From: Cheng-Yang Chou <yphbchou0911@gmail.com>
Date: Sun, 15 Jun 2025 20:04:14 +0000 (+0800)
Subject: sched_ext: Return NULL in llc_span
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f479fee3827aa8a532b62b41025075b25259117e;p=thirdparty%2Flinux.git

sched_ext: Return NULL in llc_span

Use NULL instead of 0 to signal no LLC domain, matching numa_span() and
the function comment.

No functional change.

Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

diff --git a/kernel/sched/ext_idle.c b/kernel/sched/ext_idle.c
index b79cbdb7999a2..dfacb0ad9b6f1 100644
--- a/kernel/sched/ext_idle.c
+++ b/kernel/sched/ext_idle.c
@@ -249,7 +249,7 @@ static struct cpumask *llc_span(s32 cpu)
 
 	sd = rcu_dereference(per_cpu(sd_llc, cpu));
 	if (!sd)
-		return 0;
+		return NULL;
 
 	return sched_domain_span(sd);
 }