redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

perf c2c report: Add stats related sort keys

Browse source 
It is to be displayed in the single cacheline output:

  median, mean_rmt, mean_lcl, mean_load, stddev

It displays statistics hits related to cacheline accesses.

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-m1r4uc9lcykf1jhpvwk2gkj8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-06-05 13:40:53 +02:00 committed by Arnaldo Carvalho de Melo
parent 1e181b92a2
commit 92062d543f
1 changed files with 80 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

80
tools/perf/builtin-c2c.c
View file

@ -20,11 +20,20 @@ struct c2c_hists {
struct c2c_stats stats;
};
struct compute_stats {
struct stats lcl_hitm;
struct stats rmt_hitm;
struct stats load;
};
struct c2c_hist_entry {
struct c2c_hists *hists;
struct c2c_stats stats;
unsigned long *cpuset;
struct c2c_stats *node_stats;
struct compute_stats cstats;
/*
* must be at the end,
* because of its callchain dynamic entry
@ -61,6 +70,10 @@ static void *c2c_he_zalloc(size_t size)
if (!c2c_he->node_stats)
return NULL;
init_stats(&c2c_he->cstats.lcl_hitm);
init_stats(&c2c_he->cstats.rmt_hitm);
init_stats(&c2c_he->cstats.load);
return &c2c_he->he;
}
@ -122,6 +135,20 @@ static void c2c_he__set_cpu(struct c2c_hist_entry *c2c_he,
set_bit(sample->cpu, c2c_he->cpuset);
}
static void compute_stats(struct c2c_hist_entry *c2c_he,
struct c2c_stats *stats,
u64 weight)
{
struct compute_stats *cstats = &c2c_he->cstats;
if (stats->rmt_hitm)
update_stats(&cstats->rmt_hitm, weight);
else if (stats->lcl_hitm)
update_stats(&cstats->lcl_hitm, weight);
else if (stats->load)
update_stats(&cstats->load, weight);
}
static int process_sample_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample,
@ -200,6 +227,8 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused,
c2c_add_stats(&c2c_hists->stats, &stats);
c2c_add_stats(&c2c_he->node_stats[node], &stats);
compute_stats(c2c_he, &stats, sample->weight);
c2c_he__set_cpu(c2c_he, sample);
hists__inc_nr_samples(&c2c_hists->hists, he->filtered);
@ -962,6 +991,30 @@ node_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
return 0;
}
static int
mean_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
struct hist_entry *he, double mean)
{
int width = c2c_width(fmt, hpp, he->hists);
char buf[10];
scnprintf(buf, 10, "%6.0f", mean);
return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
}
#define MEAN_ENTRY(__func, __val) \
static int \
__func(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct hist_entry *he) \
{ \
struct c2c_hist_entry *c2c_he; \
c2c_he = container_of(he, struct c2c_hist_entry, he); \
return mean_entry(fmt, hpp, he, avg_stats(&c2c_he->cstats.__val)); \
}
MEAN_ENTRY(mean_rmt_entry, rmt_hitm);
MEAN_ENTRY(mean_lcl_entry, lcl_hitm);
MEAN_ENTRY(mean_load_entry, load);
#define HEADER_LOW(__h) \
{ \
.line[1] = { \
@ -1264,6 +1317,30 @@ static struct c2c_dimension dim_node = {
.width = 4,
};
static struct c2c_dimension dim_mean_rmt = {
.header = HEADER_SPAN("---------- cycles ----------", "rmt hitm", 2),
.name = "mean_rmt",
.cmp = empty_cmp,
.entry = mean_rmt_entry,
.width = 8,
};
static struct c2c_dimension dim_mean_lcl = {
.header = HEADER_SPAN_LOW("lcl hitm"),
.name = "mean_lcl",
.cmp = empty_cmp,
.entry = mean_lcl_entry,
.width = 8,
};
static struct c2c_dimension dim_mean_load = {
.header = HEADER_SPAN_LOW("load"),
.name = "mean_load",
.cmp = empty_cmp,
.entry = mean_load_entry,
.width = 8,
};
static struct c2c_dimension *dimensions[] = {
&dim_dcacheline,
&dim_offset,
@ -1298,6 +1375,9 @@ static struct c2c_dimension *dimensions[] = {
&dim_symbol,
&dim_dso,
&dim_node,
&dim_mean_rmt,
&dim_mean_lcl,
&dim_mean_load,
NULL,
};