sched/cache: Fix rcu warning when accessing sd_llc domain

rcu_dereference_all() should be used to access the
sd_llc domain under RCU protection.

This bug was reported by sashiko.

Fixes: df0d984759 ("sched/cache: Introduce infrastructure for cache-aware load balancing")
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Co-developed-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/2dc49455e861215d8059a1c877953f0b95990038.1778703694.git.tim.c.chen@linux.intel.com
This commit is contained in:
Chen Yu 2026-05-13 13:39:18 -07:00 • committed by Peter Zijlstra
commit d943b86dfb