kernel/git/stable/linux.git/lib/test_cpumask.c, branch master

lib/test_cpumask: follow KUnit style guidelines

2022-08-24T15:35:42+00:00

The cpumask test suite doesn't follow the KUnit style guidelines, as laid out in Documentation/dev-tools/kunit/style.rst. The file is renamed to lib/cpumask_kunit.c to clearly distinguish it from other, non-KUnit, tests. Link: https://lore.kernel.org/lkml/346cb279-8e75-24b0-7d12-9803f2b41c73@riseup.net/ Suggested-by: Maíra Canal Signed-off-by: Sander Vanheule Reviewed-by: Maíra Canal Reviewed-by: David Gow Acked-by: Yury Norov Signed-off-by: Yury Norov

lib/test_cpumask: fix cpu_possible_mask last test

2022-08-24T15:35:42+00:00

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 Signed-off-by: Sander Vanheule Tested-by: Maíra Canal Reviewed-by: David Gow Acked-by: Yury Norov Signed-off-by: Yury Norov

lib/test_cpumask: drop cpu_possible_mask full test

2022-08-24T15:35:42+00:00

When the number of CPUs that can possibly be brought online is known at boot time, e.g. when HOTPLUG is disabled, nr_cpu_ids may be smaller than NR_CPUS. In that case, cpu_possible_mask would not be completely filled, and cpumask_full(cpu_possible_mask) can return false for valid system configurations. Without this test, cpu_possible_mask contents are still constrained by a check on cpumask_weight(), as well as tests in test_cpumask_first(), test_cpumask_last(), test_cpumask_next(), and test_cpumask_iterators(). 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 Signed-off-by: Sander Vanheule Tested-by: Maíra Canal Reviewed-by: David Gow Signed-off-by: Yury Norov

lib/test: introduce cpumask KUnit test suite

2022-07-18T00:31:41+00:00

Add a basic suite of tests for cpumask, providing some tests for empty and completely filled cpumasks. Link: https://lkml.kernel.org/r/c96980ec35c3bd23f17c3374bf42c22971545e85.1656777646.git.sander@svanheule.net Signed-off-by: Sander Vanheule Reviewed-by: Andy Shevchenko Suggested-by: Yury Norov Cc: Borislav Petkov Cc: Dave Hansen Cc: Greg Kroah-Hartman Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Marco Elver Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Valentin Schneider Signed-off-by: Andrew Morton