From nobody Mon Feb 9 14:14:35 2026 Received: from mail-qv1-f53.google.com (mail-qv1-f53.google.com [209.85.219.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D2E6D11717 for ; Wed, 20 Mar 2024 02:42:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.53 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710902549; cv=none; b=eb0s0mQaJHopy6HPwJfwzIZHOk/MH/LiBE6SzG55s0Hsh9fNaBIOIJsdihom28c1+tljwAnRzuMlAlutPDw7wk6hPanmgVxC3MevtTrhYJ5DzeeNt1Bgh05MugCBeVaZkWgkY1AjxraIfKU01Nc4PFQd/+v/g65XkcXaE2CwomE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710902549; c=relaxed/simple; bh=WFhBYAwLNBbB8uV/HwzsFmNf8vujXFelMMa+4V8Uzr0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=lw6cKxn1tG0F/g1JVyNxCnneNM2RMM20LnmR0fRJfUDCrxhG7BVsrm1SYnogna1UyySOenIBBy97L7d2FHKP59KUqOd50Efl8MrHKslRoq9s1sDxtz6yNnl4HtNSY8JA3GZHU/+yum7Vxpy0XxhIAHpHWgFgOelTtdgrjrAi/Qo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=cs.cmu.edu; spf=pass smtp.mailfrom=andrew.cmu.edu; dkim=pass (2048-bit key) header.d=cs.cmu.edu header.i=@cs.cmu.edu header.b=KLh5EMNq; arc=none smtp.client-ip=209.85.219.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=cs.cmu.edu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=andrew.cmu.edu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=cs.cmu.edu header.i=@cs.cmu.edu header.b="KLh5EMNq" Received: by mail-qv1-f53.google.com with SMTP id 6a1803df08f44-69629b4ae2bso15004146d6.3 for ; Tue, 19 Mar 2024 19:42:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cs.cmu.edu; s=google-2021; t=1710902545; x=1711507345; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:reply-to:references :in-reply-to:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=DIGL+dvsKsYG7Tx7310j/b/qOHwOOB9JaG0dOT6QmVU=; b=KLh5EMNqAhttxh2TlBWT9qn8jbLvEytYduqt77T2iiUTTG+otRGEo1CpM75ZU0kQMS 1mXlSCJi/zxjmUY7GRVuiJ/ZQTYR7B0WC1ZZe/ysWNKILTsgmy6juKN6v5Sb3mnZ7dcX 2pQrFKhoX6LYjSZsB/DCzuU7HpOFtpYpB5BXHQ39cK9ffs9utgLOGti+XonRnEIaVI0A WS2QygmrLMB0BHQe/LMOE/O5E5dpLOQWGk2THiZQWH8i9bTqnDS6QwvZziRFoQB3BggB BGHgLZjjNFKf7BWgl70qKiIh/U3tSvglH5WyFc1bCJiRnoU/5CRejTXqUQ6XwnmokMkP Hhfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710902545; x=1711507345; h=content-transfer-encoding:mime-version:reply-to:references :in-reply-to:message-id:date:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=DIGL+dvsKsYG7Tx7310j/b/qOHwOOB9JaG0dOT6QmVU=; b=VNiQvb9HJYiNQvnEEXyR8w2ULlopHA9wg0ekqGFTDDON5dDLQpLvd0Ltg3qwEV3V+P aLVgSVHM6G61a8iW5yyeyP21h+4L2l17bmhYD8uTHx1W/NViqn9AyMX4s07+whqy5Ad9 /HQD9vW+5qDYHPtJJygBw22n4cteiH5441fSdylcJddUkA6NX+SHARKWFcZ2D0PPG4r9 7/ms4BUwEZrq0FxPEFBbmhPcXViU2qHRjpi5ohQ/UDuwv1vXOlymGNduerhkPW0Mqzkp oBPJDUhtCP12ta7ck31df2RfKyQKolLvf/Z+OhQBDhCTAMBzeyXQv59pLbRzxqt3yOIt KUgQ== X-Forwarded-Encrypted: i=1; AJvYcCWxxcSeZjMAvQqEsYfEXFoZMo6nbRU8zQ+JWu7x5CESRLUtotSBV60BbsdmL8ug51MiinLJXFcckZ6VWcZesaSRmKz1AMcEMyKUolPr X-Gm-Message-State: AOJu0Yx4rkvlsWyo7K1T3MylkJZszpkh1HWRtwqHttjb1Hm3hJHNcox9 H8DRHJMkFA9vRj42Rp8tX8NGzw9FFtU+cv2mpbPiyxkz7pHLqWbfXvNpi5n6Pp7X+39kD/DcrG1 CGw== X-Google-Smtp-Source: AGHT+IF1l0N2egM3aSC98LzaXNROU1+O+6Y4xqmw+dsS00Fx32Wnx7e/F2IaRaJEP8IIHWZ1DYSFqw== X-Received: by 2002:a0c:dc14:0:b0:696:22ae:eb67 with SMTP id s20-20020a0cdc14000000b0069622aeeb67mr4027527qvk.33.1710902545749; Tue, 19 Mar 2024 19:42:25 -0700 (PDT) Received: from localhost (pool-74-98-221-57.pitbpa.fios.verizon.net. [74.98.221.57]) by smtp.gmail.com with UTF8SMTPSA id g15-20020a0562140acf00b0069150ebcc30sm7204402qvi.76.2024.03.19.19.42.