| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20250914181121.1952748-21-irogers@google.com>
Date: Sun, 14 Sep 2025 11:11:20 -0700
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>,
Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>,
Kan Liang <kan.liang@...ux.intel.com>, James Clark <james.clark@...aro.org>,
Xu Yang <xu.yang_2@....com>, Thomas Falcon <thomas.falcon@...el.com>,
Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
linux-perf-users@...r.kernel.org, bpf@...r.kernel.org,
Atish Patra <atishp@...osinc.com>, Beeman Strong <beeman@...osinc.com>, Leo Yan <leo.yan@....com>,
Vince Weaver <vincent.weaver@...ne.edu>
Subject: [PATCH v4 20/21] perf parse-events: Add HW_CYCLES_STR as default
cycles event string
ARM managed to significantly overload the meaning of the "cycles"
event in their PMU kernel drivers through sysfs. In the tool use
"cpu-cycles" on ARM to avoid wildcard matching on different PMUS. This
is most commonly done in test code.
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/builtin-stat.c | 4 +-
tools/perf/tests/code-reading.c | 4 +-
tools/perf/tests/keep-tracking.c | 2 +-
tools/perf/tests/parse-events.c | 100 ++++++++++++++--------------
tools/perf/tests/perf-time-to-tsc.c | 2 +-
tools/perf/tests/switch-tracking.c | 2 +-
tools/perf/util/evlist.c | 2 +-
tools/perf/util/parse-events.h | 10 +++
tools/perf/util/perf_api_probe.c | 4 +-
9 files changed, 71 insertions(+), 59 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 2c38dd98f6ca..9f522b787ad5 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1957,7 +1957,7 @@ static int add_default_events(void)
"cpu-migrations,"
"page-faults,"
"instructions,"
- "cycles,"
+ HW_CYCLES_STR ","
"stalled-cycles-frontend,"
"stalled-cycles-backend,"
"branches,"
@@ -2043,7 +2043,7 @@ static int add_default_events(void)
* Make at least one event non-skippable so fatal errors are visible.
* 'cycles' always used to be default and non-skippable, so use that.
*/
- if (strcmp("cycles", evsel__name(evsel)))
+ if (strcmp(HW_CYCLES_STR, evsel__name(evsel)))
evsel->skippable = true;
}
}
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 9c2091310191..baa44918f555 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -649,7 +649,9 @@ static int do_test_code_reading(bool try_kcore)
struct map *map;
bool have_vmlinux, have_kcore;
struct dso *dso;
- const char *events[] = { "cycles", "cycles:u", "cpu-clock", "cpu-clock:u", NULL };
+ const char *events[] = {
+ HW_CYCLES_STR, HW_CYCLES_STR ":u", "cpu-clock", "cpu-clock:u", NULL
+ };
int evidx = 0;
struct perf_env host_env;
diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c
index eafb49eb0b56..d54ddb4db47b 100644
--- a/tools/perf/tests/keep-tracking.c
+++ b/tools/perf/tests/keep-tracking.c
@@ -90,7 +90,7 @@ static int test__keep_tracking(struct test_suite *test __maybe_unused, int subte
perf_evlist__set_maps(&evlist->core, cpus, threads);
CHECK__(parse_event(evlist, "dummy:u"));
- CHECK__(parse_event(evlist, "cycles:u"));
+ CHECK__(parse_event(evlist, HW_CYCLES_STR ":u"));
evlist__config(evlist, &opts, NULL);
diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 4e55b0d295bd..7d59648a0591 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -198,7 +198,7 @@ static int test__checkevent_symbolic_name_config(struct evlist *evlist)
TEST_ASSERT_VAL("wrong number of entries", 0 != evlist->core.nr_entries);
perf_evlist__for_each_evsel(&evlist->core, evsel) {
- int ret = assert_hw(evsel, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ int ret = assert_hw(evsel, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -884,7 +884,7 @@ static int test__group1(struct evlist *evlist)
/* cycles:upp */
evsel = evsel__next(evsel);
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -948,7 +948,7 @@ static int test__group2(struct evlist *evlist)
continue;
}
/* cycles:k */
