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
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@ -17,6 +17,7 @@ config PARISC
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select GENERIC_PCI_IOMAP
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select GENERIC_PCI_IOMAP
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select IRQ_PER_CPU
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select IRQ_PER_CPU
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select GENERIC_SMP_IDLE_THREAD
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help
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help
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The PA-RISC microprocessor is designed by Hewlett-Packard and used
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The PA-RISC microprocessor is designed by Hewlett-Packard and used
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@ -334,26 +334,11 @@ void __init smp_callin(void)
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/*
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/*
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* Bring one cpu online.
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* Bring one cpu online.
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*/
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*/
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int __cpuinit smp_boot_one_cpu(int cpuid)
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int __cpuinit smp_boot_one_cpu(int cpuid, struct task_struct *idle)
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{
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{
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const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
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const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
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struct task_struct *idle;
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long timeout;
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long timeout;
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/*
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* Create an idle task for this CPU. Note the address wed* give
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* to kernel_thread is irrelevant -- it's going to start
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* where OS_BOOT_RENDEVZ vector in SAL says to start. But
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* this gets all the other task-y sort of data structures set
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* up like we wish. We need to pull the just created idle task
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* off the run queue and stuff it into the init_tasks[] array.
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* Sheesh . . .
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*/
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idle = fork_idle(cpuid);
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if (IS_ERR(idle))
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panic("SMP: fork failed for CPU:%d", cpuid);
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task_thread_info(idle)->cpu = cpuid;
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task_thread_info(idle)->cpu = cpuid;
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/* Let _start know what logical CPU we're booting
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/* Let _start know what logical CPU we're booting
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@ -397,10 +382,6 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
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udelay(100);
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udelay(100);
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barrier();
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barrier();
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}
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}
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put_task_struct(idle);
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idle = NULL;
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printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
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printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
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return -1;
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return -1;
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@ -452,7 +433,7 @@ void smp_cpus_done(unsigned int cpu_max)
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int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
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int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
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{
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{
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if (cpu != 0 && cpu < parisc_max_cpus)
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if (cpu != 0 && cpu < parisc_max_cpus)
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smp_boot_one_cpu(cpu);
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smp_boot_one_cpu(cpu, tidle);
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return cpu_online(cpu) ? 0 : -ENOSYS;
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return cpu_online(cpu) ? 0 : -ENOSYS;
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}
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}
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