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

1 files changed, 2 insertions, 21 deletions

diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index eae8cd808f07..f64f381b4d82 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -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;
 }