From: SeongJae Park <sjpark@amazon.com>
To: <akpm@linux-foundation.org>
Cc: SeongJae Park <sjpark@amazon.de>, <Jonathan.Cameron@Huawei.com>,
<aarcange@redhat.com>, <acme@kernel.org>,
<alexander.shishkin@linux.intel.com>, <amit@kernel.org>,
<benh@kernel.crashing.org>, <brendan.d.gregg@gmail.com>,
<brendanhiggins@google.com>, <cai@lca.pw>,
<colin.king@canonical.com>, <corbet@lwn.net>, <david@redhat.com>,
<dwmw@amazon.com>, <fan.du@intel.com>, <foersleo@amazon.de>,
<gthelen@google.com>, <irogers@google.com>, <jolsa@redhat.com>,
<kirill@shutemov.name>, <mark.rutland@arm.com>, <mgorman@suse.de>,
<minchan@kernel.org>, <mingo@redhat.com>, <namhyung@kernel.org>,
<peterz@infradead.org>, <rdunlap@infradead.org>,
<riel@surriel.com>, <rientjes@google.com>, <rostedt@goodmis.org>,
<rppt@kernel.org>, <sblbir@amazon.com>, <shakeelb@google.com>,
<shuah@kernel.org>, <sj38.park@gmail.com>, <snu@amazon.de>,
<vbabka@suse.cz>, <vdavydov.dev@gmail.com>,
<yang.shi@linux.alibaba.com>, <ying.huang@intel.com>,
<linux-damon@amazon.com>, <linux-mm@kvack.org>,
<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v19 08/15] mm/damon: Add a tracepoint
Date: Tue, 4 Aug 2020 11:14:09 +0200 [thread overview]
Message-ID: <20200804091416.31039-9-sjpark@amazon.com> (raw)
In-Reply-To: <20200804091416.31039-1-sjpark@amazon.com>
From: SeongJae Park <sjpark@amazon.de>
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 <sjpark@amazon.de>
Reviewed-by: Leonard Foerster <foersleo@amazon.de>
---
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..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 <linux/damon.h>
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+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 <trace/define_trace.h>
diff --git a/mm/damon.c b/mm/damon.c
index b3420ba97fd2..65e65e779313 100644
--- a/mm/damon.c
+++ b/mm/damon.c
@@ -20,6 +20,8 @@
#define pr_fmt(fmt) "damon: " fmt
+#define CREATE_TRACE_POINTS
+
#include <linux/damon.h>
#include <linux/delay.h>
#include <linux/kthread.h>
@@ -31,6 +33,7 @@
#include <linux/sched/mm.h>
#include <linux/sched/task.h>
#include <linux/slab.h>
+#include <trace/events/damon.h>
/* Minimal region size. Every damon_region is aligned by this. */
#define MIN_REGION PAGE_SIZE
@@ -856,6 +859,7 @@ 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
next prev parent reply other threads:[~2020-08-04 9:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-04 9:14 [PATCH v19 00/15] Introduce Data Access MONitor (DAMON) SeongJae Park
2020-08-04 9:14 ` [PATCH v19 01/15] mm: " SeongJae Park
2020-08-04 9:14 ` [PATCH v19 02/15] mm/damon: Implement region based sampling SeongJae Park
2020-08-14 9:29 ` SeongJae Park
2020-08-04 9:14 ` [PATCH v19 03/15] mm/damon: Adaptively adjust regions SeongJae Park
2020-08-04 9:14 ` [PATCH v19 04/15] mm/damon: Track dynamic monitoring target regions update SeongJae Park
2020-08-04 9:14 ` [PATCH v19 05/15] mm/idle_page_tracking: Make PG_(idle|young) reusable SeongJae Park
2020-08-04 9:14 ` [PATCH v19 06/15] mm/damon: Implement callbacks for the virtual memory address spaces SeongJae Park
2020-08-04 9:14 ` [PATCH v19 07/15] mm/damon: Implement access pattern recording SeongJae Park
2020-08-04 9:14 ` SeongJae Park [this message]
2020-08-04 22:01 ` [PATCH v19 08/15] mm/damon: Add a tracepoint Steven Rostedt
2020-08-05 6:23 ` SeongJae Park
2020-08-04 9:14 ` [PATCH v19 09/15] mm/damon: Implement a debugfs interface SeongJae Park
2020-08-10 7:41 ` SeongJae Park
2020-08-04 9:14 ` [PATCH v19 10/15] damon/debugfs: Support pidfd target id SeongJae Park
2020-08-04 9:14 ` [PATCH v19 11/15] tools: Introduce a minimal user-space tool for DAMON SeongJae Park
2020-08-04 9:14 ` [PATCH v19 12/15] Documentation: Add documents " SeongJae Park
2020-08-04 9:14 ` [PATCH v19 13/15] mm/damon: Add kunit tests SeongJae Park
2020-08-04 9:14 ` [PATCH v19 14/15] mm/damon: Add user space selftests SeongJae Park
2020-08-04 9:14 ` [PATCH v19 15/15] MAINTAINERS: Update for DAMON SeongJae Park
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