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1085,7 +1085,7 @@ static int test__group4(struct evlist *evlist __maybe_unused)
/* cycles:u + p */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1133,7 +1133,7 @@ static int test__group5(struct evlist *evlist __maybe_unused)
for (int i = 0; i < num_core_entries(); i++) {
/* cycles + G */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1168,7 +1168,7 @@ static int test__group5(struct evlist *evlist __maybe_unused)
for (int i = 0; i < num_core_entries(); i++) {
/* cycles:G */
evsel = leader = evsel__next(evsel);
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1202,7 +1202,7 @@ static int test__group5(struct evlist *evlist __maybe_unused)
for (int i = 0; i < num_core_entries(); i++) {
/* cycles */
evsel = evsel__next(evsel);
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1231,7 +1231,7 @@ static int test__group_gh1(struct evlist *evlist)
/* cycles + :H group modifier */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1278,7 +1278,7 @@ static int test__group_gh2(struct evlist *evlist)
/* cycles + :G group modifier */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1325,7 +1325,7 @@ static int test__group_gh3(struct evlist *evlist)
/* cycles:G + :u group modifier */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1372,7 +1372,7 @@ static int test__group_gh4(struct evlist *evlist)
/* cycles:G + :uG group modifier */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1417,7 +1417,7 @@ static int test__leader_sample1(struct evlist *evlist)
/* cycles - sampling group leader */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1540,7 +1540,7 @@ static int test__pinned_group(struct evlist *evlist)
/* cycles - group leader */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1594,7 +1594,7 @@ static int test__exclusive_group(struct evlist *evlist)
/* cycles - group leader */
evsel = leader = (i == 0 ? evlist__first(evlist) : evsel__next(evsel));
- ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1759,7 +1759,7 @@ static int test__checkevent_raw_pmu(struct evlist *evlist)
static int test__sym_event_slash(struct evlist *evlist)
{
struct evsel *evsel = evlist__first(evlist);
- int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1771,7 +1771,7 @@ static int test__sym_event_slash(struct evlist *evlist)
static int test__sym_event_dc(struct evlist *evlist)
{
struct evsel *evsel = evlist__first(evlist);
- int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1783,7 +1783,7 @@ static int test__sym_event_dc(struct evlist *evlist)
static int test__term_equal_term(struct evlist *evlist)
{
struct evsel *evsel = evlist__first(evlist);
- int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -1795,7 +1795,7 @@ static int test__term_equal_term(struct evlist *evlist)
static int test__term_equal_legacy(struct evlist *evlist)
{
struct evsel *evsel = evlist__first(evlist);
- int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, "cycles");
+ int ret = assert_hw(&evsel->core, PERF_COUNT_HW_CPU_CYCLES, HW_CYCLES_STR);
if (ret)
return ret;
@@ -2006,27 +2006,27 @@ static const struct evlist_test test__events[] = {
/* 7 */
},
{
- .name = "{instructions:k,cycles:upp}",
+ .name = "{instructions:k," HW_CYCLES_STR ":upp}",
.check = test__group1,
/* 8 */
},
{
- .name = "{faults:k,branches}:u,cycles:k",
+ .name = "{faults:k,branches}:u," HW_CYCLES_STR ":k",
.check = test__group2,
/* 9 */
},
{
- .name = "group1{syscalls:sys_enter_openat:H,cycles:kppp},group2{cycles,1:3}:G,instructions:u",
+ .name = "group1{syscalls:sys_enter_openat:H," HW_CYCLES_STR ":kppp},group2{" HW_CYCLES_STR ",1:3}:G,instructions:u",
.check = test__group3,
/* 0 */
},
{
- .name = "{cycles:u,instructions:kp}:p",
+ .name = "{" HW_CYCLES_STR ":u,instructions:kp}:p",
.check = test__group4,
/* 1 */
},
{
- .name = "{cycles,instructions}:G,{cycles:G,instructions:G},cycles",
+ .name = "{" HW_CYCLES_STR ",instructions}:G,{" HW_CYCLES_STR ":G,instructions:G}," HW_CYCLES_STR,
