提交 b364e2f5 编写于 作者: L Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Prevent sparc64 from invoking irq handlers on offline CPUs
  sparc64: Fix IPI call locking.
......@@ -80,8 +80,6 @@ void smp_bogo(struct seq_file *m)
i, cpu_data(i).clock_tick);
}
static __cacheline_aligned_in_smp DEFINE_SPINLOCK(call_lock);
extern void setup_sparc64_timer(void);
static volatile unsigned long callin_flag = 0;
......@@ -120,9 +118,9 @@ void __cpuinit smp_callin(void)
while (!cpu_isset(cpuid, smp_commenced_mask))
rmb();
spin_lock(&call_lock);
ipi_call_lock();
cpu_set(cpuid, cpu_online_map);
spin_unlock(&call_lock);
ipi_call_unlock();
/* idle thread is expected to have preempt disabled */
preempt_disable();
......@@ -1305,10 +1303,6 @@ int __cpu_disable(void)
c->core_id = 0;
c->proc_id = -1;
spin_lock(&call_lock);
cpu_clear(cpu, cpu_online_map);
spin_unlock(&call_lock);
smp_wmb();
/* Make sure no interrupts point to this cpu. */
......@@ -1318,6 +1312,10 @@ int __cpu_disable(void)
mdelay(1);
local_irq_disable();
ipi_call_lock();
cpu_clear(cpu, cpu_online_map);
ipi_call_unlock();
return 0;
}
......
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