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reduce the number of per_core calls

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This commit is contained in:
Stefan Lankes 2011-07-21 09:58:42 +02:00
parent 28a535dbeb
commit b228c2260f
1 changed files with 5 additions and 3 deletions
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8
include/metalsvm/spinlock.h
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@ -81,11 +81,13 @@ inline static int spinlock_destroy(spinlock_t* s) {
*/
inline static int spinlock_lock(spinlock_t* s) {
int32_t ticket;
task_t* curr_task;
if (BUILTIN_EXPECT(!s, 0))
return -EINVAL;
if (s->owner == per_core(current_task)->id) {
curr_task = per_core(current_task);
if (s->owner == curr_task->id) {
s->counter++;
return 0;
}
@ -94,7 +96,7 @@ inline static int spinlock_lock(spinlock_t* s) {
while(atomic_int32_read(&s->dequeue) != ticket) {
NOP1;
}
s->owner = per_core(current_task)->id;
s->owner = curr_task->id;
s->counter = 1;
return 0;
@ -181,7 +183,7 @@ inline static int spinlock_irqsave_lock(spinlock_irqsave_t* s) {
s->coreid = CORE_ID;
s->flags = flags;
s->counter = 1;
return 0;
}