From: Leo Yan <leo.yan@arm.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>,
James Clark <james.clark@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/8] coresight: etm4x: Extract the trace unit controlling
Date: Mon, 10 Mar 2025 11:59:11 +0000 [thread overview]
Message-ID: <20250310115911.GE9682@e132581.arm.com> (raw)
In-Reply-To: <bb390d95-7f2b-4327-a809-9e4cdbd1a1bc@arm.com>
Hi Suzuki,
On Mon, Mar 10, 2025 at 10:57:25AM +0000, Suzuki Kuruppassery Poulose wrote:
> Hi Leo
>
> On 10/03/2025 10:49, Leo Yan wrote:
> > The trace unit is controlled in the ETM hardware enabling and disabling.
> > The sequential changes for support AUX pause and resume will reuse the
> > same operations.
> >
> > Extract the operations in the etm4_{enable|disable}_trace_unit()
> > functions. A minor improvement in etm4_enable_trace_unit() is for
> > returning the timeout error to callers.
> >
> > Signed-off-by: Leo Yan <leo.yan@arm.com>
>
> fyi, this area of code has changes significantly and will cause
> conflicts, due to the introduction of synchronization after
> each access to the TRCSTATR. Please rebase your next version on
> the coresight next branch to avoid the conflict.
Sure. Will rebase on CoreSight next branch [1].
Thanks for reminding.
Leo
[1] https://web.git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git/log/?//h=next
> The changes as such look good to me.
>
> Suzuki
next prev parent reply other threads:[~2025-03-10 11:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-10 10:49 [PATCH v2 0/8] Arm CoreSight: Support AUX pause and resume Leo Yan
2025-03-10 10:49 ` [PATCH v2 1/8] coresight: etm4x: Extract the trace unit controlling Leo Yan
2025-03-10 10:57 ` Suzuki K Poulose
2025-03-10 11:59 ` Leo Yan [this message]
2025-03-10 10:49 ` [PATCH v2 2/8] coresight: Introduce pause and resume APIs for source Leo Yan
2025-03-10 12:01 ` Suzuki K Poulose
2025-03-10 12:32 ` Leo Yan
2025-03-10 10:49 ` [PATCH v2 3/8] coresight: etm4x: Hook pause and resume callbacks Leo Yan
2025-03-10 10:49 ` [PATCH v2 4/8] coresight: perf: Support AUX trace pause and resume Leo Yan
2025-03-10 10:49 ` [PATCH v2 5/8] coresight: etm: Add an attribute for updating buffer Leo Yan
2025-03-10 13:29 ` Suzuki K Poulose
2025-03-10 15:50 ` Leo Yan
2025-03-10 16:37 ` Suzuki K Poulose
2025-03-10 18:03 ` Leo Yan
2025-03-10 10:49 ` [PATCH v2 6/8] coresight: perf: Update buffer on AUX pause Leo Yan
2025-03-10 10:49 ` [PATCH v2 7/8] Documentation: coresight: Document AUX pause and resume Leo Yan
2025-03-10 10:49 ` [PATCH v2 8/8] perf cs-etm: Sync kernel coresight-pmu.h header Leo Yan
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