__set_percent_color(obj, percent, current_entry); if (symbol_conf.show_total_period) { obj__printf(obj, "%11" PRIu64 " ", al->data[i].he.period); } else if (symbol_conf.show_nr_samples) { obj__printf(obj, "%6" PRIu64 " ", al->data[i].he.nr_samples); } else { obj__printf(obj, "%6.2f ", percent); } } } else { obj__set_percent_color(obj, 0, current_entry); if (!show_title) obj__printf(obj, "%-*s", pcnt_width, " "); else { obj__printf(obj, "%-*s", pcnt_width, symbol_conf.show_total_period ? "Period" : symbol_conf.show_nr_samples ? "Samples" : "Percent"); } } if (notes->branch) { if (al->cycles && al->cycles->ipc) obj__printf(obj, "%*.2f ", ANNOTATION__IPC_WIDTH - 1, al->cycles->ipc); else if (!show_title) obj__printf(obj, "%*s", ANNOTATION__IPC_WIDTH, " "); else obj__printf(obj, "%*s ", ANNOTATION__IPC_WIDTH - 1, "IPC"); if (!annotate_opts.show_minmax_cycle) { if (al->cycles && al->cycles->avg) obj__printf(obj, "%*" PRIu64 " ", ANNOTATION__CYCLES_WIDTH - 1, al->cycles->avg); else if (!show_title) obj__printf(obj, "%*s", ANNOTATION__CYCLES_WIDTH, " "); else obj__printf(obj, "%*s ", ANNOTATION__CYCLES_WIDTH - 1, "Cycle"); } else { if (al->cycles) { char str[32]; scnprintf(str, sizeof(str), "%" PRIu64 "(%" PRIu64 "/%" PRIu64 ")", al->cycles->avg, al->cycles->min, al->cycles->max); obj__printf(obj, "%*s ", ANNOTATION__MINMAX_CYCLES_WIDTH - 1, str); } else if (!show_title) obj__printf(obj, "%*s", ANNOTATION__MINMAX_CYCLES_WIDTH, " "); else obj__printf(obj, "%*s ", ANNOTATION__MINMAX_CYCLES_WIDTH - 1, "Cycle(min/max)"); } if (show_title && !*al->line) { ipc_coverage_string(bf, sizeof(bf), notes); obj__printf(obj, "%*s", ANNOTATION__AVG_IPC_WIDTH, bf); } } obj__printf(obj, " "); if (!*al->line) obj__printf(obj, "%-*s", width - pcnt_width - cycles_width, " "); else if (al->offset == -1) { if (al->line_nr && annotate_opts.show_linenr) printed = scnprintf(bf, sizeof(bf), "%-*d ", notes->src->widths.addr + 1, al->line_nr); else printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->src->widths.addr, " "); obj__printf(obj, bf); obj__printf(obj, "%-*s", width - printed - pcnt_width - cycles_width + 1, al->line); } else { u64 addr = al->offset; int color = -1; if (!annotate_opts.use_offset) addr += notes->src->start; if (!annotate_opts.use_offset) { printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr); } else { if (al->jump_sources && annotate_opts.offset_level >= ANNOTATION__OFFSET_JUMP_TARGETS) { if (annotate_opts.show_nr_jumps) { int prev; printed = scnprintf(bf, sizeof(bf), "%*d ", notes->src->widths.jumps, al->jump_sources); prev = obj__set_jumps_percent_color(obj, al->jump_sources, current_entry); obj__printf(obj, bf); obj__set_color(obj, prev); } print_addr: printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ", notes->src->widths.target, addr); } else if (ins__is_call(&disasm_line(al)->ins) && annotate_opts.offset_level >= ANNOTATION__OFFSET_CALL) { goto print_addr; } else if (annotate_opts.offset_level == ANNOTATION__MAX_OFFSET_LEVEL) { goto print_addr; } else { printed = scnprintf(bf, sizeof(bf), "%-*s ", notes->src->widths.addr, " "); } } if (change_color) color = obj__set_color(obj, HE_COLORSET_ADDR); obj__printf(obj, bf); if (change_color) obj__set_color(obj, color); disasm_line__write(disasm_line(al), notes, obj, bf, sizeof(bf), obj__printf, obj__write_graph); obj__printf(obj, "%-*s", width - pcnt_width - cycles_width - 3 - printed, bf); } } void annotation_line__write(struct annotation_line *al, struct annotation *notes, struct annotation_write_ops *wops) { __annotation_line__write(al, notes, wops->first_line, wops->current_entry, wops->change_color, wops->width, wops->obj, annotate_opts.percent_type, wops->set_color, wops->set_percent_color, wops->set_jumps_percent_color, wops->printf, wops->write_graph); } int symbol__annotate2(struct map_symbol *ms, struct evsel *evsel, struct arch **parch) { struct symbol *sym = ms->sym; struct annotation *notes = symbol__annotation(sym); size_t size = symbol__size(sym); int nr_pcnt = 1, err; if (evsel__is_group_event(evsel)) nr_pcnt = evsel->core.nr_members; err = symbol__annotate(ms, evsel, parch); if (err) return err; symbol__calc_percent(sym, evsel); annotation__set_index(notes); annotation__mark_jump_targets(notes, sym); err = annotation__compute_ipc(notes, size); if (err) return err; annotation__init_column_widths(notes, sym); notes->src->nr_events = nr_pcnt; annotation__update_column_widths(notes); sym->annotate2 = 1; return 0; } static int annotation__config(const char *var, const char *value, void *data) { struct annotation_options *opt = data; if (!strstarts(var, "annotate.")) return 0; if (!strcmp(var, "annotate.offset_level")) { perf_config_u8(&opt->offset_level, "offset_level", value); if (opt->offset_level > ANNOTATION__MAX_OFFSET_LEVEL) opt->offset_level = ANNOTATION__MAX_OFFSET_LEVEL; else if (opt->offset_level < ANNOTATION__MIN_OFFSET_LEVEL) opt->offset_level = ANNOTATION__MIN_OFFSET_LEVEL; } else if (!strcmp(var, "annotate.hide_src_code")) { opt->hide_src_code = perf_config_bool("hide_src_code", value); } else if (!strcmp(var, "annotate.jump_arrows")) { opt->jump_arrows = perf_config_bool("jump_arrows", value); } else if (!strcmp(var, "annotate.show_linenr")) { opt->show_linenr = perf_config_bool("show_linenr", value); } else if (!strcmp(var, "annotate.show_nr_jumps")) { opt->show_nr_jumps = perf_config_bool("show_nr_jumps", value); } else if (!strcmp(var, "annotate.show_nr_samples")) { symbol_conf.show_nr_samples = perf_config_bool("show_nr_samples", value); } else if (!strcmp(var, "annotate.show_total_period")) { symbol_conf.show_total_period = perf_config_bool("show_total_period", value); } else if (!strcmp(var, "annotate.use_offset")) { opt->use_offset = perf_config_bool("use_offset", value); } else if (!strcmp(var, "annotate.disassembler_style")) { opt->disassembler_style = strdup(value); if (!opt->disassembler_style) { pr_err("Not enough memory for annotate.disassembler_style\n"); return -1; } } else if (!strcmp(var, "annotate.objdump")) { opt->objdump_path = strdup(value); if (!opt->objdump_path) { pr_err("Not enough memory for annotate.objdump\n"); return -1; } } else if (!strcmp(var, "annotate.addr2line")) { symbol_conf.addr2line_path = strdup(value); if (!symbol_conf.addr2line_path) { pr_err("Not enough memory for annotate.addr2line\n"); return -1; } } else if (!strcmp(var, "annotate.demangle")) { symbol_conf.demangle = perf_config_bool("demangle", value); } else if (!strcmp(var, "annotate.demangle_kernel")) { symbol_conf.demangle_kernel = perf_config_bool("demangle_kernel", value); } else { pr_debug("%s variable unknown, ignoring...", var); } return 0; } void annotation_options__init(void) { struct annotation_options *opt = &annotate_opts; memset(opt, 0, sizeof(*opt)); /* Default values. */ opt->use_offset = true; opt->jump_arrows = true; opt->annotate_src = true; opt->offset_level = ANNOTATION__OFFSET_JUMP_TARGETS; opt->percent_type = PERCENT_PERIOD_LOCAL; } void annotation_options__exit(void) { zfree(&annotate_opts.disassembler_style); zfree(&annotate_opts.objdump_path); } void annotation_config__init(void) { perf_config(annotation__config, &annotate_opts); } static unsigned int parse_percent_type(char *str1, char *str2) { unsigned int type = (unsigned int) -1; if (!strcmp("period", str1)) { if (!strcmp("local", str2)) type = PERCENT_PERIOD_LOCAL; else if (!strcmp("global", str2)) type = PERCENT_PERIOD_GLOBAL; } if (!strcmp("hits", str1)) { if (!strcmp("local", str2)) type = PERCENT_HITS_LOCAL; else if (!strcmp("global", str2)) type = PERCENT_HITS_GLOBAL; } return type; } int annotate_parse_percent_type(const struct option *opt __maybe_unused, const char *_str, int unset __maybe_unused) { unsigned int type; char *str1, *str2; int err = -1; str1 = strdup(_str); if (!str1) return -ENOMEM; str2 = strchr(str1, '-'); if (!str2) goto