Commit c5079997 authored by Stanislav Fomichev's avatar Stanislav Fomichev Committed by Arnaldo Carvalho de Melo

perf timechart: Add support for topology

Add -t switch to sort CPUs topologically.
Signed-off-by: default avatarStanislav Fomichev <stfomichev@yandex-team.ru>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ramkumar Ramachandra <artagnon@gmail.com>
Link: http://lkml.kernel.org/r/1385995056-20158-5-git-send-email-stfomichev@yandex-team.ruSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 58b9a18e
......@@ -59,6 +59,9 @@ $ perf timechart
-n::
--proc-num::
Print task info for at least given number of tasks.
-t::
--topology::
Sort CPUs according to topology.
RECORD OPTIONS
--------------
......
......@@ -58,7 +58,8 @@ struct timechart {
first_time, last_time;
bool power_only,
tasks_only,
with_backtrace;
with_backtrace,
topology;
};
struct per_pidcomm;
......@@ -1077,6 +1078,18 @@ static int process_header(struct perf_file_section *section __maybe_unused,
case HEADER_NRCPUS:
tchart->numcpus = ph->env.nr_cpus_avail;
break;
case HEADER_CPU_TOPOLOGY:
if (!tchart->topology)
break;
if (svg_build_topology_map(ph->env.sibling_cores,
ph->env.nr_sibling_cores,
ph->env.sibling_threads,
ph->env.nr_sibling_threads))
fprintf(stderr, "problem building topology\n");
break;
default:
break;
}
......@@ -1267,6 +1280,8 @@ int cmd_timechart(int argc, const char **argv,
"Look for files with symbols relative to this directory"),
OPT_INTEGER('n', "proc-num", &tchart.proc_num,
"min. number of tasks to print"),
OPT_BOOLEAN('t', "topology", &tchart.topology,
"sort CPUs according to topology"),
OPT_END()
};
const char * const timechart_usage[] = {
......
......@@ -17,8 +17,11 @@
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <linux/bitops.h>
#include "perf.h"
#include "svghelper.h"
#include "cpumap.h"
static u64 first_time, last_time;
static u64 turbo_frequency, max_freq;
......@@ -39,9 +42,14 @@ static double cpu2slot(int cpu)
return 2 * cpu + 1;
}
static int *topology_map;
static double cpu2y(int cpu)
{
return cpu2slot(cpu) * SLOT_MULT;
if (topology_map)
return cpu2slot(topology_map[cpu]) * SLOT_MULT;
else
return cpu2slot(cpu) * SLOT_MULT;
}
static double time2pixels(u64 __time)
......@@ -275,7 +283,7 @@ void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
time2pixels(last_time)-time2pixels(first_time),
cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
sprintf(cpu_string, "CPU %i", (int)cpu+1);
sprintf(cpu_string, "CPU %i", (int)cpu);
fprintf(svgfile, "<text x=\"%4.8f\" y=\"%4.8f\">%s</text>\n",
10+time2pixels(first_time), cpu2y(cpu) + SLOT_HEIGHT/2, cpu_string);
......@@ -568,3 +576,123 @@ void svg_close(void)
svgfile = NULL;
}
}
#define cpumask_bits(maskp) ((maskp)->bits)
typedef struct { DECLARE_BITMAP(bits, MAX_NR_CPUS); } cpumask_t;
struct topology {
cpumask_t *sib_core;
int sib_core_nr;
cpumask_t *sib_thr;
int sib_thr_nr;
};
static void scan_thread_topology(int *map, struct topology *t, int cpu, int *pos)
{
int i;
int thr;
for (i = 0; i < t->sib_thr_nr; i++) {
if (!test_bit(cpu, cpumask_bits(&t->sib_thr[i])))
continue;
for_each_set_bit(thr,
cpumask_bits(&t->sib_thr[i]),
MAX_NR_CPUS)
if (map[thr] == -1)
map[thr] = (*pos)++;
}
}
static void scan_core_topology(int *map, struct topology *t)
{
int pos = 0;
int i;
int cpu;
for (i = 0; i < t->sib_core_nr; i++)
for_each_set_bit(cpu,
cpumask_bits(&t->sib_core[i]),
MAX_NR_CPUS)
scan_thread_topology(map, t, cpu, &pos);
}
static int str_to_bitmap(char *s, cpumask_t *b)
{
int i;
int ret = 0;
struct cpu_map *m;
int c;
m = cpu_map__new(s);
if (!m)
return -1;
for (i = 0; i < m->nr; i++) {
c = m->map[i];
if (c >= MAX_NR_CPUS) {
ret = -1;
break;
}
set_bit(c, cpumask_bits(b));
}
cpu_map__delete(m);
return ret;
}
int svg_build_topology_map(char *sib_core, int sib_core_nr,
char *sib_thr, int sib_thr_nr)
{
int i;
struct topology t;
t.sib_core_nr = sib_core_nr;
t.sib_thr_nr = sib_thr_nr;
t.sib_core = calloc(sib_core_nr, sizeof(cpumask_t));
t.sib_thr = calloc(sib_thr_nr, sizeof(cpumask_t));
if (!t.sib_core || !t.sib_thr) {
fprintf(stderr, "topology: no memory\n");
goto exit;
}
for (i = 0; i < sib_core_nr; i++) {
if (str_to_bitmap(sib_core, &t.sib_core[i])) {
fprintf(stderr, "topology: can't parse siblings map\n");
goto exit;
}
sib_core += strlen(sib_core) + 1;
}
for (i = 0; i < sib_thr_nr; i++) {
if (str_to_bitmap(sib_thr, &t.sib_thr[i])) {
fprintf(stderr, "topology: can't parse siblings map\n");
goto exit;
}
sib_thr += strlen(sib_thr) + 1;
}
topology_map = malloc(sizeof(int) * MAX_NR_CPUS);
if (!topology_map) {
fprintf(stderr, "topology: no memory\n");
goto exit;
}
for (i = 0; i < MAX_NR_CPUS; i++)
topology_map[i] = -1;
scan_core_topology(topology_map, &t);
return 0;
exit:
free(t.sib_core);
free(t.sib_thr);
return -1;
}
......@@ -23,6 +23,8 @@ extern void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, cha
extern void svg_interrupt(u64 start, int row, const char *backtrace);
extern void svg_text(int Yslot, u64 start, const char *text);
extern void svg_close(void);
extern int svg_build_topology_map(char *sib_core, int sib_core_nr,
char *sib_thr, int sib_thr_nr);
extern int svg_page_width;
......
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