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kernel-ark/include/asm-i386
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Venkatesh Pallipadi dfde5d62ed [CPUFREQ][8/8] acpi-cpufreq: Add support for freq feedback from hardware 
Enable ondemand governor and acpi-cpufreq to use IA32_APERF and IA32_MPERF MSR
to get active frequency feedback for the last sampling interval. This will
make ondemand take right frequency decisions when hardware coordination of
frequency is going on.

Without APERF/MPERF, ondemand can take wrong decision at times due
to underlying hardware coordination or TM2.
Example:
* CPU 0 and CPU 1 are hardware cooridnated.
* CPU 1 running at highest frequency.
* CPU 0 was running at highest freq. Now ondemand reduces it to
  some intermediate frequency based on utilization.
* Due to underlying hardware coordination with other CPU 1, CPU 0 continues to
  run at highest frequency (as long as other CPU is at highest).
* When ondemand samples CPU 0 again next time, without actual frequency
  feedback from APERF/MPERF, it will think that previous frequency change
  was successful and can go to wrong target frequency. This is because it
  thinks that utilization it has got this sampling interval is when running at
  intermediate frequency, rather than actual highest frequency.

More information about IA32_APERF IA32_MPERF MSR:
Refer to IA-32 Intel® Architecture Software Developer's Manual at
http://developer.intel.com

