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trace To: Yu Zhao , Jaewon Kim , Kalesh Singh Cc: Steven Rostedt , Masami Hiramatsu , Andrew Morton , Suren Baghdasaryan , Vlastimil Babka , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-mm@kvack.org, bpf@vger.kernel.org, opensource.kernel@vivo.com References: <20231018082104.3918770-1-link@vivo.com> <20231018082104.3918770-2-link@vivo.com> From: Huan Yang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: SG2PR04CA0189.apcprd04.prod.outlook.com (2603:1096:4:14::27) To PUZPR06MB5676.apcprd06.prod.outlook.com (2603:1096:301:f8::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PUZPR06MB5676:EE_|SEYPR06MB6878:EE_ X-MS-Office365-Filtering-Correlation-Id: 2a053b88-5890-48bf-7caf-08dbd04a9240 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 chid2bpV 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OK, nr_demote isn't MGLRU, separate is good, but, if this, nr_demote isn't need by myself, I just add this when I see this code. :) Please see nr_promote and nr_scanned fix  is MGLRU need? > >> And then, use correct nr_scanned which evict_folios passed into >> trace_mm_vmscan_lru_shrink_inactive. >> >> Mistake info like this: >> ``` >> kswapd0-89 [000] 64.887613: mm_vmscan_lru_shrink_inactive: >> nid=0 nr_scanned=64 nr_reclaimed=0 nr_dirty=0 nr_writeback=0 >> nr_congested=0 nr_immediate=0 nr_activate_anon=0 nr_activate_file=0 >> nr_ref_keep=0 nr_unmap_fail=0 priority=4 >> flags=RECLAIM_WB_FILE|RECLAIM_WB_ASYNC >> ``` >> Correct info like this: >> ``` >> <...>-9041 [006] 43.738481: mm_vmscan_lru_shrink_inactive: >> nid=0 nr_scanned=13 nr_reclaimed=0 nr_dirty=0 nr_writeback=0 >> nr_congested=0 nr_immediate=0 nr_activate_anon=9 nr_activate_file=0 >> nr_ref_keep=0 nr_unmap_fail=0 nr_promote=4 nr_demote=0 priority=12 >> flags=RECLAIM_WB_ANON|RECLAIM_WB_ASYNC >> ``` > Adding Jaewon & Kalesh to take a look. Thanks, Huan