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Merge branch 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, hotplug: In the MWAIT case of play_dead, CLFLUSH the cache line
  x86, hotplug: Move WBINVD back outside the play_dead loop
  x86, hotplug: Use mwait to offline a processor, fix the legacy case
  x86, mwait: Move mwait constants to a common header file
This commit is contained in:
Linus Torvalds
2010-10-21 13:45:38 -07:00
parent b6f7e38dbb ce5f68246b
commit 2a8b67fb72
6 changed files with 97 additions and 48 deletions
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11
arch/x86/kernel/acpi/cstate.c
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@@ -13,6 +13,7 @@
#include <acpi/processor.h>
#include <asm/acpi.h>
#include <asm/mwait.h>
/*
* Initialize bm_flags based on the CPU cache properties
@@ -65,16 +66,6 @@ static struct cstate_entry __percpu *cpu_cstate_entry; /* per CPU ptr */
static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
#define MWAIT_SUBSTATE_MASK (0xf)
#define MWAIT_CSTATE_MASK (0xf)
#define MWAIT_SUBSTATE_SIZE (4)
#define CPUID_MWAIT_LEAF (5)
#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1)
#define CPUID5_ECX_INTERRUPT_BREAK (0x2)
#define MWAIT_ECX_INTERRUPT_BREAK (0x1)
#define NATIVE_CSTATE_BEYOND_HALT (2)
static long acpi_processor_ffh_cstate_probe_cpu(void *_cx)