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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>
hifive-unleashed-5.1
Paul E. McKenney 2015-02-26 14:28:25 -08:00
parent 2a442c9c64
commit a17b4b7487
1 changed files with 2 additions and 4 deletions
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6
arch/blackfin/mach-common/smp.c
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@ -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);