x86: build fix in "xen spinlock updates and performance measurements"

Ingo Molnar wrote:
> -tip testing found this build failure:
>
>  arch/x86/xen/spinlock.c: In function ‘spin_time_start’:
>  arch/x86/xen/spinlock.c:60: error: implicit declaration of function ‘xen_clocksource_read’
>
> i've excluded these new commits for now from tip/master - could you
> please send a delta fix against tip/x86/xen?

Make xen_clocksource_read non-static.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 3c70ebc50b1..1e8bfdaa20d 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -2,6 +2,7 @@
 #define XEN_OPS_H
 
 #include <linux/init.h>
+#include <linux/clocksource.h>
 #include <linux/irqreturn.h>
 #include <xen/xen-ops.h>
 
@@ -33,6 +34,7 @@ void __init xen_build_dynamic_phys_to_machine(void);
 
 void xen_init_irq_ops(void);
 void xen_setup_timer(int cpu);
+cycle_t xen_clocksource_read(void);
 void xen_setup_cpu_clockevents(void);
 unsigned long xen_tsc_khz(void);
 void __init xen_time_init(void);