b57a73f8e7
interacts with interrupts, query ACPI and use MWAIT for entrance into
Cx sleep states. Support C1 "I/O then halt" mode. See Intel'
document 302223-007 "Intelб╝ Processor Vendor-Specific ACPI Interface
Specification" for description.
Move the acpi_cpu_c1() function into x86/cpu_machdep.c and use
it instead of inlining "sti; hlt" sequence in several places.
In the acpi(4) man page, besides documenting the dev.cpu.N.cx_methods
sysctl, correct the names for dev.cpu.N.{cx_usage,cx_lowest,cx_supported}
sysctls.
Both jkim and avg have some other patches implementing the mwait
functionality; this work is unrelated. Linux does not rely on the
ACPI to provide correct tables describing Cx modes. Instead, the
driver has pre-defined knowledge of the CPU models, it was supplied by
Intel.
Tested by: pho (previous versions)
Sponsored by: The FreeBSD Foundation
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| colldef | ||
| dict | ||
| doc | ||
| dtrace | ||
| examples | ||
| i18n | ||
| keys | ||
| man | ||
| me | ||
| misc | ||
| mk | ||
| mklocale | ||
| monetdef | ||
| msgdef | ||
| numericdef | ||
| security | ||
| sendmail | ||
| skel | ||
| snmp | ||
| syscons | ||
| tabset | ||
| termcap | ||
| tests | ||
| timedef | ||
| vt | ||
| zoneinfo | ||
| Makefile | ||
| Makefile.inc | ||