perf c2c report: Add llc load miss dimension key

It is to be displayed in the main cachelines overall output:

  ld_llcmiss

It displays bare number of LLC misses for cacheline.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-wojujik7zzen770mxn295mxa@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 6b60183..f525384 100644 (file)
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -421,6 +421,44 @@ STAT_FN(ld_l2hit)
 STAT_FN(ld_llchit)
 STAT_FN(rmt_hit)
 
+static uint64_t llc_miss(struct c2c_stats *stats)
+{
+       uint64_t llcmiss;
+
+       llcmiss = stats->lcl_dram +
+                 stats->rmt_dram +
+                 stats->rmt_hitm +
+                 stats->rmt_hit;
+
+       return llcmiss;
+}
+
+static int
+ld_llcmiss_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);
+
+       c2c_he = container_of(he, struct c2c_hist_entry, he);
+
+       return scnprintf(hpp->buf, hpp->size, "%*lu", width,
+                        llc_miss(&c2c_he->stats));
+}
+
+static int64_t
+ld_llcmiss_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;
+
+       c2c_left  = container_of(left, struct c2c_hist_entry, he);
+       c2c_right = container_of(right, struct c2c_hist_entry, he);
+
+       return llc_miss(&c2c_left->stats) - llc_miss(&c2c_right->stats);
+}
+
 #define HEADER_LOW(__h)                        \
        {                               \
                .line[1] = {            \
@@ -600,6 +638,14 @@ static struct c2c_dimension dim_ld_rmthit = {
        .width          = 8,
 };
 
+static struct c2c_dimension dim_ld_llcmiss = {
+       .header         = HEADER_BOTH("LLC", "Ld Miss"),
+       .name           = "ld_llcmiss",
+       .cmp            = ld_llcmiss_cmp,
+       .entry          = ld_llcmiss_entry,
+       .width          = 7,
+};
+
 static struct c2c_dimension *dimensions[] = {
        &dim_dcacheline,
        &dim_offset,
@@ -619,6 +665,7 @@ static struct c2c_dimension *dimensions[] = {
        &dim_ld_l2hit,
        &dim_ld_llchit,
        &dim_ld_rmthit,
+       &dim_ld_llcmiss,
        NULL,
 };