perf record: Create two hybrid 'cycles' events by default

When evlist is empty, for example no '-e' specified in perf record,
one default 'cycles' event is added to evlist.

While on hybrid platform, it needs to create two default 'cycles'
events. One is for cpu_core, the other is for cpu_atom.

This patch actually calls evsel__new_cycles() two times to create
two 'cycles' events.

  # ./perf record -vv -a -- sleep 1
  ...
  ------------------------------------------------------------
  perf_event_attr:
    size                             120
    config                           0x400000000
    { sample_period, sample_freq }   4000
    sample_type                      IP|TID|TIME|ID|CPU|PERIOD
    read_format                      ID
    disabled                         1
    inherit                          1
    freq                             1
    precise_ip                       3
    sample_id_all                    1
    exclude_guest                    1
  ------------------------------------------------------------
  sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 5
  sys_perf_event_open: pid -1  cpu 1  group_fd -1  flags 0x8 = 6
  sys_perf_event_open: pid -1  cpu 2  group_fd -1  flags 0x8 = 7
  sys_perf_event_open: pid -1  cpu 3  group_fd -1  flags 0x8 = 9
  sys_perf_event_open: pid -1  cpu 4  group_fd -1  flags 0x8 = 10
  sys_perf_event_open: pid -1  cpu 5  group_fd -1  flags 0x8 = 11
  sys_perf_event_open: pid -1  cpu 6  group_fd -1  flags 0x8 = 12
  sys_perf_event_open: pid -1  cpu 7  group_fd -1  flags 0x8 = 13
  sys_perf_event_open: pid -1  cpu 8  group_fd -1  flags 0x8 = 14
  sys_perf_event_open: pid -1  cpu 9  group_fd -1  flags 0x8 = 15
  sys_perf_event_open: pid -1  cpu 10  group_fd -1  flags 0x8 = 16
  sys_perf_event_open: pid -1  cpu 11  group_fd -1  flags 0x8 = 17
  sys_perf_event_open: pid -1  cpu 12  group_fd -1  flags 0x8 = 18
  sys_perf_event_open: pid -1  cpu 13  group_fd -1  flags 0x8 = 19
  sys_perf_event_open: pid -1  cpu 14  group_fd -1  flags 0x8 = 20
  sys_perf_event_open: pid -1  cpu 15  group_fd -1  flags 0x8 = 21
  ------------------------------------------------------------
  perf_event_attr:
    size                             120
    config                           0x800000000
    { sample_period, sample_freq }   4000
    sample_type                      IP|TID|TIME|ID|CPU|PERIOD
    read_format                      ID
    disabled                         1
    inherit                          1
    freq                             1
    precise_ip                       3
    sample_id_all                    1
    exclude_guest                    1
  ------------------------------------------------------------
  sys_perf_event_open: pid -1  cpu 16  group_fd -1  flags 0x8 = 22
  sys_perf_event_open: pid -1  cpu 17  group_fd -1  flags 0x8 = 23
  sys_perf_event_open: pid -1  cpu 18  group_fd -1  flags 0x8 = 24
  sys_perf_event_open: pid -1  cpu 19  group_fd -1  flags 0x8 = 25
  sys_perf_event_open: pid -1  cpu 20  group_fd -1  flags 0x8 = 26
  sys_perf_event_open: pid -1  cpu 21  group_fd -1  flags 0x8 = 27
  sys_perf_event_open: pid -1  cpu 22  group_fd -1  flags 0x8 = 28
  sys_perf_event_open: pid -1  cpu 23  group_fd -1  flags 0x8 = 29
  ------------------------------------------------------------

We have to create evlist-hybrid.c otherwise due to the symbol
dependency the perf test python would be failed.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
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/20210427070139.25256-14-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 5fb9665..6af46c6 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -47,6 +47,8 @@
 #include "util/util.h"
 #include "util/pfm.h"
 #include "util/clockid.h"
+#include "util/pmu-hybrid.h"
+#include "util/evlist-hybrid.h"
 #include "asm/bug.h"
 #include "perf.h"
 
@@ -2790,10 +2792,19 @@ int cmd_record(int argc, const char **argv)
        if (record.opts.overwrite)
                record.opts.tail_synthesize = true;
 
