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Diffstat (limited to 'arch/s390/oprofile/init.c')
-rw-r--r--arch/s390/oprofile/init.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/s390/oprofile/init.c b/arch/s390/oprofile/init.c
index 16c76def4a9d..c63d7e58352b 100644
--- a/arch/s390/oprofile/init.c
+++ b/arch/s390/oprofile/init.c
@@ -18,6 +18,11 @@
#include <linux/fs.h>
#include "../../../drivers/oprofile/oprof.h"
+
+extern void s390_backtrace(struct pt_regs * const regs, unsigned int depth);
+
+#ifdef CONFIG_64BIT
+
#include "hwsampler.h"
#define DEFAULT_INTERVAL 4096
@@ -37,8 +42,6 @@ static int hwsampler_running; /* start_mutex must be held to change */
static struct oprofile_operations timer_ops;
-extern void s390_backtrace(struct pt_regs * const regs, unsigned int depth);
-
static int oprofile_hwsampler_start(void)
{
int retval;
@@ -172,14 +175,22 @@ static void oprofile_hwsampler_exit(void)
hwsampler_shutdown();
}
+#endif /* CONFIG_64BIT */
+
int __init oprofile_arch_init(struct oprofile_operations *ops)
{
ops->backtrace = s390_backtrace;
+#ifdef CONFIG_64BIT
return oprofile_hwsampler_init(ops);
+#else
+ return -ENODEV;
+#endif
}
void oprofile_arch_exit(void)
{
+#ifdef CONFIG_64BIT
oprofile_hwsampler_exit();
+#endif
}