linux-kernel - Re: (subset) [PATCH v3 0/4] Add support for hwspinlock bust

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Date: Wed, 29 May 2024 14:28:48 -0700
From: Bjorn Andersson <andersson@...nel.org>
To: Baolin Wang <baolin.wang@...ux.alibaba.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Will Deacon <will@...nel.org>,
	Waiman Long <longman@...hat.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Jonathan Corbet <corbet@....net>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Chris Lew <quic_clew@...cinc.com>
Cc: linux-remoteproc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	Richard Maina <quic_rmaina@...cinc.com>
Subject: Re: (subset) [PATCH v3 0/4] Add support for hwspinlock bust


On Wed, 29 May 2024 11:09:54 -0700, Chris Lew wrote:
> hwspinlocks can be acquired by many devices on the SoC. If any of these
> devices go into a bad state before the device releases the hwspinlock,
> then that hwspinlock may end up in an unusable state.
> 
> In the case of smem, each remoteproc takes a hwspinlock before trying to
> allocate an smem item. If the remoteproc were to suddenly crash without
> releasing this, it would be impossible for other remoteprocs to allocate
> any smem items.
> 
> [...]

Applied, thanks!

[3/4] soc: qcom: smem: Add qcom_smem_bust_hwspin_lock_by_host()
      commit: 2e3f0d693875db698891ffe89a18121bda5b95b8
[4/4] remoteproc: qcom_q6v5_pas: Add hwspinlock bust on stop
      commit: 568b13b65078e2b557ccf47674a354cecd1db641

Best regards,
-- 
Bjorn Andersson <andersson@...nel.org>