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From: Eric Dumazet <edumazet@google.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>,
	kernel test robot <oliver.sang@intel.com>,
	Mel Gorman <mgorman@techsingularity.net>,
	0day robot <lkp@intel.com>, Michal Hocko <mhocko@kernel.org>,
	Shakeel Butt <shakeelb@google.com>, Wei Xu <weixugc@google.com>,
	Greg Thelen <gthelen@google.com>, Hugh Dickins <hughd@google.com>,
	David Rientjes <rientjes@google.com>,
	LKML <linux-kernel@vger.kernel.org>,
	lkp@lists.01.org, "Huang, Ying" <ying.huang@intel.com>,
	"Tang, Feng" <feng.tang@intel.com>,
	zhengjun.xing@linux.intel.com, fengwei.yin@intel.com,
	Eric Dumazet <eric.dumazet@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm <linux-mm@kvack.org>
Subject: Re: [mm/page_alloc] 8212a964ee: vm-scalability.throughput 30.5% improvement
Date: Sun, 13 Mar 2022 14:27:48 -0700	[thread overview]
Message-ID: <CANn89iL9u-dWpgNF7YGrQ4RQ5M_BwmS8Hqq3DPeWJunKRbu-PA@mail.gmail.com> (raw)
In-Reply-To: <Yi5ftFbykAZLLCwf@casper.infradead.org>

On Sun, Mar 13, 2022 at 2:18 PM Matthew Wilcox <willy@infradead.org> wrote:
>
> On Sun, Mar 13, 2022 at 02:10:12PM -0700, Eric Dumazet wrote:
> > @@ -3065,6 +3062,12 @@ static int rmqueue_bulk(struct zone *zone,
> > unsigned int order,
> >          */
> >         __mod_zone_page_state(zone, NR_FREE_PAGES, -(i << order));
> >         spin_unlock(&zone->lock);
> > +       list_for_each_entry_safe(page, tmp, list, lru) {
> > +               if (unlikely(check_pcp_refill(page))) {
> > +                       list_del(&page->lru);
> > +                       allocated--;
> > +               }
> > +       }
>
> ... you'd need to adjust __mod_zone_page_state() too, right?

Probably !
This was only to show the basic idea, as I said, not even compiled or tested :)

  reply	other threads:[~2022-03-13 21:28 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-04 17:02 [PATCH v2] mm/page_alloc: call check_new_pages() while zone spinlock is not held Eric Dumazet
2022-03-04 19:19 ` Shakeel Butt
2022-03-06 22:15 ` David Rientjes
2022-03-07  9:15 ` Mel Gorman
2022-03-08 23:49   ` Eric Dumazet
2022-03-09 12:32     ` Mel Gorman
2022-03-09 17:32       ` Eric Dumazet
2022-03-12 15:43       ` [mm/page_alloc] 8212a964ee: vm-scalability.throughput 30.5% improvement kernel test robot
2022-03-12 18:58         ` Vlastimil Babka
2022-03-12 23:26           ` Eric Dumazet
2022-03-13  9:28             ` Vlastimil Babka
2022-03-13 21:10               ` Eric Dumazet
2022-03-13 21:18                 ` Matthew Wilcox
2022-03-13 21:27                   ` Eric Dumazet [this message]
2022-03-13 21:36                     ` Eric Dumazet
2022-03-14  9:09                 ` Vlastimil Babka
2022-03-07  9:24 ` [PATCH v2] mm/page_alloc: call check_new_pages() while zone spinlock is not held Vlastimil Babka

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