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Re: [RFC PATCH 27/30] Code tagging based latency tracking
- To: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
- From: Suren Baghdasaryan <surenb@xxxxxxxxxx>
- Date: Wed, 31 Aug 2022 08:55:24 -0700
- Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Kent Overstreet <kent.overstreet@xxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Roman Gushchin <roman.gushchin@xxxxxxxxx>, Mel Gorman <mgorman@xxxxxxx>, Davidlohr Bueso <dave@xxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, "Liam R. Howlett" <liam.howlett@xxxxxxxxxx>, David Vernet <void@xxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Laurent Dufour <ldufour@xxxxxxxxxxxxx>, Peter Xu <peterx@xxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, mcgrof@xxxxxxxxxx, masahiroy@xxxxxxxxxx, nathan@xxxxxxxxxx, changbin.du@xxxxxxxxx, ytcoode@xxxxxxxxx, Vincent Guittot <vincent.guittot@xxxxxxxxxx>, Dietmar Eggemann <dietmar.eggemann@xxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Benjamin Segall <bsegall@xxxxxxxxxx>, Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>, Valentin Schneider <vschneid@xxxxxxxxxx>, Christopher Lameter <cl@xxxxxxxxx>, Pekka Enberg <penberg@xxxxxxxxxx>, Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>, 42.hyeyoo@xxxxxxxxx, Alexander Potapenko <glider@xxxxxxxxxx>, Marco Elver <elver@xxxxxxxxxx>, dvyukov@xxxxxxxxxx, Shakeel Butt <shakeelb@xxxxxxxxxx>, Muchun Song <songmuchun@xxxxxxxxxxxxx>, arnd@xxxxxxxx, jbaron@xxxxxxxxxx, David Rientjes <rientjes@xxxxxxxxxx>, Minchan Kim <minchan@xxxxxxxxxx>, Kalesh Singh <kaleshsingh@xxxxxxxxxx>, kernel-team <kernel-team@xxxxxxxxxxx>, linux-mm <linux-mm@xxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, kasan-dev@xxxxxxxxxxxxxxxx, io-uring@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, linux-modules@xxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>
- Delivery-date: Wed, 31 Aug 2022 15:55:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Aug 30, 2022 at 6:53 PM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> 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
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