diff options
| author | Jung-uk Kim <jkim@FreeBSD.org> | 2011-04-07 23:28:28 +0000 |
|---|---|---|
| committer | Jung-uk Kim <jkim@FreeBSD.org> | 2011-04-07 23:28:28 +0000 |
| commit | 3453537fa54255e670f22aaf57e45ab40a14f55e (patch) | |
| tree | 664d6632a866948517ff612d5ccfb37cd5bf91db /sys/pc98 | |
| parent | cb379161b1e700f2ce5d6985085983b77410475c (diff) | |
Notes
Diffstat (limited to 'sys/pc98')
| -rw-r--r-- | sys/pc98/pc98/machdep.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c index 5e7215e57de8..4727351c84c8 100644 --- a/sys/pc98/pc98/machdep.c +++ b/sys/pc98/pc98/machdep.c @@ -1072,16 +1072,17 @@ int cpu_est_clockrate(int cpu_id, uint64_t *rate) { register_t reg; - uint64_t tsc1, tsc2; + uint64_t freq, tsc1, tsc2; if (pcpu_find(cpu_id) == NULL || rate == NULL) return (EINVAL); if ((cpu_feature & CPUID_TSC) == 0) return (EOPNOTSUPP); + freq = atomic_load_acq_64(&tsc_freq); /* If we're booting, trust the rate calibrated moments ago. */ - if (cold && tsc_freq != 0) { - *rate = tsc_freq; + if (cold && freq != 0) { + *rate = freq; return (0); } @@ -1110,7 +1111,7 @@ cpu_est_clockrate(int cpu_id, uint64_t *rate) #endif tsc2 -= tsc1; - if (tsc_freq != 0) { + if (freq != 0) { *rate = tsc2 * 1000; return (0); } |