From: "Michal Koutný" <mkoutny-IBi9RG/b67k@public.gmane.org>
To: David Vernet <void-gq6j2QGBifHby3iVrkZq2A@public.gmane.org>
Cc: akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
roman.gushchin-fxUVXftIFDnyG1zEObXtfA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org,
mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
kernel-team-b10kYP2dOMg@public.gmane.org,
Richard Palethorpe <rpalethorpe-IBi9RG/b67k@public.gmane.org>
Subject: Re: [PATCH v2 2/5] cgroup: Account for memory_recursiveprot in test_memcg_low()
Date: Wed, 27 Apr 2022 16:09:28 +0200 [thread overview]
Message-ID: <20220427140928.GD9823@blackbody.suse.cz> (raw)
In-Reply-To: <20220423155619.3669555-3-void-gq6j2QGBifHby3iVrkZq2A@public.gmane.org>
Hello David.
On Sat, Apr 23, 2022 at 08:56:19AM -0700, David Vernet <void-gq6j2QGBifHby3iVrkZq2A@public.gmane.org> wrote:
> This unfortunately broke the memcg tests, which asserts that a sibling
> that experienced reclaim but had a memory.low value of 0, would not
> observe any memory.low events. This patch updates test_memcg_low() to
> account for the new behavior introduced by memory_recursiveprot.
I think the test is correct, there should be no (not even recursive)
protection in this particular case (when the remaining siblings consume
all of parental protection).
This should be fixed in the kernel (see also [1], no updates from me yet
:-/)
Michal
[1] https://lore.kernel.org/lkml/20220322182248.29121-1-mkoutny-IBi9RG/b67k@public.gmane.org/
next prev parent reply other threads:[~2022-04-27 14:09 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-23 15:56 [PATCH v2 0/5] Fix bugs in memcontroller cgroup tests David Vernet
2022-04-23 15:56 ` [PATCH v2 1/5] cgroups: Refactor children cgroups in memcg tests David Vernet
[not found] ` <20220423155619.3669555-2-void-gq6j2QGBifHby3iVrkZq2A@public.gmane.org>
2022-04-26 1:56 ` Roman Gushchin
[not found] ` <20220423155619.3669555-1-void-gq6j2QGBifHby3iVrkZq2A@public.gmane.org>
2022-04-23 15:56 ` [PATCH v2 2/5] cgroup: Account for memory_recursiveprot in test_memcg_low() David Vernet
[not found] ` <20220423155619.3669555-3-void-gq6j2QGBifHby3iVrkZq2A@public.gmane.org>
2022-04-27 14:09 ` Michal Koutný [this message]
[not found] ` <20220427140928.GD9823-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2022-04-29 1:03 ` David Vernet
[not found] ` <20220429010333.5rt2jwpiumnbuapf-2sxDN0k4oOr/D8ZFBB3Vemm1Eemhq0z/AL8bYrjMMd8@public.gmane.org>
2022-04-29 9:26 ` Michal Koutný
[not found] ` <20220429092620.GA23621-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2022-05-06 16:40 ` David Vernet
[not found] ` <20220506164015.fsdsuv226nhllos5-2sxDN0k4oOr/D8ZFBB3Vemm1Eemhq0z/AL8bYrjMMd8@public.gmane.org>
2022-05-09 15:09 ` Johannes Weiner
[not found] ` <Ynkum8DeJIAtGi9y-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2022-05-10 0:44 ` Andrew Morton
[not found] ` <20220509174424.e43e695ffe0f7333c187fba8-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2022-05-10 17:43 ` Michal Koutný
[not found] ` <20220510174341.GC24172-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2022-05-11 17:53 ` Johannes Weiner
[not found] ` <Ynv4AdjeVjptnjrH-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2022-05-12 17:27 ` Michal Koutný
2022-04-23 15:56 ` [PATCH v2 3/5] cgroup: Account for memory_localevents in test_memcg_oom_group_leaf_events() David Vernet
2022-04-23 15:56 ` [PATCH v2 4/5] cgroup: Removing racy check in test_memcg_sock() David Vernet
2022-04-23 15:56 ` [PATCH v2 5/5] cgroup: Fix racy check in alloc_pagecache_max_30M() helper function David Vernet
2022-05-12 17:04 ` [PATCH v2 0/5] Fix bugs in memcontroller cgroup tests Michal Koutný
[not found] ` <20220512170410.GA16096-9OudH3eul5jcvrawFnH+a6VXKuFTiq87@public.gmane.org>
2022-05-12 17:30 ` David Vernet
[not found] ` <20220512173018.3pqlfwfigbbkoh4u-2sxDN0k4oOr/D8ZFBB3Vemm1Eemhq0z/AL8bYrjMMd8@public.gmane.org>
2022-05-12 17:44 ` David Vernet
[not found] ` <20220512174452.tr34tuh4k5jm6qjs-2sxDN0k4oOr/D8ZFBB3Vemm1Eemhq0z/AL8bYrjMMd8@public.gmane.org>
2022-05-13 17:18 ` [PATCH 0/4] memcontrol selftests fixups Michal Koutný
[not found] ` <20220513171811.730-1-mkoutny-IBi9RG/b67k@public.gmane.org>
2022-05-13 17:18 ` [PATCH 1/4] selftests: memcg: Fix compilation Michal Koutný
[not found] ` <20220513171811.730-2-mkoutny-IBi9RG/b67k@public.gmane.org>
2022-05-13 17:40 ` David Vernet
2022-05-13 18:53 ` Roman Gushchin
2022-05-13 19:09 ` Roman Gushchin
2022-05-13 17:18 ` [PATCH 2/4] selftests: memcg: Expect no low events in unprotected sibling Michal Koutný
[not found] ` <20220513171811.730-3-mkoutny-IBi9RG/b67k@public.gmane.org>
2022-05-13 17:42 ` David Vernet
2022-05-13 18:54 ` Roman Gushchin
2022-05-18 15:54 ` Michal Koutný
2022-05-13 17:18 ` [PATCH 3/4] selftests: memcg: Adjust expected reclaim values of protected cgroups Michal Koutný
[not found] ` <20220513171811.730-4-mkoutny-IBi9RG/b67k@public.gmane.org>
2022-05-13 18:52 ` Roman Gushchin
2022-05-13 17:18 ` [PATCH 4/4] selftests: memcg: Remove protection from top level memcg Michal Koutný
[not found] ` <20220513171811.730-5-mkoutny-IBi9RG/b67k@public.gmane.org>
2022-05-13 18:59 ` Roman Gushchin
2022-05-18 0:24 ` Andrew Morton
[not found] ` <20220517172443.3e524a8319c693ab24c5f22e-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2022-05-18 0:52 ` Roman Gushchin
2022-05-18 15:44 ` Michal Koutný
2022-05-13 19:14 ` David Vernet
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