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 A9A76328AB for ; Tue, 24 Oct 2023 13:47:31 +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="4M26IhCT" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-5a90d6ab944so49806757b3.2 for ; Tue, 24 Oct 2023 06:47:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1698155250; x=1698760050; 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=dyxdpQkY+52gRKectHQ0ToMTqRIUgvQpNStJHRxgij8=; b=4M26IhCTWrEq2JYfLE/6LNbANk+8yr3OEGAhle34/RA5lwjUbmsBxHVDkpEdYp1rYY 0Gj3OEMiprOeaO4ysCK6rTKKahao5gHB15BhBokKeHCDKu3Td0uKts9L4SkPj03ROiUf ZlN3ShDVDFk+06acKoY39KxHet1V3v1pjANHI47eXI1Y8F41vWUtEalptn8DHkdOc1I9 oNHY6UpfSFdD467+lai/RxboEFnD6dgI4ZdM7DXD1Z1k6yQUYLXTNbBL6CD6g2WA+QjI HE656/UojkRy65Mq7jwR076hgbWhxRawpZCzKEMqctopM8MMFUi8S7j2FzEQDB6lY0Ot CUFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698155250; x=1698760050; 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=dyxdpQkY+52gRKectHQ0ToMTqRIUgvQpNStJHRxgij8=; b=NlogsMfq5VRNp9ZSInMRZjFa2WyQtp5sd21GI6mXTR0xpW194+2aCpneeEFpXmFry4 UgtALHVEWUP+b3EHcoNMgFHADG5kBLJHTKf5IS/5SxZbgVe0R4/cy0wpEmFoUomTpyyy IRw1IoAyFB1+AzLr4JBtw/aXZuM1z7Ek97jB5xvdT8rRTBh1dLWlPBpp9KwVoXfQ6z/Z tAzqgg2ZGFTpmfBXHy5J5LuD8MUfsm2k7tKenBUEBd7K8UfH2UBRb3qc2TA1yr5gIswn p/6rFTtmYlA5K9j1ILF7p3k7AK77+FKa7ym1OeGS/TFfdFx06yohJHMeCur4/yUtUreL bBPQ== X-Gm-Message-State: AOJu0YxXJBdq35q3r2tsG9j+IImov86ewc7rw5DLzmBWFJ4Pah62Jjpa QGmSspsMrU39hAwXyBCtbaMztojPpcU= X-Google-Smtp-Source: AGHT+IH6emT7vBUijCZAXTQg5qCnjqbhy63v478Fz+jbhTeMwMkT3/M97iqix7XYtIWpa3tPCFKbfUZWH1c= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:45ba:3318:d7a5:336a]) (user=surenb job=sendgmr) by 2002:a0d:d84a:0:b0:5a8:5653:3323 with SMTP id a71-20020a0dd84a000000b005a856533323mr243310ywe.2.1698155250598; Tue, 24 Oct 2023 06:47:30 -0700 (PDT) Date: Tue, 24 Oct 2023 06:46:19 -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: <20231024134637.3120277-23-surenb@google.com> Subject: [PATCH v2 22/39] lib: add codetag reference into slabobj_ext 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 store code tag for every slab object, a codetag reference is embedded into slabobj_ext when CONFIG_MEM_ALLOC_PROFILING=y. Signed-off-by: Suren Baghdasaryan Co-developed-by: Kent Overstreet Signed-off-by: Kent Overstreet --- include/linux/memcontrol.h | 5 +++++ lib/Kconfig.debug | 1 + mm/slab.h | 4 ++++ 3 files changed, 10 insertions(+) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index f3ede28b6fa6..853a24b5f713 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1613,7 +1613,12 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, * if MEMCG_DATA_OBJEXTS is set. */ struct slabobj_ext { +#ifdef CONFIG_MEMCG_KMEM struct obj_cgroup *objcg; +#endif +#ifdef CONFIG_MEM_ALLOC_PROFILING + union codetag_ref ref; +#endif } __aligned(8); static inline void __inc_lruvec_kmem_state(void *p, enum node_stat_item idx) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index e1eda1450d68..482a6aae7664 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -973,6 +973,7 @@ config MEM_ALLOC_PROFILING depends on !DEBUG_FORCE_WEAK_PER_CPU select CODE_TAGGING select PAGE_EXTENSION + select SLAB_OBJ_EXT help Track allocation source code and record total allocation size initiated at that code location. The mechanism can be used to track diff --git a/mm/slab.h b/mm/slab.h index 60417fd262ea..293210ed10a9 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -457,6 +457,10 @@ int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s, static inline bool need_slab_obj_ext(void) { +#ifdef CONFIG_MEM_ALLOC_PROFILING + if (mem_alloc_profiling_enabled()) + return true; +#endif /* * CONFIG_MEMCG_KMEM creates vector of obj_cgroup objects conditionally * inside memcg_slab_post_alloc_hook. No other users for now. -- 2.42.0.758.gaed0368e0e-goog