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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 84DC7C433DF for ; Wed, 12 Aug 2020 01:38:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 60D0A2054F for ; Wed, 12 Aug 2020 01:38:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597196282; bh=NZ8MgY+I9N4pW3668y8HsY2GRkps2RVyZLbxMMlaA1M=; h=Date:From:To:Subject:In-Reply-To:Reply-To:List-ID:From; b=X1gWnCMuKRcOtPclxwcGItEU6gAh7xLi0uQA9ESztbT539eJPoXRvkV39HCbR+ExV 8f/5ihshlwOH1CY0O0UAvsgjlIDr2xisbn72w4xT9JXgiIoOTnmpz97nJkJRi8FDq7 NnnrXvdgdOtjvz9VDc1Q/55ZCFQeeLt7pHsmQ7Og= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726483AbgHLBiC (ORCPT ); Tue, 11 Aug 2020 21:38:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:40144 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726235AbgHLBiB (ORCPT ); Tue, 11 Aug 2020 21:38:01 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 621C72076C; Wed, 12 Aug 2020 01:38:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597196281; bh=NZ8MgY+I9N4pW3668y8HsY2GRkps2RVyZLbxMMlaA1M=; h=Date:From:To:Subject:In-Reply-To:From; b=JiAmGWEDvYNUOL/BApVZV0pnvnCuU4d2+ZCUbWvohUGWMWFuR//mCH4QOG6ceSiCx 7TwKzpjLBCqBTQVMqBJjmOCRMMUv2Zo0TY7/u1WQwam0W8AiUBJyC+731gawemAbBg TCDim2ttB1GqsYKAKUKxNU1WmGg5z+10eJmAh6qM= Date: Tue, 11 Aug 2020 18:38:00 -0700 From: Andrew Morton To: akpm@linux-foundation.org, guoren@kernel.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, peterx@redhat.com, torvalds@linux-foundation.org Subject: [patch 146/165] mm/csky: use general page fault accounting Message-ID: <20200812013800.7Sw_gjGmg%akpm@linux-foundation.org> In-Reply-To: <20200811182949.e12ae9a472e3b5e27e16ad6c@linux-foundation.org> User-Agent: s-nail v14.8.16 Sender: mm-commits-owner@vger.kernel.org Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Peter Xu Subject: mm/csky: use general page fault accounting Use the general page fault accounting by passing regs into handle_mm_fault(). It naturally solve the issue of multiple page fault accounting when page fault retry happened. Link: http://lkml.kernel.org/r/20200707225021.200906-7-peterx@redhat.com Signed-off-by: Peter Xu Acked-by: Guo Ren Signed-off-by: Andrew Morton --- arch/csky/mm/fault.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) --- a/arch/csky/mm/fault.c~mm-csky-use-general-page-fault-accounting +++ a/arch/csky/mm/fault.c @@ -151,7 +151,7 @@ good_area: * the fault. */ fault = handle_mm_fault(vma, address, write ? FAULT_FLAG_WRITE : 0, - NULL); + regs); if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) goto out_of_memory; @@ -161,16 +161,6 @@ good_area: goto bad_area; BUG(); } - if (fault & VM_FAULT_MAJOR) { - tsk->maj_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, - address); - } else { - tsk->min_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, - address); - } - mmap_read_unlock(mm); return; _