From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 3ECE139920 for ; Tue, 24 Oct 2023 13:48:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--surenb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="f9hrpJ0K" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-59f61a639b9so61800457b3.1 for ; Tue, 24 Oct 2023 06:48:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1698155284; x=1698760084; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=nhDAtTQGKDGtY2/txJr7AfaYGvHf9XTIsotRfIG2XI4=; b=f9hrpJ0KUqws3vm9P7tq/2A5vRnUx5kd95eGQS9pi/Cv3xy243GLTUGVnhTSu99+cr mliCLxX0+AMTRybvpc7sVoYI74Ml0rE4APy+OQh2hII4VvzGeye6hdZlVhnqgXL+wekW MVTkMLThQVny15xT7y56QC/HAK2SkCYZY7EIZ9bc5iMUX3I3/iHdggab9se16Rn8I9x4 ZVk5l+95v+UYABuv4SALg2Eu/gEW9OXRtWRsVF8DB3nFvdnVHd+76ima8I+J1F9ddf8g pzL1OulOldbxSKhxYmloUiXkwL+CcCzUI7UByDdhP9FvYpi50aPbINGlG31F5a4MopD8 U7HA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698155284; x=1698760084; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=nhDAtTQGKDGtY2/txJr7AfaYGvHf9XTIsotRfIG2XI4=; b=w8cgnBf7kWI/zVif647ONJnLurpfw6J82BqeUx0Vj+cjkPEm2jOs/ioVY1EbkREG9r wwbIWK89JUdhm2ChnsyTwOCwwiiEw1YFzxfK30d5ITAxpl4UIQxo1QJkS9YyPJvVzG4C V8BIIOJAB8XM9BNpuZe/QIQA8IG5M9jQ113mCv1cigM2bTILDnKbWJTADWTwKsR1FBVp /mU/QdNRugzs/yLgxmOCUGjhEjt+j3qoSNGd5YRmbA1uqXIrO/wpSc1GmQytrokmdWat 3lvFCK5a+us5BossIWNenogTNTm7vB6EXsrA1P/Z0ijcWAxRc2TfxLRxPsPUhAL/dCBu zMHA== X-Gm-Message-State: AOJu0YxXmq7sSL+8NrG0NxLfSDmBayjTfOXWbkoBZRLc6KrAnmua8Q2/ PAwDfzn/ToBaX7JfHsd4mJBLaRzmQWE= X-Google-Smtp-Source: AGHT+IEqWGHLJsK7BvvDJRxELns2H70hhRTn4578toCcoqAqCoHJoeJS8HRj9/dFP0FFd7ukqdr613N1OPo= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:45ba:3318:d7a5:336a]) (user=surenb job=sendgmr) by 2002:a25:8541:0:b0:d89:b072:d06f with SMTP id f1-20020a258541000000b00d89b072d06fmr231639ybn.7.1698155283973; Tue, 24 Oct 2023 06:48:03 -0700 (PDT) Date: Tue, 24 Oct 2023 06:46:34 -0700 In-Reply-To: <20231024134637.3120277-1-surenb@google.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20231024134637.3120277-1-surenb@google.com> X-Mailer: git-send-email 2.42.0.758.gaed0368e0e-goog Message-ID: <20231024134637.3120277-38-surenb@google.com> Subject: [PATCH v2 37/39] codetag: debug: mark codetags for reserved pages as empty From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, ldufour@linux.ibm.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, pasha.tatashin@soleen.com, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, vvvvvv@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, surenb@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org Content-Type: text/plain; charset="UTF-8" To avoid debug warnings while freeing reserved pages which were not allocated with usual allocators, mark their codetags as empty before freeing. Maybe we can annotate reserved pages correctly and avoid this? Signed-off-by: Suren Baghdasaryan --- include/linux/alloc_tag.h | 2 ++ include/linux/mm.h | 8 ++++++++ include/linux/pgalloc_tag.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/include/linux/alloc_tag.h b/include/linux/alloc_tag.h index 1f3207097b03..102caf62c2a9 100644 --- a/include/linux/alloc_tag.h +++ b/include/linux/alloc_tag.h @@ -95,6 +95,7 @@ static inline void set_codetag_empty(union codetag_ref *ref) #else /* CONFIG_MEM_ALLOC_PROFILING_DEBUG */ static inline bool is_codetag_empty(union codetag_ref *ref) { return false; } +static inline void set_codetag_empty(union codetag_ref *ref) {} #endif /* CONFIG_MEM_ALLOC_PROFILING_DEBUG */ @@ -155,6 +156,7 @@ static inline void alloc_tag_sub(union codetag_ref *ref, size_t bytes) {} static inline void alloc_tag_sub_noalloc(union codetag_ref *ref, size_t bytes) {} static inline void alloc_tag_add(union codetag_ref *ref, struct alloc_tag *tag, size_t bytes) {} +static inline void set_codetag_empty(union codetag_ref *ref) {} #endif diff --git a/include/linux/mm.h b/include/linux/mm.h index bf5d0b1b16f4..310129414833 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -5,6 +5,7 @@ #include #include #include +#include #include #include #include @@ -3077,6 +3078,13 @@ extern void reserve_bootmem_region(phys_addr_t start, /* Free the reserved page into the buddy system, so it gets managed. */ static inline void free_reserved_page(struct page *page) { + union codetag_ref *ref; + + ref = get_page_tag_ref(page); + if (ref) { + set_codetag_empty(ref); + put_page_tag_ref(ref); + } ClearPageReserved(page); init_page_count(page); __free_page(page); diff --git a/include/linux/pgalloc_tag.h b/include/linux/pgalloc_tag.h index 0174aff5e871..ae9b0f359264 100644 --- a/include/linux/pgalloc_tag.h +++ b/include/linux/pgalloc_tag.h @@ -93,6 +93,8 @@ static inline void pgalloc_tag_split(struct page *page, unsigned int nr) #else /* CONFIG_MEM_ALLOC_PROFILING */ +static inline union codetag_ref *get_page_tag_ref(struct page *page) { return NULL; } +static inline void put_page_tag_ref(union codetag_ref *ref) {} static inline void pgalloc_tag_add(struct page *page, struct task_struct *task, unsigned int order) {} static inline void pgalloc_tag_sub(struct page *page, unsigned int order) {} -- 2.42.0.758.gaed0368e0e-goog