From patchwork Fri Mar 10 10:32:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vlastimil Babka X-Patchwork-Id: 13169138 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 C339EC6FD1C for ; Fri, 10 Mar 2023 10:32:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231370AbjCJKcZ (ORCPT ); Fri, 10 Mar 2023 05:32:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231166AbjCJKcT (ORCPT ); Fri, 10 Mar 2023 05:32:19 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 41169111B05; Fri, 10 Mar 2023 02:32:16 -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 C680520654; Fri, 10 Mar 2023 10:32:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1678444334; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wKAQjtPeEdruvdiu+k5gGLS8R7rVo9ZpEqr34/mOg1w=; b=jM/aSqo5eeEsG1bbB+HEHDUxiDbo5qCgxkS1lMdG/LTijo7v609GwIH6wOGPK5ENW25w5B aLm6T/mGGqOwcuE9DxA+GKqD2ccwar2W9/NBSOeEe5sv4m5mnrq+A1XLnPFkk6V8+rT26N 0xdaTOXfF4GxqANU4uwlYiu8VUgjyOs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1678444334; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wKAQjtPeEdruvdiu+k5gGLS8R7rVo9ZpEqr34/mOg1w=; b=ZxQ4ujXvWDQr+knM1ffeWycdMvA+7Hpc5bwayOqfox5fa6vKydvQWhBrjfL8vVJIsvKsYZ ruYlhz5R2udyovCQ== 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 89A8813592; Fri, 10 Mar 2023 10:32:14 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id UIQAIS4HC2SsXQAAMHmgww (envelope-from ); Fri, 10 Mar 2023 10:32:14 +0000 From: Vlastimil Babka To: Christoph Lameter , David Rientjes , Joonsoo Kim , Pekka Enberg Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>, Roman Gushchin , Andrew Morton , linux-mm@kvack.org, rcu@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, netdev@vger.kernel.org, linux-doc@vger.kernel.org, Vlastimil Babka , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Subject: [PATCH 2/7] net: skbuff: remove SLOB-specific ifdefs Date: Fri, 10 Mar 2023 11:32:04 +0100 Message-Id: <20230310103210.22372-3-vbabka@suse.cz> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310103210.22372-1-vbabka@suse.cz> References: <20230310103210.22372-1-vbabka@suse.cz> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org As the comment for HAVE_SKB_SMALL_HEAD_CACHE says: > skb_small_head_cache and related code is only supported > for CONFIG_SLAB and CONFIG_SLUB. > As soon as SLOB is removed from the kernel, we can clean up this. With CONFIG_SLOB removed, remove HAVE_SKB_SMALL_HEAD_CACHE and make all code that it guards unconditional. Signed-off-by: Vlastimil Babka Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni --- net/core/skbuff.c | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index eb7d33b41e71..8bba4e91d0d5 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -90,15 +90,6 @@ static struct kmem_cache *skbuff_fclone_cache __ro_after_init; static struct kmem_cache *skbuff_ext_cache __ro_after_init; #endif -/* skb_small_head_cache and related code is only supported - * for CONFIG_SLAB and CONFIG_SLUB. - * As soon as SLOB is removed from the kernel, we can clean up this. - */ -#if !defined(CONFIG_SLOB) -# define HAVE_SKB_SMALL_HEAD_CACHE 1 -#endif - -#ifdef HAVE_SKB_SMALL_HEAD_CACHE static struct kmem_cache *skb_small_head_cache __ro_after_init; #define SKB_SMALL_HEAD_SIZE SKB_HEAD_ALIGN(MAX_TCP_HEADER) @@ -115,7 +106,6 @@ static struct kmem_cache *skb_small_head_cache __ro_after_init; #define SKB_SMALL_HEAD_HEADROOM \ SKB_WITH_OVERHEAD(SKB_SMALL_HEAD_CACHE_SIZE) -#endif /* HAVE_SKB_SMALL_HEAD_CACHE */ int sysctl_max_skb_frags __read_mostly = MAX_SKB_FRAGS; EXPORT_SYMBOL(sysctl_max_skb_frags); @@ -514,7 +504,6 @@ static void *kmalloc_reserve(unsigned int *size, gfp_t flags, int node, void *obj; obj_size = SKB_HEAD_ALIGN(*size); -#ifdef HAVE_SKB_SMALL_HEAD_CACHE if (obj_size <= SKB_SMALL_HEAD_CACHE_SIZE && !(flags & KMALLOC_NOT_NORMAL_BITS)) { @@ -530,7 +519,6 @@ static void *kmalloc_reserve(unsigned int *size, gfp_t flags, int node, goto out; } } -#endif *size = obj_size = kmalloc_size_roundup(obj_size); /* * Try a regular allocation, when that fails and we're not entitled @@ -852,11 +840,9 @@ static bool skb_pp_recycle(struct sk_buff *skb, void *data) static void skb_kfree_head(void *head, unsigned int end_offset) { -#ifdef HAVE_SKB_SMALL_HEAD_CACHE if (end_offset == SKB_SMALL_HEAD_HEADROOM) kmem_cache_free(skb_small_head_cache, head); else -#endif kfree(head); } @@ -4692,7 +4678,6 @@ void __init skb_init(void) 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL); -#ifdef HAVE_SKB_SMALL_HEAD_CACHE /* usercopy should only access first SKB_SMALL_HEAD_HEADROOM bytes. * struct skb_shared_info is located at the end of skb->head, * and should not be copied to/from user. @@ -4704,7 +4689,6 @@ void __init skb_init(void) 0, SKB_SMALL_HEAD_HEADROOM, NULL); -#endif skb_extensions_init(); }