From patchwork Mon Feb 24 12:30:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: SeongJae Park X-Patchwork-Id: 11400379 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 1EFB314E3 for ; Mon, 24 Feb 2020 12:35:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D58EA2084E for ; Mon, 24 Feb 2020 12:35:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="GalmQImO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D58EA2084E 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 2B5C26B0008; Mon, 24 Feb 2020 07:35:06 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 264406B000A; Mon, 24 Feb 2020 07:35:06 -0500 (EST) 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 153736B000C; Mon, 24 Feb 2020 07:35:06 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0090.hostedemail.com [216.40.44.90]) by kanga.kvack.org (Postfix) with ESMTP id EF4306B0008 for ; Mon, 24 Feb 2020 07:35:05 -0500 (EST) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id C59463489 for ; Mon, 24 Feb 2020 12:35:05 +0000 (UTC) X-FDA: 76524965370.24.dog55_669ee8b50d526 X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,prvs=316760060=sjpark@amazon.com,,RULES_HIT:30054:30064,0,RBL:207.171.184.25:@amazon.com:.lbl8.mailshell.net-62.18.0.100 66.10.201.10,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: dog55_669ee8b50d526 X-Filterd-Recvd-Size: 5328 Received: from smtp-fw-9101.amazon.com (smtp-fw-9101.amazon.com [207.171.184.25]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Mon, 24 Feb 2020 12:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1582547706; x=1614083706; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=my+c3KBsPgzynSwlWdSBQo7WgTwmz0yazVFl0c29+sE=; b=GalmQImOc+sovS6bQ+qb1SpkGt0fK3LFUJ5GQfzmxOPNRWBNvlULOf/q VXrvSLouPd04z5k9NqBRy9ExYOdKPPDekbFerZ+bHocNByBMipkRzDYI7 CMRpdL+8cJj13vaUI3q8rk4QvwOBzAmMHhv9FSaBv87/0BkK2cug6FG3o c=; IronPort-SDR: /1KkFdh7YSrm5z8t8RQvhPp8sjOX1rWZNybG4gMDYw9mHK8pYNv1pB16X1rWhw+RvOvE8bj2X5 r/x0+GFBPZpw== X-IronPort-AV: E=Sophos;i="5.70,480,1574121600"; d="scan'208";a="18696669" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-2a-119b4f96.us-west-2.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9101.sea19.amazon.com with ESMTP; 24 Feb 2020 12:35:04 +0000 Received: from EX13MTAUEA002.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2a-119b4f96.us-west-2.amazon.com (Postfix) with ESMTPS id 00BBF1A00DE; Mon, 24 Feb 2020 12:35:01 +0000 (UTC) Received: from EX13D31EUA001.ant.amazon.com (10.43.165.15) by EX13MTAUEA002.ant.amazon.com (10.43.61.77) with Microsoft SMTP Server (TLS) id 15.0.1236.3; Mon, 24 Feb 2020 12:35:01 +0000 Received: from u886c93fd17d25d.ant.amazon.com (10.43.162.53) by EX13D31EUA001.ant.amazon.com (10.43.165.15) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 24 Feb 2020 12:34:49 +0000 From: SeongJae Park To: CC: SeongJae Park , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v6 09/14] mm/damon: Add a tracepoint for result writing Date: Mon, 24 Feb 2020 13:30:42 +0100 Message-ID: <20200224123047.32506-10-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200224123047.32506-1-sjpark@amazon.com> References: <20200224123047.32506-1-sjpark@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.162.53] X-ClientProxiedBy: EX13D19UWC003.ant.amazon.com (10.43.162.184) To EX13D31EUA001.ant.amazon.com (10.43.165.15) 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 adds a tracepoint for DAMON's result buffer writing. It is called for each writing of the DAMON results and print the result data. Therefore, it would be used to easily integrated with other tracepoint supporting tracers such as perf. Signed-off-by: SeongJae Park --- include/trace/events/damon.h | 32 ++++++++++++++++++++++++++++++++ mm/damon.c | 4 ++++ 2 files changed, 36 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..fb33993620ce --- /dev/null +++ b/include/trace/events/damon.h @@ -0,0 +1,32 @@ +/* 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 + +TRACE_EVENT(damon_write_rbuf, + + TP_PROTO(void *buf, const ssize_t sz), + + TP_ARGS(buf, sz), + + TP_STRUCT__entry( + __dynamic_array(char, buf, sz) + ), + + TP_fast_assign( + memcpy(__get_dynamic_array(buf), buf, sz); + ), + + TP_printk("dat=%s", __print_hex(__get_dynamic_array(buf), + __get_dynamic_array_len(buf))) +); + +#endif /* _TRACE_DAMON_H */ + +/* This part must be outside protection */ +#include diff --git a/mm/damon.c b/mm/damon.c index facb1d7f121b..8faf3879f99e 100644 --- a/mm/damon.c +++ b/mm/damon.c @@ -9,6 +9,8 @@ #define pr_fmt(fmt) "damon: " fmt +#define CREATE_TRACE_POINTS + #include #include #include @@ -20,6 +22,7 @@ #include #include #include +#include #define damon_get_task_struct(t) \ (get_pid_task(find_vpid(t->pid), PIDTYPE_PID)) @@ -553,6 +556,7 @@ static void damon_flush_rbuffer(struct damon_ctx *ctx) */ static void damon_write_rbuf(struct damon_ctx *ctx, void *data, ssize_t size) { + trace_damon_write_rbuf(data, size); if (!ctx->rbuf_len || !ctx->rbuf) return; if (ctx->rbuf_offset + size > ctx->rbuf_len)