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Subject[PATCH 38/57] perf c2c report: Add cpu cnt sort key
Date
Adding cpu count dimension key wrapper.

It is to be displayed in the single cacheline output:

cpucnt

It displays number of distinct cpus that hit cacheline.

Link: http://lkml.kernel.org/n/tip-ib2kdwam52fby9u2k3ij6lhm@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/builtin-c2c.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 5d42f7912450..2318249362f8 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -1012,6 +1012,20 @@ MEAN_ENTRY(mean_rmt_entry, rmt_hitm);
MEAN_ENTRY(mean_lcl_entry, lcl_hitm);
MEAN_ENTRY(mean_load_entry, load);

+static int
+cpucnt_entry(struct perf_hpp_fmt *fmt __maybe_unused, 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];
+
+ c2c_he = container_of(he, struct c2c_hist_entry, he);
+
+ snprintf(buf, 10, "%d", bitmap_weight(c2c_he->cpuset, c2c.cpus_cnt));
+ return snprintf(hpp->buf, hpp->size, "%*s", width, buf);
+}
+
#define HEADER_LOW(__h) \
{ \
.line[1] = { \
@@ -1338,6 +1352,14 @@ static struct c2c_dimension dim_mean_load = {
.width = 8,
};

+static struct c2c_dimension dim_cpucnt = {
+ .header = HEADER_BOTH("cpu", "cnt"),
+ .name = "cpucnt",
+ .cmp = empty_cmp,
+ .entry = cpucnt_entry,
+ .width = 8,
+};
+
static struct c2c_dimension *dimensions[] = {
&dim_dcacheline,
&dim_offset,
@@ -1375,6 +1397,7 @@ static struct c2c_dimension *dimensions[] = {
&dim_mean_rmt,
&dim_mean_lcl,
&dim_mean_load,
+ &dim_cpucnt,
NULL,
};

--
2.7.4
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