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=-8.9 required=3.0 tests=DATE_IN_PAST_06_12, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 84DD2C0650E for ; Wed, 3 Jul 2019 07:14:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6891E2187F for ; Wed, 3 Jul 2019 07:14:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727353AbfGCHO1 (ORCPT ); Wed, 3 Jul 2019 03:14:27 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:33050 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727281AbfGCHON (ORCPT ); Wed, 3 Jul 2019 03:14:13 -0400 Received: by mail-pg1-f195.google.com with SMTP id m4so738195pgk.0 for ; Wed, 03 Jul 2019 00:14:12 -0700 (PDT) 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; bh=VhTZ18hX0yEenw77Q3E7kjklW3RIcvPLHLYFnzx8tTo=; b=FntETGZypFmNQf29s+82sGEL/0SLzDgQmDa+DR4SOkXAjaHG+p32B/p6SORUaFSoDq F5o426SEdwguoO1QtmSgLl6LIf/Q0s84UTz7xZFtN/imRbh5EaZ2JItm/iWiCK2N7j30 aoY78ZBJrboSMgpI5bDV02gTmJmzL1taqTRd3C4zjAIaU+xZF1BVkMnXX6sPdc0Qd1Dr 518oGydyELmcsT7EGcDd8ktOp2d9VC+O8dNIwrSpegDkZJycsHoI4Om5Dqsfqt+PJnTP SVGMSh5xkCY/3giU5YzwJuO2kp606WbcesbAIztofJdQCxHI0EYJsrv7TC66HlzZmsma zE0g== X-Gm-Message-State: APjAAAVZzLoUDZLchf0RrBMdg5gL2w5J4w4JnT14WTnlry2/lwQWNDFo V/KIhrOdbg4/SWeXDR9cXRE= X-Google-Smtp-Source: APXvYqzC4CGTMLNck3tIx7EzXNyO1g2d4Mr6ue9VWwe/l1J2IROz1M62rJsJFAr4vhW9atojF5j23Q== X-Received: by 2002:a65:4786:: with SMTP id e6mr26980658pgs.448.1562138052234; Wed, 03 Jul 2019 00:14:12 -0700 (PDT) Received: from sc2-haas01-esx0118.eng.vmware.com ([66.170.99.1]) by smtp.gmail.com with ESMTPSA id j21sm1256593pfh.86.2019.07.03.00.14.11 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 03 Jul 2019 00:14:11 -0700 (PDT) From: Nadav Amit To: Andy Lutomirski , Dave Hansen Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Nadav Amit Subject: [PATCH v2 7/9] cpumask: Mark functions as pure Date: Tue, 2 Jul 2019 16:51:49 -0700 Message-Id: <20190702235151.4377-8-namit@vmware.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190702235151.4377-1-namit@vmware.com> References: <20190702235151.4377-1-namit@vmware.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org cpumask_next_and() and cpumask_any_but() are pure, and marking them as such seems to generate different and presumably better code for native_flush_tlb_multi(). Signed-off-by: Nadav Amit --- include/linux/cpumask.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 693124900f0a..8decc46ca0ce 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -211,7 +211,7 @@ static inline unsigned int cpumask_last(const struct cpumask *srcp) return find_last_bit(cpumask_bits(srcp), nr_cpumask_bits); } -unsigned int cpumask_next(int n, const struct cpumask *srcp); +unsigned int __pure cpumask_next(int n, const struct cpumask *srcp); /** * cpumask_next_zero - get the next unset cpu in a cpumask @@ -228,8 +228,8 @@ static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp) return find_next_zero_bit(cpumask_bits(srcp), nr_cpumask_bits, n+1); } -int cpumask_next_and(int n, const struct cpumask *, const struct cpumask *); -int cpumask_any_but(const struct cpumask *mask, unsigned int cpu); +int __pure cpumask_next_and(int n, const struct cpumask *, const struct cpumask *); +int __pure cpumask_any_but(const struct cpumask *mask, unsigned int cpu); unsigned int cpumask_local_spread(unsigned int i, int node); /** -- 2.17.1