From mboxrd@z Thu Jan 1 00:00:00 1970 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 C4A4CC4167B for ; Sun, 3 Dec 2023 19:35:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234029AbjLCTfR (ORCPT ); Sun, 3 Dec 2023 14:35:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234095AbjLCTed (ORCPT ); Sun, 3 Dec 2023 14:34:33 -0500 Received: from mail-yw1-x1136.google.com (mail-yw1-x1136.google.com [IPv6:2607:f8b0:4864:20::1136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B91D10D0 for ; Sun, 3 Dec 2023 11:34:08 -0800 (PST) Received: by mail-yw1-x1136.google.com with SMTP id 00721157ae682-5cfc3a48ab2so39492967b3.0 for ; Sun, 03 Dec 2023 11:34:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701632047; x=1702236847; 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=eEAW6nGOpgim0ACBxEZBy/BOAQq7BVlPEZ5Wnk5EbpM=; b=XRC8nmw4aWS21qdL/HpPYHRLloSUN6FVCe40JgWmo0j/cG8RyRTVuZCSGllmeCRFEE czLitV/XKrw8nagMe36/wTlO0vpJIWEcNakT3uQBrQpQZPJB2P8I4ywRKStWM2WLSzhH CJUBIU9mFE8u8Hi+eRykCJb71qqMQ3iCkNCZWbp0VTCrR45mSSP2WVEKQo6Q9LnhK3hy /rPKActhfQeQxGYfXqgmp/5Re6hkt5H34R0BCRgbaUgLpxEfDiMiTN9LKOJ2ekzkR3q4 pZyzmBScJTzuBzaEL9SZkNSZ70l2UIMbOXXRBBy2s8L5Eyj9jc10WH6Xl06yypaVmK7L oo4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701632047; x=1702236847; 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=eEAW6nGOpgim0ACBxEZBy/BOAQq7BVlPEZ5Wnk5EbpM=; b=UH9rcOj9+PMigV/uPE/vrLOT5fQJkf9FugsvkI+UYxNlBQbzu1YYfpq7FzPY1ikyU4 x6ccFT4I3Mr0u9EBzBLIcGEPunKvc3S/7xNnEbi90ZAXHRlZ/y4l5L1ihCksQpFQGbdd DpiRSh9K+cpF+TFOsvmJUw1w4nwOxJxnEXCNrqFMRYfHhRjVBqH+i3Qe3N3lme3fQAYW wjWCcqJAQT/JJ4rH2LqMIWtyLOqZMAULaqFgjvcYRMTJDJYo3hEkKp7JoCs8jXs0lqW7 0orHfMK3ChxoQd3p8Bl2qDJxWQ2ZfaItSst+lvrGFIuO0pg44Zuu3L885+PaiQse3L9+ ya2Q== X-Gm-Message-State: AOJu0YzJ3UWy6uHaPC+caML39p0X8W1xR4WobPTmXmkWRhnfOOe3lNCV HT8TSX9q0LFYwHvgO4UKpCFtiDzltN2Zpw== X-Google-Smtp-Source: AGHT+IHufbVLLqLGwm6nH7ckWvYr9uGUqV0U2BDaMdlKYlwniqIdKwaazuL68uDooDDXCfZAK6cVoA== X-Received: by 2002:a81:af62:0:b0:5d3:507f:98da with SMTP id x34-20020a81af62000000b005d3507f98damr2016941ywj.11.1701632046878; Sun, 03 Dec 2023 11:34:06 -0800 (PST) Received: from localhost ([2601:344:8301:57f0:cb98:c3e:57c:8191]) by smtp.gmail.com with ESMTPSA id q188-20020a8199c5000000b00583f8f41cb8sm2732232ywg.63.2023.12.03.11.34.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Dec 2023 11:34:06 -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 , Bart Van Assche , Sergey Shtylyov , Greg Ungerer Subject: [PATCH v2 33/35] m68k: rework get_mmu_context() Date: Sun, 3 Dec 2023 11:33:05 -0800 Message-Id: <20231203193307.542794-32-yury.norov@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231203193307.542794-1-yury.norov@gmail.com> References: <20231203192422.539300-1-yury.norov@gmail.com> <20231203193307.542794-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org get_mmu_context() opencodes atomic find_and_set_bit_wrap(). Switch it to dedicated function. CC: Geert Uytterhoeven 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; -- 2.40.1