From: Suren Baghdasaryan <surenb@google.com>
To: akpm@linux-foundation.org
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Subject: [PATCH v3 20/35] lib: add codetag reference into slabobj_ext
Date: Mon, 12 Feb 2024 13:39:06 -0800 [thread overview]
Message-ID: <20240212213922.783301-21-surenb@google.com> (raw)
In-Reply-To: <20240212213922.783301-1-surenb@google.com>
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>
---
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.
--
2.43.0.687.g38aa6559b0-goog
next prev parent reply other threads:[~2024-02-12 21:40 UTC|newest]
Thread overview: 208+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-12 21:38 [PATCH v3 00/35] Memory allocation profiling Suren Baghdasaryan
2024-02-12 21:38 ` [PATCH v3 01/35] lib/string_helpers: Add flags param to string_get_size() Suren Baghdasaryan
2024-02-12 22:09 ` Kees Cook
2024-02-13 8:26 ` Andy Shevchenko
2024-02-13 8:29 ` Andy Shevchenko
2024-02-13 23:55 ` Kent Overstreet
2024-02-13 22:06 ` Kent Overstreet
2024-02-29 20:54 ` Andy Shevchenko
2024-02-14 20:11 ` Matthew Wilcox
2024-02-12 21:38 ` [PATCH v3 02/35] scripts/kallysms: Always include __start and __stop symbols Suren Baghdasaryan
2024-02-12 22:06 ` Kees Cook
2024-02-12 21:38 ` [PATCH v3 03/35] fs: Convert alloc_inode_sb() to a macro Suren Baghdasaryan
2024-02-12 22:07 ` Kees Cook
2024-02-12 21:38 ` [PATCH v3 04/35] mm: enumerate all gfp flags Suren Baghdasaryan
2024-02-12 22:10 ` Kees Cook
2024-02-12 21:38 ` [PATCH v3 05/35] mm: introduce slabobj_ext to support slab object extensions Suren Baghdasaryan
2024-02-12 22:14 ` Kees Cook
2024-02-13 2:20 ` Suren Baghdasaryan
2024-02-14 17:59 ` Vlastimil Babka
2024-02-14 19:19 ` Suren Baghdasaryan
2024-02-12 21:38 ` [PATCH v3 06/35] mm: introduce __GFP_NO_OBJ_EXT flag to selectively prevent slabobj_ext creation Suren Baghdasaryan
2024-02-12 22:14 ` Kees Cook
2024-02-12 21:38 ` [PATCH v3 07/35] mm/slab: introduce SLAB_NO_OBJ_EXT to avoid obj_ext creation Suren Baghdasaryan
2024-02-12 22:14 ` Kees Cook
2024-02-15 21:31 ` Vlastimil Babka
2024-02-15 21:37 ` Kent Overstreet
2024-02-15 21:50 ` Vlastimil Babka
2024-02-15 22:10 ` Suren Baghdasaryan
2024-02-16 18:41 ` Suren Baghdasaryan
2024-02-16 18:49 ` Vlastimil Babka
2024-02-12 21:38 ` [PATCH v3 08/35] mm: prevent slabobj_ext allocations for slabobj_ext and kmem_cache objects Suren Baghdasaryan
2024-02-12 22:15 ` Kees Cook
2024-02-15 21:44 ` Vlastimil Babka
2024-02-15 22:13 ` Suren Baghdasaryan
2024-02-12 21:38 ` [PATCH v3 09/35] slab: objext: introduce objext_flags as extension to page_memcg_data_flags Suren Baghdasaryan
2024-02-12 22:15 ` Kees Cook
2024-02-12 21:38 ` [PATCH v3 10/35] lib: code tagging framework Suren Baghdasaryan
2024-02-12 22:27 ` Kees Cook
2024-02-13 2:04 ` Suren Baghdasaryan
2024-02-16 7:22 ` Suren Baghdasaryan
2024-02-12 21:38 ` [PATCH v3 11/35] lib: code tagging module support Suren Baghdasaryan
2024-02-12 21:38 ` [PATCH v3 12/35] lib: prevent module unloading if memory is not freed Suren Baghdasaryan
2024-02-12 21:38 ` [PATCH v3 13/35] lib: add allocation tagging support for memory allocation profiling Suren Baghdasaryan
2024-02-12 22:40 ` Kees Cook
2024-02-13 1:01 ` Suren Baghdasaryan
2024-02-13 22:28 ` Darrick J. Wong
2024-02-13 22:35 ` Suren Baghdasaryan
2024-02-13 22:38 ` Kees Cook
2024-02-13 22:47 ` Steven Rostedt
2024-02-16 8:50 ` Vlastimil Babka
2024-02-16 8:55 ` Suren Baghdasaryan
2024-02-16 23:26 ` Kent Overstreet
2024-02-17 0:08 ` Kees Cook
2024-02-16 0:54 ` Andrew Morton
2024-02-16 1:00 ` Kent Overstreet
