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| author |   Jacob Pan <jacob.jun.pan@linux.intel.com> | 2010-05-19 12:01:25 -0700 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@linux.intel.com> | 2010-05-19 13:45:39 -0700 |
| commit | a875c01944f0d750eeb1ef3133feceb13f13c4b3 (patch) | |
| tree | cdd39431457cdeed92d67420a89296cbfb23f620 /arch/x86/include/asm/mrst.h | |
| parent | x86, mrst: add cpu type detection (diff) | |
| download | linux-dev-a875c01944f0d750eeb1ef3133feceb13f13c4b3.tar.xz linux-dev-a875c01944f0d750eeb1ef3133feceb13f13c4b3.zip | |
x86, mrst: add more timer config options
Always-on local APIC timer (ARAT) has been introduced to Medfield, along
with the platform APB timers we have more timer configuration options
between Moorestown and Medfield.
This patch adds run-time detection of avaiable timer features so that
we can treat Medfield as a variant of Moorestown and set up the optimal
timer options for each platform. i.e.
Medfield: per cpu always-on local APIC timer
Moorestown: per cpu APB timer
Manual override is possible via cmdline option x86_mrst_timer.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
LKML-Reference: <1274295685-6774-4-git-send-email-jacob.jun.pan@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/mrst.h')
| -rw-r--r-- | arch/x86/include/asm/mrst.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mrst.h b/arch/x86/include/asm/mrst.h index dc5c8500bfc7..67ad31545778 100644 --- a/arch/x86/include/asm/mrst.h +++ b/arch/x86/include/asm/mrst.h @@ -12,6 +12,7 @@ #define _ASM_X86_MRST_H extern int pci_mrst_init(void); extern int mrst_identify_cpu(void); +extern int mrst_timer_options __cpuinitdata; int __init sfi_parse_mrtc(struct sfi_table_header *table); /* |