Commit dcf62305 authored by Frederic Weisbecker's avatar Frederic Weisbecker Committed by Thomas Gleixner
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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: default avatarFrederic Weisbecker <frederic@kernel.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250114231507.21672-5-frederic@kernel.org
parent 3ec95571

kernel/time/timer_migration.c

+1 −3
Original line number Diff line number Diff line
@@ -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);