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Message-ID: <4d492cef3640414d85ecfdb602ad6fa0@intel.com> Date: Fri, 15 Oct 2021 15:37:06 +0000 From: "Luck, Tony" <tony.luck@...el.com> To: Shuai Xue <xueshuai@...ux.alibaba.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, "bp@...en8.de" <bp@...en8.de>, "james.morse@....com" <james.morse@....com>, "lenb@...nel.org" <lenb@...nel.org>, "rjw@...ysocki.net" <rjw@...ysocki.net> CC: "zhangliguang@...ux.alibaba.com" <zhangliguang@...ux.alibaba.com>, "zhuo.song@...ux.alibaba.com" <zhuo.song@...ux.alibaba.com> Subject: RE: [PATCH] ACPI, APEI, EINJ: Relax platform response timeout to 1 second. > We observe that the waiting time for DDR error injection is about 10 ms > and that for PCIe error injection is about 500 ms in Arm platfrom. > > In this patch, we relax the response timeout to 1 second and allow user to > pass the time out value as a argument. Spinning for 1ms was maybe ok. Spinning for up to 1s seems like a bad idea. This code is executed inside a mutex ... so maybe it is safe to sleep instead of spin? -Tony
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