linux-kernel - Re: [RFC PATCH 27/30] Code tagging based latency tracking

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Message-ID: <CAJuCfpE2qrN7uXqZjJz6o20Rh4cQgcUBzAxzP4s+u=6XtmBnbg@mail.gmail.com>
Date:   Wed, 31 Aug 2022 08:55:24 -0700
From:   Suren Baghdasaryan <surenb@...gle.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Kent Overstreet <kent.overstreet@...ux.dev>,
        Michal Hocko <mhocko@...e.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Mel Gorman <mgorman@...e.de>,
        Davidlohr Bueso <dave@...olabs.net>,
        Matthew Wilcox <willy@...radead.org>,
        "Liam R. Howlett" <liam.howlett@...cle.com>,
        David Vernet <void@...ifault.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Laurent Dufour <ldufour@...ux.ibm.com>,
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        Benjamin Segall <bsegall@...gle.com>,
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        Minchan Kim <minchan@...gle.com>,
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        kernel-team <kernel-team@...roid.com>,
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        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 27/30] Code tagging based latency tracking

On Tue, Aug 30, 2022 at 6:53 PM Randy Dunlap <rdunlap@...radead.org> wrote:
>
>
>
> On 8/30/22 14:49, Suren Baghdasaryan wrote:
> > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> > index b7d03afbc808..b0f86643b8f0 100644
> > --- a/lib/Kconfig.debug
> > +++ b/lib/Kconfig.debug
> > @@ -1728,6 +1728,14 @@ config LATENCYTOP
> >         Enable this option if you want to use the LatencyTOP tool
> >         to find out which userspace is blocking on what kernel operations.
> >
> > +config CODETAG_TIME_STATS
> > +     bool "Code tagging based latency measuring"
> > +     depends on DEBUG_FS
> > +     select TIME_STATS
> > +     select CODE_TAGGING
> > +     help
> > +       Enabling this option makes latency statistics available in debugfs
>
> Missing period at the end of the sentence.

Ack.

>
> --
> ~Randy