Date: Thu, 28 Feb 2013 00:14:03 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r247427 - projects/calloutng/sys/dev/acpica Message-ID: <201302280014.r1S0E3ln061629@svn.freebsd.org>
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Author: mav Date: Thu Feb 28 00:14:03 2013 New Revision: 247427 URL: http://svnweb.freebsd.org/changeset/base/247427 Log: We don't need any precision here. Let it be fast and dirty shift then slow and excessively precise 64-bit division. Modified: projects/calloutng/sys/dev/acpica/acpi_cpu.c Modified: projects/calloutng/sys/dev/acpica/acpi_cpu.c ============================================================================== --- projects/calloutng/sys/dev/acpica/acpi_cpu.c Wed Feb 27 23:17:45 2013 (r247426) +++ projects/calloutng/sys/dev/acpica/acpi_cpu.c Thu Feb 28 00:14:03 2013 (r247427) @@ -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);
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