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Date: Wed, 14 Dec 2022 19:42:26 -0800 From: Kees Cook <keescook@...omium.org> To: jstultz@...gle.com, linux-kernel@...r.kernel.org Cc: Kees Cook <keescook@...omium.org>, wvw@...gle.com, kernel-team@...roid.com, anton@...msg.org, connoro@...gle.com, Tony Luck <tony.luck@...el.com>, ccross@...roid.com, midaschieh@...gle.com Subject: Re: [PATCH v2] pstore: Switch pmsg_lock to an rt_mutex to avoid priority inversion On Wed, 14 Dec 2022 23:18:34 +0000, John Stultz wrote: > Wei Wang reported seeing priority inversion caused latencies > caused by contention on pmsg_lock, and suggested it be switched > to a rt_mutex. > > I was initially hesitant this would help, as the tasks in that > trace all seemed to be SCHED_NORMAL, so the benefit would be > limited to only nice boosting. > > [...] Applied to for-next/pstore, thanks! [1/1] pstore: Switch pmsg_lock to an rt_mutex to avoid priority inversion https://git.kernel.org/kees/c/76d62f24db07 -- Kees Cook
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