out; *str2++ = 0; type = parse_percent_type(str1, str2); if (type == (unsigned int) -1) type = parse_percent_type(str2, str1); if (type != (unsigned int) -1) { annotate_opts.percent_type = type; err = 0; } out: free(str1); return err; } int annotate_check_args(void) { struct annotation_options *args = &annotate_opts; if (args->prefix_strip && !args->prefix) { pr_err("--prefix-strip requires --prefix\n"); return -1; } return 0; } /* * Get register number and access offset from the given instruction. * It assumes AT&T x86 asm format like OFFSET(REG). Maybe it needs * to revisit the format when it handles different architecture. * Fills @reg and @offset when return 0. */ static int extract_reg_offset(struct arch *arch, const char *str, struct annotated_op_loc *op_loc) { char *p; char *regname; if (arch->objdump.register_char == 0) return -1; /* * It should start from offset, but it's possible to skip 0 * in the asm. So 0(%rax) should be same as (%rax). * * However, it also start with a segment select register like * %gs:0x18(%rbx). In that case it should skip the part. */ if (*str == arch->objdump.register_char) { if (arch__is(arch, "x86")) { /* FIXME: Handle other segment registers */ if (!strncmp(str, "%gs:", 4)) op_loc->segment = INSN_SEG_X86_GS; } while (*str && !isdigit(*str) && *str != arch->objdump.memory_ref_char) str++; } op_loc->offset = strtol(str, &p, 0); p = strchr(p, arch->objdump.register_char); if (p == NULL) return -1; regname = strdup(p); if (regname == NULL) return -1; op_loc->reg1 = get_dwarf_regnum(regname, 0); free(regname); /* Get the second register */ if (op_loc->multi_regs) { p = strchr(p + 1, arch->objdump.register_char); if (p == NULL) return -1; regname = strdup(p); if (regname == NULL) return -1; op_loc->reg2 = get_dwarf_regnum(regname, 0); free(regname); } return 0; } /** * annotate_get_insn_location - Get location of instruction * @arch: the architecture info * @dl: the target instruction * @loc: a buffer to save the data * * Get detailed location info (register and offset) in the instruction. * It needs both source and target operand and whether it accesses a * memory location. The offset field is meaningful only when the * corresponding mem flag is set. The reg2 field is meaningful only * when multi_regs flag is set. * * Some examples on x86: * * mov (%rax), %rcx # src_reg1 = rax, src_mem = 1, src_offset = 0 * # dst_reg1 = rcx, dst_mem = 0 * * mov 0x18, %r8 # src_reg1 = -1, src_mem = 0 * # dst_reg1 = r8, dst_mem = 0 * * mov %rsi, 8(%rbx,%rcx,4) # src_reg1 = rsi, src_mem = 0, src_multi_regs = 0 * # dst_reg1 = rbx, dst_reg2 = rcx, dst_mem = 1 * # dst_multi_regs = 1, dst_offset = 8 */ int annotate_get_insn_location(struct arch *arch, struct disasm_line *dl, struct annotated_insn_loc *loc) { struct ins_operands *ops; struct annotated_op_loc *op_loc; int i; if (ins__is_lock(&dl->ins)) ops = dl->ops.locked.ops; else ops = &dl->ops; if (ops == NULL) return -1; memset(loc, 0, sizeof(*loc)); for_each_insn_op_loc(loc, i, op_loc) { const char *insn_str = ops->source.raw; bool multi_regs = ops->source.multi_regs; if (i == INSN_OP_TARGET) { insn_str = ops->target.raw; multi_regs = ops->target.multi_regs; } /* Invalidate the register by default */ op_loc->reg1 = -1; op_loc->reg2 = -1; if (insn_str == NULL) continue; if (strchr(insn_str, arch->objdump.memory_ref_char)) { op_loc->mem_ref = true; op_loc->multi_regs = multi_regs; extract_reg_offset(arch, insn_str, op_loc); } else { char *s, *p = NULL; if (arch__is(arch, "x86")) { /* FIXME: Handle other segment registers */ if (!strncmp(insn_str, "%gs:", 4)) { op_loc->segment = INSN_SEG_X86_GS; op_loc->offset = strtol(insn_str + 4, &p, 0); if (p && p != insn_str + 4) op_loc->imm = true; continue; } } s = strdup(insn_str); if (s == NULL) return -1; if (*s == arch->objdump.register_char) op_loc->reg1 = get_dwarf_regnum(s, 0); else if (*s == arch->objdump.imm_char) { op_loc->offset = strtol(s + 1, &p, 