From: Roman Gushchin <roman.gushchin@linux.dev>
To: "Michal Koutný" <mkoutny@suse.com>
Cc: void@manifault.com, akpm@linux-foundation.org,
cgroups@vger.kernel.org, hannes@cmpxchg.org, kernel-team@fb.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
mhocko@kernel.org, shakeelb@google.com, tj@kernel.org,
Richard Palethorpe <rpalethorpe@suse.de>
Subject: Re: [PATCH 4/4] selftests: memcg: Remove protection from top level memcg
Date: Fri, 13 May 2022 11:59:56 -0700 [thread overview]
Message-ID: <Yn6qrHHS935ppX98@carbon> (raw)
In-Reply-To: <20220513171811.730-5-mkoutny@suse.com>
On Fri, May 13, 2022 at 07:18:11PM +0200, Michal Koutny wrote:
> The reclaim is triggered by memory limit in a subtree, therefore the
> testcase does not need configured protection against external reclaim.
>
> Also, correct/deduplicate respective comments
>
> Signed-off-by: Michal Koutný <mkoutny@suse.com>
> ---
> tools/testing/selftests/cgroup/test_memcontrol.c | 12 ++++--------
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c
> index 9ffacf024bbd..9d370aafd799 100644
> --- a/tools/testing/selftests/cgroup/test_memcontrol.c
> +++ b/tools/testing/selftests/cgroup/test_memcontrol.c
> @@ -247,7 +247,7 @@ static int cg_test_proc_killed(const char *cgroup)
>
> /*
> * First, this test creates the following hierarchy:
> - * A memory.min = 50M, memory.max = 200M
> + * A memory.min = 0, memory.max = 200M
> * A/B memory.min = 50M, memory.current = 50M
> * A/B/C memory.min = 75M, memory.current = 50M
> * A/B/D memory.min = 25M, memory.current = 50M
> @@ -257,7 +257,7 @@ static int cg_test_proc_killed(const char *cgroup)
> * Usages are pagecache, but the test keeps a running
> * process in every leaf cgroup.
> * Then it creates A/G and creates a significant
> - * memory pressure in it.
> + * memory pressure in A.
> *
> * A/B memory.current ~= 50M
> * A/B/C memory.current ~= 29M
> @@ -335,8 +335,6 @@ static int test_memcg_min(const char *root)
> (void *)(long)fd);
> }
>
> - if (cg_write(parent[0], "memory.min", "50M"))
> - goto cleanup;
> if (cg_write(parent[1], "memory.min", "50M"))
> goto cleanup;
> if (cg_write(children[0], "memory.min", "75M"))
> @@ -404,8 +402,8 @@ static int test_memcg_min(const char *root)
>
> /*
> * First, this test creates the following hierarchy:
> - * A memory.low = 50M, memory.max = 200M
> - * A/B memory.low = 50M, memory.current = 50M
> + * A memory.low = 0, memory.max = 200M
> + * A/B memory.low = 50M, memory.current = ...
Can you, please, just remove "memory.current = ...", it's not
because obvious what "..." means here.
Other than that: Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Thank you!
next prev parent reply other threads:[~2022-05-13 19:00 UTC|newest]
Thread overview: 37+ 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
2022-04-26 1:56 ` Roman Gushchin
2022-04-23 15:56 ` [PATCH v2 2/5] cgroup: Account for memory_recursiveprot in test_memcg_low() David Vernet
2022-04-27 14:09 ` Michal Koutný
2022-04-29 1:03 ` David Vernet
2022-04-29 9:26 ` Michal Koutný
2022-05-06 16:40 ` David Vernet
2022-05-09 15:09 ` Johannes Weiner
2022-05-10 0:44 ` Andrew Morton
2022-05-10 17:43 ` Michal Koutný
2022-05-11 17:53 ` Johannes Weiner
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
2022-05-12 17:30 ` David Vernet
2022-05-12 17:44 ` David Vernet
2022-05-13 17:18 ` [PATCH 0/4] memcontrol selftests fixups Michal Koutný
2022-05-13 17:18 ` [PATCH 1/4] selftests: memcg: Fix compilation Michal Koutný
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
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
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
2022-05-13 18:59 ` Roman Gushchin [this message]
2022-05-18 0:24 ` Andrew Morton
2022-05-18 0:52 ` Roman Gushchin
2022-05-18 15:44 ` Michal Koutný
2022-05-13 19:14 ` David Vernet
2022-05-18 15:40 [PATCH 0/4] memcontrol selftests fixups Michal Koutný
2022-05-18 15:40 ` [PATCH 4/4] selftests: memcg: Remove protection from top level memcg Michal Koutný
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