linux-kernel - Re: [PATCH] coresight: Only register perf symlink for sinks with alloc

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Message-ID: <175205730826.265536.15080802362273791797.b4-ty@arm.com>
Date: Wed,  9 Jul 2025 11:38:38 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Mike Leach <mike.leach@...aro.org>,
	James Clark <james.clark@...aro.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Yuanfang Zhang <quic_yuanfang@...cinc.com>
Cc: Suzuki K Poulose <suzuki.poulose@....com>,
	kernel@....qualcomm.com,
	coresight@...ts.linaro.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] coresight: Only register perf symlink for sinks with alloc_buffer


On Mon, 30 Jun 2025 18:26:19 +0800, Yuanfang Zhang wrote:
> Ensure that etm_perf_add_symlink_sink() is only called for devices
> that implement the alloc_buffer operation. This prevents invalid
> symlink creation for dummy sinks that do not implement alloc_buffer.
> 
> Without this check, perf may attempt to use a dummy sink that lacks
> alloc_buffer operationsu to initialise perf's ring buffer, leading
> to runtime failures.
> 
> [...]

Applied, thanks!

[1/1] coresight: Only register perf symlink for sinks with alloc_buffer
      https://git.kernel.org/coresight/c/59b61f70

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