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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 <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-czd17qsh5u5z0yc1estz9l2y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-05-04 10:50:09 +02:00 committed by Arnaldo Carvalho de Melo
parent 55177c4ea6
commit f0c50c1593
1 changed files with 91 additions and 0 deletions
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91
tools/perf/builtin-c2c.c
View File

@ -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,
};