lib/test_cpumask: fix cpu_possible_mask last test
authorSander Vanheule <sander@svanheule.net>
Tue, 23 Aug 2022 06:12:20 +0000 (08:12 +0200)
committerYury Norov <yury.norov@gmail.com>
Wed, 24 Aug 2022 15:35:42 +0000 (08:35 -0700)
commitfbbc94d8486c6d683650269154c9a7d8897f35d7
tree42a3d4c2c2cbff9ed811cc415fcd569d2dcae2b3
parent6afd9db630b037c7f0bc939368216512568de607
lib/test_cpumask: fix cpu_possible_mask last test

Since cpumask_first() on the cpu_possible_mask must return at most
nr_cpu_ids - 1 for a valid result, cpumask_last() cannot return anything
larger than this value.  As test_cpumask_weight() also verifies that the
total weight of cpu_possible_mask must equal nr_cpu_ids, the last bit
set in this mask must be at nr_cpu_ids - 1.

Fixes: c41e8866c28c ("lib/test: introduce cpumask KUnit test suite")
Link: https://lore.kernel.org/lkml/346cb279-8e75-24b0-7d12-9803f2b41c73@riseup.net/
Reported-by: Maíra Canal <mairacanal@riseup.net>
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Maíra Canal <mairacanal@riseup.net>
Reviewed-by: David Gow <davidgow@google.com>
Acked-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
lib/test_cpumask.c