ia64: sn_hwperf semaphore to mutex

Really simple mutex style semaphore user. The new API is struct mutex which is what I've converted it to with this change.

---
 arch/ia64/sn/kernel/sn2/sn_hwperf.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Index: linux-2.6.23/arch/ia64/sn/kernel/sn2/sn_hwperf.c =================================--- linux-2.6.23.orig/arch/ia64/sn/kernel/sn2/sn_hwperf.c +++ linux-2.6.23/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -33,6 +33,7 @@
#include <linux/smp_lock.h>
#include <linux/nodemask.h>
#include <linux/smp.h>
+#include <linux/mutex.h>

#include <asm/processor.h>
#include <asm/topology.h>
@@ -50,7 +51,7 @@ static void *sn_hwperf_salheap = NULL;
static int sn_hwperf_obj_cnt = 0;
static nasid_t sn_hwperf_master_nasid = INVALID_NASID; static int sn_hwperf_init(void);
-static DECLARE_MUTEX(sn_hwperf_init_mutex); +static DEFINE_MUTEX(sn_hwperf_init_mutex);

#define cnode_possible(n) ((n) < num_cnodes)

@@ -884,10 +885,10 @@ static int sn_hwperf_init(void)
int e = 0;

/* single threaded, once-only initialization */
- down(&sn_hwperf_init_mutex);
+ mutex_lock(&sn_hwperf_init_mutex);

if (sn_hwperf_salheap) {
- up(&sn_hwperf_init_mutex);
+ mutex_unlock(&sn_hwperf_init_mutex);
return e;
}

@@ -936,7 +937,7 @@ out:
sn_hwperf_salheap = NULL;
sn_hwperf_obj_cnt = 0;
}
- up(&sn_hwperf_init_mutex);
+ mutex_unlock(&sn_hwperf_init_mutex);
return e;
}

--