2024-02-16 1:22 ` Pasha Tatashin
2024-02-16 1:27 ` Kent Overstreet
2024-02-16 9:02 ` Suren Baghdasaryan
2024-02-16 9:03 ` Suren Baghdasaryan
2024-02-16 17:18 ` Pasha Tatashin
2024-02-17 20:10 ` Kent Overstreet
2024-02-16 8:57 ` Vlastimil Babka
2024-02-18 2:21 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 14/35] lib: introduce support for page allocation tagging Suren Baghdasaryan
2024-02-16 9:45 ` Vlastimil Babka
2024-02-16 16:44 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 15/35] mm: percpu: increase PERCPU_MODULE_RESERVE to accommodate allocation tags Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 16/35] change alloc_pages name in dma_map_ops to avoid name conflicts Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 17/35] mm: enable page allocation tagging Suren Baghdasaryan
2024-02-12 22:59 ` Kees Cook
2024-02-12 21:39 ` [PATCH v3 18/35] mm: create new codetag references during page splitting Suren Baghdasaryan
2024-02-16 14:33 ` Vlastimil Babka
2024-02-16 16:46 ` Suren Baghdasaryan
2024-02-18 0:44 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 19/35] mm/page_ext: enable early_page_ext when CONFIG_MEM_ALLOC_PROFILING_DEBUG=y Suren Baghdasaryan
2024-02-12 21:39 ` Suren Baghdasaryan [this message]
2024-02-16 15:36 ` [PATCH v3 20/35] lib: add codetag reference into slabobj_ext Vlastimil Babka
2024-02-16 17:04 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 21/35] mm/slab: add allocation accounting into slab allocation and free paths Suren Baghdasaryan
2024-02-12 22:59 ` Kees Cook
2024-02-16 16:31 ` Vlastimil Babka
2024-02-16 16:38 ` Kent Overstreet
2024-02-16 17:11 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 22/35] mm/slab: enable slab allocation tagging for kmalloc and friends Suren Baghdasaryan
2024-02-12 23:01 ` Kees Cook
2024-02-16 16:52 ` Vlastimil Babka
2024-02-16 17:03 ` Kent Overstreet
2024-02-12 21:39 ` [PATCH v3 23/35] mm/slub: Mark slab_free_freelist_hook() __always_inline Suren Baghdasaryan
2024-02-13 0:31 ` Kees Cook
2024-02-13 0:34 ` Suren Baghdasaryan
2024-02-13 2:08 ` Kent Overstreet
2024-02-14 15:13 ` Vlastimil Babka
2024-02-15 4:04 ` Liam R. Howlett
2024-02-12 21:39 ` [PATCH v3 24/35] mempool: Hook up to memory allocation profiling Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 25/35] xfs: Memory allocation profiling fixups Suren Baghdasaryan
2024-02-14 22:22 ` Dave Chinner
2024-02-14 22:36 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 26/35] mm: percpu: Introduce pcpuobj_ext Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 27/35] mm: percpu: Add codetag reference into pcpuobj_ext Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 28/35] mm: percpu: enable per-cpu allocation tagging Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 29/35] mm: vmalloc: Enable memory allocation profiling Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 30/35] rhashtable: Plumb through alloc tag Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 31/35] lib: add memory allocations report in show_mem() Suren Baghdasaryan
2024-02-13 0:10 ` Kees Cook
2024-02-13 0:22 ` Steven Rostedt
2024-02-13 4:33 ` Kent Overstreet
2024-02-13 8:17 ` Suren Baghdasaryan
2024-02-15 9:22 ` Michal Hocko
2024-02-15 14:58 ` Suren Baghdasaryan
2024-02-15 16:44 ` Michal Hocko
2024-02-15 16:47 ` Suren Baghdasaryan
2024-02-15 18:29 ` Kent Overstreet
2024-02-15 18:33 ` Suren Baghdasaryan
2024-02-15 18:38 ` Kent Overstreet
2024-02-15 18:41 ` Michal Hocko
2024-02-15 18:49 ` Suren Baghdasaryan
2024-02-15 20:22 ` Vlastimil Babka
2024-02-15 20:33 ` Kent Overstreet
