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Fri, 09 Apr 2021 20:40:40 -0700 (PDT) MIME-Version: 1.0 References: <20210401183216.443C4443@viggo.jf.intel.com> <20210401183227.99A473BE@viggo.jf.intel.com> In-Reply-To: <20210401183227.99A473BE@viggo.jf.intel.com> From: Wei Xu Date: Fri, 9 Apr 2021 20:40:29 -0700 Message-ID: Subject: Re: [PATCH 06/10] mm/vmscan: add page demotion counter To: Dave Hansen Cc: Linux MM , Linux Kernel Mailing List , Yang Shi , Yang Shi , David Rientjes , Huang Ying , Dan Williams , David Hildenbrand , Oscar Salvador Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: BF22740002CD X-Stat-Signature: qxpipe8838ftdmczdxrbtzouwys8yra9 Received-SPF: none (google.com>: No applicable sender policy available) receiver=imf26; identity=mailfrom; envelope-from=""; helo=mail-il1-f178.google.com; client-ip=209.85.166.178 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1618026037-347666 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Apr 1, 2021 at 11:35 AM Dave Hansen wrote: > > > From: Yang Shi > > Account the number of demoted pages into reclaim_state->nr_demoted. > > Add pgdemote_kswapd and pgdemote_direct VM counters showed in > /proc/vmstat. > > [ daveh: > - __count_vm_events() a bit, and made them look at the THP > size directly rather than getting data from migrate_pages() > ] > > Signed-off-by: Yang Shi > Signed-off-by: Dave Hansen > Reviewed-by: Yang Shi > Cc: Wei Xu > Cc: David Rientjes > Cc: Huang Ying > Cc: Dan Williams > Cc: David Hildenbrand > Cc: osalvador These counters can be more useful if they are per-node. Reviewed-by: Wei Xu