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AJvYcCUOr2lsPafRlM1KV4U4Cf53nqRJzCOp+R3Z68aQAoKkejr7PrErP+kzByCBQnRgywycAOPnWe+J1HMPaXYizUIYsagsC8y9uIDT0JdD X-Gm-Message-State: AOJu0Ywr/LtqpFyl0MGUAcHGD13/+TSTTfu0hMc6q/FopdQMNxjU7jGL +szx9XyZftvcXG/UnN/aZdHeiHM/vaewHR/Ah8foZLUhhT885AbG/eibu69cgFNNC4+UXBV4WQm vwA== X-Google-Smtp-Source: AGHT+IEjOAHzMTDk3G6Mkq9BQfM87/zY/tGgKD9M86mlp2G5yR63uKFbjyK/9+Jhrb/BiK/AnGAds8f8uig= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:b848:2b3f:be49:9cbc]) (user=surenb job=sendgmr) by 2002:a25:8391:0:b0:dc2:1cd6:346e with SMTP id t17-20020a258391000000b00dc21cd6346emr2029085ybk.8.1707774016324; Mon, 12 Feb 2024 13:40:16 -0800 (PST) Date: Mon, 12 Feb 2024 13:39:06 -0800 In-Reply-To: <20240212213922.783301-1-surenb@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240212213922.783301-1-surenb@google.com> X-Mailer: git-send-email 2.43.0.687.g38aa6559b0-goog Message-ID: <20240212213922.783301-21-surenb@google.com> Subject: [PATCH v3 20/35] 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, 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-Transfer-Encoding: quoted-printable 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=3Dy. 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 f3584e98b640..2b010316016c 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -1653,7 +1653,12 @@ 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); =20 static inline void __inc_lruvec_kmem_state(void *p, enum node_stat_item id= x) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7bbdb0ddb011..9ecfcdb54417 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -979,6 +979,7 @@ 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 77cf7474fe46..224a4b2305fb 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -569,6 +569,10 @@ int alloc_slab_obj_exts(struct slab *slab, struct kmem= _cache *s, =20 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. --=20 2.43.0.687.g38aa6559b0-goog