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MIPS: call set_cpu_online() on cpu being brought up with irq disabled 

To prevent a problem as commit 5fbd036b [sched: Cleanup cpu_active madness]
and commit 2baab4e9 [sched: Fix select_fallback_rq() vs cpu_active/cpu_online]
try to resolve, move set_cpu_online() to the brought up CPU and with irq
disabled.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3851/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Yong Zhang 2012-07-19 09:13:53 +02:00 committed by Ralf Baechle
parent 5309bdac70
commit b9a09a0660
1 changed files with 2 additions and 2 deletions
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4
arch/mips/kernel/smp.c
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@ -122,6 +122,8 @@ asmlinkage __cpuinit void start_secondary(void)
notify_cpu_starting(cpu);
set_cpu_online(cpu, true);
set_cpu_sibling_map(cpu);
cpu_set(cpu, cpu_callin_map);
@ -197,8 +199,6 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
while (!cpu_isset(cpu, cpu_callin_map))
udelay(100);
set_cpu_online(cpu, true);
return 0;
}