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prepare for a condition variable for each process. (Redmine#193)

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This commit is contained in:
Tomoki Shirasawa
2014-07-25 09:17:43 +09:00
parent 101a0f6e4a
commit 10190e9ed6
3 changed files with 7 additions and 6 deletions
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4
executer/kernel/syscall.c
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@@ -255,6 +255,7 @@ retry_alloc:
/* Prepare per-process wait queue head */
wqhln->pid = current->tgid;
wqhln->req = 0;
init_waitqueue_head(&wqhln->wq_syscall);
irqflags = ihk_ikc_spinlock_lock(&channel->wq_list_lock);
@@ -271,7 +272,7 @@ retry_alloc:
ihk_ikc_spinlock_unlock(&channel->wq_list_lock, irqflags);
/* wait for response */
error = wait_event_interruptible(wqhln->wq_syscall, channel->req);
error = wait_event_interruptible(wqhln->wq_syscall, wqhln->req);
/* Remove per-process wait queue head */
irqflags = ihk_ikc_spinlock_lock(&channel->wq_list_lock);
@@ -283,7 +284,6 @@ retry_alloc:
printk("remote_page_fault:interrupted. %d\n", error);
goto out;
}
channel->req = 0;
if (!req->valid) {
printk("remote_page_fault:not valid\n");
}