gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nanosleep: add cpu_pause() in spinwait loop

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/syscall.c
View File

@ -7424,9 +7424,7 @@ SYSCALL_DECLARE(nanosleep)
ret = -EINTR; ret = -EINTR;
break; break;
} }
#ifdef POSTK_DEBUG_ARCH_DEP_43
cpu_pause(); cpu_pause();
#endif
} }
if ((ret == -EINTR) && rem) { if ((ret == -EINTR) && rem) {