From patchwork Mon Aug 31 10:47:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: SeongJae Park X-Patchwork-Id: 11746131 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 138A51575 for ; Mon, 31 Aug 2020 10:50:29 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D51F12068F for ; Mon, 31 Aug 2020 10:50:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="JeJyRUy/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D51F12068F Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amazon.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 19AF66B0008; Mon, 31 Aug 2020 06:50:28 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 172276B000A; Mon, 31 Aug 2020 06:50:28 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0604F6B000C; Mon, 31 Aug 2020 06:50:28 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0122.hostedemail.com [216.40.44.122]) by kanga.kvack.org (Postfix) with ESMTP id E402B6B0008 for ; Mon, 31 Aug 2020 06:50:27 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 92BF9181AEF0B for ; Mon, 31 Aug 2020 10:50:27 +0000 (UTC) X-FDA: 77210544894.21.wool22_5310d4e2708f Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id 55F33180442C3 for ; Mon, 31 Aug 2020 10:50:27 +0000 (UTC) X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,prvs=5052c6ed3=sjpark@amazon.com,,RULES_HIT:30003:30029:30054:30064:30070,0,RBL:207.171.190.10:@amazon.com:.lbl8.mailshell.net-62.18.0.100 66.10.201.10;04yrkqfukhwbzta4z8g1wmnwohjg8yp886ujju5wcad46atqwc1wymuuh7z79qa.yyuejhx8oq8j7cx916mfc48fsjxb433f4kh7sf36z3hgxjbho6udbgs7jqzwik3.4-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:25,LUA_SUMMARY:none X-HE-Tag: wool22_5310d4e2708f X-Filterd-Recvd-Size: 6014 Received: from smtp-fw-33001.amazon.com (smtp-fw-33001.amazon.com [207.171.190.10]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Mon, 31 Aug 2020 10:50:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1598871026; x=1630407026; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=kg6Pid/S3uyECtsR9/ZQNoRBSFk6tXHhc71xqlOp1H8=; b=JeJyRUy/pvC6OqcelFYbIutWq32kst6p67ZYSct1AMSqrbrTBopRcgH2 ODI/WBs/kQhMeEBiBLRhZbWO6IIvbxYZaO2ISA2F+n06LpOnHREp8Cd9n UyQgcwuiWJzXqEM+WQuKGB9u35GaX/gsEBrjTv78SvL6a6XgbNNg9K7jh 8=; X-IronPort-AV: E=Sophos;i="5.76,375,1592870400"; d="scan'208";a="71144314" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-2b-a7fdc47a.us-west-2.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP; 31 Aug 2020 10:50:25 +0000 Received: from EX13D31EUB001.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2b-a7fdc47a.us-west-2.amazon.com (Postfix) with ESMTPS id 33366C06C5; Mon, 31 Aug 2020 10:50:23 +0000 (UTC) Received: from u3f2cd687b01c55.ant.amazon.com (10.43.160.100) by EX13D31EUB001.ant.amazon.com (10.43.166.210) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 31 Aug 2020 10:50:05 +0000 From: SeongJae Park To: CC: SeongJae Park , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [RFC v8 08/10] tools/damon/record: Support physical memory monitoring Date: Mon, 31 Aug 2020 12:47:28 +0200 Message-ID: <20200831104730.28970-9-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200831104730.28970-1-sjpark@amazon.com> References: <20200831104730.28970-1-sjpark@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.160.100] X-ClientProxiedBy: EX13D49UWB002.ant.amazon.com (10.43.163.68) To EX13D31EUB001.ant.amazon.com (10.43.166.210) X-Rspamd-Queue-Id: 55F33180442C3 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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: From: SeongJae Park This commit allows users to record the data accesses on physical memory address space by passing 'paddr' as target to 'damo-record'. If the init regions are given, the regions will be monitored. Else, it will monitor biggest conitguous 'System RAM' region in '/proc/iomem' and monitor the region. Signed-off-by: SeongJae Park --- tools/damon/_damon.py | 2 ++ tools/damon/record.py | 29 ++++++++++++++++++++++++++++- 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/tools/damon/_damon.py b/tools/damon/_damon.py index a22ec3777c16..6ff278117e84 100644 --- a/tools/damon/_damon.py +++ b/tools/damon/_damon.py @@ -27,6 +27,8 @@ def set_target(tid, init_regions=[]): if not os.path.exists(debugfs_init_regions): return 0 + if tid == 'paddr': + tid = 42 string = ' '.join(['%s %d %d' % (tid, r[0], r[1]) for r in init_regions]) return subprocess.call('echo "%s" > %s' % (string, debugfs_init_regions), shell=True, executable='/bin/bash') diff --git a/tools/damon/record.py b/tools/damon/record.py index 11fd54001472..6fd0b59c73e0 100644 --- a/tools/damon/record.py +++ b/tools/damon/record.py @@ -101,6 +101,29 @@ def set_argparser(parser): parser.add_argument('-o', '--out', metavar='', type=str, default='damon.data', help='output file path') +def default_paddr_region(): + "Largest System RAM region becomes the default" + ret = [] + with open('/proc/iomem', 'r') as f: + # example of the line: '100000000-42b201fff : System RAM' + for line in f: + fields = line.split(':') + if len(fields) != 2: + continue + name = fields[1].strip() + if name != 'System RAM': + continue + addrs = fields[0].split('-') + if len(addrs) != 2: + continue + start = int(addrs[0], 16) + end = int(addrs[1], 16) + + sz_region = end - start + if not ret or sz_region > (ret[1] - ret[0]): + ret = [start, end] + return ret + def main(args=None): global orig_attrs if not args: @@ -122,7 +145,11 @@ def main(args=None): target = args.target target_fields = target.split() - if not subprocess.call('which %s &> /dev/null' % target_fields[0], + if target == 'paddr': # physical memory address space + if not init_regions: + init_regions = [default_paddr_region()] + do_record(target, False, init_regions, new_attrs, orig_attrs, pidfd) + elif not subprocess.call('which %s &> /dev/null' % target_fields[0], shell=True, executable='/bin/bash'): do_record(target, True, init_regions, new_attrs, orig_attrs, pidfd) else: