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: 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 v7 8/9] perf: arm64: Add tests for 32-bit and 64-bit counter size userspace access Date: Mon, 19 Apr 2021 22:15:10 -0500 [thread overview] Message-ID: <20210420031511.2348977-9-robh@kernel.org> (raw) In-Reply-To: <20210420031511.2348977-1-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
WARNING: multiple messages have this Message-ID (diff)
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: 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 v7 8/9] perf: arm64: Add tests for 32-bit and 64-bit counter size userspace access Date: Mon, 19 Apr 2021 22:15:10 -0500 [thread overview] Message-ID: <20210420031511.2348977-9-robh@kernel.org> (raw) In-Reply-To: <20210420031511.2348977-1-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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-04-20 3:15 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-20 3:15 [PATCH v7 0/9] arm64 userspace counter access support Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 1/9] arm64: Restrict undef hook for cpufeature registers Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 2/9] arm64: pmu: Add function implementation to update event index in userpage Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 3/9] arm64: perf: Enable PMU counter direct access for perf event Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 4/9] drivers/perf: arm_pmu: Export the per_cpu cpu_armpmu Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 5/9] arm64: perf: Add userspace counter access disable switch Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 6/9] libperf: Add arm64 support to perf_mmap__read_self() Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-20 3:15 ` [PATCH v7 7/9] perf: arm64: Add test for userspace counter access on heterogeneous systems Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-30 16:46 ` Masayoshi Mizuma 2021-04-30 16:46 ` Masayoshi Mizuma 2021-04-30 18:17 ` Rob Herring 2021-04-30 18:17 ` Rob Herring 2021-04-30 18:20 ` Rob Herring 2021-04-30 18:20 ` Rob Herring 2021-04-30 20:16 ` Masayoshi Mizuma 2021-04-30 20:16 ` Masayoshi Mizuma 2021-05-13 9:05 ` nakamura.shun 2021-05-13 9:05 ` nakamura.shun 2021-05-13 12:37 ` Rob Herring 2021-05-13 12:37 ` Rob Herring 2021-04-20 3:15 ` Rob Herring [this message] 2021-04-20 3:15 ` [PATCH v7 8/9] perf: arm64: Add tests for 32-bit and 64-bit counter size userspace access Rob Herring 2021-04-20 3:15 ` [PATCH v7 9/9] Documentation: arm64: Document PMU counters access from userspace Rob Herring 2021-04-20 3:15 ` Rob Herring 2021-04-30 18:59 ` [PATCH v7 0/9] arm64 userspace counter access support Arnaldo Carvalho de Melo 2021-04-30 18:59 ` Arnaldo Carvalho de Melo 2021-05-03 14:56 ` Rob Herring 2021-05-03 14:56 ` Rob Herring
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