0); if (p && p != s + 1) op_loc->imm = true; } free(s); } } return 0; } static struct disasm_line *find_disasm_line(struct symbol *sym, u64 ip, bool allow_update) { struct disasm_line *dl; struct annotation *notes; notes = symbol__annotation(sym); list_for_each_entry(dl, ¬es->src->source, al.node) { if (dl->al.offset == -1) continue; if (sym->start + dl->al.offset == ip) { /* * llvm-objdump places "lock" in a separate line and * in that case, we want to get the next line. */ if (ins__is_lock(&dl->ins) && *dl->ops.raw == '\0' && allow_update) { ip++; continue; } return dl; } } return NULL; } static struct annotated_item_stat *annotate_data_stat(struct list_head *head, const char *name) { struct annotated_item_stat *istat; list_for_each_entry(istat, head, list) { if (!strcmp(istat->name, name)) return istat; } istat = zalloc(sizeof(*istat)); if (istat == NULL) return NULL; istat->name = strdup(name); if (istat->name == NULL) { free(istat); return NULL; } list_add_tail(&istat->list, head); return istat; } static bool is_stack_operation(struct arch *arch, struct disasm_line *dl) { if (arch__is(arch, "x86")) { if (!strncmp(dl->ins.name, "push", 4) || !strncmp(dl->ins.name, "pop", 3) || !strncmp(dl->ins.name, "ret", 3)) return true; } return false; } static bool is_stack_canary(struct arch *arch, struct annotated_op_loc *loc) { /* On x86_64, %gs:40 is used for stack canary */ if (arch__is(arch, "x86")) { if (loc->segment == INSN_SEG_X86_GS && loc->imm && loc->offset == 40) return true; } return false; } static struct disasm_line * annotation__prev_asm_line(struct annotation *notes, struct disasm_line *curr) { struct list_head *sources = ¬es->src->source; struct disasm_line *prev; if (curr == list_first_entry(sources, struct disasm_line, al.node)) return NULL; prev = list_prev_entry(curr, al.node); while (prev->al.offset == -1 && prev != list_first_entry(sources, struct disasm_line, al.node)) prev = list_prev_entry(prev, al.node); if (prev->al.offset == -1) return NULL; return prev; } static struct disasm_line * annotation__next_asm_line(struct annotation *notes, struct disasm_line *curr) { struct list_head *sources = ¬es->src->source; struct disasm_line *next; if (curr == list_last_entry(sources, struct disasm_line, al.node)) return NULL; next = list_next_entry(curr, al.node); while (next->al.offset == -1 && next != list_last_entry(sources, struct disasm_line, al.node)) next = list_next_entry(next, al.node); if (next->al.offset == -1) return NULL; return next; } u64 annotate_calc_pcrel(struct map_symbol *ms, u64 ip, int offset, struct disasm_line *dl) { struct annotation *notes; struct disasm_line *next; u64 addr; notes = symbol__annotation(ms->sym); /* * PC-relative addressing starts from the next instruction address * But the IP is for the current instruction. Since disasm_line * doesn't have the instruction size, calculate it using the next * disasm_line. If it's the last one, we can use symbol's end * address directly. */ next = annotation__next_asm_line(notes, dl); if (next == NULL) addr = ms->sym->end + offset; else addr = ip + (next->al.offset - dl->al.offset) + offset; return map__rip_2objdump(ms->map, addr); } /** * hist_entry__get_data_type - find data type for given hist entry * @he: hist entry * * This function first annotates the instruction at @he->ip and extracts * register and offset info from it. Then it searches the DWARF debug * info to get a variable and type information using the address, register, * and offset. */ struct annotated_data_type *hist_entry__get_data_type(struct hist_entry *he) { struct map_symbol *ms = &he->ms; struct evsel *evsel = hists_to_evsel(he->hists); struct arch *arch; struct disasm_line *dl; struct annotated_insn_loc loc; struct annotated_op_loc *op_loc; struct annotated_data_type *mem_type; struct annotated_item_stat *istat; u64 ip = he->ip; int i; ann_data_stat.total++; if (ms->map == NULL || ms->sym == NULL) { ann_data_stat.no_sym++; return