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Tue, 20 Feb 2024 16:58:45 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id GJHYBUXa1GVKXQAAD6G6ig (envelope-from ); Tue, 20 Feb 2024 16:58:45 +0000 From: Vlastimil Babka Date: Tue, 20 Feb 2024 17:58:25 +0100 Subject: [PATCH 1/3] mm, slab: deprecate SLAB_MEM_SPREAD flag Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240220-slab-cleanup-flags-v1-1-e657e373944a@suse.cz> References: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> In-Reply-To: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> To: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino Cc: Zheng Yejian , Xiongwei Song , Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, Vlastimil Babka , Steven Rostedt X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1731; i=vbabka@suse.cz; h=from:subject:message-id; bh=OddJ5DHeDgks/i1mqhLaA/c2lRjGQhZqtVTweHMQxDw=; b=owEBbQGS/pANAwAIAbvgsHXSRYiaAcsmYgBl1No9wmY1D3tW/Cy64eGuViYQaGuyi/p0I9ZML 1aOynVc32uJATMEAAEIAB0WIQR7u8hBFZkjSJZITfG74LB10kWImgUCZdTaPQAKCRC74LB10kWI mgcCB/9ah3oEc1eVnw/8rJfS4V2CrkLLtkwjbxIk0QO1Y0hJK6fdAYScMioTiqBbFz2fYneiEib unIEdHVvpl+axQ6ErHTm8ti5I3TyU4MWWs83wr4c2KDwr6M1dl/PvpBvMynOrlEipojbhKdzBUG M7r0KCDPswYFY/bWZNDMSglmuV4rdwkzWpAlBnmUSK1ARpf/CL/dLuc8EoPraztYVvBTuVl7/sS yeaXUhG1SHr+j+ewEl+8Ng27ejIu7HOiappS80WyxN0awRxddapuB+uGZB7Oe88F1qMmz88+5/T Zwh17MejM5IUm/PPb+QCsLgpmJBon11M/C4qFpCzuDCoY2ct X-Developer-Key: i=vbabka@suse.cz; a=openpgp; fpr=A940D434992C2E8E99103D50224FA7E7CC82A664 Authentication-Results: smtp-out1.suse.de; none X-Spam-Level: X-Spam-Score: -3.81 X-Spamd-Result: default: False [-3.81 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; REPLY(-4.00)[]; BAYES_HAM(-0.01)[46.40%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_RATELIMIT(0.00)[to_ip_from(RLqdadssyy1w6u3twx3pq4jyny)]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCPT_COUNT_TWELVE(0.00)[20]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:email]; FREEMAIL_TO(0.00)[linux.com,kernel.org,google.com,lge.com,linux-foundation.org,linux.dev,gmail.com,arm.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-Spam-Flag: NO The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was removed. SLUB instead relies on the page allocator's NUMA policies. Change the flag's value to 0 to free up the value it had, and mark it for full removal once all users are gone. Reported-by: Steven Rostedt Closes: https://lore.kernel.org/all/20240131172027.10f64405@gandalf.local.h= ome/ Signed-off-by: Vlastimil Babka Reviewed-by: Chengming Zhou Reviewed-by: Roman Gushchin --- include/linux/slab.h | 5 +++-- mm/slab.h | 1 - 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index b5f5ee8308d0..6252f44115c2 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -96,8 +96,6 @@ */ /* Defer freeing slabs to RCU */ #define SLAB_TYPESAFE_BY_RCU ((slab_flags_t __force)0x00080000U) -/* Spread some memory over cpuset */ -#define SLAB_MEM_SPREAD ((slab_flags_t __force)0x00100000U) /* Trace allocations and frees */ #define SLAB_TRACE ((slab_flags_t __force)0x00200000U) =20 @@ -164,6 +162,9 @@ #endif #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ =20 +/* Obsolete unused flag, to be removed */ +#define SLAB_MEM_SPREAD 0 + /* * ZERO_SIZE_PTR will be returned for zero sized kmalloc requests. * diff --git a/mm/slab.h b/mm/slab.h index 54deeb0428c6..f4534eefb35d 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -469,7 +469,6 @@ static inline bool is_kmalloc_cache(struct kmem_cache *= s) SLAB_STORE_USER | \ SLAB_TRACE | \ SLAB_CONSISTENCY_CHECKS | \ - SLAB_MEM_SPREAD | \ SLAB_NOLEAKTRACE | \ SLAB_RECLAIM_ACCOUNT | \ SLAB_TEMPORARY | \ --=20 2.43.1