[LTP] [PATCH v3] Add process_madvise01 test

[Petr Vorel]

HI Andrea, Cyril,

> Hi!
> > +	TST_EXP_EXPR(map_before.swap < map_after.swap,
> > +		"Most of the memory has been swapped out: %dkB out of %dkB",
> > +		map_after.swap,

> Although it's unlikely that map_before.swap will be non-zero we should
> print the difference here, so I've changed this part to:

> map_after.swap - map_before.swap

> And pushed, thanks.

FYI this new test is failing on current openSUSE Tumbleweed (kernel 6.4.12-1):

tst_test.c:1559: TINFO: Timeout per run is 0h 00m 30s
process_madvise01.c:38: TINFO: Allocate memory: 1048576 bytes
process_madvise01.c:99: TINFO: Reclaim memory using MADV_PAGEOUT
process_madvise01.c:62: TFAIL: Expect: Most of the memory has been swapped out: 0kB out of 1024kB

Summary:
passed   0
failed   1
broken   0
skipped  0
warnings 0

Test works well on current Debian unstable with kernel 6.4.11.
Could you please have a look if it's a test or a kernel bug?

Kind regards,
Petr