From: Bart Van Assche <bvanassche@acm.org>
To: "孙魁 (Kui Sun)" <kui.sun@unisoc.com>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Alim Akhtar" <alim.akhtar@samsung.com>,
"Avri Altman" <avri.altman@wdc.com>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
"andre.draszik@linaro.org" <andre.draszik@linaro.org>
Cc: "Peter Griffin" <peter.griffin@linaro.org>,
"Tudor Ambarus" <tudor.ambarus@linaro.org>,
"Will McVicker" <willmcvicker@google.com>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"kernel-team@android.com" <kernel-team@android.com>,
"linux-samsung-soc@vger.kernel.org"
<linux-samsung-soc@vger.kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"张如泉 (Rain Zhang)" <Rain.Zhang@unisoc.com>,
"cixi.geng@linux.dev" <cixi.geng@linux.dev>,
"唐月林 (Yuelin Tang)" <yuelin.tang@unisoc.com>,
"陈文超 (Wenchao Chen)" <Wenchao.Chen@unisoc.com>,
"André Draszik" <andre.draszik@linaro.org>
Subject: Re: [RFC] Significant Random I/O Performance Regression in Linux Kernel 6.18 (Up to 27.7%) Likely Caused by Commit 3c7ac40d7322
Date: Fri, 10 Jul 2026 07:56:23 -0700 [thread overview]
Message-ID: <d426b4d5-cdf5-4090-8e94-62e652f712dc@acm.org> (raw)
In-Reply-To: <12a8417dc8644a71b9cb25c53c93805a@zeshmbx08.spreadtrum.com>
On 7/10/26 12:17 AM, 孙魁 (Kui Sun) wrote:
> Through investigation, we identified that upstream commit
> 3c7ac40d732232fec0ba31d0a5e3cc9c112fc2e7, merged in April 2025, is
> likely responsible for this performance drop.
Two fixes for that commit are present in the upstream kernel. Are these
fixes present in your kernel tree?
commit eabcac808ca3ee9878223d4b49b750979029016b
Author: Bart Van Assche <bvanassche@acm.org>
Date: Fri Aug 15 08:58:23 2025 -0700
scsi: ufs: core: Fix IRQ lock inversion for the SCSI host lock
commit 034d319c8899e8c5c0a35c6692c7fc7e8c12c374
Author: Nitin Rawat <quic_nitirawa@quicinc.com>
Date: Tue Jul 29 04:27:11 2025 +0530
scsi: ufs: core: Fix interrupt handling for MCQ Mode
Thanks,
Bart.
next prev parent reply other threads:[~2026-07-10 14:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-10 7:17 孙魁 (Kui Sun)
2026-07-10 9:54 ` André Draszik
2026-07-10 14:56 ` Bart Van Assche [this message]
2026-07-11 11:21 ` 答复: " 孙魁 (Kui Sun)
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