Commit a17b4b74 authored Feb 26, 2015 by Paul E. McKenney

blackfin: Use common outgoing-CPU-notification code



This commit removes the open-coded CPU-offline notification with new
common code.  This change avoids calling scheduler code using RCU from
an offline CPU that RCU is ignoring.  This commit is compatible with
the existing code in not checking for timeout during a prior offline
for a given CPU.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: <adi-buildroot-devel@lists.sourceforge.net>

parent 2a442c9c

arch/blackfin/mach-common/smp.c

+2 −4

Original line number	Diff line number	Diff line
		@@ -413,16 +413,14 @@ int __cpu_disable(void)
		return 0;
		}

		static DECLARE_COMPLETION(cpu_killed);

		int __cpu_die(unsigned int cpu)
		{
		return wait_for_completion_timeout(&cpu_killed, 5000);
		return cpu_wait_death(cpu, 5);
		}

		void cpu_die(void)
		{
		complete(&cpu_killed);
		(void)cpu_report_death();

		atomic_dec(&init_mm.mm_users);
		atomic_dec(&init_mm.mm_count);