summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorFrederic Weisbecker <frederic@kernel.org>2025-01-15 00:15:07 +0100
committerThomas Gleixner <tglx@linutronix.de>2025-01-16 14:01:09 +0100
commitdcf6230555dcd0b05e8d2dd5b128dcc4b6fc04ef (patch)
treec9818b64ae0d52735e57b0565fd2cce079fa8d17
parent3ec955713d9617059d2fc8f2816d0b95ace72256 (diff)
timers/migration: Simplify top level detection on group setup
Having a single group on a given level is enough to know this is the top level, because a root has to have at least two children, unless that root is the only group and the children are actual CPUs. Simplify the test in tmigr_setup_groups() accordingly. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250114231507.21672-5-frederic@kernel.org
-rw-r--r--kernel/time/timer_migration.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/time/timer_migration.c b/kernel/time/timer_migration.c
index 8d57f7686bb0..61633762f6bf 100644
--- a/kernel/time/timer_migration.c
+++ b/kernel/time/timer_migration.c
@@ -1624,9 +1624,7 @@ static int tmigr_setup_groups(unsigned int cpu, unsigned int node)
* be different from tmigr_hierarchy_levels, contains only a
* single group.
*/
- if (group->parent || i == tmigr_hierarchy_levels ||
- (list_empty(&tmigr_level_list[i]) &&
- list_is_singular(&tmigr_level_list[i - 1])))
+ if (group->parent || list_is_singular(&tmigr_level_list[i - 1]))
break;
} while (i < tmigr_hierarchy_levels);