[LTP] [PATCH 1/3] swapping01: skip test if zram-swap is being used

[Petr Vorel]

Hi Xu, Cyril,

> Hi!
> > ---
> >  testcases/kernel/mem/swapping/swapping01.c | 9 +++++++++
> >  1 file changed, 9 insertions(+)

> > diff --git a/testcases/kernel/mem/swapping/swapping01.c b/testcases/kernel/mem/swapping/swapping01.c
> > index 392b79d65..29c1e0443 100644
> > --- a/testcases/kernel/mem/swapping/swapping01.c
> > +++ b/testcases/kernel/mem/swapping/swapping01.c
> > @@ -67,6 +67,11 @@ static void test_swapping(void)
> >  #ifdef TST_ABI32
> >  	tst_brk(TCONF, "test is not designed for 32-bit system.");
> >  #endif
> > +	int ret;
> > +
> > +	ret = tst_system("zramctl | grep SWAP");
> > +	if (!ret)
> > +		tst_brk(TCONF, "zram-swap is being used!");

> Actually what the zramctl does is to open the /proc/swaps file and looks
> for the /dev/zram* in there. I guess that we can as well read the the
> file ourselves...

+1
Because requiring zramctl disables this test for all systems without it.


Kind regards,
Petr

> >  	init_meminfo();

> > @@ -155,4 +160,8 @@ static struct tst_test test = {
> >  	.needs_root = 1,
> >  	.forks_child = 1,
> >  	.test_all = test_swapping,
> > +	.needs_cmds = (const char *[]) {
> > +		"zramctl",
> > +		NULL
> > +	}
> >  };