linux-kernel - [RFC v3 5/7] mm/damon-test: Add kunit test case for regions age accounting

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200225102300.23895-6-sjpark@amazon.com>
Date:   Tue, 25 Feb 2020 11:22:58 +0100
From:   SeongJae Park <sjpark@...zon.com>
To:     <akpm@...ux-foundation.org>
CC:     SeongJae Park <sjpark@...zon.de>, <aarcange@...hat.com>,
        <acme@...nel.org>, <alexander.shishkin@...ux.intel.com>,
        <amit@...nel.org>, <brendan.d.gregg@...il.com>,
        <brendanhiggins@...gle.com>, <cai@....pw>,
        <colin.king@...onical.com>, <corbet@....net>, <dwmw@...zon.com>,
        <jolsa@...hat.com>, <kirill@...temov.name>, <mark.rutland@....com>,
        <mgorman@...e.de>, <minchan@...nel.org>, <mingo@...hat.com>,
        <namhyung@...nel.org>, <peterz@...radead.org>,
        <rdunlap@...radead.org>, <rientjes@...gle.com>,
        <rostedt@...dmis.org>, <shuah@...nel.org>, <sj38.park@...il.com>,
        <vbabka@...e.cz>, <vdavydov.dev@...il.com>,
        <yang.shi@...ux.alibaba.com>, <ying.huang@...el.com>,
        <linux-mm@...ck.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [RFC v3 5/7] mm/damon-test: Add kunit test case for regions age accounting

From: SeongJae Park <sjpark@...zon.de>

After merges of regions, each region should know their last shape in
proper way to measure the changes from the last modification and reset
the age if the changes are significant.  This commit adds kunit test
cases checking whether the regions are knowing their last shape properly
after merges of regions.

Signed-off-by: SeongJae Park <sjpark@...zon.de>
---
 mm/damon-test.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mm/damon-test.h b/mm/damon-test.h
index c7dc21325c77..2ba757357211 100644
--- a/mm/damon-test.h
+++ b/mm/damon-test.h
@@ -540,6 +540,8 @@ static void damon_test_merge_regions_of(struct kunit *test)
 
 	unsigned long saddrs[] = {0, 114, 130, 156, 170};
 	unsigned long eaddrs[] = {112, 130, 156, 170, 230};
+	unsigned long lsa[] = {0, 114, 130, 156, 184};
+	unsigned long lea[] = {100, 122, 156, 170, 230};
 	int i;
 
 	t = damon_new_task(42);
@@ -556,6 +558,9 @@ static void damon_test_merge_regions_of(struct kunit *test)
 		r = damon_nth_region_of(t, i);
 		KUNIT_EXPECT_EQ(test, r->vm_start, saddrs[i]);
 		KUNIT_EXPECT_EQ(test, r->vm_end, eaddrs[i]);
+		KUNIT_EXPECT_EQ(test, r->last_vm_start, lsa[i]);
+		KUNIT_EXPECT_EQ(test, r->last_vm_end, lea[i]);
+
 	}
 	damon_free_task(t);
 }
-- 
2.17.1