linux-kernel - [PATCH v3 04/13] sched/core: Remove unnecessary null-pointer check

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Date:	Mon, 25 Jul 2016 14:34:21 +0100
From:	Morten Rasmussen <morten.rasmussen@....com>
To:	peterz@...radead.org, mingo@...hat.com
Cc:	dietmar.eggemann@....com, yuyang.du@...el.com,
	vincent.guittot@...aro.org, mgalbraith@...e.de,
	sgurrappadi@...dia.com, freedom.tan@...iatek.com,
	keita.kobayashi.ym@...esas.com, linux-kernel@...r.kernel.org,
	Morten Rasmussen <morten.rasmussen@....com>
Subject: [PATCH v3 04/13] sched/core: Remove unnecessary null-pointer check

Checking if the sched_domain pointer returned by sd_init() is null seems
pointless as sd_init() neither checks if it is valid to begin with nor
set it to null.

cc: Ingo Molnar <mingo@...hat.com>
cc: Peter Zijlstra <peterz@...radead.org>

Signed-off-by: Morten Rasmussen <morten.rasmussen@....com>
---
 kernel/sched/core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 4e9617a7e7d9..0a40beb46841 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6824,8 +6824,6 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
 		struct sched_domain *child, int cpu)
 {
 	struct sched_domain *sd = sd_init(tl, cpu);
-	if (!sd)
-		return child;
 
 	cpumask_and(sched_domain_span(sd), cpu_map, tl->mask(cpu));
 	if (child) {
-- 
1.9.1