cris: 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>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Link: http://lkml.kernel.org/r/20120420124557.789657793@linutronix.de

diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index b3abfb08aa5c3d32face736f2403fc753a0596c1..2995035812eccaf8b80f3d889470626dee7f36e2 100644 (file)
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -49,6 +49,7 @@ config CRIS
        select HAVE_GENERIC_HARDIRQS
        select GENERIC_IRQ_SHOW
        select GENERIC_IOMAP
+       select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32
 
 config HZ
        int

diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index 125ee2d7bc875a3e0c8e9e090f9119123e9d477d..ebe2cb30bd11ba9f54188ba9ad39b6dfcb800c87 100644 (file)
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -108,17 +108,12 @@ void __init smp_cpus_done(unsigned int max_cpus)
 
 /* Bring one cpu online.*/
 static int __init
-smp_boot_one_cpu(int cpuid)
+smp_boot_one_cpu(int cpuid, struct task_struct idle)
 {
        unsigned timeout;
-       struct task_struct *idle;
        cpumask_t cpu_mask;
 
        cpumask_clear(&cpu_mask);
-       idle = fork_idle(cpuid);
-       if (IS_ERR(idle))
-               panic("SMP: fork failed for CPU:%d", cpuid);
-
        task_thread_info(idle)->cpu = cpuid;
 
        /* Information to the CPU that is about to boot */
@@ -142,9 +137,6 @@ smp_boot_one_cpu(int cpuid)
                barrier();
        }
 
-       put_task_struct(idle);
-       idle = NULL;
-
        printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
        return -1;
 }
@@ -209,7 +201,7 @@ unsigned long cache_decay_ticks = 1;
 
 int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
 {
-       smp_boot_one_cpu(cpu);
+       smp_boot_one_cpu(cpu, tidle);
        return cpu_online(cpu) ? 0 : -ENOSYS;
 }