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 X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 6713DC433DB for ; Thu, 25 Feb 2021 13:58:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 20EE264F0E for ; Thu, 25 Feb 2021 13:58:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232196AbhBYN6P (ORCPT ); Thu, 25 Feb 2021 08:58:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46736 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231274AbhBYN5r (ORCPT ); Thu, 25 Feb 2021 08:57:47 -0500 Received: from mail-qk1-x72e.google.com (mail-qk1-x72e.google.com [IPv6:2607:f8b0:4864:20::72e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39662C061756; Thu, 25 Feb 2021 05:57:07 -0800 (PST) Received: by mail-qk1-x72e.google.com with SMTP id f17so5653554qkl.5; Thu, 25 Feb 2021 05:57:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=YjQQYAvCYurZK7ldaR7wdMuQlhqNk26sh+booS2Ah34=; b=uRMIB6gDJkTYgjbHVu7BAzdGGm1PFtEAm1zu98MInx0ilMKOd79he4zUJKLVyn5GUB tlZMhqNfr5G/ILE0mA8nnhJq9AmzfJXAmQi4oBS5dxezyZR1l5Xn1oyEoao/cjg5BqrO sP+AsEjwmcT4MM333CaI0Cf5xGOa8PyZX7ueyudp64ptucBQtz7m3rPqFL8aN42MDGmo b7tIRoRtY7HBLDg8S7aXUBME8kjVgCe5DTZeoXRDRcl9MM4D7Bh7GxY2WMcjazIOmGDo nPO9CWDk4Zt5sOSjW3zTaEUgj5g5ihUB387FcuwKTBil76LwLkgVWpX4iK0iu/V+bppa 78EA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=YjQQYAvCYurZK7ldaR7wdMuQlhqNk26sh+booS2Ah34=; b=Jz0QXzZ1tAt5UkcOmZabi3BUy/vEoIy5YS97RyeA8VfZQ2maEVj+/gbZHYhg5wKO5Z FSeDNSPR9QfHnKjMRhdmjKlguSgxjWYzVs1gTwQr7klatUtuatzf5GCyBJYdZ3Zv/MiK kN4/DYDtwG3LOauSxZvWdudG0b2NyBVeU+4vkwlIHdeiA4tbUj0R2eRVEJ9VWULn5HHn 3/uRYJTfVxPXGKRWuBpYfEyh9FMdWR7GtJvM77efw3v+1U+o2Vq+Cne5PaoT6pmdHcMk rPAXc24qIrBjx0pTp285mxkuF23yG1rFlsg1M/YYPu01NBH5/FhSIjbSdi6WnXkbOczw 1otw== X-Gm-Message-State: AOAM532ZTtTBUyd4rVCHtRhdR878tfHj7kh+mc0ZpR6N1QxFeQ79aAn6 H+XxzDbeQ/t1LicacA94MfY= X-Google-Smtp-Source: ABdhPJx+PKOZos9XXN2E6Yo01qJv1TAuCbOtRjCLWy1ChLGZFh7LIPlXALSkc5a6ENsIBlQSRnoD1Q== X-Received: by 2002:a05:620a:166e:: with SMTP id d14mr2846844qko.82.1614261426421; Thu, 25 Feb 2021 05:57:06 -0800 (PST) Received: from localhost (d27-96-190-162.evv.wideopenwest.com. [96.27.162.190]) by smtp.gmail.com with ESMTPSA id z1sm3522908qtu.83.2021.02.25.05.57.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Feb 2021 05:57:06 -0800 (PST) From: Yury Norov To: Will Deacon , Catalin Marinas , Thomas Bogendoerfer , Alexander Lobakin , Alexey Klimov , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mips@vger.kernel.org Cc: Yury Norov Subject: [PATCH 2/2] MIPS: enable GENERIC_FIND_FIRST_BIT Date: Thu, 25 Feb 2021 05:57:00 -0800 Message-Id: <20210225135700.1381396-3-yury.norov@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210225135700.1381396-1-yury.norov@gmail.com> References: <20210225135700.1381396-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Lobakin MIPS doesn't have architecture-optimized bitsearching functions, like find_{first,next}_bit() etc. It's absolutely harmless to enable GENERIC_FIND_FIRST_BIT as this functionality is not new at all and well-tested. It provides more optimized code and saves some .text memory (32 R2): add/remove: 4/1 grow/shrink: 1/53 up/down: 216/-372 (-156) Users of for_each_set_bit() like hotpath gic_handle_shared_int() will also benefit from this. Suggested-by: Yury Norov Signed-off-by: Alexander Lobakin Signed-off-by: Yury Norov --- arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index d89efba3d8a4..164bdd715d4b 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -26,6 +26,7 @@ config MIPS select GENERIC_ATOMIC64 if !64BIT select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE + select GENERIC_FIND_FIRST_BIT select GENERIC_GETTIMEOFDAY select GENERIC_IOMAP select GENERIC_IRQ_PROBE -- 2.25.1