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Diffstat (limited to 'kern/syscall_subr.c')
-rw-r--r--kern/syscall_subr.c58
1 files changed, 23 insertions, 35 deletions
diff --git a/kern/syscall_subr.c b/kern/syscall_subr.c
index ae2d7d73..6d23462c 100644
--- a/kern/syscall_subr.c
+++ b/kern/syscall_subr.c
@@ -48,8 +48,6 @@
#include <mach/policy.h>
#endif /* MACH_FIXPRI */
-
-
/*
* swtch and swtch_pri both attempt to context switch (logic in
* thread_block no-ops the context switch if nothing would happen).
@@ -63,12 +61,9 @@
* returned, the thread should make one more check on the
* lock and then be a good citizen and really suspend.
*/
-
-void thread_depress_priority(thread_t, mach_msg_timeout_t);
-
void swtch_continue(void)
{
- register processor_t myprocessor;
+ processor_t myprocessor;
myprocessor = current_processor();
thread_syscall_return(myprocessor->runq.count > 0 ||
@@ -78,7 +73,7 @@ void swtch_continue(void)
boolean_t swtch(void)
{
- register processor_t myprocessor;
+ processor_t myprocessor;
#if NCPUS > 1
myprocessor = current_processor();
@@ -96,8 +91,8 @@ boolean_t swtch(void)
void swtch_pri_continue(void)
{
- register thread_t thread = current_thread();
- register processor_t myprocessor;
+ thread_t thread = current_thread();
+ processor_t myprocessor;
if (thread->depress_priority >= 0)
(void) thread_depress_abort(thread);
@@ -107,15 +102,10 @@ void swtch_pri_continue(void)
/*NOTREACHED*/
}
-boolean_t swtch_pri(pri)
- int pri;
+boolean_t swtch_pri(int pri)
{
- register thread_t thread = current_thread();
- register processor_t myprocessor;
-
-#ifdef lint
- pri++;
-#endif /* lint */
+ thread_t thread = current_thread();
+ processor_t myprocessor;
#if NCPUS > 1
myprocessor = current_processor();
@@ -142,7 +132,7 @@ boolean_t swtch_pri(pri)
void thread_switch_continue(void)
{
- register thread_t cur_thread = current_thread();
+ thread_t cur_thread = current_thread();
/*
* Restore depressed priority
@@ -161,13 +151,13 @@ void thread_switch_continue(void)
* Fixed priority threads that call this get what they asked for
* even if that violates priority order.
*/
-kern_return_t thread_switch(thread_name, option, option_time)
-mach_port_t thread_name;
-int option;
-mach_msg_timeout_t option_time;
+kern_return_t thread_switch(
+ mach_port_t thread_name,
+ int option,
+ mach_msg_timeout_t option_time)
{
- register thread_t cur_thread = current_thread();
- register processor_t myprocessor;
+ thread_t cur_thread = current_thread();
+ processor_t myprocessor;
ipc_port_t port;
/*
@@ -208,8 +198,8 @@ mach_msg_timeout_t option_time;
* Get corresponding thread.
*/
if (ip_active(port) && (ip_kotype(port) == IKOT_THREAD)) {
- register thread_t thread;
- register spl_t s;
+ thread_t thread;
+ spl_t s;
thread = (thread_t) port->ip_kobject;
/*
@@ -289,9 +279,9 @@ mach_msg_timeout_t option_time;
* of zero will result in no timeout being scheduled.
*/
void
-thread_depress_priority(thread, depress_time)
-register thread_t thread;
-mach_msg_timeout_t depress_time;
+thread_depress_priority(
+ thread_t thread,
+ mach_msg_timeout_t depress_time)
{
unsigned int ticks;
spl_t s;
@@ -312,8 +302,8 @@ mach_msg_timeout_t depress_time;
* sched_pri to their lowest possible values.
*/
thread->depress_priority = thread->priority;
- thread->priority = 31;
- thread->sched_pri = 31;
+ thread->priority = NRQS-1;
+ thread->sched_pri = NRQS-1;
if (ticks != 0)
set_timeout(&thread->depress_timer, ticks);
@@ -327,8 +317,7 @@ mach_msg_timeout_t depress_time;
* Timeout routine for priority depression.
*/
void
-thread_depress_timeout(thread)
-register thread_t thread;
+thread_depress_timeout(thread_t thread)
{
spl_t s;
@@ -356,8 +345,7 @@ register thread_t thread;
* Prematurely abort priority depression if there is one.
*/
kern_return_t
-thread_depress_abort(thread)
-register thread_t thread;
+thread_depress_abort(thread_t thread)
{
spl_t s;