NULL; } if (!symbol_conf.init_annotation) { ann_data_stat.no_sym++; return NULL; } /* Make sure it has the disasm of the function */ if (symbol__annotate(ms, evsel, &arch) < 0) { ann_data_stat.no_insn++; return NULL; } /* * Get a disasm to extract the location from the insn. * This is too slow... */ dl = find_disasm_line(ms->sym, ip, /*allow_update=*/true); if (dl == NULL) { ann_data_stat.no_insn++; return NULL; } retry: istat = annotate_data_stat(&ann_insn_stat, dl->ins.name); if (istat == NULL) { ann_data_stat.no_insn++; return NULL; } if (annotate_get_insn_location(arch, dl, &loc) < 0) { ann_data_stat.no_insn_ops++; istat->bad++; return NULL; } if (is_stack_operation(arch, dl)) { istat->good++; he->mem_type_off = 0; return &stackop_type; } for_each_insn_op_loc(&loc, i, op_loc) { struct data_loc_info dloc = { .arch = arch, .thread = he->thread, .ms = ms, /* Recalculate IP for LOCK prefix or insn fusion */ .ip = ms->sym->start + dl->al.offset, .cpumode = he->cpumode, .op = op_loc, }; if (!op_loc->mem_ref && op_loc->segment == INSN_SEG_NONE) continue; /* Recalculate IP because of LOCK prefix or insn fusion */ ip = ms->sym->start + dl->al.offset; /* PC-relative addressing */ if (op_loc->reg1 == DWARF_REG_PC) { dloc.var_addr = annotate_calc_pcrel(ms, dloc.ip, op_loc->offset, dl); } /* This CPU access in kernel - pretend PC-relative addressing */ if (dso__kernel(map__dso(ms->map)) && arch__is(arch, "x86") && op_loc->segment == INSN_SEG_X86_GS && op_loc->imm) { dloc.var_addr = op_loc->offset; op_loc->reg1 = DWARF_REG_PC; } mem_type = find_data_type(&dloc); if (mem_type == NULL && is_stack_canary(arch, op_loc)) { istat->good++; he->mem_type_off = 0; return &canary_type; } if (mem_type) istat->good++; else istat->bad++; if (symbol_conf.annotate_data_sample) { annotated_data_type__update_samples(mem_type, evsel, dloc.type_offset, he->stat.nr_events, he->stat.period); } he->mem_type_off = dloc.type_offset; return mem_type; } /* * Some instructions can be fused and the actual memory access came * from the previous instruction. */ if (dl->al.offset > 0) { struct annotation *notes; struct disasm_line *prev_dl; notes = symbol__annotation(ms->sym); prev_dl = annotation__prev_asm_line(notes, dl); if (prev_dl && ins__is_fused(arch, prev_dl->ins.name, dl->ins.name)) { dl = prev_dl; goto retry; } } ann_data_stat.no_mem_ops++; istat->bad++; return NULL; } /* Basic block traversal (BFS) data structure */ struct basic_block_data { struct list_head queue; struct list_head visited; }; /* * During the traversal, it needs to know the parent block where the current * block block started from. Note that single basic block can be parent of * two child basic blocks (in case of condition jump). */ struct basic_block_link { struct list_head node; struct basic_block_link *parent; struct annotated_basic_block *bb; }; /* Check any of basic block in the list already has the offset */ static bool basic_block_has_offset(struct list_head *head, s64 offset) { struct basic_block_link *link; list_for_each_entry(link, head, node) { s64 begin_offset = link->bb->begin->al.offset; s64 end_offset = link->bb->end->al.offset; if (begin_offset <= offset && offset <= end_offset) return true; } return false; } static bool is_new_basic_block(struct basic_block_data *bb_data, struct disasm_line *dl) { s64 offset = dl->al.offset; if (basic_block_has_offset(&bb_data->visited, offset)) return false; if (basic_block_has_offset(&bb_data->queue, offset)) return false; return true; } /* Add a basic block starting from dl and link it to the parent */ static int add_basic_block(struct basic_block_data *bb_data, struct basic_block_link *parent, struct disasm_line *dl) { struct annotated_basic_block *bb; struct basic_block_link *link; if (dl == NULL) return -1; if (!is_new_basic_block(bb_data, dl)) return 0; bb = zalloc(sizeof(*bb)); if (bb == NULL) return -1; bb->begin = dl; bb->end = dl; INIT_LIST_HEAD(&bb->list); link = malloc(sizeof(*link)); if (link == NULL) { free(bb); return -1; } link->bb = bb; link->parent = parent; list_add_tail(&link->node, &bb_data->queue); return 0; } /* Returns true when it finds the target in the current basic block */ static bool process_basic_block(struct basic_block_data *bb_data, struct basic_block_link *link, struct symbol *sym, u64 target) { struct disasm_line *dl, *next_dl, *last_dl; struct annotation *notes = symbol__annotation(sym); bool found = false; dl = link->bb->begin; /* Check if it's already visited */ if (basic_block_has_offset(&bb_data->visited, dl->al.offset)) return false; last_dl = list_last_entry(¬es->src->source, struct disasm_line, al.node); if (last_dl->al.offset == -1) last_dl = annotation__prev_asm_line(notes, last_dl); if (last_dl == NULL) return false; list_for_each_entry_from(dl, ¬es->src->source, al.node) { /* Skip comment or debug info line */ if (dl->al.offset == -1) continue; /* Found the target instruction */ if (sym->start + dl->al.offset == target) { found = true; break; } /* End of the function, finish the block */ if (dl == last_dl) break; /* 'return' instruction finishes the block */ if (ins__is_ret(&dl->ins)) break; /* normal instructions are part of the basic block */ if (!ins__is_jump(&dl->ins)) continue; /* jump to a different function, tail call or return */ if (dl->ops.target.outside) break; /* jump instruction creates new basic block(s) */ next_dl = find_disasm_line(sym, sym->start + dl->ops.target.offset, /*allow_update=*/false); if (next_dl) add_basic_block(bb_data, link, next_dl); /* * FIXME: determine conditional jumps properly. * Conditional jumps create another basic block with the * next disasm line. */ if (!strstr(dl->ins.name, "jmp")) { next_dl = annotation__next_asm_line(notes, dl); if (next_dl) add_basic_block(bb_data, link, next_dl); } break; } link->bb->end = dl; return found; } /* * It founds a target basic block, build a proper linked list of basic blocks * by following the link recursively. */ static void link_found_basic_blocks(struct basic_block_link *link, struct list_head *head) { while (link) { struct basic_block_link *parent = link->parent; list_move(&link->bb->list, head); list_del(&link->node); free(link); link = parent; } } static void delete_basic_blocks(struct basic_block_data *bb_data) { struct basic_block_link *link, *tmp; list_for_each_entry_safe(link, tmp, &bb_data->queue, node) { list_del(&link->node); zfree(&link->bb); free(link); } list_for_each_entry_safe(link, tmp, &bb_data->visited, node) { list_del(&link->node); zfree(&link->bb); free(link); } } /** * annotate_get_basic_blocks - Get basic blocks for given address range * @sym: symbol to annotate * @src: source address * @dst: destination address * @head: list head to save basic blocks * * This function traverses disasm_lines from @src to @dst and save them in a * list of annotated_basic_block to @head. It uses BFS to find the shortest * path between two. The basic_block_link is to maintain parent links so * that it can build a list of blocks from the start. */ int annotate_get_basic_blocks(struct symbol *sym, s64 src, s64 dst, struct list_head *head) { struct basic_block_data bb_data = { .queue = LIST_HEAD_INIT(bb_data.queue), .visited = LIST_HEAD_INIT(bb_data.visited), }; struct basic_block_link *link; struct disasm_line *dl; int ret = -1; dl = find_disasm_line(sym, src, /*allow_update=*/false); if (dl == NULL) return -1; if (add_basic_block(&bb_data, /*parent=*/NULL, dl) < 0) return -1; /* Find shortest path from src to dst using BFS */ while (!list_empty(&bb_data.queue)) { link = list_first_entry(&bb_data.queue, struct basic_block_link, node); if (process_basic_block(&bb_data, link, sym, dst)) { link_found_basic_blocks(link, head); ret = 0; break; } list_move(&link->node, &bb_data.visited); } delete_basic_blocks(&bb_data); return ret; }
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