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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BA4FC4332F for ; Thu, 9 Nov 2023 03:26:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E91208D00DA; Wed, 8 Nov 2023 22:26:00 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E40DD8D0073; Wed, 8 Nov 2023 22:26:00 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CE2C68D00DA; Wed, 8 Nov 2023 22:26:00 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id B95EB8D0073 for ; Wed, 8 Nov 2023 22:26:00 -0500 (EST) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 9957CA05A9 for ; Thu, 9 Nov 2023 03:26:00 +0000 (UTC) X-FDA: 81436976880.28.E92C271 Received: from out-172.mta1.migadu.com (out-172.mta1.migadu.com [95.215.58.172]) by imf11.hostedemail.com (Postfix) with ESMTP id E1B214000F for ; Thu, 9 Nov 2023 03:25:58 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=n5nLAt33; spf=pass (imf11.hostedemail.com: domain of jeff.xie@linux.dev designates 95.215.58.172 as permitted sender) smtp.mailfrom=jeff.xie@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1699500359; a=rsa-sha256; cv=none; b=v0s5wKyMG6cRktiELdMEsGxeikuJV4EztUGAkDO3U6/+o9xVEi9VfstTc0dI0yW8nJE6EP tB0bpqNaY4hECKBmAhhAL3pHmy5gp1W3Pmn8a6RUtkB0KfVNLltj3u092nZ/s841WHH5mA WsTI1iPo9FlHh2JeXr7ptfzRtiMD+mE= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=n5nLAt33; spf=pass (imf11.hostedemail.com: domain of jeff.xie@linux.dev designates 95.215.58.172 as permitted sender) smtp.mailfrom=jeff.xie@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1699500359; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=wNM/9AevUF/j2VNxIIJfzv4M+2rCeqcsvFMA+tau3Ik=; b=OFNNFe3RW77AR8q8/cdnhfr1h7qJZZTi//GMAgDYFEnfeoq/uTumWFinqA+ntrKY8x+IjZ 2SLMgdToTw+y+64UOesg4Xl/Trc1u4tUNZ7thEBpHpT+w4SIdbx742KRZupA0aL7vOnV6e qrqDCtEWDzyfbKmoocPFSrcoknZd6GM= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1699500357; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wNM/9AevUF/j2VNxIIJfzv4M+2rCeqcsvFMA+tau3Ik=; b=n5nLAt33vu68n5XOR8wfuoMwuOsrYmFbqUormWmo3tffPeqYeIiAiUe5LDLU86jzAvB8b7 i3Z0y+6mVqQQrIj2np5f3kbeRycc+XToQwL/sDcYB+8+ZUH+no3gv0dHD1+ZtvCMNJZPfa +4AihrFRti7/kLoDX6Sh56JxhizH7b8= From: Jeff Xie To: akpm@linux-foundation.org, iamjoonsoo.kim@lge.com, vbabka@suse.cz, cl@linux.com, penberg@kernel.org, rientjes@google.com, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, willy@infradead.org Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, chensong_2000@189.cn, xiehuan09@gmail.com, Jeff Xie Subject: [RFC][PATCH 2/4] mm, slub: implement slub allocate post callback for page_owner Date: Thu, 9 Nov 2023 11:25:19 +0800 Message-Id: <20231109032521.392217-3-jeff.xie@linux.dev> In-Reply-To: <20231109032521.392217-1-jeff.xie@linux.dev> References: <20231109032521.392217-1-jeff.xie@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: E1B214000F X-Stat-Signature: qgc81drf7it7nktu6qrxhy1mnrabetrg X-Rspam-User: X-HE-Tag: 1699500358-677951 X-HE-Meta: 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 0BVrVkbH 0ujNRjrI9b57wwaBpTdf7mSLQGjMHDBJVfWq/Q7eXLZy9ocoBFRhwckZ8CO+BZg4Kg5zfXTHYUUzcaTBqFBUz49+A1qh/htlcKVluO2X8N6unVydgecxtvMtTNxZC84cq3DwKctAM3a7VKr/mVT+4NzjGaY6dOqrIxee8LOMDnZOAbIAGL2UPSDM1j3I2uyghV1SmT9GW0K8cIt0= 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: