From: Shakeel Butt <shakeelb@google.com>
To: Waiman Long <longman@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Vlastimil Babka <vbabka@suse.cz>, Roman Gushchin <guro@fb.com>,
LKML <linux-kernel@vger.kernel.org>,
Cgroups <cgroups@vger.kernel.org>, Linux MM <linux-mm@kvack.org>,
Muchun Song <songmuchun@bytedance.com>,
Alex Shi <alex.shi@linux.alibaba.com>,
Chris Down <chris@chrisdown.name>,
Yafang Shao <laoar.shao@gmail.com>,
Alexander Duyck <alexander.h.duyck@linux.intel.com>,
Wei Yang <richard.weiyang@gmail.com>,
Masayoshi Mizuma <msys.mizuma@gmail.com>
Subject: Re: [PATCH 2/5] mm/memcg: Introduce obj_cgroup_uncharge_mod_state()
Date: Mon, 12 Apr 2021 08:50:51 -0700 [thread overview]
Message-ID: <CALvZod5m_J4z0sZrd72yftXhYF9PmtJDfRKDK9WVSMvo7PP6uw@mail.gmail.com> (raw)
In-Reply-To: <20210409231842.8840-3-longman@redhat.com>
On Fri, Apr 9, 2021 at 4:19 PM Waiman Long <longman@redhat.com> wrote:
>
> In memcg_slab_free_hook()/pcpu_memcg_free_hook(), obj_cgroup_uncharge()
> is followed by mod_objcg_state()/mod_memcg_state(). Each of these
> function call goes through a separate irq_save/irq_restore cycle. That
> is inefficient. Introduce a new function obj_cgroup_uncharge_mod_state()
> that combines them with a single irq_save/irq_restore cycle.
>
> Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
next prev parent reply other threads:[~2021-04-12 15:51 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-09 23:18 [PATCH 0/5] mm/memcg: Reduce kmemcache memory accounting overhead Waiman Long
2021-04-09 23:18 ` [PATCH 1/5] mm/memcg: Pass both memcg and lruvec to mod_memcg_lruvec_state() Waiman Long
2021-04-12 18:04 ` Roman Gushchin
2021-04-12 19:24 ` Waiman Long
2021-04-12 19:22 ` Shakeel Butt
2021-04-09 23:18 ` [PATCH 2/5] mm/memcg: Introduce obj_cgroup_uncharge_mod_state() Waiman Long
2021-04-12 15:50 ` Shakeel Butt [this message]
2021-04-12 18:10 ` Roman Gushchin
2021-04-09 23:18 ` [PATCH 3/5] mm/memcg: Cache vmstat data in percpu memcg_stock_pcp Waiman Long
2021-04-12 18:22 ` Roman Gushchin
2021-04-12 19:30 ` Waiman Long
2021-04-09 23:18 ` [PATCH 4/5] mm/memcg: Separate out object stock data into its own struct Waiman Long
2021-04-12 18:53 ` Roman Gushchin
2021-04-09 23:18 ` [PATCH 5/5] mm/memcg: Optimize user context object stock access Waiman Long
2021-04-10 6:07 ` kernel test robot
2021-04-12 14:07 ` Waiman Long
2021-04-12 18:55 ` Roman Gushchin
2021-04-12 19:58 ` Waiman Long
2021-04-10 1:51 ` [PATCH 0/5] mm/memcg: Reduce kmemcache memory accounting overhead Roman Gushchin
2021-04-12 14:03 ` Waiman Long
2021-04-12 17:47 ` Roman Gushchin
2021-04-12 19:20 ` Waiman Long
2021-04-12 19:05 ` Roman Gushchin
2021-04-12 19:51 ` Waiman Long
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