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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> 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 X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 95E2C40021 X-Stat-Signature: 1s9fhs3kipimb5ps4pyb1jj8z1iqp9ny X-Rspam-User: X-HE-Tag: 1698155251-380829 X-HE-Meta: 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 he9c9x// 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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 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.