From 7ef2efaab4adeabaf0d6a71dfa5651edb517b503 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Fri, 1 Jul 2016 11:12:11 +0200 Subject: perf c2c report: Add shared cachelines stats stdio output Display global shared cachelines related stats table as part of the stdio output or when --stats option is speicified: $ perf c2c report --stats ... ================================================= Global Shared Cache Line Event Information ================================================= Total Shared Cache Lines : 1384 Load HITs on shared lines : 5995 Fill Buffer Hits on shared lines : 1726 L1D hits on shared lines : 1943 L2D hits on shared lines : 0 LLC hits on shared lines : 1360 Locked Access on shared lines : 1993 Store HITs on shared lines : 1504 Store L1D hits on shared lines : 1446 Total Merged records : 3527 Original-patch-by: Dick Fowles Original-patch-by: Don Zickus Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Andi Kleen Cc: David Ahern Cc: Joe Mario Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-p0gty8ctbdzisrniwqxhqmhq@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-c2c.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) (limited to 'tools/perf/builtin-c2c.c') diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 232d5f5ac7a2..f7b118b759cf 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -56,6 +56,10 @@ struct perf_c2c { bool show_src; bool use_stdio; bool stats_only; + + /* HITM shared clines stats */ + struct c2c_stats hitm_stats; + int shared_clines; }; static struct perf_c2c c2c; @@ -1732,6 +1736,39 @@ static int setup_nodes(struct perf_session *session) return 0; } +#define HAS_HITMS(__h) ((__h)->stats.lcl_hitm || (__h)->stats.rmt_hitm) + +static int resort_hitm_cb(struct hist_entry *he) +{ + struct c2c_hist_entry *c2c_he; + c2c_he = container_of(he, struct c2c_hist_entry, he); + + if (HAS_HITMS(c2c_he)) { + c2c.shared_clines++; + c2c_add_stats(&c2c.hitm_stats, &c2c_he->stats); + } + + return 0; +} + +static int hists__iterate_cb(struct hists *hists, hists__resort_cb_t cb) +{ + struct rb_node *next = rb_first(&hists->entries); + int ret = 0; + + while (next) { + struct hist_entry *he; + + he = rb_entry(next, struct hist_entry, rb_node); + ret = cb(he); + if (ret) + break; + next = rb_next(&he->rb_node); + } + + return ret; +} + static void print_c2c__display_stats(FILE *out) { int llc_misses; @@ -1777,6 +1814,26 @@ static void print_c2c__display_stats(FILE *out) fprintf(out, " Unable to parse data source : %10d\n", stats->noparse); } +static void print_shared_cacheline_info(FILE *out) +{ + struct c2c_stats *stats = &c2c.hitm_stats; + int hitm_cnt = stats->lcl_hitm + stats->rmt_hitm; + + fprintf(out, "=================================================\n"); + fprintf(out, " Global Shared Cache Line Event Information \n"); + fprintf(out, "=================================================\n"); + fprintf(out, " Total Shared Cache Lines : %10d\n", c2c.shared_clines); + fprintf(out, " Load HITs on shared lines : %10d\n", stats->load); + fprintf(out, " Fill Buffer Hits on shared lines : %10d\n", stats->ld_fbhit); + fprintf(out, " L1D hits on shared lines : %10d\n", stats->ld_l1hit); + fprintf(out, " L2D hits on shared lines : %10d\n", stats->ld_l2hit); + fprintf(out, " LLC hits on shared lines : %10d\n", stats->ld_llchit + stats->lcl_hitm); + fprintf(out, " Locked Access on shared lines : %10d\n", stats->locks); + fprintf(out, " Store HITs on shared lines : %10d\n", stats->store); + fprintf(out, " Store L1D hits on shared lines : %10d\n", stats->st_l1hit); + fprintf(out, " Total Merged records : %10d\n", hitm_cnt + stats->store); +} + static void print_cacheline(struct c2c_hists *c2c_hists, struct hist_entry *he_cl, struct perf_hpp_list *hpp_list, @@ -1841,6 +1898,8 @@ static void perf_c2c__hists_fprintf(FILE *out) setup_pager(); print_c2c__display_stats(out); + fprintf(out, "\n"); + print_shared_cacheline_info(out); if (c2c.stats_only) return; @@ -2131,7 +2190,8 @@ static int perf_c2c__report(int argc, const char **argv) ui_progress__init(&prog, c2c.hists.hists.nr_entries, "Sorting..."); hists__collapse_resort(&c2c.hists.hists, NULL); - hists__output_resort_cb(&c2c.hists.hists, &prog, resort_cl_cb); + hists__output_resort_cb(&c2c.hists.hists, &prog, resort_hitm_cb); + hists__iterate_cb(&c2c.hists.hists, resort_cl_cb); ui_progress__finish(); -- cgit v1.2.3