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Commit 949cccdb authored by Pranith Kumar's avatar Pranith Kumar Committed by Paul E. McKenney
Browse files

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: default avatarPranith Kumar <bobby.prani@gmail.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
parent f4579fc5

kernel/rcu/tree_plugin.h

+4 −1
Original line number Original line Diff line number Diff line
@@ -2440,7 +2440,10 @@ void __init rcu_init_nohz(void) 
#endif /* #if defined(CONFIG_NO_HZ_FULL) */

#endif /* #if defined(CONFIG_NO_HZ_FULL) */





	if (!have_rcu_nocb_mask && need_rcu_nocb_mask) {

	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;

		have_rcu_nocb_mask = true;

	}

	}

	if (!have_rcu_nocb_mask)

	if (!have_rcu_nocb_mask)