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[23.128.96.37]) by mx.google.com with ESMTPS id e20-20020a656894000000b005b8eaeabf49si4826111pgt.178.2023.11.18.07.55.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Nov 2023 07:55:23 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b="NGUiw/mL"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 3471B80BC524; Sat, 18 Nov 2023 07:55:22 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229761AbjKRPzM (ORCPT + 29 others); Sat, 18 Nov 2023 10:55:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44602 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231356AbjKRPxk (ORCPT ); Sat, 18 Nov 2023 10:53:40 -0500 Received: from mail-yb1-xb2c.google.com (mail-yb1-xb2c.google.com [IPv6:2607:f8b0:4864:20::b2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4DD2010E5 for ; Sat, 18 Nov 2023 07:51:57 -0800 (PST) Received: by mail-yb1-xb2c.google.com with SMTP id 3f1490d57ef6-da0cfcb9f40so2988934276.2 for ; Sat, 18 Nov 2023 07:51:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1700322716; x=1700927516; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=SNt2pqVZ1WV5AdCyxo2zcjd8VNJuqW2Azbsupr/AuxU=; b=NGUiw/mL7WRPzT2RlK9PbyCZveUqmgM81hOy+rsUTY5fSOyrgceZh6KAyPQzty08Er GAAyE0otRecqL5W6PFgzjLVh3yne9zHw6kI2SH8c7iWoHgJMYjMEbS+595kxbLBm8qf2 qQERnVQax891G0oWLCpQSHURuboOkuyMPhmkvxoHKNqten4zo5ap/qzmonSf5EAJSo4z mDtWXXE2X35cf75WmH66B9QVWAfS2XEcrFdFNpMX/+GTN7kPhOXo1+dHUg/QsP9/hwJw wO3z9qKaKklY2xI5N5fhygTooZsfTXlDHcv8N5z/VF8EnuPvSdW/cMsUf+VEYBVP1U19 0FAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700322716; x=1700927516; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=SNt2pqVZ1WV5AdCyxo2zcjd8VNJuqW2Azbsupr/AuxU=; b=B6dxk603r1jGG8Pcg7ZdcDnBun7MaeN54X75oO6iBeTWopBAMV0ac7N8XkwEddJdyY HEAv9SbPkjsxPmyTfXs/4K2BfwwegAhcTwpjIptS0kWNgm6iZ2r2w/aO4E4boP/f0VOx MB4hwR3EncXb8NSmjg1PrOfY+hpkKKSNNUUY5voZsuV/5oImPrr72CTR2uqYiMoUJflh tDcGgSbnltxOZcsJIH1AVbdVVdzx4ItVW3jrg6oRsqU9+x9cuVQFnK1xLk6xHPfBtwvN AxZ2CprCmZhf68BRQLwWi1mJ1zbX7YDeeZDVc0kE0/q5H3kFsdMEz8F6ULhgpxAbehqA 7+Hg== X-Gm-Message-State: AOJu0YzYd1C2qNspPB+bM1ZaayHlo5uTOqjH72kUUKRFih4MqRHL4qEA t/4SfbySe6RMomO1DFjAr7isdtkCkM0s7/+g X-Received: by 2002:a25:ca44:0:b0:da0:54f7:69bd with SMTP id a65-20020a25ca44000000b00da054f769bdmr2497887ybg.22.1700322715920; Sat, 18 Nov 2023 07:51:55 -0800 (PST) Received: from localhost ([2601:344:8301:57f0:48a9:bd4c:868d:dc97]) by smtp.gmail.com with ESMTPSA id y36-20020a25ad24000000b00d9a577d8434sm998467ybi.53.2023.11.18.07.51.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Nov 2023 07:51:55 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, Geert Uytterhoeven , Hugh Dickins , Andrew Morton , Yury Norov , linux-m68k@lists.linux-m68k.org Cc: Jan Kara , Mirsad Todorovac , Matthew Wilcox , Rasmus Villemoes , Andy Shevchenko , Maxim Kuvyrkov , Alexey Klimov Subject: [PATCH 32/34] m68k: rework get_mmu_context() Date: Sat, 18 Nov 2023 07:51:03 -0800 Message-Id: <20231118155105.25678-33-yury.norov@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231118155105.25678-1-yury.norov@gmail.com> References: <20231118155105.25678-1-yury.norov@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Sat, 18 Nov 2023 07:55:22 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782917809427573115 X-GMAIL-MSGID: 1782917809427573115 ALSA code opencodes atomic find_and_set_bit_wrap(). Switch it to dedicated function. Signed-off-by: Yury Norov Acked-by: Greg Ungerer --- arch/m68k/include/asm/mmu_context.h | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/arch/m68k/include/asm/mmu_context.h b/arch/m68k/include/asm/mmu_context.h index 141bbdfad960..0419ad87a1c1 100644 --- a/arch/m68k/include/asm/mmu_context.h +++ b/arch/m68k/include/asm/mmu_context.h @@ -35,12 +35,11 @@ static inline void get_mmu_context(struct mm_struct *mm) atomic_inc(&nr_free_contexts); steal_context(); } - ctx = next_mmu_context; - while (test_and_set_bit(ctx, context_map)) { - ctx = find_next_zero_bit(context_map, LAST_CONTEXT+1, ctx); - if (ctx > LAST_CONTEXT) - ctx = 0; - } + + do { + ctx = find_and_set_bit_wrap(context_map, LAST_CONTEXT + 1, next_mmu_context); + } while (ctx > LAST_CONTEXT); + next_mmu_context = (ctx + 1) & LAST_CONTEXT; mm->context = ctx; context_mm[ctx] = mm;