List-Subscribe: List-Unsubscribe: Implement the callback function slab_alloc_post_page_owner for the page_owner to make the owner of the slab page clearer For example, for slab page, a line is added to the result of page_owner added: "SLAB_PAGE slab_name:kmalloc-32" Page allocated via order 0, mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 340615384 ns SLAB_PAGE slab_name:kmalloc-32 PFN 0x4be0 type Unmovable Block 37 type Unmovable Flags 0x1fffc0000000800(slab|node=0|zone=1|lastcpupid=0x3fff) post_alloc_hook+0x77/0xf0 get_page_from_freelist+0x58d/0x14e0 __alloc_pages+0x1b2/0x380 alloc_pages_mpol+0x97/0x1f0 allocate_slab+0x31f/0x410 ___slab_alloc+0x3e8/0x850 __kmem_cache_alloc_node+0x111/0x2b0 kmalloc_trace+0x29/0x90 iommu_setup_dma_ops+0x299/0x470 bus_iommu_probe+0xe1/0x150 iommu_device_register+0xad/0x120 intel_iommu_init+0xe3a/0x1260 pci_iommu_init+0x12/0x40 do_one_initcall+0x45/0x210 kernel_init_freeable+0x1a4/0x2e0 kernel_init+0x1a/0x1c0 added: "SLAB_PAGE slab_name:mm_struct" Page allocated via order 3, mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), \ pid 86, tgid 86 (linuxrc), ts 1121118666 ns SLAB_PAGE slab_name:mm_struct PFN 0x6388 type Unmovable Block 49 type Unmovable Flags 0x1fffc0000000840(slab|head|node=0|zone=1|lastcpupid=0x3fff) post_alloc_hook+0x77/0xf0 get_page_from_freelist+0x58d/0x14e0 __alloc_pages+0x1b2/0x380 alloc_pages_mpol+0x97/0x1f0 allocate_slab+0x31f/0x410 ___slab_alloc+0x3e8/0x850 kmem_cache_alloc+0x2b8/0x2f0 mm_alloc+0x1a/0x50 alloc_bprm+0x8a/0x300 do_execveat_common.isra.0+0x68/0x240 __x64_sys_execve+0x37/0x50 do_syscall_64+0x42/0xf0 entry_SYSCALL_64_after_hwframe+0x6e/0x76 Signed-off-by: Jeff Xie --- include/linux/slab.h | 8 +++++++- mm/slub.c | 15 +++++++++++++++ 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index d6d6ffeeb9a2..c8969eb4f322 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -795,5 +795,11 @@ int slab_dead_cpu(unsigned int cpu); #define slab_prepare_cpu NULL #define slab_dead_cpu NULL #endif - +#ifndef CONFIG_PAGE_OWNER +static inline int slab_alloc_post_page_owner(struct folio *folio, struct task_struct *tsk, + void *data, char *kbuf, size_t count) +{ + return 0; +} +#endif #endif /* _LINUX_SLAB_H */ diff --git a/mm/slub.c b/mm/slub.c index 63d281dfacdb..7ab8c7aa78e5 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -44,6 +44,7 @@ #include #include +#include #include "internal.h" @@ -1993,6 +1994,19 @@ static inline bool shuffle_freelist(struct kmem_cache *s, struct slab *slab) } #endif /* CONFIG_SLAB_FREELIST_RANDOM */ +#ifdef CONFIG_PAGE_OWNER +static int slab_alloc_post_page_owner(struct folio *folio, struct task_struct *tsk, + void *data, char *kbuf, size_t count) +{ + int ret; + struct kmem_cache *kmem_cache = data; + + ret = scnprintf(kbuf, count, "SLAB_PAGE slab_name:%s\n", kmem_cache->name); + + return ret; +} +#endif + static struct slab *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) { struct slab *slab; @@ -2028,6 +2042,7 @@ static struct slab *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) stat(s, ORDER_FALLBACK); } + set_folio_alloc_post_page_owner(slab_folio(slab), slab_alloc_post_page_owner, s); slab->objects = oo_objects(oo); slab->inuse = 0; slab->frozen = 0; -- 2.34.1