From patchwork Mon Jul 5 02:40:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WWVlIExlZSAo5p2O5bu66Kq8KQ==?= X-Patchwork-Id: 12357945 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MIME_BASE64_TEXT,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9734AC07E95 for ; Mon, 5 Jul 2021 02:41:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 277EA613D8 for ; Mon, 5 Jul 2021 02:41:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 277EA613D8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 525E46B0011; Sun, 4 Jul 2021 22:41:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4ADFD6B0036; Sun, 4 Jul 2021 22:41:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 327986B005D; Sun, 4 Jul 2021 22:41:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0131.hostedemail.com [216.40.44.131]) by kanga.kvack.org (Postfix) with ESMTP id 0702D6B0011 for ; Sun, 4 Jul 2021 22:41:25 -0400 (EDT) Received: from smtpin34.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 677E682499B9 for ; Mon, 5 Jul 2021 02:41:25 +0000 (UTC) X-FDA: 78326982930.34.F7C2390 Received: from mailgw01.mediatek.com (mailgw01.mediatek.com [216.200.240.184]) by imf26.hostedemail.com (Postfix) with ESMTP id 0A9E32001708 for ; Mon, 5 Jul 2021 02:41:22 +0000 (UTC) X-UUID: e3b4f13b6dac44b580815de580f45a55-20210704 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=B6t7erU9+iRByaPo4wC2X4X1SCmAAtDhr9EJz5GftOw=; b=qpGboqWQEb0Q3ci+l2Jvrsw489qOGK3/xSPwQVOz4muw/UkGSGR7Cc8wRbsZT/FKJ5Ww0HBIwUwbuKMt99suGYNt5Lp3n6bZzRGWXb3KvSlksEUi83XsYnEEofg2l1s0+EXG1SN2fAzJniISkcR5jqEsFe4PESxCv+BDArbl548=; X-UUID: e3b4f13b6dac44b580815de580f45a55-20210704 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1161700137; Sun, 04 Jul 2021 19:41:19 -0700 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 4 Jul 2021 19:41:17 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 5 Jul 2021 10:41:08 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 5 Jul 2021 10:41:08 +0800 From: To: CC: , , , , Marco Elver , Yee Lee , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Vlastimil Babka , "Matthias Brugger" , "open list:SLAB ALLOCATOR" , "moderated list:ARM/Mediatek SoC support" , "moderated list:ARM/Mediatek SoC support" Subject: [PATCH v5 1/2] mm: introduce helper to check slub_debug_enabled Date: Mon, 5 Jul 2021 10:40:57 +0800 Message-ID: <20210705024101.1567-2-yee.lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210705024101.1567-1-yee.lee@mediatek.com> References: <20210705024101.1567-1-yee.lee@mediatek.com> MIME-Version: 1.0 X-MTK: N Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=mediatek.com header.s=dk header.b=qpGboqWQ; spf=pass (imf26.hostedemail.com: domain of yee.lee@mediatek.com designates 216.200.240.184 as permitted sender) smtp.mailfrom=yee.lee@mediatek.com; dmarc=pass (policy=none) header.from=mediatek.com X-Stat-Signature: gfypz57rkpi9rx4m3d45yam8x3fsxubf X-Rspamd-Queue-Id: 0A9E32001708 X-Rspamd-Server: rspam06 X-HE-Tag: 1625452882-849977 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Marco Elver Introduce a helper to check slub_debug_enabled, so that we can confine the use of #ifdef to the definition of the slub_debug_enabled_unlikely() helper. Signed-off-by: Marco Elver Signed-off-by: Yee Lee Signed-off-by: Marco Elver --- mm/slab.h | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/mm/slab.h b/mm/slab.h index 7b60ef2f32c3..a11126afe24c 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -216,10 +216,18 @@ DECLARE_STATIC_KEY_FALSE(slub_debug_enabled); #endif extern void print_tracking(struct kmem_cache *s, void *object); long validate_slab_cache(struct kmem_cache *s); +static inline bool slub_debug_enabled_unlikely(void) +{ + return static_branch_unlikely(&slub_debug_enabled); +} #else static inline void print_tracking(struct kmem_cache *s, void *object) { } +static inline bool slub_debug_enabled_unlikely(void) +{ + return false; +} #endif /* @@ -229,11 +237,10 @@ static inline void print_tracking(struct kmem_cache *s, void *object) */ static inline bool kmem_cache_debug_flags(struct kmem_cache *s, slab_flags_t flags) { -#ifdef CONFIG_SLUB_DEBUG - VM_WARN_ON_ONCE(!(flags & SLAB_DEBUG_FLAGS)); - if (static_branch_unlikely(&slub_debug_enabled)) + if (IS_ENABLED(CONFIG_SLUB_DEBUG)) + VM_WARN_ON_ONCE(!(flags & SLAB_DEBUG_FLAGS)); + if (slub_debug_enabled_unlikely()) return s->flags & flags; -#endif return false; }