.check = test__group5,
/* 2 */
},
@@ -2036,27 +2036,27 @@ static const struct evlist_test test__events[] = {
/* 3 */
},
{
- .name = "{cycles,cache-misses:G}:H",
+ .name = "{" HW_CYCLES_STR ",cache-misses:G}:H",
.check = test__group_gh1,
/* 4 */
},
{
- .name = "{cycles,cache-misses:H}:G",
+ .name = "{" HW_CYCLES_STR ",cache-misses:H}:G",
.check = test__group_gh2,
/* 5 */
},
{
- .name = "{cycles:G,cache-misses:H}:u",
+ .name = "{" HW_CYCLES_STR ":G,cache-misses:H}:u",
.check = test__group_gh3,
/* 6 */
},
{
- .name = "{cycles:G,cache-misses:H}:uG",
+ .name = "{" HW_CYCLES_STR ":G,cache-misses:H}:uG",
.check = test__group_gh4,
/* 7 */
},
{
- .name = "{cycles,cache-misses,branch-misses}:S",
+ .name = "{" HW_CYCLES_STR ",cache-misses,branch-misses}:S",
.check = test__leader_sample1,
/* 8 */
},
@@ -2071,7 +2071,7 @@ static const struct evlist_test test__events[] = {
/* 0 */
},
{
- .name = "{cycles,cache-misses,branch-misses}:D",
+ .name = "{" HW_CYCLES_STR ",cache-misses,branch-misses}:D",
.check = test__pinned_group,
/* 1 */
},
@@ -2109,7 +2109,7 @@ static const struct evlist_test test__events[] = {
/* 6 */
},
{
- .name = "task-clock:P,cycles",
+ .name = "task-clock:P," HW_CYCLES_STR,
.check = test__checkevent_precise_max_modifier,
/* 7 */
},
@@ -2140,17 +2140,17 @@ static const struct evlist_test test__events[] = {
/* 2 */
},
{
- .name = "cycles/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks'/Duk",
+ .name = HW_CYCLES_STR "/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks'/Duk",
.check = test__checkevent_complex_name,
/* 3 */
},
{
- .name = "cycles//u",
+ .name = HW_CYCLES_STR "//u",
.check = test__sym_event_slash,
/* 4 */
},
{
- .name = "cycles:k",
+ .name = HW_CYCLES_STR ":k",
.check = test__sym_event_dc,
/* 5 */
},
@@ -2160,17 +2160,17 @@ static const struct evlist_test test__events[] = {
/* 6 */
},
{
- .name = "{cycles,cache-misses,branch-misses}:e",
+ .name = "{" HW_CYCLES_STR ",cache-misses,branch-misses}:e",
.check = test__exclusive_group,
/* 7 */
},
{
- .name = "cycles/name=name/",
+ .name = HW_CYCLES_STR "/name=name/",
.check = test__term_equal_term,
/* 8 */
},
{
- .name = "cycles/name=l1d/",
+ .name = HW_CYCLES_STR "/name=l1d/",
.check = test__term_equal_legacy,
/* 9 */
},
@@ -2311,7 +2311,7 @@ static const struct evlist_test test__events_pmu[] = {
/* 9 */
},
{
- .name = "cpu/cycles,period=100000,config2/",
+ .name = "cpu/" HW_CYCLES_STR ",period=100000,config2/",
.valid = test__pmu_cpu_valid,
.check = test__checkevent_symbolic_name_config,
/* 0 */
@@ -2335,43 +2335,43 @@ static const struct evlist_test test__events_pmu[] = {
/* 3 */
},
{
- .name = "{cpu/instructions/k,cpu/cycles/upp}",
+ .name = "{cpu/instructions/k,cpu/" HW_CYCLES_STR "/upp}",
.valid = test__pmu_cpu_valid,
.check = test__group1,
/* 4 */
},
{
- .name = "{cpu/cycles/u,cpu/instructions/kp}:p",
+ .name = "{cpu/" HW_CYCLES_STR "/u,cpu/instructions/kp}:p",
.valid = test__pmu_cpu_valid,
.check = test__group4,
/* 5 */
},
{
- .name = "{cpu/cycles/,cpu/cache-misses/G}:H",
+ .name = "{cpu/" HW_CYCLES_STR "/,cpu/cache-misses/G}:H",
.valid = test__pmu_cpu_valid,
.check = test__group_gh1,
/* 6 */
},
{
- .name = "{cpu/cycles/,cpu/cache-misses/H}:G",
+ .name = "{cpu/" HW_CYCLES_STR "/,cpu/cache-misses/H}:G",
.valid = test__pmu_cpu_valid,
.check = test__group_gh2,
/* 7 */
},
{
- .name = "{cpu/cycles/G,cpu/cache-misses/H}:u",
+ .name = "{cpu/" HW_CYCLES_STR "/G,cpu/cache-misses/H}:u",
.valid = test__pmu_cpu_valid,
.check = test__group_gh3,
/* 8 */
},
{
- .name = "{cpu/cycles/G,cpu/cache-misses/H}:uG",
+ .name = "{cpu/" HW_CYCLES_STR "/G,cpu/cache-misses/H}:uG",
.valid = test__pmu_cpu_valid,
.check = test__group_gh4,
/* 9 */
},
{
- .name = "{cpu/cycles/,cpu/cache-misses/,cpu/branch-misses/}:S",
+ .name = "{cpu/" HW_CYCLES_STR "/,cpu/cache-misses/,cpu/branch-misses/}:S",
.valid = test__pmu_cpu_valid,
.check = test__leader_sample1,
