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sched: Don't set sd->child to NULL when it is already NULL 

Memory for sd is allocated with kzalloc_node() which will initialize its fields
with zero. In build_sched_domain() we are setting sd->child to child even if
child is NULL, which isn't required.

Lets do it only if child isn't NULL.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/f4753a1730051341003ad2ad29a3229c7356678e.1370861520.git.viresh.kumar@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Viresh Kumar 2013-06-10 16:27:19 +05:30 committed by Ingo Molnar
parent 1c63216940
commit c75e01288c
1 changed files with 1 additions and 1 deletions
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2
kernel/sched/core.c
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@ -5955,8 +5955,8 @@ struct sched_domain *build_sched_domain(struct sched_domain_topology_level *tl,
sd->level = child->level + 1;
sched_domain_level_max = max(sched_domain_level_max, sd->level);
child->parent = sd;
sd->child = child;
}
sd->child = child;
set_domain_attribute(sd, attr);
return sd;