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AJvYcCXpR3ac1UuPiQ+skUX0SVDUfnzdGe0CFdvqdtkLgy98AxZuSATITQBUGaUayxWTGgzMzmD9t8KttqfMf94IS3oISAM= X-Gm-Message-State: AOJu0YyoYEV5RP69DCPdmh1Lww04HkSnfgd7vmnKL5hWLZeiTB+ECwtz HKIm8BcLz5gvYnChNLF6kPBnjSad0z8EQWBa/bprVLbmQYlRl3tXXKSnGHPj4SWIE81Ce3P0pmK FDw== 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> 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 X-Rspam-User: X-Stat-Signature: wjs88jo1kc9zybqh3oyyt3hfd7xnbiqm X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 337DC160009 X-HE-Tag: 1707774017-699410 X-HE-Meta: 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 BLua4+DX 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 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: 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 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); 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 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, 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.