diff options
| -rw-r--r-- | arch/x86/xen/spinlock.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index 3002ec1bb71a..a40f8508e760 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -7,6 +7,7 @@ #include <linux/debugfs.h> #include <linux/log2.h> #include <linux/gfp.h> +#include <linux/slab.h> #include <asm/paravirt.h> @@ -165,6 +166,7 @@ static int xen_spin_trylock(struct arch_spinlock *lock) return old == 0; } +static DEFINE_PER_CPU(char *, irq_name); static DEFINE_PER_CPU(int, lock_kicker_irq) = -1; static DEFINE_PER_CPU(struct xen_spinlock *, lock_spinners); @@ -362,7 +364,7 @@ static irqreturn_t dummy_handler(int irq, void *dev_id) void __cpuinit xen_init_lock_cpu(int cpu) { int irq; - const char *name; + char *name; WARN(per_cpu(lock_kicker_irq, cpu) >= 0, "spinlock on CPU%d exists on IRQ%d!\n", cpu, per_cpu(lock_kicker_irq, cpu)); @@ -385,6 +387,7 @@ void __cpuinit xen_init_lock_cpu(int cpu) if (irq >= 0) { disable_irq(irq); /* make sure it's never delivered */ per_cpu(lock_kicker_irq, cpu) = irq; + per_cpu(irq_name, cpu) = name; } printk("cpu %d spinlock event irq %d\n", cpu, irq); @@ -401,6 +404,8 @@ void xen_uninit_lock_cpu(int cpu) unbind_from_irqhandler(per_cpu(lock_kicker_irq, cpu), NULL); per_cpu(lock_kicker_irq, cpu) = -1; + kfree(per_cpu(irq_name, cpu)); + per_cpu(irq_name, cpu) = NULL; } void __init xen_init_spinlocks(void) |