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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 ECE51C433E1 for ; Mon, 13 Jul 2020 08:45:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C9C922065D for ; Mon, 13 Jul 2020 08:45:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="P+YFz5ZJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728883AbgGMIpI (ORCPT ); Mon, 13 Jul 2020 04:45:08 -0400 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:38084 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727834AbgGMIpI (ORCPT ); Mon, 13 Jul 2020 04:45:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1594629908; x=1626165908; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=iorj5Y8DmflMMpGT/XFAXIVJdzZx6l8ogkdpERlrhpw=; b=P+YFz5ZJVgDN1irNh3QWNXFaIBEvtgLmjakvdAV8cmS1btcnOg09oZGM br0Ei9ST+Cm3yBUHQf90o4JCUQ6KIaSIcU58pS7T9BqE0XoNtpCRj6WSF JAdaZjIxo7hYkx8Ssnf5x+mVctfYi/c2CpxkM+tfbeHVWZJa9tAqqflz/ k=; IronPort-SDR: eHJAkfLsjVuuQpEvJ2u4OVaqKmLfMCHLMvwicBE0gPMJsP+IO8gc38w+zTBNHiOCk3y4B9R7sS PKzyLd4YScGA== X-IronPort-AV: E=Sophos;i="5.75,346,1589241600"; d="scan'208";a="59283459" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-2a-d0be17ee.us-west-2.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 13 Jul 2020 08:45:07 +0000 Received: from EX13MTAUEA002.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan3.pdx.amazon.com [10.170.41.166]) by email-inbound-relay-2a-d0be17ee.us-west-2.amazon.com (Postfix) with ESMTPS id 8830AA23CF; Mon, 13 Jul 2020 08:45:04 +0000 (UTC) Received: from EX13D31EUA004.ant.amazon.com (10.43.165.161) by EX13MTAUEA002.ant.amazon.com (10.43.61.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 13 Jul 2020 08:45:03 +0000 Received: from u886c93fd17d25d.ant.amazon.com (10.43.161.146) by EX13D31EUA004.ant.amazon.com (10.43.165.161) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 13 Jul 2020 08:44:47 +0000 From: SeongJae Park To: CC: SeongJae Park , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v18 08/14] mm/damon: Add a tracepoint Date: Mon, 13 Jul 2020 10:41:38 +0200 Message-ID: <20200713084144.4430-9-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200713084144.4430-1-sjpark@amazon.com> References: <20200713084144.4430-1-sjpark@amazon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.43.161.146] X-ClientProxiedBy: EX13P01UWA002.ant.amazon.com (10.43.160.46) To EX13D31EUA004.ant.amazon.com (10.43.165.161) Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org From: SeongJae Park This commit adds a tracepoint for DAMON. It traces the monitoring results of each region for each aggregation interval. Using this, DAMON can easily integrated with tracepoints supporting tools such as perf. Signed-off-by: SeongJae Park Reviewed-by: Leonard Foerster --- include/trace/events/damon.h | 43 ++++++++++++++++++++++++++++++++++++ mm/damon.c | 4 ++++ 2 files changed, 47 insertions(+) create mode 100644 include/trace/events/damon.h diff --git a/include/trace/events/damon.h b/include/trace/events/damon.h new file mode 100644 index 000000000000..40b249a28b30 --- /dev/null +++ b/include/trace/events/damon.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM damon + +#if !defined(_TRACE_DAMON_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DAMON_H + +#include +#include +#include + +TRACE_EVENT(damon_aggregated, + + TP_PROTO(struct damon_task *t, struct damon_region *r, + unsigned int nr_regions), + + TP_ARGS(t, r, nr_regions), + + TP_STRUCT__entry( + __field(int, pid) + __field(unsigned int, nr_regions) + __field(unsigned long, start) + __field(unsigned long, end) + __field(unsigned int, nr_accesses) + ), + + TP_fast_assign( + __entry->pid = t->pid; + __entry->nr_regions = nr_regions; + __entry->start = r->ar.start; + __entry->end = r->ar.end; + __entry->nr_accesses = r->nr_accesses; + ), + + TP_printk("pid=%d nr_regions=%u %lu-%lu: %u", __entry->pid, + __entry->nr_regions, __entry->start, + __entry->end, __entry->nr_accesses) +); + +#endif /* _TRACE_DAMON_H */ + +/* This part must be outside protection */ +#include diff --git a/mm/damon.c b/mm/damon.c index 55ecfab64220..00df1a4c3d5c 100644 --- a/mm/damon.c +++ b/mm/damon.c @@ -19,6 +19,8 @@ #define pr_fmt(fmt) "damon: " fmt +#define CREATE_TRACE_POINTS + #include #include #include @@ -29,6 +31,7 @@ #include #include #include +#include /* Minimal region size. Every damon_region is aligned by this. */ #define MIN_REGION PAGE_SIZE @@ -791,6 +794,7 @@ static void kdamond_reset_aggregated(struct damon_ctx *c) damon_write_rbuf(c, &r->ar.end, sizeof(r->ar.end)); damon_write_rbuf(c, &r->nr_accesses, sizeof(r->nr_accesses)); + trace_damon_aggregated(t, r, nr); r->nr_accesses = 0; } } -- 2.17.1