diff options
Diffstat (limited to 'drivers/xen/cpu_hotplug.c')
| -rw-r--r-- | drivers/xen/cpu_hotplug.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c index 14e2d995e95..cc6513a176b 100644 --- a/drivers/xen/cpu_hotplug.c +++ b/drivers/xen/cpu_hotplug.c @@ -1,3 +1,5 @@ +#define pr_fmt(fmt) "xen:" KBUILD_MODNAME ": " fmt + #include <linux/notifier.h> #include <xen/xen.h> @@ -25,12 +27,13 @@ static void disable_hotplug_cpu(int cpu) static int vcpu_online(unsigned int cpu) { int err; - char dir[32], state[32]; + char dir[16], state[16]; sprintf(dir, "cpu/%u", cpu); - err = xenbus_scanf(XBT_NIL, dir, "availability", "%s", state); + err = xenbus_scanf(XBT_NIL, dir, "availability", "%15s", state); if (err != 1) { - printk(KERN_ERR "XENBUS: Unable to read cpu state\n"); + if (!xen_initial_domain()) + pr_err("Unable to read cpu state\n"); return err; } @@ -39,7 +42,7 @@ static int vcpu_online(unsigned int cpu) else if (strcmp(state, "offline") == 0) return 0; - printk(KERN_ERR "XENBUS: unknown state(%s) on CPU%d\n", state, cpu); + pr_err("unknown state(%s) on CPU%d\n", state, cpu); return -EINVAL; } static void vcpu_hotplug(unsigned int cpu) |