From: Jie Zhan <zhanjie9@hisilicon.com>
To: <will@kernel.org>, <mark.rutland@arm.com>,
<mathieu.poirier@linaro.org>, <suzuki.poulose@arm.com>,
<mike.leach@linaro.org>, <leo.yan@linaro.org>,
<john.g.garry@oracle.com>, <james.clark@arm.com>,
<peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
<corbet@lwn.net>, <jonathan.cameron@huawei.com>
Cc: <zhangshaokun@hisilicon.com>, <shenyang39@huawei.com>,
<hejunhao3@huawei.com>, <yangyicong@hisilicon.com>,
<prime.zeng@huawei.com>, <suntao25@huawei.com>,
<jiazhao4@hisilicon.com>, <linuxarm@huawei.com>,
<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-perf-users@vger.kernel.org>
Subject: Re: [RFC PATCH v1 1/4] docs: perf: Add documentation for HiSilicon PMCU
Date: Tue, 7 Feb 2023 11:03:35 +0800 [thread overview]
Message-ID: <08a68444-efb0-9d2e-7e70-0e495ad6ddc1@hisilicon.com> (raw)
In-Reply-To: <20230206065146.645505-2-zhanjie9@hisilicon.com>
On 06/02/2023 14:51, Jie Zhan wrote:
> +
> +2. Profiling with ``perf-record``.
> +
> + The command to start the sampling is::
> +
> + perf record -e hisi_pmcu_sccl3/<configs>/
> +
> + Users can pass the following optional parameters to ``<configs>``:
> +
> + - nr_sample: number of samples to take. This defaults to 128.
> + - sample_period_ms: time interval in microseconds for PMU counters to keep
Spot a typo before causing any confusion. This should be "milliseconds"
rather than "microseconds".
Jie
> + counting for each event. This defaults to 3, i.e. 3ms, and its max
> + value is 85,899, i.e. 85 seconds.
> + - pmccfiltr: bits 31-24 of the sysreg PMCCFILTR_EL0, which controls how the
> + cycle counter increments. This defaults to 0x00. Please refer to the
> + "Performance Monitors external register descriptions" of *Arm Architecture
> + Reference Manual for A-profile architecture* on how to configure
> + PMCCFILTR_EL0.
> +
> ...
next prev parent reply other threads:[~2023-02-07 3:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-06 6:51 [RFC PATCH v1 0/4] HiSilicon Performance Monitor Control Unit Jie Zhan
2023-02-06 6:51 ` [RFC PATCH v1 1/4] docs: perf: Add documentation for HiSilicon PMCU Jie Zhan
2023-02-07 3:03 ` Jie Zhan [this message]
2023-03-17 13:37 ` Jonathan Cameron
2023-03-24 9:32 ` Jie Zhan
2023-03-24 12:14 ` Jonathan Cameron
2023-03-25 2:48 ` Jie Zhan
2023-02-06 6:51 ` [RFC PATCH v1 2/4] drivers/perf: hisi: Add driver support " Jie Zhan
2023-03-17 14:52 ` Jonathan Cameron
2023-03-25 10:21 ` Jie Zhan
2023-02-06 6:51 ` [RFC PATCH v1 3/4] perf tool: Add HiSilicon PMCU data recording support Jie Zhan
2023-03-17 15:13 ` Jonathan Cameron
2023-02-06 6:51 ` [RFC PATCH v1 4/4] perf tool: Add HiSilicon PMCU data decoding support Jie Zhan
2023-02-27 8:49 ` [RFC PATCH v1 0/4] HiSilicon Performance Monitor Control Unit Jie Zhan
2023-03-17 13:11 ` Jonathan Cameron
2023-04-19 8:01 ` Jie Zhan
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