diff options
| -rw-r--r-- | tools/perf/Documentation/perf-diff.txt | 4 | ||||
| -rw-r--r-- | tools/perf/builtin-diff.c | 67 | ||||
| -rw-r--r-- | tools/perf/ui/hist.c | 24 | ||||
| -rw-r--r-- | tools/perf/ui/stdio/hist.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/hist.h | 2 |
5 files changed, 96 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt index 21cc2ef7756..194f37d635d 100644 --- a/tools/perf/Documentation/perf-diff.txt +++ b/tools/perf/Documentation/perf-diff.txt @@ -87,6 +87,10 @@ OPTIONS --period:: Show period values for both compared hist entries. +-F:: +--formula:: + Show formula for given computation. + COMPARISON METHODS ------------------ delta diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 2411dd18c55..dd9c064514f 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -25,6 +25,7 @@ static char diff__default_sort_order[] = "dso,symbol"; static bool force; static bool show_displacement; static bool show_period; +static bool show_formula; static bool show_baseline_only; static bool sort_compute; @@ -190,6 +191,62 @@ s64 perf_diff__compute_wdiff(struct hist_entry *he) return he->diff.wdiff; } +static int formula_delta(struct hist_entry *he, char *buf, size_t size) +{ + struct hist_entry *pair = he->pair; + + if (!pair) + return -1; + + return scnprintf(buf, size, + "(%" PRIu64 " * 100 / %" PRIu64 ") - " + "(%" PRIu64 " * 100 / %" PRIu64 ")", + he->stat.period, he->hists->stats.total_period, + pair->stat.period, pair->hists->stats.total_period); +} + +static int formula_ratio(struct hist_entry *he, char *buf, size_t size) +{ + struct hist_entry *pair = he->pair; + double new_period = he->stat.period; + double old_period = pair ? pair->stat.period : 0; + + if (!pair) + return -1; + + return scnprintf(buf, size, "%.0F / %.0F", new_period, old_period); +} + +static int formula_wdiff(struct hist_entry *he, char *buf, size_t size) +{ + struct hist_entry *pair = he->pair; + u64 new_period = he->stat.period; + u64 old_period = pair ? pair->stat.period : 0; + + if (!pair) + return -1; + + return scnprintf(buf, size, + "(%" PRIu64 " * " "%" PRId64 ") - (%" PRIu64 " * " "%" PRId64 ")", + new_period, compute_wdiff_w2, old_period, compute_wdiff_w1); +} + +int perf_diff__formula(char *buf, size_t size, struct hist_entry *he) +{ + switch (compute) { + case COMPUTE_DELTA: + return formula_delta(he, buf, size); + case COMPUTE_RATIO: + return formula_ratio(he, buf, size); + case COMPUTE_WEIGHTED_DIFF: + return formula_wdiff(he, buf, size); + default: + BUG_ON(1); + } + + return -1; +} + static int hists__add_entry(struct hists *self, struct addr_location *al, u64 period) { @@ -543,6 +600,8 @@ static const struct option options[] = { setup_compute), OPT_BOOLEAN('p', "period", &show_period, "Show period values."), + OPT_BOOLEAN('F', "formula", &show_formula, + "Show formula."), OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, "dump raw trace in ASCII"), OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), @@ -571,7 +630,10 @@ static void ui_init(void) /* No overhead column. */ perf_hpp__column_enable(PERF_HPP__OVERHEAD, false); - /* Display baseline/delta/ratio/displacement/periods columns. */ + /* + * Display baseline/delta/ratio/displacement/ + * formula/periods columns. + */ perf_hpp__column_enable(PERF_HPP__BASELINE, true); switch (compute) { @@ -591,6 +653,9 @@ static void ui_init(void) if (show_displacement) perf_hpp__column_enable(PERF_HPP__DISPL, true); + if (show_formula) + perf_hpp__column_enable(PERF_HPP__FORMULA, true); + if (show_period) { perf_hpp__column_enable(PERF_HPP__PERIOD, true); perf_hpp__column_enable(PERF_HPP__PERIOD_BASELINE, true); diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c index 2fadaff6312..305eb79f4af 100644 --- a/tools/perf/ui/hist.c +++ b/tools/perf/ui/hist.c @@ -359,6 +359,27 @@ static int hpp__entry_displ(struct perf_hpp *hpp, return scnprintf(hpp->buf, hpp->size, fmt, buf); } +static int hpp__header_formula(struct perf_hpp *hpp) +{ + const char *fmt = symbol_conf.field_sep ? "%s" : "%70s"; + + return scnprintf(hpp->buf, hpp->size, fmt, "Formula"); +} + +static int hpp__width_formula(struct perf_hpp *hpp __maybe_unused) +{ + return 70; +} + +static int hpp__entry_formula(struct perf_hpp *hpp, struct hist_entry *he) +{ + const char *fmt = symbol_conf.field_sep ? "%s" : "%-70s"; + char buf[96] = " "; + + perf_diff__formula(buf, sizeof(buf), he); + return scnprintf(hpp->buf, hpp->size, fmt, buf); +} + #define HPP__COLOR_PRINT_FNS(_name) \ .header = hpp__header_ ## _name, \ .width = hpp__width_ ## _name, \ @@ -383,7 +404,8 @@ struct perf_hpp_fmt perf_hpp__format[] = { { .cond = false, HPP__PRINT_FNS(delta) }, { .cond = false, HPP__PRINT_FNS(ratio) }, { .cond = false, HPP__PRINT_FNS(wdiff) }, - { .cond = false, HPP__PRINT_FNS(displ) } + { .cond = false, HPP__PRINT_FNS(displ) }, + { .cond = false, HPP__PRINT_FNS(formula) } }; #undef HPP__COLOR_PRINT_FNS diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c index fbd4e32d074..f0ee204f99b 100644 --- a/tools/perf/ui/stdio/hist.c +++ b/tools/perf/ui/stdio/hist.c @@ -342,7 +342,7 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows, const char *sep = symbol_conf.field_sep; const char *col_width = symbol_conf.col_width_list_str; int idx, nr_rows = 0; - char bf[64]; + char bf[96]; struct perf_hpp dummy_hpp = { .buf = bf, .size = sizeof(bf), diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 5604791e5ed..c751624d415 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -145,6 +145,7 @@ enum { PERF_HPP__RATIO, PERF_HPP__WEIGHTED_DIFF, PERF_HPP__DISPL, + PERF_HPP__FORMULA, PERF_HPP__MAX_INDEX }; @@ -210,4 +211,5 @@ unsigned int hists__sort_list_width(struct hists *self); double perf_diff__compute_delta(struct hist_entry *he); double perf_diff__compute_ratio(struct hist_entry *he); s64 perf_diff__compute_wdiff(struct hist_entry *he); +int perf_diff__formula(char *buf, size_t size, struct hist_entry *he); #endif /* __PERF_HIST_H */ |