diff options
Diffstat (limited to 'tools/perf/builtin-diff.c')
-rw-r--r-- | tools/perf/builtin-diff.c | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 1063c31..e90c06a 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -26,6 +26,41 @@ static bool force; static bool show_displacement; static bool show_baseline_only; +enum { + COMPUTE_DELTA, + COMPUTE_RATIO, + COMPUTE_MAX, +}; + +const char *compute_names[COMPUTE_MAX] = { + [COMPUTE_DELTA] = "delta", + [COMPUTE_RATIO] = "ratio", +}; + +static int compute; + +static int setup_compute(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + int *cp = (int *) opt->value; + unsigned i; + + if (!str) { + *cp = COMPUTE_DELTA; + return 0; + } + + for (i = 0; i < COMPUTE_MAX; i++) + if (!strcmp(str, compute_names[i])) { + *cp = i; + return 0; + } + + pr_err("Failed: '%s' is not computation method " + "(use 'delta' or 'ratio').\n", str); + return -EINVAL; +} + static int hists__add_entry(struct hists *self, struct addr_location *al, u64 period) { @@ -262,6 +297,9 @@ static const struct option options[] = { "Show position displacement relative to baseline"), OPT_BOOLEAN('b', "baseline-only", &show_baseline_only, "Show only items with match in baseline"), + OPT_CALLBACK('c', "compute", &compute, "delta,ratio (default delta)", + "Entries differential computation selection", + setup_compute), OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, "dump raw trace in ASCII"), OPT_BOOLEAN('f', "force", &force, "don't complain, do it"), @@ -290,9 +328,19 @@ static void ui_init(void) /* No overhead column. */ perf_hpp__column_enable(PERF_HPP__OVERHEAD, false); - /* Display baseline/delta/displacement columns. */ + /* Display baseline/delta/ratio/displacement columns. */ perf_hpp__column_enable(PERF_HPP__BASELINE, true); - perf_hpp__column_enable(PERF_HPP__DELTA, true); + + switch (compute) { + case COMPUTE_DELTA: + perf_hpp__column_enable(PERF_HPP__DELTA, true); + break; + case COMPUTE_RATIO: + perf_hpp__column_enable(PERF_HPP__RATIO, true); + break; + default: + BUG_ON(1); + }; if (show_displacement) perf_hpp__column_enable(PERF_HPP__DISPL, true); |