-       if (rec->evlist->core.nr_entries == 0 &&
-           __evlist__add_default(rec->evlist, !record.opts.no_samples) < 0) {
-               pr_err("Not enough memory for event selector list\n");
-               goto out;
+       if (rec->evlist->core.nr_entries == 0) {
+               if (perf_pmu__has_hybrid()) {
+                       err = evlist__add_default_hybrid(rec->evlist,
+                                                        !record.opts.no_samples);
+               } else {
+                       err = __evlist__add_default(rec->evlist,
+                                                   !record.opts.no_samples);
+               }
+
+               if (err < 0) {
+                       pr_err("Not enough memory for event selector list\n");
+                       goto out;
+               }
        }
 
        if (rec->opts.target.tid && !rec->opts.no_inherit_set)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 34fcbf3..8c0d9f3 100644 (file)
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -10,6 +10,7 @@ perf-y += db-export.o
 perf-y += env.o
 perf-y += event.o
 perf-y += evlist.o
+perf-y += evlist-hybrid.o
 perf-y += sideband_evlist.o
 perf-y += evsel.o
 perf-y += evsel_fprintf.o

diff --git a/tools/perf/util/evlist-hybrid.c b/tools/perf/util/evlist-hybrid.c
new file mode 100644 (file)
index 0000000..e119985
--- /dev/null
+++ b/tools/perf/util/evlist-hybrid.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <errno.h>
+#include <inttypes.h>
+#include "cpumap.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "../perf.h"
+#include "util/pmu-hybrid.h"
+#include "util/evlist-hybrid.h"
+#include <unistd.h>
+#include <stdlib.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <perf/evlist.h>
+#include <perf/evsel.h>
+#include <perf/cpumap.h>
+
+int evlist__add_default_hybrid(struct evlist *evlist, bool precise)
+{
+       struct evsel *evsel;
+       struct perf_pmu *pmu;
+       __u64 config;
+       struct perf_cpu_map *cpus;
+
+       perf_pmu__for_each_hybrid_pmu(pmu) {
+               config = PERF_COUNT_HW_CPU_CYCLES |
+                        ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT);
+               evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
+                                         config);
+               if (!evsel)
+                       return -ENOMEM;
+
+               cpus = perf_cpu_map__get(pmu->cpus);
+               evsel->core.cpus = cpus;
+               evsel->core.own_cpus = perf_cpu_map__get(cpus);
+               evsel->pmu_name = strdup(pmu->name);
+               evlist__add(evlist, evsel);
+       }
+
+       return 0;
+}

diff --git a/tools/perf/util/evlist-hybrid.h b/tools/perf/util/evlist-hybrid.h
new file mode 100644 (file)
index 0000000..e258616
--- /dev/null
+++ b/tools/perf/util/evlist-hybrid.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PERF_EVLIST_HYBRID_H
+#define __PERF_EVLIST_HYBRID_H
+
+#include <linux/compiler.h>
+#include <linux/kernel.h>
+#include "evlist.h"
+#include <unistd.h>
+
+int evlist__add_default_hybrid(struct evlist *evlist, bool precise);
+
+#endif /* __PERF_EVLIST_HYBRID_H */

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index e71041c..6e5c415 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -26,6 +26,7 @@
 #include "util/string2.h"
 #include "util/perf_api_probe.h"
 #include "util/evsel_fprintf.h"
+#include "util/evlist-hybrid.h"
 #include <signal.h>
 #include <unistd.h>
 #include <sched.h>
@@ -248,8 +249,10 @@ void evlist__set_leader(struct evlist *evlist)
 
 int __evlist__add_default(struct evlist *evlist, bool precise)
 {
-       struct evsel *evsel = evsel__new_cycles(precise);
+       struct evsel *evsel;
 
+       evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
+                                 PERF_COUNT_HW_CPU_CYCLES);
        if (evsel == NULL)
                return -ENOMEM;
 

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 080ddcf..0fc9555 100644 (file)
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -295,11 +295,11 @@ static bool perf_event_can_profile_kernel(void)
        return perf_event_paranoid_check(1);
 }
 
-struct evsel *evsel__new_cycles(bool precise)
+struct evsel *evsel__new_cycles(bool precise, __u32 type, __u64 config)
 {
        struct perf_event_attr attr = {
-               .type   = PERF_TYPE_HARDWARE,
-               .config = PERF_COUNT_HW_CPU_CYCLES,
+               .type   = type,
+               .config = config,
                .exclude_kernel = !perf_event_can_profile_kernel(),
        };
        struct evsel *evsel;

diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index ad74c83..a9cc956 100644 (file)
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -221,7 +221,7 @@ static inline struct evsel *evsel__newtp(const char *sys, const char *name)
        return evsel__newtp_idx(sys, name, 0);
 }
 
-struct evsel *evsel__new_cycles(bool precise);
+struct evsel *evsel__new_cycles(bool precise, __u32 type, __u64 config);
 
 struct tep_event *event_format__new(const char *sys, const char *name);