From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B1BBC10F11 for ; Wed, 24 Apr 2019 04:35:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED857218DA for ; Wed, 24 Apr 2019 04:35:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="bHFYCX9d" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726425AbfDXEaB (ORCPT ); Wed, 24 Apr 2019 00:30:01 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:44840 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725934AbfDXEaA (ORCPT ); Wed, 24 Apr 2019 00:30:00 -0400 Received: from pps.filterd (m0044012.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3O4Txcq031028 for ; Tue, 23 Apr 2019 21:29:59 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=DYe1Kczls7Vz3TOywv3SCxyloB0ylRoW+6/MG/k28Aw=; b=bHFYCX9dNv+cHnVzRdmj18VbL4bDaxiJJyLgc94iTPCfRd9wNi3dL/rByW9imQZa6iGr kACIO/RjRo+g9bmaNvlqG0vBB/KS4n/qab2mlGo2lBZ6N+pY8AiRkfvXFNklVhQHI0sR qBwXvEKBnK4lJsv6nu2Q33NJFu6LmyVS0aY= Authentication-Results: fb.com; spf=pass smtp.mailfrom=guro@fb.com Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2s28tp27fe-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 23 Apr 2019 21:29:59 -0700 Received: from mx-out.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 23 Apr 2019 21:29:52 -0700 Received: by devvm2643.prn2.facebook.com (Postfix, from userid 111017) id CBFA01142D2E6; Tue, 23 Apr 2019 14:31:36 -0700 (PDT) Smtp-Origin-Hostprefix: devvm From: Roman Gushchin Smtp-Origin-Hostname: devvm2643.prn2.facebook.com To: Andrew Morton CC: , , , Johannes Weiner , Michal Hocko , Rik van Riel , Shakeel Butt , Christoph Lameter , Vladimir Davydov , , Roman Gushchin Smtp-Origin-Cluster: prn2c23 Subject: [PATCH v2 4/6] mm: unify SLAB and SLUB page accounting Date: Tue, 23 Apr 2019 14:31:31 -0700 Message-ID: <20190423213133.3551969-5-guro@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190423213133.3551969-1-guro@fb.com> References: <20190423213133.3551969-1-guro@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-24_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904240037 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently the page accounting code is duplicated in SLAB and SLUB internals. Let's move it into new (un)charge_slab_page helpers in the slab_common.c file. These helpers will be responsible for statistics (global and memcg-aware) and memcg charging. So they are replacing direct memcg_(un)charge_slab() calls. Signed-off-by: Roman Gushchin --- mm/slab.c | 19 +++---------------- mm/slab.h | 22 ++++++++++++++++++++++ mm/slub.c | 14 ++------------ 3 files changed, 27 insertions(+), 28 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 14466a73d057..53e6b2687102 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1389,7 +1389,6 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, int nodeid) { struct page *page; - int nr_pages; flags |= cachep->allocflags; @@ -1399,17 +1398,11 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, return NULL; } - if (memcg_charge_slab(page, flags, cachep->gfporder, cachep)) { + if (charge_slab_page(page, flags, cachep->gfporder, cachep)) { __free_pages(page, cachep->gfporder); return NULL; } - nr_pages = (1 << cachep->gfporder); - if (cachep->flags & SLAB_RECLAIM_ACCOUNT) - mod_lruvec_page_state(page, NR_SLAB_RECLAIMABLE, nr_pages); - else - mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, nr_pages); - __SetPageSlab(page); /* Record if ALLOC_NO_WATERMARKS was set when allocating the slab */ if (sk_memalloc_socks() && page_is_pfmemalloc(page)) @@ -1424,12 +1417,6 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, static void kmem_freepages(struct kmem_cache *cachep, struct page *page) { int order = cachep->gfporder; - unsigned long nr_freed = (1 << order); - - if (cachep->flags & SLAB_RECLAIM_ACCOUNT) - mod_lruvec_page_state(page, NR_SLAB_RECLAIMABLE, -nr_freed); - else - mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE, -nr_freed); BUG_ON(!PageSlab(page)); __ClearPageSlabPfmemalloc(page); @@ -1438,8 +1425,8 @@ static void kmem_freepages(struct kmem_cache *cachep, struct page *page) page->mapping = NULL; if (current->reclaim_state) - current->reclaim_state->reclaimed_slab += nr_freed; - memcg_uncharge_slab(page, order, cachep); + current->reclaim_state->reclaimed_slab += 1 << order; + uncharge_slab_page(page, order, cachep); __free_pages(page, order); } diff --git a/mm/slab.h b/mm/slab.h index 4a261c97c138..0f5c5444acf1 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -205,6 +205,12 @@ ssize_t slabinfo_write(struct file *file, const char __user *buffer, void __kmem_cache_free_bulk(struct kmem_cache *, size_t, void **); int __kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **); +static inline int cache_vmstat_idx(struct kmem_cache *s) +{ + return (s->flags & SLAB_RECLAIM_ACCOUNT) ? + NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE; +} + #ifdef CONFIG_MEMCG_KMEM /* List of all root caches. */ @@ -352,6 +358,22 @@ static inline void memcg_link_cache(struct kmem_cache *s, #endif /* CONFIG_MEMCG_KMEM */ +static __always_inline int charge_slab_page(struct page *page, + gfp_t gfp, int order, + struct kmem_cache *s) +{ + memcg_charge_slab(page, gfp, order, s); + mod_lruvec_page_state(page, cache_vmstat_idx(s), 1 << order); + return 0; +} + +static __always_inline void uncharge_slab_page(struct page *page, int order, + struct kmem_cache *s) +{ + mod_lruvec_page_state(page, cache_vmstat_idx(s), -(1 << order)); + memcg_uncharge_slab(page, order, s); +} + static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) { struct kmem_cache *cachep; diff --git a/mm/slub.c b/mm/slub.c index 195f61785c7d..90563c0b3b5f 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1499,7 +1499,7 @@ static inline struct page *alloc_slab_page(struct kmem_cache *s, else page = __alloc_pages_node(node, flags, order); - if (page && memcg_charge_slab(page, flags, order, s)) { + if (page && charge_slab_page(page, flags, order, s)) { __free_pages(page, order); page = NULL; } @@ -1692,11 +1692,6 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) if (!page) return NULL; - mod_lruvec_page_state(page, - (s->flags & SLAB_RECLAIM_ACCOUNT) ? - NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE, - 1 << oo_order(oo)); - inc_slabs_node(s, page_to_nid(page), page->objects); return page; @@ -1730,18 +1725,13 @@ static void __free_slab(struct kmem_cache *s, struct page *page) check_object(s, page, p, SLUB_RED_INACTIVE); } - mod_lruvec_page_state(page, - (s->flags & SLAB_RECLAIM_ACCOUNT) ? - NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE, - -pages); - __ClearPageSlabPfmemalloc(page); __ClearPageSlab(page); page->mapping = NULL; if (current->reclaim_state) current->reclaim_state->reclaimed_slab += pages; - memcg_uncharge_slab(page, order, s); + uncharge_slab_page(page, order, s); __free_pages(page, order); } -- 2.20.1