diff options
| author | davide <davide@FreeBSD.org> | 2013-02-28 11:27:01 +0000 |
|---|---|---|
| committer | davide <davide@FreeBSD.org> | 2013-02-28 11:27:01 +0000 |
| commit | 240074414d4919ebd889f27087c72783a7ed9b19 (patch) | |
| tree | 7a1117f07eabc4a3e83f7785ad250cefbcef872a /sys/dev | |
| parent | 2bf12d0c7ceced74a813d6940dd07310a11d6a2a (diff) | |
| download | FreeBSD-src-240074414d4919ebd889f27087c72783a7ed9b19.zip FreeBSD-src-240074414d4919ebd889f27087c72783a7ed9b19.tar.gz | |
MFcalloutng (r247427 by mav):
We don't need any precision here. Let it be fast and dirty shift then
slow and excessively precise 64-bit division.
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/acpica/acpi_cpu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/dev/acpica/acpi_cpu.c b/sys/dev/acpica/acpi_cpu.c index df4c4c2..e58d980 100644 --- a/sys/dev/acpica/acpi_cpu.c +++ b/sys/dev/acpica/acpi_cpu.c @@ -981,8 +981,8 @@ acpi_cpu_idle(sbintime_t sbt) /* Find the lowest state that has small enough latency. */ us = sc->cpu_prev_sleep; - if (sbt >= 0 && us > sbt / SBT_1US) - us = sbt / SBT_1US; + if (sbt >= 0 && us > (sbt >> 12)) + us = (sbt >> 12); cx_next_idx = 0; if (cpu_disable_deep_sleep) i = min(sc->cpu_cx_lowest, sc->cpu_non_c3); |
