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    Subject[PATCH 31/52] perf c2c report: Add 'cpucnt' sort key
    Date
    From: Jiri Olsa <jolsa@kernel.org>

    It is to be displayed in the single cacheline output:

    cpucnt

    It displays number of distinct cpus that hit 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-ib2kdwam52fby9u2k3ij6lhm@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    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 043344a720bf..2a1e883580a1 100644
    --- a/tools/perf/builtin-c2c.c
    +++ b/tools/perf/builtin-c2c.c
    @@ -1015,6 +1015,20 @@ 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);
    +
    + scnprintf(buf, 10, "%d", bitmap_weight(c2c_he->cpuset, c2c.cpus_cnt));
    + return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
    +}
    +
    #define HEADER_LOW(__h) \
    { \
    .line[1] = { \
    @@ -1341,6 +1355,14 @@ 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,
    @@ -1378,6 +1400,7 @@ static struct c2c_dimension *dimensions[] = {
    &dim_mean_rmt,
    &dim_mean_lcl,
    &dim_mean_load,
    + &dim_cpucnt,
    NULL,
    };

    --
    2.7.4
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