linux-kernel - Re: [PATCH v5 0/2] coresight: catu: Introduce refcount and spinlock for enabling/disabling

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Message-ID: <174602129798.56812.10570639925939232972.b4-ty@arm.com>
Date: Wed, 30 Apr 2025 14:55:12 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Mike Leach <mike.leach@...aro.org>,
	James Clark <james.clark@...aro.org>,
	Leo Yan <leo.yan@....com>,
	Jie Gan <quic_jiegan@...cinc.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Yabin Cui <yabinc@...gle.com>
Cc: Suzuki K Poulose <suzuki.poulose@....com>,
	coresight@...ts.linaro.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/2] coresight: catu: Introduce refcount and spinlock for enabling/disabling


On Tue, 29 Apr 2025 16:12:58 -0700, Yabin Cui wrote:
> When tracing ETM data on multiple CPUs concurrently via the
> perf interface, the CATU device is shared across different CPU
> paths. This can lead to race conditions when multiple CPUs attempt
> to enable or disable the CATU device simultaneously. This patchset
> is to fix race conditions when enabling/disabling a CATU device.
> 
> Changes since v4:
>  - Collect Review-by tags.
>  - return -EINVAL for unknown types in coresight_enable_path.
> 
> [...]

Applied, thanks!

[1/2] coresight: catu: Introduce refcount and spinlock for enabling/disabling
      https://git.kernel.org/coresight/c/a03a0a08
[2/2] coresight: core: Disable helpers for devices that fail to enable
      https://git.kernel.org/coresight/c/f6028eee

Best regards,
-- 
Suzuki K Poulose <suzuki.poulose@....com>