From: Roman Gushchin <guro@fb.com>
To: Shakeel Butt <shakeelb@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>, Linux MM <linux-mm@kvack.org>,
Vlastimil Babka <vbabka@suse.cz>,
Kernel Team <kernel-team@fb.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 01/19] mm: memcg: factor out memcg- and lruvec-level changes out of __mod_lruvec_state()
Date: Tue, 16 Jun 2020 20:19:58 -0700 [thread overview]
Message-ID: <20200617031958.GD10812@carbon.lan> (raw)
In-Reply-To: <CALvZod5CiU8qKNCo7gjh5O=BSGkM8Hj3Jr9ppmoWq+YY7w19Nw@mail.gmail.com>
On Tue, Jun 16, 2020 at 07:59:40PM -0700, Shakeel Butt wrote:
> On Tue, Jun 16, 2020 at 7:50 PM Roman Gushchin <guro@fb.com> wrote:
> >
> > On Tue, Jun 16, 2020 at 06:52:09PM -0700, Shakeel Butt wrote:
> > > On Mon, Jun 8, 2020 at 4:07 PM Roman Gushchin <guro@fb.com> wrote:
> > > >
> > > > To convert memcg and lruvec slab counters to bytes there must be
> > > > a way to change these counters without touching node counters.
> > > > Factor out __mod_memcg_lruvec_state() out of __mod_lruvec_state().
> > > >
> > > > Signed-off-by: Roman Gushchin <guro@fb.com>
> > > > Acked-by: Johannes Weiner <hannes@cmpxchg.org>
> > > > Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
> > > > ---
> > > > include/linux/memcontrol.h | 17 +++++++++++++++
> > > > mm/memcontrol.c | 43 +++++++++++++++++++++-----------------
> > > > 2 files changed, 41 insertions(+), 19 deletions(-)
> > > >
> > > > diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
> > > > index bbf624a7f5a6..93dbc7f9d8b8 100644
> > > > --- a/include/linux/memcontrol.h
> > > > +++ b/include/linux/memcontrol.h
> > > > @@ -679,11 +679,23 @@ static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec,
> > > > return x;
> > > > }
> > > >
> > > > +void __mod_memcg_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
> > > > + int val);
> > > > void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
> > > > int val);
> > > > void __mod_lruvec_slab_state(void *p, enum node_stat_item idx, int val);
> > > > void mod_memcg_obj_state(void *p, int idx, int val);
> > > >
> > > > +static inline void mod_memcg_lruvec_state(struct lruvec *lruvec,
> > > > + enum node_stat_item idx, int val)
> > >
> > > Is this function used in later patches? Any benefit introducing it
> > > here instead of in the patch where it is used for the first time?
> >
> > Yes, it's used in "mm: memcg/slab: charge individual slab objects instead of pages".
> >
> > It's a fairly large patchset with many internal dependencies, so there is
> > always a trade-off between putting everything into a single patch, which is
> > hard to review, and splitting out some changes, which make not much sense
> > without seeing the whole picture.
> >
> > In this particular case splitting out a formal and easy-to-verify change makes
> > the actual non-trivial patch smaller and hopefully easier for a review.
> >
> > But of course it's all subjective.
> >
> > Thanks!
>
> I am fine with that.
>
> Reviewed-by: Shakeel Butt <shakeelb@google.com>
Thank you! Appreciate it!
next prev parent reply other threads:[~2020-06-17 3:20 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 23:06 [PATCH v6 00/19] The new cgroup slab memory controller Roman Gushchin
2020-06-08 23:06 ` [PATCH v6 01/19] mm: memcg: factor out memcg- and lruvec-level changes out of __mod_lruvec_state() Roman Gushchin
2020-06-17 1:52 ` Shakeel Butt
2020-06-17 2:50 ` Roman Gushchin
2020-06-17 2:59 ` Shakeel Butt
2020-06-17 3:19 ` Roman Gushchin [this message]
2020-06-08 23:06 ` [PATCH v6 02/19] mm: memcg: prepare for byte-sized vmstat items Roman Gushchin
2020-06-17 2:57 ` Shakeel Butt
2020-06-17 3:19 ` Roman Gushchin
2020-06-17 15:55 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 03/19] mm: memcg: convert vmstat slab counters to bytes Roman Gushchin
2020-06-17 3:03 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 04/19] mm: slub: implement SLUB version of obj_to_index() Roman Gushchin
2020-06-17 3:08 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 05/19] mm: memcontrol: decouple reference counting from page accounting Roman Gushchin
