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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 172E0C2BA83 for ; Fri, 14 Feb 2020 15:26:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D8E9924685 for ; Fri, 14 Feb 2020 15:26:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581694000; bh=xrUbGDO2zFhOgr6Jpr2DTebcvshnihlSekd/HRR6A9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=mZGKsJVyMz7gLmCCeSiX5CqFfIKBLgPhTazVV+V0+UlL3ODsmQvUo6+a/tYo72pkK /woOv+E4EFI0PAGMovEyatlmg4KYCxsTNSEpkHCV3v1f9Nt9T5eY14ZTx7+WFkoQIR bhUJ2bD9du07ehByVIiJJhGpWWzdzeGJtksykENk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387562AbgBNP0j (ORCPT ); Fri, 14 Feb 2020 10:26:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:38406 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387536AbgBNP0g (ORCPT ); Fri, 14 Feb 2020 10:26:36 -0500 Received: from lenoir.home (lfbn-ncy-1-985-231.w90-101.abo.wanadoo.fr [90.101.63.231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B8F1D22314; Fri, 14 Feb 2020 15:26:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581693996; bh=xrUbGDO2zFhOgr6Jpr2DTebcvshnihlSekd/HRR6A9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nCv09DOZAtNbNbsKvYBlzQFkW7QR2bzRHxSdcTeaHHrB6+2MJGOQowII+au9nGxIM mo7N4l52E8W0PlzZfX35LFu5C5ru+kYQOr2KdEubEPxY54I0pTaQVw30RHzxF8sZ3G ji8VtylpUyTyn63x8v81/eJt7g2pAbVMNPG2gln4= From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , Paul Burton , Peter Zijlstra , "David S . Miller" , Borislav Petkov , Benjamin Herrenschmidt , Paul Mackerras , Thomas Gleixner , Andy Lutomirski , Ralf Baechle , Ingo Molnar , Will Deacon , Catalin Marinas , Michael Ellerman , Russell King Subject: [PATCH 4/5] arm: Remove TIF_NOHZ Date: Fri, 14 Feb 2020 16:26:14 +0100 Message-Id: <20200214152615.25447-5-frederic@kernel.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200214152615.25447-1-frederic@kernel.org> References: <20200214152615.25447-1-frederic@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Arm entry code calls context tracking from fast path. TIF_NOHZ is unused and can be safely removed. Signed-off-by: Frederic Weisbecker Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Russell King --- arch/arm/Kconfig | 1 - arch/arm/include/asm/thread_info.h | 1 - 2 files changed, 2 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 38b764cae559..97864aabc2a6 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -72,7 +72,6 @@ config ARM select HAVE_ARM_SMCCC if CPU_V7 select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32 select HAVE_CONTEXT_TRACKING - select HAVE_TIF_NOHZ select HAVE_COPY_THREAD_TLS select HAVE_C_RECORDMCOUNT select HAVE_DEBUG_KMEMLEAK if !XIP_KERNEL diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index 0d0d5178e2c3..3609a6980c34 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -141,7 +141,6 @@ extern int vfp_restore_user_hwstate(struct user_vfp *, #define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */ #define TIF_SECCOMP 7 /* seccomp syscall filtering active */ -#define TIF_NOHZ 12 /* in adaptive nohz mode */ #define TIF_USING_IWMMXT 17 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */ #define TIF_RESTORE_SIGMASK 20 -- 2.25.0