From: Rob Herring <robh@kernel.org>
To: Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>, Mark Rutland <mark.rutland@arm.com>
Cc: Ian Rogers <irogers@google.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
honnappa.nagarahalli@arm.com, Zachary.Leaf@arm.com,
Raphael Gault <raphael.gault@arm.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Namhyung Kim <namhyung@kernel.org>,
Itaru Kitayama <itaru.kitayama@gmail.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v6 09/10] perf: arm64: Add tests for 32-bit and 64-bit counter size userspace access
Date: Wed, 10 Mar 2021 17:08:36 -0700 [thread overview]
Message-ID: <20210311000837.3630499-10-robh@kernel.org> (raw)
In-Reply-To: <20210311000837.3630499-1-robh@kernel.org>
Add arm64 specific tests for 32-bit and 64-bit counter user access. On
arm64, counters default to 32-bit unless attr.config1:0 is set to 1. In
order to enable user access for 64-bit counters, attr.config1 must be set
to 3.
Signed-off-by: Rob Herring <robh@kernel.org>
---
v6:
- New patch
---
tools/perf/arch/arm64/include/arch-tests.h | 5 +++
tools/perf/arch/arm64/tests/arch-tests.c | 8 +++++
tools/perf/arch/arm64/tests/user-events.c | 38 ++++++++++++++++++++++
3 files changed, 51 insertions(+)
diff --git a/tools/perf/arch/arm64/include/arch-tests.h b/tools/perf/arch/arm64/include/arch-tests.h
index 380ad34a3f09..ddfa7460e1e1 100644
--- a/tools/perf/arch/arm64/include/arch-tests.h
+++ b/tools/perf/arch/arm64/include/arch-tests.h
@@ -15,5 +15,10 @@ extern struct test arch_tests[];
int test__rd_pinned(struct test __maybe_unused *test,
int __maybe_unused subtest);
+int test__rd_64bit(struct test __maybe_unused *test,
+ int __maybe_unused subtest);
+
+int test__rd_32bit(struct test __maybe_unused *test,
+ int __maybe_unused subtest);
#endif
diff --git a/tools/perf/arch/arm64/tests/arch-tests.c b/tools/perf/arch/arm64/tests/arch-tests.c
index 80ce7bd3c16d..bbdb81aa3229 100644
--- a/tools/perf/arch/arm64/tests/arch-tests.c
+++ b/tools/perf/arch/arm64/tests/arch-tests.c
@@ -14,6 +14,14 @@ struct test arch_tests[] = {
.desc = "Pinned CPU user counter access",
.func = test__rd_pinned,
},
+ {
+ .desc = "User 64-bit counter access",
+ .func = test__rd_64bit,
+ },
+ {
+ .desc = "User 32-bit counter access",
+ .func = test__rd_32bit,
+ },
{
.func = NULL,
},
diff --git a/tools/perf/arch/arm64/tests/user-events.c b/tools/perf/arch/arm64/tests/user-events.c
index c8efc6b369e6..546323b5242c 100644
--- a/tools/perf/arch/arm64/tests/user-events.c
+++ b/tools/perf/arch/arm64/tests/user-events.c
@@ -175,3 +175,41 @@ int test__rd_pinned(struct test __maybe_unused *test,
perf_evsel__delete(evsel);
return ret;
}
+
+static int test__rd_counter_size(struct test __maybe_unused *test,
+ int config1)
+{
+ int ret;
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_INSTRUCTIONS,
+ .config1 = config1,
+ .exclude_kernel = 1,
+ };
+
+ if (!pmu_is_homogeneous())
+ return TEST_SKIP;
+
+ evsel = perf_init(&attr);
+ if (!evsel)
+ return -1;
+
+ ret = run_test(evsel);
+
+ perf_evsel__close(evsel);
+ perf_evsel__delete(evsel);
+ return ret;
+}
+
+int test__rd_64bit(struct test __maybe_unused *test,
+ int __maybe_unused subtest)
+{
+ return test__rd_counter_size(test, 0x3);
+}
+
+int test__rd_32bit(struct test __maybe_unused *test,
+ int __maybe_unused subtest)
+{
+ return test__rd_counter_size(test, 0x2);
+}
--
2.27.0
next prev parent reply other threads:[~2021-03-11 0:09 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-11 0:08 [PATCH v6 00/10] libperf and arm64 userspace counter access support Rob Herring
2021-03-11 0:08 ` [PATCH v6 01/10] arm64: pmu: Add function implementation to update event index in userpage Rob Herring
2021-03-30 15:30 ` Will Deacon
2021-03-11 0:08 ` [PATCH v6 02/10] arm64: perf: Enable PMU counter direct access for perf event Rob Herring
2021-03-30 11:30 ` Zachary Leaf
2021-03-30 15:31 ` Will Deacon
2021-03-30 17:09 ` Rob Herring
2021-03-30 21:08 ` Rob Herring
2021-03-31 15:38 ` Will Deacon
2021-03-31 17:52 ` Rob Herring
2021-04-01 9:04 ` Will Deacon
2021-03-31 16:00 ` Will Deacon
2021-04-01 19:45 ` Rob Herring
2021-04-07 12:44 ` Will Deacon
2021-04-08 11:08 ` Mark Rutland
2021-04-08 18:38 ` Rob Herring
2021-04-19 16:14 ` Will Deacon
2021-04-19 19:00 ` Rob Herring
2021-03-11 0:08 ` [PATCH v6 03/10] tools/include: Add an initial math64.h Rob Herring
2021-03-11 0:08 ` [PATCH v6 04/10] libperf: Add evsel mmap support Rob Herring
2021-03-12 13:58 ` Jiri Olsa
2021-03-12 14:34 ` Rob Herring
2021-03-12 18:29 ` Jiri Olsa
2021-03-31 22:06 ` Rob Herring
2021-03-11 0:08 ` [PATCH v6 05/10] libperf: tests: Add support for verbose printing Rob Herring
2021-03-11 0:08 ` [PATCH v6 06/10] libperf: Add support for user space counter access Rob Herring
2021-05-04 21:40 ` Ian Rogers
2021-05-05 2:12 ` Rob Herring
2021-03-11 0:08 ` [PATCH v6 07/10] libperf: Add arm64 support to perf_mmap__read_self() Rob Herring
2021-03-11 0:08 ` [PATCH v6 08/10] perf: arm64: Add test for userspace counter access on heterogeneous systems Rob Herring
2021-03-15 16:09 ` Masayoshi Mizuma
2021-03-11 0:08 ` Rob Herring [this message]
2021-03-11 0:08 ` [PATCH v6 10/10] Documentation: arm64: Document PMU counters access from userspace Rob Herring
2021-03-31 16:00 ` Will Deacon
2021-03-30 11:31 ` [PATCH v6 00/10] libperf and arm64 userspace counter access support Zachary Leaf
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