[PATCH v3 5/5] lib/cpumask: reorganize cpumask_local_spread() logic

Yury Norov
2022-12-08T18:32:01Z

Now after moving all NUMA logic into sched_numa_find_nth_cpu(),
else-branch of cpumask_local_spread() is just a function call, and
we can simplify logic by using ternary operator.

While here, replace BUG() with WARN().

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
lib/cpumask.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/lib/cpumask.c b/lib/cpumask.c
index 255974cd6734..c7029fb3c372 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -127,16 +127,12 @@ unsigned int cpumask_local_spread(unsigned int i, int node)
/* Wrap: we always want a cpu. */
i %= num_online_cpus();

- if (node == NUMA_NO_NODE) {
- cpu = cpumask_nth(i, cpu_online_mask);
- if (cpu < nr_cpu_ids)
- return cpu;
- } else {
- cpu = sched_numa_find_nth_cpu(cpu_online_mask, i, node);
- if (cpu < nr_cpu_ids)
- return cpu;
- }
- BUG();
+ cpu = node == NUMA_NO_NODE ?
+ cpumask_nth(i, cpu_online_mask) :
+ sched_numa_find_nth_cpu(cpu_online_mask, i, node);
+
+ WARN_ON(cpu >= nr_cpu_ids);
+ return cpu;
}
EXPORT_SYMBOL(cpumask_local_spread);

--
2.34.1