Commit 5b8621a6 authored Jun 08, 2013 by Frederic Weisbecker

nohz: Remove obsolete check for full dynticks CPUs to be RCU nocbs

Building full dynticks now implies that all CPUs are forced
into RCU nocb mode through CONFIG_RCU_NOCB_CPU_ALL.

The dynamic check has become useless.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Borislav Petkov <bp@alien8.de>

parent 940be35a

kernel/time/tick-sched.c

+0 −10

Original line number	Diff line number	Diff line
		@@ -351,16 +351,6 @@ void __init tick_nohz_init(void)
		}

		cpu_notifier(tick_nohz_cpu_down_callback, 0);

		/* Make sure full dynticks CPU are also RCU nocbs */
		for_each_cpu(cpu, nohz_full_mask) {
		if (!rcu_is_nocb_cpu(cpu)) {
		pr_warning("NO_HZ: CPU %d is not RCU nocb: "
		"cleared from nohz_full range", cpu);
		cpumask_clear_cpu(cpu, nohz_full_mask);
		}
		}

		cpulist_scnprintf(nohz_full_buf, sizeof(nohz_full_buf), nohz_full_mask);
		pr_info("NO_HZ: Full dynticks CPUs: %s.\n", nohz_full_buf);
		}