From nobody Thu Dec 18 18:02:49 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D51DCC5AD4C for ; Mon, 20 Nov 2023 18:35:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233954AbjKTSft (ORCPT ); Mon, 20 Nov 2023 13:35:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232459AbjKTSe4 (ORCPT ); Mon, 20 Nov 2023 13:34:56 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDCB9110; Mon, 20 Nov 2023 10:34:45 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 150A71F8AB; Mon, 20 Nov 2023 18:34:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1700505284; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=66Fcft8CxLuyGHKa/ns5P/AtbVP/SvETjQ6dsoMJ/dY=; b=lMWFwPyefenNyh7/clvx/qk+stHQQ5N7hb9zBmCMeupxTPI+D6dGU/TADQ1u5M32UH+IBC fbQGY+u8lJJ8xR7VIM1PukvUBJEbUUw6tEAIWsnx+w1U5RfwCcRoqU/FIRxofF8z90UkRm 3dW6SMf1sSFeVNgXgr0JhhA3Fozsnbk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1700505284; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=66Fcft8CxLuyGHKa/ns5P/AtbVP/SvETjQ6dsoMJ/dY=; b=2WYXGethB6aGSlwwFVtp6ZCxtnU8BDR7TlSKHnTc/eY0M0e5JG5Si0/T6HS0tBqTGGaxCU vUR3uQ9DA9xC1JCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id C8DFC13912; Mon, 20 Nov 2023 18:34:43 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id ULBvMMOmW2UUMgAAMHmgww (envelope-from ); Mon, 20 Nov 2023 18:34:43 +0000 From: Vlastimil Babka Date: Mon, 20 Nov 2023 19:34:30 +0100 Subject: [PATCH v2 19/21] mm/slub: remove slab_alloc() and __kmem_cache_alloc_lru() wrappers MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20231120-slab-remove-slab-v2-19-9c9c70177183@suse.cz> References: <20231120-slab-remove-slab-v2-0-9c9c70177183@suse.cz> In-Reply-To: <20231120-slab-remove-slab-v2-0-9c9c70177183@suse.cz> To: David Rientjes , Christoph Lameter , Pekka Enberg , Joonsoo Kim Cc: Andrew Morton , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Roman Gushchin , Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , Marco Elver , Johannes Weiner , Michal Hocko , Shakeel Butt , Muchun Song , Kees Cook , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org, linux-hardening@vger.kernel.org, Vlastimil Babka X-Mailer: b4 0.12.4 Authentication-Results: smtp-out2.suse.de; none X-Spamd-Result: default: False [1.30 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(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)[]; MID_RHS_MATCH_FROM(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_RATELIMIT(0.00)[to_ip_from(RL563rtnmcmc9sawm86hmgtctc)]; BAYES_SPAM(5.10)[100.00%]; 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)[24]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_CC(0.00)[linux-foundation.org,gmail.com,linux.dev,google.com,arm.com,cmpxchg.org,kernel.org,chromium.org,kvack.org,vger.kernel.org,googlegroups.com,suse.cz]; RCVD_COUNT_TWO(0.00)[2]; SUSPICIOUS_RECIPS(1.50)[] Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org slab_alloc() is a thin wrapper around slab_alloc_node() with only one caller. Replace with direct call of slab_alloc_node(). __kmem_cache_alloc_lru() itself is a thin wrapper with two callers, so replace it with direct calls of slab_alloc_node() and trace_kmem_cache_alloc(). This also makes sure _RET_IP_ has always the expected value and not depending on inlining decisions. Reviewed-by: Kees Cook Signed-off-by: Vlastimil Babka Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> --- mm/slub.c | 25 +++++++++---------------- 1 file changed, 9 insertions(+), 16 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index d6bc15929d22..5683f1d02e4f 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3821,33 +3821,26 @@ static __fastpath_inline void *slab_alloc_node(stru= ct kmem_cache *s, struct list return object; } =20 -static __fastpath_inline void *slab_alloc(struct kmem_cache *s, struct lis= t_lru *lru, - gfp_t gfpflags, unsigned long addr, size_t orig_size) -{ - return slab_alloc_node(s, lru, gfpflags, NUMA_NO_NODE, addr, orig_size); -} - -static __fastpath_inline -void *__kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru, - gfp_t gfpflags) +void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags) { - void *ret =3D slab_alloc(s, lru, gfpflags, _RET_IP_, s->object_size); + void *ret =3D slab_alloc_node(s, NULL, gfpflags, NUMA_NO_NODE, _RET_IP_, + s->object_size); =20 trace_kmem_cache_alloc(_RET_IP_, ret, s, gfpflags, NUMA_NO_NODE); =20 return ret; } - -void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags) -{ - return __kmem_cache_alloc_lru(s, NULL, gfpflags); -} EXPORT_SYMBOL(kmem_cache_alloc); =20 void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru, gfp_t gfpflags) { - return __kmem_cache_alloc_lru(s, lru, gfpflags); + void *ret =3D slab_alloc_node(s, lru, gfpflags, NUMA_NO_NODE, _RET_IP_, + s->object_size); + + trace_kmem_cache_alloc(_RET_IP_, ret, s, gfpflags, NUMA_NO_NODE); + + return ret; } EXPORT_SYMBOL(kmem_cache_alloc_lru); =20 --=20 2.42.1