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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 3F3F8C433E0 for ; Thu, 4 Feb 2021 15:38:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B7F664F47 for ; Thu, 4 Feb 2021 15:38:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237494AbhBDPig (ORCPT ); Thu, 4 Feb 2021 10:38:36 -0500 Received: from smtp-fw-9103.amazon.com ([207.171.188.200]:26502 "EHLO smtp-fw-9103.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237318AbhBDPfP (ORCPT ); Thu, 4 Feb 2021 10:35:15 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1612452914; x=1643988914; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=CvzI94r9LiC7RH+dtcaRZqda/Y720VadPnKc/47pvNM=; b=AwOdrOsFbDspLgCjiFl1ydK9q0HC0iiXNwRHVIJgQlo0YD0na0ms5WyZ A90OkPawcLG1IJ4IAYVhSAwlPiVC5ieJMeTEVjVuOxuwbmZFVPxdOlfo6 drzM6bpT3EtiggcU0h3zZH76fYeOsf7lV1R9/VPWIbUi3nLngOO9WO/1A Y=; X-IronPort-AV: E=Sophos;i="5.79,401,1602547200"; d="scan'208";a="915636034" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1d-474bcd9f.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9103.sea19.amazon.com with ESMTP; 04 Feb 2021 15:34:23 +0000 Received: from EX13D31EUA001.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan2.iad.amazon.com [10.40.163.34]) by email-inbound-relay-1d-474bcd9f.us-east-1.amazon.com (Postfix) with ESMTPS id 51FF6A1D33; Thu, 4 Feb 2021 15:34:12 +0000 (UTC) Received: from u3f2cd687b01c55.ant.amazon.com (10.43.161.146) by EX13D31EUA001.ant.amazon.com (10.43.165.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 4 Feb 2021 15:33:55 +0000 From: SeongJae Park To: CC: SeongJae Park , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v24 06/14] mm/damon: Add a tracepoint Date: Thu, 4 Feb 2021 16:31:42 +0100 Message-ID: <20210204153150.15948-7-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210204153150.15948-1-sjpark@amazon.com> References: <20210204153150.15948-1-sjpark@amazon.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.43.161.146] X-ClientProxiedBy: EX13D18UWA001.ant.amazon.com (10.43.160.11) To EX13D31EUA001.ant.amazon.com (10.43.165.15) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 Reviewed-by: Steven Rostedt (VMware) --- include/trace/events/damon.h | 43 ++++++++++++++++++++++++++++++++++++ mm/damon/core.c | 7 +++++- 2 files changed, 49 insertions(+), 1 deletion(-) 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..2f422f4f1fb9 --- /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_target *t, struct damon_region *r, + unsigned int nr_regions), + + TP_ARGS(t, r, nr_regions), + + TP_STRUCT__entry( + __field(unsigned long, target_id) + __field(unsigned int, nr_regions) + __field(unsigned long, start) + __field(unsigned long, end) + __field(unsigned int, nr_accesses) + ), + + TP_fast_assign( + __entry->target_id = t->id; + __entry->nr_regions = nr_regions; + __entry->start = r->ar.start; + __entry->end = r->ar.end; + __entry->nr_accesses = r->nr_accesses; + ), + + TP_printk("target_id=%lu nr_regions=%u %lu-%lu: %u", + __entry->target_id, __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/core.c b/mm/damon/core.c index b36b6bdd94e2..912112662d0c 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -13,6 +13,9 @@ #include #include +#define CREATE_TRACE_POINTS +#include + /* Get a random number in [l, r) */ #define damon_rand(l, r) (l + prandom_u32_max(r - l)) @@ -388,8 +391,10 @@ static void kdamond_reset_aggregated(struct damon_ctx *c) damon_for_each_target(t, c) { struct damon_region *r; - damon_for_each_region(r, t) + damon_for_each_region(r, t) { + trace_damon_aggregated(t, r, damon_nr_regions(t)); r->nr_accesses = 0; + } } } -- 2.17.1