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perf c2c: Support record for hybrid platform 

Support 'perf c2c record' for hybrid platform. On hybrid platform,
such as Alderlake, when executing 'perf c2c record', it actually calls:

record -W -d --phys-data --sample-cpu
-e {cpu_core/mem-loads-aux/,cpu_core/mem-loads,ldlat=30/}:P
-e cpu_atom/mem-loads,ldlat=30/P
-e cpu_core/mem-stores/P
-e cpu_atom/mem-stores/P

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210527001610.10553-9-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao 2021-05-27 08:16:10 +08:00 committed by Arnaldo Carvalho de Melo
parent d5a8bd0fcd
commit 79e157b008
1 changed files with 23 additions and 17 deletions
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40
tools/perf/builtin-c2c.c
View File

@ -42,6 +42,8 @@
#include "ui/ui.h"
#include "ui/progress.h"
#include "../perf.h"
#include "pmu.h"
#include "pmu-hybrid.h"
struct c2c_hists {
struct hists hists;
@ -2907,8 +2909,9 @@ static const char * const *record_mem_usage = __usage_record;
static int perf_c2c__record(int argc, const char **argv)
{
int rec_argc, i = 0, j;
int rec_argc, i = 0, j, rec_tmp_nr = 0;
const char **rec_argv;
char **rec_tmp;
int ret;
bool all_user = false, all_kernel = false;
bool event_set = false;
@ -2932,11 +2935,21 @@ static int perf_c2c__record(int argc, const char **argv)
argc = parse_options(argc, argv, options, record_mem_usage,
PARSE_OPT_KEEP_UNKNOWN);
rec_argc = argc + 11; /* max number of arguments */
if (!perf_pmu__has_hybrid())
rec_argc = argc + 11; /* max number of arguments */
else
rec_argc = argc + 11 * perf_pmu__hybrid_pmu_num();
rec_argv = calloc(rec_argc + 1, sizeof(char *));
if (!rec_argv)
return -1;
rec_tmp = calloc(rec_argc + 1, sizeof(char *));
if (!rec_tmp) {
free(rec_argv);
return -1;
}
rec_argv[i++] = "record";
if (!event_set) {
@ -2964,21 +2977,9 @@ static int perf_c2c__record(int argc, const char **argv)
rec_argv[i++] = "--phys-data";
rec_argv[i++] = "--sample-cpu";
for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
e = perf_mem_events__ptr(j);
if (!e->record)
continue;
if (!e->supported) {
pr_err("failed: event '%s' not supported\n",
perf_mem_events__name(j, NULL));
free(rec_argv);
return -1;
}
rec_argv[i++] = "-e";
rec_argv[i++] = perf_mem_events__name(j, NULL);
}
ret = perf_mem_events__record_args(rec_argv, &i, rec_tmp, &rec_tmp_nr);
if (ret)
goto out;
if (all_user)
rec_argv[i++] = "--all-user";
@ -3002,6 +3003,11 @@ static int perf_c2c__record(int argc, const char **argv)
}
ret = cmd_record(i, rec_argv);
out:
for (i = 0; i < rec_tmp_nr; i++)
free(rec_tmp[i]);
free(rec_tmp);
free(rec_argv);
return ret;
}