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=-9.9 required=3.0 tests=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 8545BC11D30 for ; Mon, 24 Feb 2020 12:35:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D3FC20838 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="gaUqh0/M" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727460AbgBXMfF (ORCPT ); Mon, 24 Feb 2020 07:35:05 -0500 Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:62294 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726778AbgBXMfF (ORCPT ); Mon, 24 Feb 2020 07:35:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1582547705; x=1614083705; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=my+c3KBsPgzynSwlWdSBQo7WgTwmz0yazVFl0c29+sE=; b=gaUqh0/MwM+Z5OpnZ94HVoEWmVGzf6JyDsWOwn51rNDyDpEB1fgkrn2/ Gx079/v0kBRfmDmzn3dr0UA1rA+UiABJyjT3DmyVTZSClXO+68ATGmDHP Bcd9JC9CdjVeLp1+l7VSfcNiqUA5z5zP1TwdxWTlYzhYH2/vw9dYIwNsX E=; 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 Content-Type: text/plain 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) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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) -- 2.17.1