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[IA64-SGI] sn2 mutex conversion

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Migrate sn2 code to use mutex and completion events rather than
semaphores.

Signed-off-by: Jes Sorensen <[email protected]>
Acked-by: Dean Nelson <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
This commit is contained in:
Jes Sorensen 2006-01-17 12:52:21 -05:00 • committed by Tony Luck
commit f9e505a9a0
6 changed files with 43 additions and 44 deletions
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3
include/asm-ia64/sn/xp.h
View file

@ -18,6 +18,7 @@
#include <linux/cache.h>
#include <linux/hardirq.h>
#include <linux/mutex.h>
#include <asm/sn/types.h>
#include <asm/sn/bte.h>
@ -359,7 +360,7 @@ typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
* the channel.
*/
struct xpc_registration {
struct semaphore sema;
struct mutex mutex;
xpc_channel_func func; /* function to call */
void *key; /* pointer to user's key */
u16 nentries; /* #of msg entries in local msg queue */

9
include/asm-ia64/sn/xpc.h
View file

@ -19,6 +19,8 @@
#include <linux/interrupt.h>
#include <linux/sysctl.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/completion.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/sn/bte.h>
@ -335,8 +337,7 @@ struct xpc_openclose_args {
* and consumed by the intended recipient.
*/
struct xpc_notify {
struct semaphore sema; /* notify semaphore */
volatile u8 type; /* type of notification */
volatile u8 type; /* type of notification */
/* the following two fields are only used if type == XPC_N_CALL */
xpc_notify_func func; /* user's notify function */
@ -465,8 +466,8 @@ struct xpc_channel {
xpc_channel_func func; /* user's channel function */
void *key; /* pointer to user's key */
struct semaphore msg_to_pull_sema; /* next msg to pull serialization */
struct semaphore wdisconnect_sema; /* wait for channel disconnect */
struct mutex msg_to_pull_mutex; /* next msg to pull serialization */
struct completion wdisconnect_wait; /* wait for channel disconnect */
struct xpc_openclose_args *local_openclose_args; /* args passed on */
/* opening or closing of channel */