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syscall slowdown when repeat fork/exit/wait (LTP fork13)

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This commit is contained in:
Tomoki Shirasawa
2015-03-11 16:08:26 +09:00
parent fa923da0e3
commit ed6d94a358
1 changed files with 4 additions and 3 deletions
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7
executer/kernel/control.c
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@ -491,14 +491,15 @@ retry_alloc:
ret = wait_event_interruptible(wqhln->wq_syscall, wqhln->req); ret = wait_event_interruptible(wqhln->wq_syscall, wqhln->req);
if (ret) {
return -EINTR;
}
/* Remove per-process wait queue head */ /* Remove per-process wait queue head */
irqflags = ihk_ikc_spinlock_lock(&c->wq_list_lock); irqflags = ihk_ikc_spinlock_lock(&c->wq_list_lock);
list_del(&wqhln->list); list_del(&wqhln->list);
ihk_ikc_spinlock_unlock(&c->wq_list_lock, irqflags); ihk_ikc_spinlock_unlock(&c->wq_list_lock, irqflags);
if (ret) {
kfree(wqhln);
return -EINTR;
}
kfree(wqhln); kfree(wqhln);
if (c->param.request_va->number == 61 && if (c->param.request_va->number == 61 &&