From patchwork Tue Jan 12 16:12:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liam R. Howlett" X-Patchwork-Id: 12013903 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 D3558C433DB for ; Tue, 12 Jan 2021 16:15:45 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6680F2222F for ; Tue, 12 Jan 2021 16:15:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6680F2222F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=Oracle.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A3F818D00C9; Tue, 12 Jan 2021 11:14:10 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 99F338D00C7; Tue, 12 Jan 2021 11:14:10 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 88D8F8D00C9; Tue, 12 Jan 2021 11:14:10 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0238.hostedemail.com [216.40.44.238]) by kanga.kvack.org (Postfix) with ESMTP id 441F88D00C7 for ; Tue, 12 Jan 2021 11:14:10 -0500 (EST) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id E46171EE6 for ; Tue, 12 Jan 2021 16:14:09 +0000 (UTC) X-FDA: 77697619818.27.start29_52147f727516 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin27.hostedemail.com (Postfix) with ESMTP id 5AD3C3D669 for ; Tue, 12 Jan 2021 16:14:09 +0000 (UTC) X-HE-Tag: start29_52147f727516 X-Filterd-Recvd-Size: 5270 Received: from userp2130.oracle.com (userp2130.oracle.com [156.151.31.86]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Tue, 12 Jan 2021 16:14:08 +0000 (UTC) Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 10CG97Jp181150; Tue, 12 Jan 2021 16:13:56 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=corp-2020-01-29; bh=rwx+ISwRfsUXG+859qoeHVRR4OT2xAHrhQ1qrn5w4y8=; b=iTmFQO3xNBl5RouLZWpm5Ew0Y0JmF2qvUoDtTxH0m9kH1My3Eyp5SopCriFrlQ/EMg7J G+Zy6WBH4O3ev7I2WWjM90ewVQTI4HbPvtaDx+c+Glv5U+AtdDTHYJJvz5Nosbxq9z+w tBpL/AFLsDbZLY+ejWL45MOSlMq8l8CwL+3ohBdGsWSbRfHIllGOYZKvXTLN8+JK97kF 90k+wIpD4bF3slCnQCbf7n+o8htavUL4G9o2XBHJ8cPHavqsOdL6kskk5lh4SCiwviWp AiBVVlmdV+vuBDjOYGhoHS//dTUDC37Eo7Ourzq4VgGAyzN1wjV7xR6NJsPRNkTFKXwC iA== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2130.oracle.com with ESMTP id 360kvjy1ns-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 12 Jan 2021 16:13:55 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 10CGAaXU100373; Tue, 12 Jan 2021 16:13:55 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3030.oracle.com with ESMTP id 360keh7jv4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 12 Jan 2021 16:13:55 +0000 Received: from abhmp0012.oracle.com (abhmp0012.oracle.com [141.146.116.18]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 10CGDsNk004663; Tue, 12 Jan 2021 16:13:54 GMT Received: from revolver.jebus.ca (/23.233.25.87) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 12 Jan 2021 08:13:54 -0800 From: "Liam R. Howlett" To: maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrew Morton , Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Jerome Glisse , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra Subject: [PATCH v2 38/70] drivers/oprofile: Lookup address in tree instead of linked list. Date: Tue, 12 Jan 2021 11:12:08 -0500 Message-Id: <20210112161240.2024684-39-Liam.Howlett@Oracle.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210112161240.2024684-1-Liam.Howlett@Oracle.com> References: <20210112161240.2024684-1-Liam.Howlett@Oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9862 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 phishscore=0 spamscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101120092 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9862 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 phishscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 impostorscore=0 spamscore=0 mlxscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101120092 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Use the vma interface to find the vma if one exists instead of the linked list Signed-off-by: Liam R. Howlett --- drivers/oprofile/buffer_sync.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c index cc917865f13ab..c63703b3bcebe 100644 --- a/drivers/oprofile/buffer_sync.c +++ b/drivers/oprofile/buffer_sync.c @@ -253,15 +253,12 @@ static unsigned long get_exec_dcookie(struct mm_struct *mm) static unsigned long lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset) { - unsigned long cookie = NO_COOKIE; + unsigned long cookie = INVALID_COOKIE; struct vm_area_struct *vma; mmap_read_lock(mm); - for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) { - - if (addr < vma->vm_start || addr >= vma->vm_end) - continue; - + vma = find_vma_intersection(mm, addr, addr + 1); + if (vma) { if (vma->vm_file) { cookie = fast_get_dcookie(&vma->vm_file->f_path); *offset = (vma->vm_pgoff << PAGE_SHIFT) + addr - @@ -269,13 +266,10 @@ lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset) } else { /* must be an anonymous map */ *offset = addr; + cookie = NO_COOKIE; } - - break; } - if (!vma) - cookie = INVALID_COOKIE; mmap_read_unlock(mm); return cookie;