From: Leo Yan <leo.yan@arm.com>
To: Junhao He <hejunhao3@huawei.com>
Cc: suzuki.poulose@arm.com, james.clark@arm.com,
anshuman.khandual@arm.com, coresight@lists.linaro.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linuxarm@huawei.com,
jonathan.cameron@huawei.com, yangyicong@huawei.com,
prime.zeng@hisilicon.com
Subject: Re: [PATCH v2 1/3] coresight: tmc: Add missing doc of tmc_drvdata::reading
Date: Wed, 2 Jul 2025 16:27:20 +0100 [thread overview]
Message-ID: <20250702152720.GA794930@e132581.arm.com> (raw)
In-Reply-To: <20250620075412.952934-2-hejunhao3@huawei.com>
On Fri, Jun 20, 2025 at 03:54:10PM +0800, Junhao He wrote:
> From: Yicong Yang <yangyicong@hisilicon.com>
>
> tmc_drvdata::reading is used to indicate whether a reading process
> is performed through /dev/xyz.tmc. Document it.
>
> Reviewed-by: James Clark <james.clark@linaro.org>
> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
> Signed-off-by: Junhao He <hejunhao3@huawei.com>
> ---
> drivers/hwtracing/coresight/coresight-tmc.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h
> index 6541a27a018e..3ca0d40c580d 100644
> --- a/drivers/hwtracing/coresight/coresight-tmc.h
> +++ b/drivers/hwtracing/coresight/coresight-tmc.h
> @@ -220,6 +220,7 @@ struct tmc_resrv_buf {
> * @pid: Process ID of the process that owns the session that is using
> * this component. For example this would be the pid of the Perf
> * process.
> + * @reading: buffer's in the reading through "/dev/xyz.tmc" entry
Are you working on the latest code base? For example, the mainline
kernel or coresight next branch.
The latest code already has comment for reading, and I saw a duplicated
"reading" field in tmc_drvdata.
The tmc_resrv_buf structure does not have the fields "pid",
"stop_on_flush", "buf", etc. They have been moved into the tmc_drvdata
structure.
Thanks,
Leo
> * @stop_on_flush: Stop on flush trigger user configuration.
> * @buf: Snapshot of the trace data for ETF/ETB.
> * @etr_buf: details of buffer used in TMC-ETR
> --
> 2.33.0
>
next prev parent reply other threads:[~2025-07-02 16:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 7:54 [PATCH v2 0/3] Coresight TMC-ETR some bugfixes and cleanups Junhao He
2025-06-20 7:54 ` [PATCH v2 1/3] coresight: tmc: Add missing doc of tmc_drvdata::reading Junhao He
2025-06-20 11:53 ` Jonathan Cameron
2025-07-01 13:38 ` hejunhao
2025-07-02 15:27 ` Leo Yan [this message]
2025-07-19 11:05 ` hejunhao
2025-06-20 7:54 ` [PATCH v2 2/3] coresight: tmc: refactor the tmc-etr mode setting to avoid race conditions Junhao He
2025-06-20 12:45 ` Jonathan Cameron
2025-07-01 13:35 ` hejunhao
2025-07-02 16:47 ` Leo Yan
2025-07-19 11:09 ` hejunhao
2025-06-20 7:54 ` [PATCH v2 3/3] coresight: tmc: Decouple the perf buffer allocation from sysfs mode Junhao He
2025-07-02 17:08 ` Leo Yan
2025-07-19 11:20 ` hejunhao
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