2024-02-15 21:54 ` Michal Hocko
2024-02-15 22:54 ` Kent Overstreet
2024-02-15 23:07 ` Steven Rostedt
2024-02-15 23:16 ` Steven Rostedt
2024-02-15 23:27 ` Steven Rostedt
2024-02-15 23:56 ` Kent Overstreet
2024-02-19 17:17 ` Suren Baghdasaryan
2024-02-20 16:23 ` Michal Hocko
2024-02-20 17:18 ` Kent Overstreet
2024-02-20 17:24 ` Michal Hocko
2024-02-20 17:32 ` Kent Overstreet
2024-02-20 18:27 ` Vlastimil Babka
2024-02-20 20:59 ` Suren Baghdasaryan
2024-02-21 13:21 ` Tetsuo Handa
2024-02-21 18:26 ` Suren Baghdasaryan
2024-02-15 23:19 ` Dave Hansen
2024-02-15 23:54 ` Kent Overstreet
2024-02-15 23:51 ` Kent Overstreet
2024-02-16 0:21 ` Steven Rostedt
2024-02-16 0:32 ` Kent Overstreet
2024-02-16 0:39 ` Steven Rostedt
2024-02-16 0:50 ` Kent Overstreet
2024-02-16 1:12 ` Steven Rostedt
2024-02-16 1:18 ` Kent Overstreet
2024-02-16 1:31 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 32/35] codetag: debug: skip objext checking when it's for objext itself Suren Baghdasaryan
2024-02-16 18:39 ` Vlastimil Babka
2024-02-19 1:04 ` Suren Baghdasaryan
2024-02-19 9:17 ` Vlastimil Babka
2024-02-19 16:55 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 33/35] codetag: debug: mark codetags for reserved pages as empty Suren Baghdasaryan
2024-02-12 22:45 ` Kees Cook
2024-02-13 0:15 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 34/35] codetag: debug: introduce OBJEXTS_ALLOC_FAIL to mark failed slab_ext allocations Suren Baghdasaryan
2024-02-12 22:49 ` Kees Cook
2024-02-13 0:09 ` Suren Baghdasaryan
2024-02-12 21:39 ` [PATCH v3 35/35] MAINTAINERS: Add entries for code tagging and memory allocation profiling Suren Baghdasaryan
2024-02-12 22:43 ` Kees Cook
2024-02-13 0:33 ` Suren Baghdasaryan
2024-02-13 0:14 ` [PATCH v3 00/35] Memory " Pasha Tatashin
2024-02-13 0:29 ` Kees Cook
2024-02-13 0:47 ` Suren Baghdasaryan
2024-02-13 12:24 ` Michal Hocko
2024-02-13 21:58 ` Suren Baghdasaryan
2024-02-13 22:04 ` David Hildenbrand
2024-02-13 22:09 ` Kent Overstreet
2024-02-13 22:17 ` David Hildenbrand
2024-02-13 22:29 ` Kent Overstreet
2024-02-13 23:11 ` Darrick J. Wong
2024-02-13 23:24 ` Kent Overstreet
2024-02-13 22:30 ` Suren Baghdasaryan
2024-02-13 22:48 ` David Hildenbrand
2024-02-13 22:50 ` Kent Overstreet
2024-02-13 22:57 ` David Hildenbrand
2024-02-13 22:59 ` Suren Baghdasaryan
2024-02-13 23:02 ` David Hildenbrand
2024-02-13 23:12 ` Kent Overstreet
2024-02-13 23:22 ` David Hildenbrand
2024-02-13 23:28 ` Suren Baghdasaryan
2024-02-13 23:54 ` Pasha Tatashin
2024-02-14 0:04 ` Kent Overstreet
2024-02-14 10:01 ` David Hildenbrand
2024-02-13 23:08 ` Kent Overstreet
2024-02-14 10:20 ` Vlastimil Babka
2024-02-14 16:38 ` Kent Overstreet
2024-02-14 15:00 ` Matthew Wilcox
2024-02-14 15:13 ` Kent Overstreet
2024-02-14 13:23 ` Michal Hocko
2024-02-14 16:55 ` Andrew Morton
2024-02-14 17:14 ` Suren Baghdasaryan
2024-02-14 17:52 ` Kent Overstreet
2024-02-14 19:24 ` Suren Baghdasaryan
2024-02-14 20:00 ` Kent Overstreet
2024-02-14 6:20 ` Johannes Weiner
2024-02-14 14:46 ` Michal Hocko
2024-02-14 15:01 ` Kent Overstreet
2024-02-14 16:02 ` Michal Hocko
2024-02-14 16:17 ` Kent Overstreet
2024-02-14 16:31 ` Michal Hocko
2024-02-14 17:14 ` Suren Baghdasaryan
2024-02-14 18:44 ` Andy Shevchenko
2024-02-14 18:51 ` Suren Baghdasaryan
2024-02-14 18:53 ` Tim Chen
2024-02-14 19:09 ` Suren Baghdasaryan
2024-02-14 20:17 ` Yosry Ahmed
2024-02-14 20:30 ` Suren Baghdasaryan
2024-02-14 22:59 ` Tim Chen
2024-02-16 8:38 ` Jani Nikula
2024-02-16 8:42 ` Kent Overstreet
2024-02-16 9:07 ` Jani Nikula
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