Re: [PATCH 1/1] selftests/proc: use RSS in /proc/pid/smaps_rollup tearing tests

[Pedro Falcato]

On Wed, Oct 28, 2026 at 10:14:19AM +0000, Pedro Falcato wrote:
> On Tue, Oct 27, 2026 at 10:13:12PM -0700, Suren Baghdasaryan wrote:
> > Pss metrics can be affected by map count even if VMA tree stays unchanged,
> > therefore test checking VMA tree integrity can't use them. Use Rss instead
> > and pre-populate the VMAs so that Rss changes if a VMA gets skipped or
> > double-counted.
> > 
> > Fixes: ca5480fb53fa ("selftests/proc: add /proc/pid/smaps_rollup tearing tests")
> > Reported-by: kernel test robot <yi1.lai@xxxxxxxxx>
> > Closes: https://lore.kernel.org/oe-lkp/202610271934.fd287c3f-lkp@xxxxxxxxx
> > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
> 
> Reviewed-by: Pedro Falcato <pfalcato@xxxxxxx> 

Actually, now I'm wondering: isn't Rss also flaky if memory pressure occurs?

-- 
Pedro