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rcu: Check the return value of zalloc_cpumask_var() 

This commit checks the return value of the zalloc_cpumask_var() used for
allocating cpumask for rcu_nocb_mask.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
This commit is contained in:
Pranith Kumar 2014-07-25 16:02:07 -07:00 committed by Paul E. McKenney
parent f4579fc57c
commit 949cccdbe6
1 changed files with 4 additions and 1 deletions
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5
kernel/rcu/tree_plugin.h
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@ -2440,7 +2440,10 @@ void __init rcu_init_nohz(void)
#endif /* #if defined(CONFIG_NO_HZ_FULL) */
if (!have_rcu_nocb_mask && need_rcu_nocb_mask) {
zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL);
if (!zalloc_cpumask_var(&rcu_nocb_mask, GFP_KERNEL)) {
pr_info("rcu_nocb_mask allocation failed, callback offloading disabled.\n");
return;
}
have_rcu_nocb_mask = true;
}
if (!have_rcu_nocb_mask)