diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2022-07-31 12:42:21 -0700 |
|---|---|---|
| committer | Suren Baghdasaryan <surenb@google.com> | 2024-02-11 10:45:51 -0800 |
| commit | 86f2cacfbb836b70400f7131f459559c766149db (patch) | |
| tree | 3389c499f1ffbd0a5df0aa6869f58a993600c548 | |
| parent | 94d95d2e22310f89213ba558dccf8a873e1c45c3 (diff) | |
lib: add codetag reference into slabobj_ext
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 <surenb@google.com>
Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | include/linux/memcontrol.h | 5 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 1 | ||||
| -rw-r--r-- | mm/slab.h | 4 |
3 files changed, 10 insertions, 0 deletions
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. |