[LTP] [PATCH v1 30/31] testcases: sysfs: Add sys_swap01

[Cyril Hrubis]

Hi!
> > @@ -25,3 +25,4 @@ sys_block_size01 sys_block_size01
> >  sys_hugepages01 sys_hugepages01
> >  sys_hugepages02 sys_hugepages02
> >  sys_ksm01 sys_ksm01
> > +sys_swap01 sys_swap01
> 
> This should be sys_mm_swap01; otherwise, the runtest file cannot
> find the correct test to execute.

Fixed.

> > --- /dev/null
> > +++ b/testcases/kernel/sysfs/kernel/mm/swap/sys_mm_swap01.c
> > @@ -0,0 +1,32 @@
> > +// SPDX-License-Identifier: GPL-2.0-or-later
> > +/*
> > + * Copyright (c) 2026 Cyril Hrubis <chrubis@suse.cz>
> > + */
> > +
> > +/*\
> > + * Sanity check for /sys/kernel/mm/swap/vma_ra_enabled.
> > + *
> > + * Unlike most other boolean sysfs tunables which use 0/1, this one is
> > + * formatted as the strings "true" or "false", so it needs its own check
> > + * rather than TST_SYSFS_ASSERT_BOOL().
> > + *
> > + * The test skips with TCONF when the attribute is not present.
> > + */
> > +
> > +#include "tst_test.h"
> > +#include "tst_sysfs_assert.h"
> > +
> > +#define VMA_RA "/sys/kernel/mm/swap/vma_ra_enabled"
> 
> I suggest adding all of those path definitions to tst_path_defs.h
> and unifying the common macro names.

I didn't fix that one yet, since I wanted to send v2 today. If we agree
that we want that I will fix this in subsequent versions or before
applying.

> Also, we need to add the sysfs/ directory to testcases/kernel/Makefile
> so they can build successfully by default.
> 
> --- a/testcases/kernel/Makefile
> +++ b/testcases/kernel/Makefile
> @@ -36,6 +36,7 @@ SUBDIRS                       += connectors \
>                            sched \
>                            security \
>                            sound \
> +                          sysfs \
>                            thermal \
>                            tracing \
>                            uevents \
> 

Fixed.

-- 
Cyril Hrubis
chrubis@suse.cz