2020-06-18 0:47 ` Shakeel Butt
2020-06-18 14:55 ` Shakeel Butt
2020-06-18 19:51 ` Roman Gushchin
2020-06-19 1:08 ` Roman Gushchin
2020-06-19 1:18 ` Shakeel Butt
2020-06-19 1:31 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 06/19] mm: memcg/slab: obj_cgroup API Roman Gushchin
2020-06-19 15:42 ` Shakeel Butt
2020-06-19 21:38 ` Roman Gushchin
2020-06-19 22:16 ` Shakeel Butt
2020-06-19 22:52 ` Roman Gushchin
2020-06-20 22:50 ` Andrew Morton
2020-06-08 23:06 ` [PATCH v6 07/19] mm: memcg/slab: allocate obj_cgroups for non-root slab pages Roman Gushchin
2020-06-19 16:36 ` Shakeel Butt
2020-06-20 0:25 ` Roman Gushchin
2020-06-20 0:31 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 08/19] mm: memcg/slab: save obj_cgroup for non-root slab objects Roman Gushchin
2020-06-20 0:16 ` Shakeel Butt
2020-06-20 1:19 ` Roman Gushchin
2020-06-08 23:06 ` [PATCH v6 09/19] mm: memcg/slab: charge individual slab objects instead of pages Roman Gushchin
2020-06-20 0:54 ` Shakeel Butt
2020-06-20 1:29 ` Roman Gushchin
2020-06-08 23:06 ` [PATCH v6 10/19] mm: memcg/slab: deprecate memory.kmem.slabinfo Roman Gushchin
2020-06-22 17:12 ` Shakeel Butt
2020-06-22 18:01 ` Roman Gushchin
2020-06-22 18:09 ` Shakeel Butt
2020-06-22 18:25 ` Roman Gushchin
2020-06-22 18:38 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 11/19] mm: memcg/slab: move memcg_kmem_bypass() to memcontrol.h Roman Gushchin
2020-06-20 1:19 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 12/19] mm: memcg/slab: use a single set of kmem_caches for all accounted allocations Roman Gushchin
2020-06-22 16:56 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 13/19] mm: memcg/slab: simplify memcg cache creation Roman Gushchin
2020-06-22 17:29 ` Shakeel Butt
2020-06-22 17:40 ` Roman Gushchin
2020-06-22 18:03 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 14/19] mm: memcg/slab: remove memcg_kmem_get_cache() Roman Gushchin
2020-06-22 18:42 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 15/19] mm: memcg/slab: deprecate slab_root_caches Roman Gushchin
2020-06-22 17:36 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 16/19] mm: memcg/slab: remove redundant check in memcg_accumulate_slabinfo() Roman Gushchin
2020-06-22 17:32 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 17/19] mm: memcg/slab: use a single set of kmem_caches for all allocations Roman Gushchin
2020-06-17 23:35 ` Andrew Morton
2020-06-18 0:35 ` Roman Gushchin
2020-06-18 7:33 ` Vlastimil Babka
2020-06-18 19:54 ` Roman Gushchin
2020-06-22 19:21 ` Shakeel Butt
2020-06-22 20:37 ` Roman Gushchin
2020-06-22 21:04 ` Shakeel Butt
2020-06-22 21:13 ` Roman Gushchin
2020-06-22 21:28 ` Shakeel Butt
2020-06-22 21:58 ` Roman Gushchin
2020-06-22 22:05 ` Shakeel Butt
2020-06-08 23:06 ` [PATCH v6 18/19] kselftests: cgroup: add kernel memory accounting tests Roman Gushchin
2020-06-08 23:06 ` [PATCH v6 19/19] tools/cgroup: add memcg_slabinfo.py tool Roman Gushchin
2020-06-17 1:46 ` [PATCH v6 00/19] The new cgroup slab memory controller Shakeel Butt
2020-06-17 2:41 ` Roman Gushchin
2020-06-17 3:05 ` Shakeel Butt
2020-06-17 3:32 ` Roman Gushchin
2020-06-17 11:24 ` Vlastimil Babka
2020-06-17 14:31 ` Mel Gorman
2020-06-20 0:57 ` Roman Gushchin
2020-06-18 1:29 ` Roman Gushchin
2020-06-18 8:43 ` Jesper Dangaard Brouer
2020-06-18 9:31 ` Jesper Dangaard Brouer
2020-06-19 1:30 ` Roman Gushchin
2020-06-19 8:32 ` Jesper Dangaard Brouer
2020-06-19 1:27 ` Roman Gushchin
2020-06-19 9:39 ` Jesper Dangaard Brouer
2020-06-19 18:47 ` Roman Gushchin
2020-06-18 9:27 ` Mike Rapoport
2020-06-18 20:43 ` Roman Gushchin
2020-06-21 22:57 ` Qian Cai
2020-06-21 23:34 ` Roman Gushchin
[not found] ` <7DEA68BC-3B9A-46FA-8103-AE6B72324591@lca.pw>
2020-06-22 3:07 ` Roman Gushchin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200617031958.GD10812@carbon.lan \
--to=guro@fb.com \
--cc=akpm@linux-foundation.org \
--cc=cl@linux.com \
--cc=hannes@cmpxchg.org \
--cc=kernel-team@fb.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=shakeelb@google.com \
--cc=vbabka@suse.cz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).