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parisc: Use generic idle thread allocation 

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Link: http://lkml.kernel.org/r/20120420124557.988947805@linutronix.de
This commit is contained in:
Thomas Gleixner 2012-04-20 13:05:56 +00:00
parent f0a2bc7e54
commit 9a13472374
2 changed files with 3 additions and 21 deletions
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1
arch/parisc/Kconfig
View File

@ -17,6 +17,7 @@ config PARISC
select GENERIC_PCI_IOMAP
select IRQ_PER_CPU
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_SMP_IDLE_THREAD
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used

23
arch/parisc/kernel/smp.c
View File

@ -334,26 +334,11 @@ void __init smp_callin(void)
/*
* Bring one cpu online.
*/
int __cpuinit smp_boot_one_cpu(int cpuid)
int __cpuinit smp_boot_one_cpu(int cpuid, struct task_struct *idle)
{
const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
struct task_struct *idle;
long timeout;
/*
* Create an idle task for this CPU. Note the address wed* give
* to kernel_thread is irrelevant -- it's going to start
* where OS_BOOT_RENDEVZ vector in SAL says to start. But
* this gets all the other task-y sort of data structures set
* up like we wish. We need to pull the just created idle task
* off the run queue and stuff it into the init_tasks[] array.
* Sheesh . . .
*/
idle = fork_idle(cpuid);
if (IS_ERR(idle))
panic("SMP: fork failed for CPU:%d", cpuid);
task_thread_info(idle)->cpu = cpuid;
/* Let _start know what logical CPU we're booting
@ -397,10 +382,6 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
udelay(100);
barrier();
}
put_task_struct(idle);
idle = NULL;
printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
return -1;
@ -452,7 +433,7 @@ void smp_cpus_done(unsigned int cpu_max)
int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
if (cpu != 0 && cpu < parisc_max_cpus)
smp_boot_one_cpu(cpu);
smp_boot_one_cpu(cpu, tidle);
return cpu_online(cpu) ? 0 : -ENOSYS;
}