MIPS: Cavium: Remove smp_reserve_lock.

There is nothing that is protected by this lock and it's getting in the
way of RT.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 97e7ce9..4b93048 100644 (file)
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -257,8 +257,6 @@ DEFINE_PER_CPU(int, cpu_state);
 
 extern void fixup_irqs(void);
 
-static DEFINE_SPINLOCK(smp_reserve_lock);
-
 static int octeon_cpu_disable(void)
 {
        unsigned int cpu = smp_processor_id();
@@ -266,8 +264,6 @@ static int octeon_cpu_disable(void)
        if (cpu == 0)
                return -EBUSY;
 
-       spin_lock(&smp_reserve_lock);
-
        set_cpu_online(cpu, false);
        cpu_clear(cpu, cpu_callin_map);
        local_irq_disable();
@@ -277,8 +273,6 @@ static int octeon_cpu_disable(void)
        flush_cache_all();
        local_flush_tlb_all();
 
-       spin_unlock(&smp_reserve_lock);
-
        return 0;
 }