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>

diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c
index 8ad3e90cc8fc4c7780173003bc531c59624adaa4..1c7259597395e587e3660b10ad4e5f1e6f8d0ba3 100644 (file)
--- a/arch/blackfin/mach-common/smp.c
+++ b/arch/blackfin/mach-common/smp.c
@@ -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);