From: Kees Cook <kees@kernel.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Kees Cook <kees@kernel.org>, Randy Dunlap <rdunlap@infradead.org>,
Miguel Ojeda <ojeda@kernel.org>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Christoph Lameter <cl@linux.com>, Marco Elver <elver@google.com>,
Vegard Nossum <vegard.nossum@oracle.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Harry Yoo <harry.yoo@oracle.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Jann Horn <jannh@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
linux-mm@kvack.org, Nathan Chancellor <nathan@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
Jonathan Corbet <corbet@lwn.net>,
Jakub Kicinski <kuba@kernel.org>,
Yafang Shao <laoar.shao@gmail.com>,
Tony Ambardar <tony.ambardar@gmail.com>,
Alexander Lobakin <aleksander.lobakin@intel.com>,
Jan Hendrik Farr <kernel@jfarr.cc>,
Alexander Potapenko <glider@google.com>,
linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org,
linux-doc@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH v5 0/4] slab: Introduce kmalloc_obj() and family
Date: Fri, 21 Nov 2025 17:42:56 -0800 [thread overview]
Message-ID: <20251122014258.do.018-kees@kernel.org> (raw)
Hi,
Here's a refresh and update on the kmalloc_obj() API proposal for
discussion here and at LPC[1]. Please see patch 2 for the bulk of the
details. And note that this is obviously not v6.19 material! :)
The tree-wide patch for conversions is here:
https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?h=dev/v6.18-rc6/alloc_obj/v5&id=f79ee96ad6a3cafdb274fe15d3ae067724e72327
Thanks!
-Kees
[1] https://lpc.events/event/19/contributions/2136/
v5:
- switch to using assignment with type as first argument (Linus)
- fix various comment, commit log, and kern-docs (Randy, Miguel)
- renamed flex_counter internal helpers with "__" prefix (Przemek)
v4: https://lore.kernel.org/lkml/20250315025852.it.568-kees@kernel.org/
v3: https://lore.kernel.org/lkml/20240822231324.make.666-kees@kernel.org/
v2: https://lore.kernel.org/lkml/20240807235433.work.317-kees@kernel.org/
v1: https://lore.kernel.org/lkml/20240719192744.work.264-kees@kernel.org/
Kees Cook (4):
compiler_types: Introduce __flex_counter() and family
slab: Introduce kmalloc_obj() and family
checkpatch: Suggest kmalloc_obj family for sizeof allocations
coccinelle: Add kmalloc_objs conversion script
scripts/checkpatch.pl | 39 ++++-
scripts/coccinelle/api/kmalloc_objs.cocci | 168 +++++++++++++++++++++
Documentation/process/deprecated.rst | 42 ++++++
include/linux/compiler_types.h | 31 ++++
include/linux/overflow.h | 40 +++++
include/linux/slab.h | 172 ++++++++++++++++++++++
6 files changed, 486 insertions(+), 6 deletions(-)
create mode 100644 scripts/coccinelle/api/kmalloc_objs.cocci
--
2.34.1
next reply other threads:[~2025-11-22 1:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-22 1:42 Kees Cook [this message]
2025-11-22 1:42 ` [PATCH v5 1/4] compiler_types: Introduce __flex_counter() and family Kees Cook
2025-11-22 1:42 ` [PATCH v5 2/4] slab: Introduce kmalloc_obj() " Kees Cook
2025-11-22 19:53 ` Linus Torvalds
2025-11-22 20:54 ` Linus Torvalds
2025-11-22 1:42 ` [PATCH v5 3/4] checkpatch: Suggest kmalloc_obj family for sizeof allocations Kees Cook
2025-11-22 4:51 ` Joe Perches
2025-11-22 1:43 ` [PATCH v5 4/4] coccinelle: Add kmalloc_objs conversion script Kees Cook
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