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mcreboot: -h to indicate halting CPU in idle threads (e.g., in futex_wait())

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Balazs Gerofi
2017-12-18 11:22:15 +09:00
parent bf2f38051b
commit 589504dc33
5 changed files with 26 additions and 5 deletions
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8
kernel/futex.c
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@@ -673,9 +673,11 @@ static uint64_t futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q
xchg4(&(cpu_local_var(current)->status), PS_INTERRUPTIBLE);
/* Indicate spin sleep */
irqstate = ihk_mc_spinlock_lock(&thread->spin_sleep_lock);
thread->spin_sleep = 1;
ihk_mc_spinlock_unlock(&thread->spin_sleep_lock, irqstate);
if (!idle_halt) {
irqstate = ihk_mc_spinlock_lock(&thread->spin_sleep_lock);
thread->spin_sleep = 1;
ihk_mc_spinlock_unlock(&thread->spin_sleep_lock, irqstate);
}
queue_me(q, hb);