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authorJes Sorensen <jes@sgi.com>2006-01-18 23:46:52 -0800
committerTony Luck <tony.luck@intel.com>2006-01-19 11:17:56 -0800
commit60f1c4443c4d391d8dfbe709f13296067b6c8021 (patch)
treed8c65c092fa1af315c994d9f6001c89999e22e20 /arch/ia64/kernel/perfmon.c
parent92ff2ecd0deddc4c5fb2140d5861d0ddd50e9e57 (diff)
[IA64] sem2mutex: arch/ia64/kernel/perfmon.c
Migrate perfmon from using an old semaphore to a completion handler. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/perfmon.c')
-rw-r--r--arch/ia64/kernel/perfmon.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 2ea4b39efffa..9c5194b385da 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -40,6 +40,7 @@
#include <linux/bitops.h>
#include <linux/capability.h>
#include <linux/rcupdate.h>
+#include <linux/completion.h>
#include <asm/errno.h>
#include <asm/intrinsics.h>
@@ -286,7 +287,7 @@ typedef struct pfm_context {
unsigned long ctx_ovfl_regs[4]; /* which registers overflowed (notification) */
- struct semaphore ctx_restart_sem; /* use for blocking notification mode */
+ struct completion ctx_restart_done; /* use for blocking notification mode */
unsigned long ctx_used_pmds[4]; /* bitmask of PMD used */
unsigned long ctx_all_pmds[4]; /* bitmask of all accessible PMDs */
@@ -1991,7 +1992,7 @@ pfm_close(struct inode *inode, struct file *filp)
/*
* force task to wake up from MASKED state
*/
- up(&ctx->ctx_restart_sem);
+ complete(&ctx->ctx_restart_done);
DPRINT(("waking up ctx_state=%d\n", state));
@@ -2706,7 +2707,7 @@ pfm_context_create(pfm_context_t *ctx, void *arg, int count, struct pt_regs *reg
/*
* init restart semaphore to locked
*/
- sema_init(&ctx->ctx_restart_sem, 0);
+ init_completion(&ctx->ctx_restart_done);
/*
* activation is used in SMP only
@@ -3687,7 +3688,7 @@ pfm_restart(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
*/
if (CTX_OVFL_NOBLOCK(ctx) == 0 && state == PFM_CTX_MASKED) {
DPRINT(("unblocking [%d] \n", task->pid));
- up(&ctx->ctx_restart_sem);
+ complete(&ctx->ctx_restart_done);
} else {
DPRINT(("[%d] armed exit trap\n", task->pid));
@@ -5089,7 +5090,7 @@ pfm_handle_work(void)
* may go through without blocking on SMP systems
* if restart has been received already by the time we call down()
*/
- ret = down_interruptible(&ctx->ctx_restart_sem);
+ ret = wait_for_completion_interruptible(&ctx->ctx_restart_done);
DPRINT(("after block sleeping ret=%d\n", ret));