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Date: Wed, 16 Mar 2022 14:50:57 -0700 From: Reinette Chatre <reinette.chatre@...el.com> To: James Morse <james.morse@....com>, <x86@...nel.org>, <linux-kernel@...r.kernel.org> CC: Fenghua Yu <fenghua.yu@...el.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, H Peter Anvin <hpa@...or.com>, Babu Moger <Babu.Moger@....com>, <shameerali.kolothum.thodi@...wei.com>, Jamie Iles <jamie@...iainc.com>, "D Scott Phillips OS" <scott@...amperecomputing.com>, <lcherian@...vell.com>, <bobo.shaobowang@...wei.com>, <tan.shaopeng@...itsu.com> Subject: Re: [PATCH v3 14/21] x86/recstrl: Allow per-rmid arch private storage to be reset Hi James, Note the subject line: "x86/recstrl" -> "x86/resctrl" On 2/17/2022 10:21 AM, James Morse wrote: > To abstract the rmid counters into a helper that returns the number > of bytes counted, architecture specific per-rmid state is needed. > > It needs to be possible to reset this hidden state, as the values > may outlive the life of an rmid, or the mount time of the filesystem. > > mon_event_read() is called with first = true when an rmid is first > allocated in mkdir_mondata_subdir(). Add resctrl_arch_reset_rmid() > and call it from __mon_event_count()'s rr->first check. > > Reviewed-by: Shaopeng Tan <tan.shaopeng@...itsu.com> > Signed-off-by: James Morse <james.morse@....com> Reinette
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