From patchwork Wed Oct 7 07:14:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: SeongJae Park X-Patchwork-Id: 11819855 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 A01286CB for ; Wed, 7 Oct 2020 07:24:00 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 513972083B for ; Wed, 7 Oct 2020 07:24:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="EvdSLF4O" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 513972083B 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 8C64B900002; Wed, 7 Oct 2020 03:23:59 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 876DF6B0062; Wed, 7 Oct 2020 03:23:59 -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 78BD2900002; Wed, 7 Oct 2020 03:23:59 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0108.hostedemail.com [216.40.44.108]) by kanga.kvack.org (Postfix) with ESMTP id 4C0326B005C for ; Wed, 7 Oct 2020 03:23:59 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id D3E6D3630 for ; Wed, 7 Oct 2020 07:23:58 +0000 (UTC) X-FDA: 77344290156.29.ring31_1309977271cd Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin29.hostedemail.com (Postfix) with ESMTP id A9F40180260DF for ; Wed, 7 Oct 2020 07:17:32 +0000 (UTC) X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,prvs=542e595a5=sjpark@amazon.com,,RULES_HIT:30003:30029:30054:30064:30070,0,RBL:52.95.48.154:@amazon.com:.lbl8.mailshell.net-64.10.201.10 62.18.0.100;04y89o8ymha1ty8pn5t3h8f7x133wop886ujju5wcad46atqwc1wymuuh7z79qa.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:24,LUA_SUMMARY:none X-HE-Tag: ring31_1309977271cd X-Filterd-Recvd-Size: 6018 Received: from smtp-fw-6001.amazon.com (smtp-fw-6001.amazon.com [52.95.48.154]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Wed, 7 Oct 2020 07:17:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1602055052; x=1633591052; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=kg6Pid/S3uyECtsR9/ZQNoRBSFk6tXHhc71xqlOp1H8=; b=EvdSLF4OE51VlLKsOURHIYW5dXBE57FJxnoDTDlMD/ucWT9I8VS0j2bW hyo/G9isLM7wsm9U0bAX21/vwpsJ7nKrNWfgejbNk+zU/2dFKMF/OIR4i Zt8kL40CFiMzwHJrCbzeVO5e3abvDGDVbnk1pCbL74+qcng/DElNdfisx U=; X-IronPort-AV: E=Sophos;i="5.77,345,1596499200"; d="scan'208";a="59960978" Received: from iad12-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-1a-e34f1ddc.us-east-1.amazon.com) ([10.43.8.6]) by smtp-border-fw-out-6001.iad6.amazon.com with ESMTP; 07 Oct 2020 07:17:31 +0000 Received: from EX13D31EUA004.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan3.iad.amazon.com [10.40.163.38]) by email-inbound-relay-1a-e34f1ddc.us-east-1.amazon.com (Postfix) with ESMTPS id DEE0BA0576; Wed, 7 Oct 2020 07:17:19 +0000 (UTC) Received: from u3f2cd687b01c55.ant.amazon.com (10.43.162.73) by EX13D31EUA004.ant.amazon.com (10.43.165.161) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 7 Oct 2020 07:17:03 +0000 From: SeongJae Park To: CC: SeongJae Park , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [RFC v9 08/10] tools/damon/record: Support physical memory monitoring Date: Wed, 7 Oct 2020 09:14:07 +0200 Message-ID: <20201007071409.12174-9-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201007071409.12174-1-sjpark@amazon.com> References: <20201007071409.12174-1-sjpark@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.162.73] X-ClientProxiedBy: EX13D31UWA003.ant.amazon.com (10.43.160.130) To EX13D31EUA004.ant.amazon.com (10.43.165.161) 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: