Commit-ID: f0c50c15934e6300fca6fe2d1921dbd12a1fdf1c Gitweb: http://git.kernel.org/tip/f0c50c15934e6300fca6fe2d1921dbd12a1fdf1c Author: Jiri Olsa <jo...@kernel.org> AuthorDate: Wed, 4 May 2016 10:50:09 +0200 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Wed, 19 Oct 2016 13:18:31 -0300
perf c2c report: Add hitm percent sort key It is to be displayed in the main cachelines overall output: percent_hitm It displays HITMs percentage for cacheline. It counts remote HITMs at the moment, but it is changed later to support local as well, based on the sort configuration. Signed-off-by: Jiri Olsa <jo...@kernel.org> Cc: Andi Kleen <a...@firstfloor.org> Cc: David Ahern <dsah...@gmail.com> Cc: Don Zickus <dzic...@redhat.com> Cc: Joe Mario <jma...@redhat.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <a.p.zijls...@chello.nl> Link: http://lkml.kernel.org/n/tip-czd17qsh5u5z0yc1estz9...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/builtin-c2c.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 2411fe0..dd356d8 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -565,6 +565,87 @@ tot_loads_cmp(struct perf_hpp_fmt *fmt __maybe_unused, return tot_recs_left - tot_recs_right; } +typedef double (get_percent_cb)(struct c2c_hist_entry *); + +static int +percent_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he, get_percent_cb get_percent) +{ + struct c2c_hist_entry *c2c_he; + int width = c2c_width(fmt, hpp, he->hists); + double per; + + c2c_he = container_of(he, struct c2c_hist_entry, he); + per = get_percent(c2c_he); + + return hpp_color_scnprintf(hpp, "%*.2f%%", width - 1, per); +} + +static double percent_hitm(struct c2c_hist_entry *c2c_he) +{ + struct c2c_hists *hists; + struct c2c_stats *stats; + struct c2c_stats *total; + int tot, st; + double p; + + hists = container_of(c2c_he->he.hists, struct c2c_hists, hists); + stats = &c2c_he->stats; + total = &hists->stats; + + st = stats->rmt_hitm; + tot = total->rmt_hitm; + + p = tot ? (double) st / tot : 0; + + return 100 * p; +} + +#define PERC_STR(__s, __v) \ +({ \ + scnprintf(__s, sizeof(__s), "%.2F%%", __v); \ + __s; \ +}) + +static int +percent_hitm_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he) +{ + struct c2c_hist_entry *c2c_he; + int width = c2c_width(fmt, hpp, he->hists); + char buf[10]; + double per; + + c2c_he = container_of(he, struct c2c_hist_entry, he); + per = percent_hitm(c2c_he); + return scnprintf(hpp->buf, hpp->size, "%*s", width, PERC_STR(buf, per)); +} + +static int +percent_hitm_color(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, + struct hist_entry *he) +{ + return percent_color(fmt, hpp, he, percent_hitm); +} + +static int64_t +percent_hitm_cmp(struct perf_hpp_fmt *fmt __maybe_unused, + struct hist_entry *left, struct hist_entry *right) +{ + struct c2c_hist_entry *c2c_left; + struct c2c_hist_entry *c2c_right; + double per_left; + double per_right; + + c2c_left = container_of(left, struct c2c_hist_entry, he); + c2c_right = container_of(right, struct c2c_hist_entry, he); + + per_left = percent_hitm(c2c_left); + per_right = percent_hitm(c2c_right); + + return per_left - per_right; +} + #define HEADER_LOW(__h) \ { \ .line[1] = { \ @@ -768,6 +849,15 @@ static struct c2c_dimension dim_tot_loads = { .width = 7, }; +static struct c2c_dimension dim_percent_hitm = { + .header = HEADER_LOW("%hitm"), + .name = "percent_hitm", + .cmp = percent_hitm_cmp, + .entry = percent_hitm_entry, + .color = percent_hitm_color, + .width = 7, +}; + static struct c2c_dimension *dimensions[] = { &dim_dcacheline, &dim_offset, @@ -790,6 +880,7 @@ static struct c2c_dimension *dimensions[] = { &dim_ld_llcmiss, &dim_tot_recs, &dim_tot_loads, + &dim_percent_hitm, NULL, };
