diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/amd64/isa/clock.c | 1 | ||||
| -rw-r--r-- | sys/i386/isa/clock.c | 1 | ||||
| -rw-r--r-- | sys/isa/atrtc.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/sys/amd64/isa/clock.c b/sys/amd64/isa/clock.c index 2809828..3275267 100644 --- a/sys/amd64/isa/clock.c +++ b/sys/amd64/isa/clock.c @@ -286,6 +286,7 @@ DELAY(int n) start = rdtsc(); end = start + (tsc_freq * n) / 1000000; do { + cpu_spinwait(); now = rdtsc(); } while (now < end || (now > start && end < start)); sched_unpin(); diff --git a/sys/i386/isa/clock.c b/sys/i386/isa/clock.c index a67db31..f31c7ea 100644 --- a/sys/i386/isa/clock.c +++ b/sys/i386/isa/clock.c @@ -291,6 +291,7 @@ DELAY(int n) start = rdtsc(); end = start + (tsc_freq * n) / 1000000; do { + cpu_spinwait(); now = rdtsc(); } while (now < end || (now > start && end < start)); sched_unpin(); diff --git a/sys/isa/atrtc.c b/sys/isa/atrtc.c index a67db31..f31c7ea 100644 --- a/sys/isa/atrtc.c +++ b/sys/isa/atrtc.c @@ -291,6 +291,7 @@ DELAY(int n) start = rdtsc(); end = start + (tsc_freq * n) / 1000000; do { + cpu_spinwait(); now = rdtsc(); } while (now < end || (now > start && end < start)); sched_unpin(); |
