On Tue, 2016-08-30 at 17:41 -0700, Matt Ranostay wrote:
> On Tue, Aug 30, 2016 at 3:42 PM, Pandruvada, Srinivas
> <srinivas.pandruvada@intel.com> wrote:
> > 
> > Hi All,
> > 
> > I observed that using iio-sensor-proxy.service, the auto screen
> > rotation flipped on my laptop (Normal -> vertical, vertical-
> > >normal)
> > using kernel v4.8.
> > 
> > Anyone else has seen this?
> > 
> > I did a bisect and found a commit, which I am not sure how can it
> > impact.
> Could you post the results of CONFIG_TEST_HASH enabled?
Attached dmesg.txt with the CONFIG_TEST_HASH=y.

I see
[    4.276138] test_hash: __hash_32() has no arch implementation to
test.
[    4.276138] test_hash: hash_32() has no arch implementation to test.
[    4.276139] test_hash: hash_64() has no arch implementation to test.
[    4.276141] test_hash: 33152 tests passed.

Thanks,
Srinivas
> 
> Thanks,
> 
> Matt
> 
> > 
> > 
> > 
> > commit 703b5faf22fbddf984a361e6555f3a03fdba63d9
> > Author: George Spelvin <linux@sciencehorizons.net>
> > Date:   Fri Jun 10 00:22:12 2016 -0400
> > 
> >     fs/dcache.c: Save one 32-bit multiply in dcache lookup
> > 
> >     Noe that we're mixing in the parent pointer earlier, we
> >     don't need to use hash_32() to mix its bits.  Instead, we can
> >     just take the msbits of the hash value directly.
> > 
> >     For those applications which use the partial_name_hash(),
> >     move the multiply to end_name_hash.
> > 
> >     Signed-off-by: George Spelvin <linux@sciencehorizons.net>
> >     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
> > 
> > 
> > Thanks,
> > Srinivas