+ kselftests-cgroup-update-kmem-test-precision-tolerance.patch added to mm-hotfixes-unstable branch

+ kselftests-cgroup-update-kmem-test-precision-tolerance.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

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The patch titled
     Subject: kselftests: cgroup: update kmem test precision tolerance
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     kselftests-cgroup-update-kmem-test-precision-tolerance.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kselftests-cgroup-update-kmem-test-precision-tolerance.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Michal Hocko <mhocko@suse.com>
Subject: kselftests: cgroup: update kmem test precision tolerance
Date: Fri, 2 Dec 2022 09:50:26 +0100

OK, so this is a full patch to fix this
---
>From 7f338ed952ba4a100822004bc8399bf720b42899 Mon Sep 17 00:00:00 2001
Date: Fri, 2 Dec 2022 09:45:29 +0100
Subject: [PATCH] kselftests: cgroup: update kmem test precision tolerance

1813e51eece0 ("memcg: increase MEMCG_CHARGE_BATCH to 64") has changed
the batch size while this test case has been left behind. This has led
to a test failure reported by test bot:
not ok 2 selftests: cgroup: test_kmem # exit=1

Update the tolerance for the pcp charges to reflect the
MEMCG_CHARGE_BATCH change to fix this.

Link: https://lkml.kernel.org/r/Y4m8Unt6FhWKC6IH@dhcp22.suse.cz
Fixes: 1813e51eece0a ("memcg: increase MEMCG_CHARGE_BATCH to 64")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: kernel test robot <yujie.liu@intel.com>
  Link: https://lore.kernel.org/oe-lkp/202212010958.c1053bd3-yujie.liu@intel.com
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Tested-by: Yujie Liu <yujie.liu@intel.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Michal Koutný" <mkoutny@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/cgroup/test_kmem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/cgroup/test_kmem.c~kselftests-cgroup-update-kmem-test-precision-tolerance
+++ a/tools/testing/selftests/cgroup/test_kmem.c
@@ -24,7 +24,7 @@
  * the maximum discrepancy between charge and vmstat entries is number
  * of cpus multiplied by 32 pages.
  */
-#define MAX_VMSTAT_ERROR (4096 * 32 * get_nprocs())
+#define MAX_VMSTAT_ERROR (4096 * 64 * get_nprocs())
 
 
 static int alloc_dcache(const char *cgroup, void *arg)
_

Patches currently in -mm which might be from mhocko@suse.com are

kselftests-cgroup-update-kmem-test-precision-tolerance.patch