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[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.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Daniel Walker 2008-01-10 20:31:51 -08:00 committed by Tony Luck
parent acffc84ad9
commit 0245583ab4
1 changed files with 5 additions and 4 deletions
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9
arch/ia64/sn/kernel/sn2/sn_hwperf.c
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@ -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 @@ static int sn_hwperf_init(void)
sn_hwperf_salheap = NULL;
sn_hwperf_obj_cnt = 0;
}
up(&sn_hwperf_init_mutex);
mutex_unlock(&sn_hwperf_init_mutex);
return e;
}