diff options
Diffstat (limited to 'tools/perf/util/annotate.c')
| -rw-r--r-- | tools/perf/util/annotate.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index c269758d47c8..5200cafe20e7 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -41,6 +41,7 @@ #include "namespaces.h" #include "thread.h" #include "hashmap.h" +#include "strbuf.h" #include <regex.h> #include <linux/bitops.h> #include <linux/kernel.h> @@ -48,6 +49,7 @@ #include <linux/zalloc.h> #include <subcmd/parse-options.h> #include <subcmd/run-command.h> +#include <math.h> /* FIXME: For the HE_COLORSET */ #include "ui/browser.h" @@ -1719,6 +1721,149 @@ static void ipc_coverage_string(char *bf, int size, struct annotation *notes) ipc, coverage); } +int annotation_br_cntr_abbr_list(char **str, struct evsel *evsel, bool header) +{ + struct evsel *pos; + struct strbuf sb; + + if (evsel->evlist->nr_br_cntr <= 0) + return -ENOTSUP; + + strbuf_init(&sb, /*hint=*/ 0); + + if (header && strbuf_addf(&sb, "# Branch counter abbr list:\n")) + goto err; + + evlist__for_each_entry(evsel->evlist, pos) { + if (!(pos->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS)) + continue; + if (header && strbuf_addf(&sb, "#")) + goto err; + + if (strbuf_addf(&sb, " %s = %s\n", pos->name, pos->abbr_name)) + goto err; + } + + if (header && strbuf_addf(&sb, "#")) + goto err; + if (strbuf_addf(&sb, " '-' No event occurs\n")) + goto err; + + if (header && strbuf_addf(&sb, "#")) + goto err; + if (strbuf_addf(&sb, " '+' Event occurrences may be lost due to branch counter saturated\n")) + goto err; + + *str = strbuf_detach(&sb, NULL); + + return 0; +err: + strbuf_release(&sb); + return -ENOMEM; +} + +/* Assume the branch counter saturated at 3 */ +#define ANNOTATION_BR_CNTR_SATURATION 3 + +int annotation_br_cntr_entry(char **str, int br_cntr_nr, + u64 *br_cntr, int num_aggr, + struct evsel *evsel) +{ + struct evsel *pos = evsel ? evlist__first(evsel->evlist) : NULL; + bool saturated = false; + int i, j, avg, used; + struct strbuf sb; + + strbuf_init(&sb, /*hint=*/ 0); + for (i = 0; i < br_cntr_nr; i++) { + used = 0; + avg = ceil((double)(br_cntr[i] & ~ANNOTATION__BR_CNTR_SATURATED_FLAG) / + (double)num_aggr); + + /* + * A histogram with the abbr name is displayed by default. + * With -v, the exact number of branch counter is displayed. + */ + if (verbose) { + evlist__for_each_entry_from(evsel->evlist, pos) { + if ((pos->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS) && + (pos->br_cntr_idx == i)) + break; + } + if (strbuf_addstr(&sb, pos->abbr_name)) + goto err; + + if (!br_cntr[i]) { + if (strbuf_addstr(&sb, "=-")) + goto err; + } else { + if (strbuf_addf(&sb, "=%d", avg)) + goto err; + } + if (br_cntr[i] & ANNOTATION__BR_CNTR_SATURATED_FLAG) { + if (strbuf_addch(&sb, '+')) + goto err; + } else { + if (strbuf_addch(&sb, ' ')) + goto err; + } + + if ((i < br_cntr_nr - 1) && strbuf_addch(&sb, ',')) + goto err; + continue; + } + + if (strbuf_addch(&sb, '|')) + goto err; + + if (!br_cntr[i]) { + if (strbuf_addch(&sb, '-')) + goto err; + used++; + } else { + evlist__for_each_entry_from(evsel->evlist, pos) { + if ((pos->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_COUNTERS) && + (pos->br_cntr_idx == i)) + break; + } + if (br_cntr[i] & ANNOTATION__BR_CNTR_SATURATED_FLAG) + saturated = true; + + for (j = 0; j < avg; j++, used++) { + /* Print + if the number of logged events > 3 */ + if (j >= ANNOTATION_BR_CNTR_SATURATION) { + saturated = true; + break; + } + if (strbuf_addstr(&sb, pos->abbr_name)) + goto err; + } + + if (saturated) { + if (strbuf_addch(&sb, '+')) + goto err; + used++; + } + pos = list_next_entry(pos, core.node); + } + + for (j = used; j < ANNOTATION_BR_CNTR_SATURATION + 1; j++) { + if (strbuf_addch(&sb, ' ')) + goto err; + } + } + + if (!verbose && strbuf_addch(&sb, br_cntr_nr ? '|' : ' ')) + goto err; + + *str = strbuf_detach(&sb, NULL); + + return 0; +err: + strbuf_release(&sb); + return -ENOMEM; +} + 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, |