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nanosleep: add cpu_pause() in spinwait loop

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Probably some energy consumption saving?

Change-Id: I888f50568db8f08751abd0a002137c3b475362dc
Fujitsu: POSTK_DEBUG_ARCH_DEP_43
This commit is contained in:
Dominique Martinet
2019-02-27 13:11:08 +09:00
committed by Dominique Martinet
parent 62772c8a24
commit e0b9c5deec
1 changed files with 0 additions and 2 deletions
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kernel/syscall.c
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@ -7424,9 +7424,7 @@ SYSCALL_DECLARE(nanosleep)
ret = -EINTR;
break;
}
#ifdef POSTK_DEBUG_ARCH_DEP_43
cpu_pause();
#endif
}
if ((ret == -EINTR) && rem) {