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Commit 9a134723 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

parisc: Use generic idle thread allocation 



Signed-off-by: default avatarThomas 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
parent f0a2bc7e

arch/parisc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/parisc/kernel/smp.c

+2 −21
Original line number Diff line number Diff line
@@ -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;

}