/* 0 */
@@ -2389,7 +2389,7 @@ static const struct evlist_test test__events_pmu[] = {
/* 2 */
},
{
- .name = "{cpu/cycles/,cpu/cache-misses/,cpu/branch-misses/}:D",
+ .name = "{cpu/" HW_CYCLES_STR "/,cpu/cache-misses/,cpu/branch-misses/}:D",
.valid = test__pmu_cpu_valid,
.check = test__pinned_group,
/* 3 */
@@ -2407,13 +2407,13 @@ static const struct evlist_test test__events_pmu[] = {
/* 5 */
},
{
- .name = "cpu/cycles/u",
+ .name = "cpu/" HW_CYCLES_STR "/u",
.valid = test__pmu_cpu_valid,
.check = test__sym_event_slash,
/* 6 */
},
{
- .name = "cpu/cycles/k",
+ .name = "cpu/" HW_CYCLES_STR "/k",
.valid = test__pmu_cpu_valid,
.check = test__sym_event_dc,
/* 7 */
@@ -2425,19 +2425,19 @@ static const struct evlist_test test__events_pmu[] = {
/* 8 */
},
{
- .name = "{cpu/cycles/,cpu/cache-misses/,cpu/branch-misses/}:e",
+ .name = "{cpu/" HW_CYCLES_STR "/,cpu/cache-misses/,cpu/branch-misses/}:e",
.valid = test__pmu_cpu_valid,
.check = test__exclusive_group,
/* 9 */
},
{
- .name = "cpu/cycles,name=name/",
+ .name = "cpu/" HW_CYCLES_STR ",name=name/",
.valid = test__pmu_cpu_valid,
.check = test__term_equal_term,
/* 0 */
},
{
- .name = "cpu/cycles,name=l1d/",
+ .name = "cpu/" HW_CYCLES_STR ",name=l1d/",
.valid = test__pmu_cpu_valid,
.check = test__term_equal_legacy,
/* 1 */
diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c
index d4437410c99f..7ebcb1f004b2 100644
--- a/tools/perf/tests/perf-time-to-tsc.c
+++ b/tools/perf/tests/perf-time-to-tsc.c
@@ -101,7 +101,7 @@ static int test__perf_time_to_tsc(struct test_suite *test __maybe_unused, int su
perf_evlist__set_maps(&evlist->core, cpus, threads);
- CHECK__(parse_event(evlist, "cycles:u"));
+ CHECK__(parse_event(evlist, HW_CYCLES_STR ":u"));
evlist__config(evlist, &opts, NULL);
diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c
index 5be294014d3b..ad3a87978c0d 100644
--- a/tools/perf/tests/switch-tracking.c
+++ b/tools/perf/tests/switch-tracking.c
@@ -332,7 +332,7 @@ static int process_events(struct evlist *evlist,
static int test__switch_tracking(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
{
const char *sched_switch = "sched:sched_switch";
- const char *cycles = "cycles:u";
+ const char *cycles = HW_CYCLES_STR ":u";
struct switch_tracking switch_tracking = { .tids = NULL, };
struct record_opts opts = {
.mmap_pages = UINT_MAX,
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index e8217efdda53..d7e935faeda0 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -112,7 +112,7 @@ struct evlist *evlist__new_default(void)
char buf[256];
int err;
- snprintf(buf, sizeof(buf), "%s/cycles/%s", pmu->name,
+ snprintf(buf, sizeof(buf), "%s/%s/%s", pmu->name, HW_CYCLES_STR,
can_profile_kernel ? "P" : "Pu");
err = parse_event(evlist, buf);
if (err) {
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index db92cd67bc0f..304676bf32dd 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -20,6 +20,16 @@ struct option;
struct perf_pmu;
struct strbuf;
+/*
+ * The name used for the "cycles" event. A different event name is used on ARM
+ * as many ARM PMUs define a "cycles" event.
+ */
+#if defined(__aarch64__) || defined(__arm__)
+#define HW_CYCLES_STR "cpu-cycles"
+#else
+#define HW_CYCLES_STR "cycles"
+#endif
+
const char *event_type(size_t type);
/* Arguments encoded in opt->value. */
diff --git a/tools/perf/util/perf_api_probe.c b/tools/perf/util/perf_api_probe.c
index 6ecf38314f01..693bb5891bc4 100644
--- a/tools/perf/util/perf_api_probe.c
+++ b/tools/perf/util/perf_api_probe.c
@@ -74,9 +74,9 @@ static bool perf_probe_api(setup_probe_fn_t fn)
if (!ret)
return true;
- pmu = perf_pmus__scan_core(/*pmu=*/NULL);
+ pmu = perf_pmus__find_core_pmu();
if (pmu) {
- const char *try[] = {"cycles", "instructions", NULL};
+ const char *try[] = {HW_CYCLES_STR, "instructions", NULL};
char buf[256];
int i = 0;
--
2.51.0.384.g4c02a37b29-goog
Powered by blists - more mailing lists