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 19 Mar 2024 19:42:25 -0700 (PDT) From: kaiyang2@cs.cmu.edu To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Kaiyang Zhao , hannes@cmpxchg.org, ziy@nvidia.com, dskarlat@cs.cmu.edu Subject: [RFC PATCH 7/7] exports the number of pages scanned on behalf of movable/unmovable allocations Date: Wed, 20 Mar 2024 02:42:18 +0000 Message-Id: <20240320024218.203491-8-kaiyang2@cs.cmu.edu> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240320024218.203491-1-kaiyang2@cs.cmu.edu> References: <20240320024218.203491-1-kaiyang2@cs.cmu.edu> Reply-To: Kaiyang Zhao Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Kaiyang Zhao exports the number of pages scanned on behalf of movable/unmovable allocations in vmstat Signed-off-by: Kaiyang Zhao --- include/linux/vm_event_item.h | 2 ++ mm/vmscan.c | 11 +++++++++++ mm/vmstat.c | 2 ++ 3 files changed, 15 insertions(+) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index c9183117c8f7..dcfff56c6d29 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -50,6 +50,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PGSCAN_DIRECT_THROTTLE, PGSCAN_ANON, PGSCAN_FILE, + PGSCAN_MOVABLE, /* number of pages scanned on behalf of a movable all= ocation */ + PGSCAN_UNMOVABLE, PGSTEAL_ANON, PGSTEAL_FILE, #ifdef CONFIG_NUMA diff --git a/mm/vmscan.c b/mm/vmscan.c index ed0f47e2e810..4eadf0254918 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -904,6 +904,12 @@ static unsigned long do_shrink_slab(struct shrink_cont= rol *shrinkctl, cond_resched(); } =20 + /* Arbitrarily consider 16 pages scanned */ + if (is_migrate_movable(gfp_migratetype(shrinkctl->gfp_mask))) + count_vm_events(PGSCAN_MOVABLE, 16); + else + count_vm_events(PGSCAN_UNMOVABLE, 16); + /* * The deferred work is increased by any new work (delta) that wasn't * done, decreased by old deferred work that was done now. @@ -2580,6 +2586,11 @@ static unsigned long shrink_inactive_list(unsigned l= ong nr_to_scan, __count_memcg_events(lruvec_memcg(lruvec), item, nr_scanned); __count_vm_events(PGSCAN_ANON + file, nr_scanned); =20 + if (is_migrate_movable(gfp_migratetype(sc->gfp_mask))) + __count_vm_events(PGSCAN_MOVABLE, nr_scanned); + else + __count_vm_events(PGSCAN_UNMOVABLE, nr_scanned); + spin_unlock_irq(&lruvec->lru_lock); =20 if (nr_taken =3D=3D 0) diff --git a/mm/vmstat.c b/mm/vmstat.c index 444740605f2f..56062d53a36c 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1281,6 +1281,8 @@ const char * const vmstat_text[] =3D { "pgscan_direct_throttle", "pgscan_anon", "pgscan_file", + "pgscan_by_movable", + "pgscan_by_unmovable", "pgsteal_anon", "pgsteal_file", =20 --=20 2.40.1