From: Jing Zhang <renyu.zj@linux.alibaba.com>
To: Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Jonathan Corbet <corbet@lwn.net>,
John Garry <john.g.garry@oracle.com>,
Shuai Xue <xueshuai@linux.alibaba.com>,
Ian Rogers <irogers@google.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
James Clark <james.clark@arm.com>,
Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>,
Ilkka Koskinen <ilkka@os.amperecomputing.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-perf-users@vger.kernel.org, linux-doc@vger.kernel.org,
Zhuo Song <zhuo.song@linux.alibaba.com>,
Jing Zhang <renyu.zj@linux.alibaba.com>
Subject: [PATCH v4 1/4] driver/perf: Add identifier sysfs file for Yitian 710 DDR
Date: Tue, 20 Jun 2023 15:12:33 +0800 [thread overview]
Message-ID: <1687245156-61215-2-git-send-email-renyu.zj@linux.alibaba.com> (raw)
In-Reply-To: <1687245156-61215-1-git-send-email-renyu.zj@linux.alibaba.com>
To allow userspace to identify the specific implementation of the device,
add an "identifier" sysfs file.
The perf tool can match the Yitian 710 DDR metric through the identifier.
Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
Acked-by: Ian Rogers <irogers@google.com>
Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com>
---
drivers/perf/alibaba_uncore_drw_pmu.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/perf/alibaba_uncore_drw_pmu.c b/drivers/perf/alibaba_uncore_drw_pmu.c
index a7689fe..fe075fd 100644
--- a/drivers/perf/alibaba_uncore_drw_pmu.c
+++ b/drivers/perf/alibaba_uncore_drw_pmu.c
@@ -236,10 +236,37 @@ static ssize_t ali_drw_pmu_cpumask_show(struct device *dev,
.attrs = ali_drw_pmu_cpumask_attrs,
};
+static ssize_t ali_drw_pmu_identifier_show(struct device *dev,
+ struct device_attribute *attr,
+ char *page)
+{
+ return sysfs_emit(page, "%s\n", "ali_drw_pmu");
+}
+
+static umode_t ali_drw_pmu_identifier_attr_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ return attr->mode;
+}
+
+static struct device_attribute ali_drw_pmu_identifier_attr =
+ __ATTR(identifier, 0444, ali_drw_pmu_identifier_show, NULL);
+
+static struct attribute *ali_drw_pmu_identifier_attrs[] = {
+ &ali_drw_pmu_identifier_attr.attr,
+ NULL
+};
+
+static const struct attribute_group ali_drw_pmu_identifier_attr_group = {
+ .attrs = ali_drw_pmu_identifier_attrs,
+ .is_visible = ali_drw_pmu_identifier_attr_visible
+};
+
static const struct attribute_group *ali_drw_pmu_attr_groups[] = {
&ali_drw_pmu_events_attr_group,
&ali_drw_pmu_cpumask_attr_group,
&ali_drw_pmu_format_group,
+ &ali_drw_pmu_identifier_attr_group,
NULL,
};
--
1.8.3.1
next prev parent reply other threads:[~2023-06-20 7:12 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-20 7:12 [PATCH v4 0/4] Add JSON metrics for Yitian710 DDR Jing Zhang
2023-06-20 7:12 ` Jing Zhang [this message]
2023-06-20 7:12 ` [PATCH v4 2/4] perf jevents: Add support for Yitian 710 DDR PMU aliasing Jing Zhang
2023-06-20 7:12 ` [PATCH v4 3/4] perf vendor events: Add JSON metrics for Yitian 710 DDR Jing Zhang
2023-06-20 7:12 ` [PATCH v4 4/4] docs: perf: Update metric usage for Alibaba's T-Head PMU driver Jing Zhang
2023-06-20 7:30 ` John Garry
2023-06-20 19:04 ` [PATCH v4 0/4] Add JSON metrics for Yitian710 DDR Namhyung Kim
2023-06-21 3:08 ` Jing Zhang
2023-06-21 5:00 ` Namhyung Kim
2023-06-25 8:58 ` Jing Zhang
2023-06-26 12:44 ` Will Deacon
2023-06-27 7:19 ` Jing Zhang
2023-07-27 12:22 ` Will Deacon
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