[LTP] [PATCH v3 2/2] memcontrol04: Copy from kselftest

[Li Wang]

Richard Palethorpe <rpalethorpe@suse.com> wrote:

+// SPDX-License-Identifier: GPL-2.0
> +/*\
> + *
> + * [Description]
> + *
> + * Conversion of the forth kself test in cgroup/test_memcontrol.c.
> + *
> + * Original description:
> + * "First, this test creates the following hierarchy:
> + * A       memory.low = 50M,  memory.max = 200M
> + * A/B     memory.low = 50M,  memory.current = 50M
> + * A/B/C   memory.low = 75M,  memory.current = 50M
> + * A/B/D   memory.low = 25M,  memory.current = 50M
> + * A/B/E   memory.low = 500M, memory.current = 0
> + * A/B/F   memory.low = 0,    memory.current = 50M
> + *
> + * Usages are pagecache
> + * Then it creates A/G and creates a significant
> + * memory pressure in it.
> + *
> + * A/B    memory.current ~= 50M
> + * A/B/C  memory.current ~= 33M
> + * A/B/D  memory.current ~= 17M
> + * A/B/E  memory.current ~= 0
> + *
> + * After that it tries to allocate more than there is unprotected
> + * memory in A available, and checks that memory.low protects
> + * pagecache even in this case."
>


This is not exactly the original description of memory.low test,
it looks like modified from memory.min part.

Maybe we'd better copy from line#398~#418.
https://github.com/torvalds/linux/blob/master/tools/testing/selftests/cgroup/test_memcontrol.c#L398


-- 
Regards,
Li Wang
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linux.it/pipermail/ltp/attachments/20220301/0d2a1e1f/attachment.htm>