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-15 19:57:11 -04:00
..
mach-bigsmp [PATCH] x86: convert bigsmp to use flat physical mode 2006-01-06 08:33:37 -08:00
mach-default IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
mach-es7000 [PATCH] i386: Allow to use GENERICARCH for UP kernels 2006-09-26 10:52:26 +02:00
mach-generic [PATCH] x86: sutomatically enable bigsmp when we have more than 8 CPUs 2005-09-05 00:06:10 -07:00
mach-numaq
mach-summit [PATCH] i383 numa: fix numaq/summit apicid conflict 2006-10-03 18:46:10 -07:00
mach-visws IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
mach-voyager IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
8253pit.h
a.out.h
acpi.h [PATCH] i386: Replace i386 open-coded cmdline parsing with 2006-09-26 10:52:32 +02:00
agp.h [PATCH] i386: inline asm cleanup 2005-09-05 00:06:11 -07:00
alternative-asm.i Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
alternative.h [PATCH] i386: Remove alternative_smp 2006-08-30 16:05:15 -07:00
apic.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
apicdef.h x86_64: Remove stale lapic definition from apicdef.h 2006-04-01 22:50:03 -05:00
arch_hooks.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
atomic.h i386: improve and correct inline asm memory constraints 2006-07-08 15:24:18 -07:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
boot.h
bug.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
bugs.h [PATCH] namespaces: utsname: use init_utsname when appropriate 2006-10-02 07:57:21 -07:00
byteorder.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
cache.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
cacheflush.h [PATCH] x86/x86_64: mark rodata section read only: x86 parts 2006-01-06 08:33:36 -08:00
checksum.h [NET]: Fix ipl=>ihl typo in ip_fast_csum 2005-08-29 16:02:48 -07:00
cpu.h [PATCH] Register sysfs file for hotplugged new node 2006-06-27 17:32:36 -07:00
cpufeature.h [PATCH] x86_64: i386/x86-64 Add nmi watchdog support for new Intel CPUs 2006-06-26 10:48:22 -07:00
cputime.h
current.h [PATCH] mark several functions __always_inline 2006-01-14 18:27:15 -08:00
debugreg.h
delay.h [PATCH] Time: i386 Conversion - part 3: Enable Generic Timekeeping 2006-06-26 09:58:21 -07:00
desc.h [PATCH] i386: Fix pack_descriptor() 2006-09-26 10:52:40 +02:00
div64.h [PATCH] include/asm-i386/: "extern inline" -> "static inline" 2005-09-10 10:06:34 -07:00
dma-mapping.h [PATCH] Use valid_dma_direction() in include/asm-i386/dma-mapping.h 2006-09-29 09:18:10 -07:00
dma.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
dmi.h [PATCH] x86_64: Implement early DMI scanning 2006-03-25 09:10:55 -08:00
dwarf2.h [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder 2006-09-26 10:52:41 +02:00
e820.h [PATCH] x86: Remove incorrect comment about ACPI e820 entries 2006-09-26 10:52:38 +02:00
edac.h [PATCH] EDAC: core EDAC support code 2006-01-18 19:20:31 -08:00
elf.h [PATCH] namespaces: utsname: switch to using uts namespaces 2006-10-02 07:57:21 -07:00
emergency-restart.h
errno.h
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
fixmap.h [PATCH] x86: make __FIXADDR_TOP variable to allow it to make space for a hypervisor 2006-09-26 08:48:55 -07:00
floppy.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
frame.i Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
futex.h i386: improve and correct inline asm memory constraints 2006-07-08 15:24:18 -07:00
genapic.h [PATCH] i386: Allow to use GENERICARCH for UP kernels 2006-09-26 10:52:26 +02:00
hardirq.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
highmem.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
hpet.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
hw_irq.h [PATCH] i386/x86_64: Remove global IO_APIC_VECTOR 2006-10-08 12:24:02 -07:00
hypertransport.h [PATCH] Initial generic hypertransport interrupt support 2006-10-04 07:55:29 -07:00
i387.h [PATCH] i386: fix broken FP exception handling 2006-04-29 14:13:16 -07:00
i8253.h
i8259.h
ide.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
intel_arch_perfmon.h [PATCH] x86: i386/x86-64 Add nmi watchdog support for new Intel CPUs 2006-09-26 10:52:27 +02:00
io_apic.h [PATCH] genirq: i386 irq: Remove the msi assumption that irq == vector 2006-10-04 07:55:28 -07:00
io.h [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h
ipc.h
ipcbuf.h
irq_regs.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
irq.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
irqflags.h [PATCH] lockdep: irqtrace cleanup of include/asm-i386/irqflags.h 2006-07-03 15:27:03 -07:00
ist.h
k8.h [PATCH] x86_64: Clean and enhance up K8 northbridge access code 2006-06-26 10:48:15 -07:00
Kbuild [PATCH] Split i386 and x86_64 ptrace.h 2006-09-26 08:49:10 -07:00
kdebug.h [PATCH] Notify page fault call chain for i386 2006-06-26 09:58:22 -07:00
kexec.h [PATCH] i386: Avoid overwriting the current pgd (V4, i386) 2006-09-26 10:52:38 +02:00
kmap_types.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
kprobes.h [PATCH] IA64: kprobe invalidate icache of jump buffer 2006-07-31 13:28:38 -07:00
ldt.h
linkage.h
local.h i386: improve and correct inline asm memory constraints 2006-07-08 15:24:18 -07:00
math_emu.h
mc146818rtc.h
mca_dma.h [PATCH] kernel-doc for kernel/dma.c 2006-10-03 08:03:41 -07:00
mca.h
mce.h [PATCH] Don't trigger full rebuild via CONFIG_X86_MCE 2006-06-23 07:42:56 -07:00
mman.h [PATCH] add asm-generic/mman.h 2006-02-15 15:32:22 -08:00
mmu_context.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
mmu.h [PATCH] vdso: randomize the i386 vDSO by moving it into a vma 2006-06-27 17:32:38 -07:00
mmx.h
mmzone.h [PATCH] convert i386 NUMA KVA space to bootmem 2006-09-26 08:48:45 -07:00
module.h [PATCH] Base support for AMD Geode GX/LX processors 2006-01-06 08:33:38 -08:00
mpspec_def.h [PATCH] mpspec: remove unneeded packed attribute 2006-01-06 08:33:39 -08:00
mpspec.h [PATCH] mptspec: remove duplicate #include 2006-04-11 06:18:34 -07:00
msgbuf.h
msidef.h [PATCH] genirq: i386 irq: Move msi message composition into io_apic.c 2006-10-04 07:55:28 -07:00
msr.h [CPUFREQ][8/8] acpi-cpufreq: Add support for freq feedback from hardware 2006-10-15 19:57:11 -04:00
mtrr.h [PATCH] Don't trigger full rebuild via CONFIG_MTRR 2006-06-23 07:42:56 -07:00
mutex.h [PATCH] i386: Remove lock section support in mutex.h 2006-09-26 10:52:31 +02:00
namei.h
nmi.h [PATCH] x86: Clean up x86 NMI sysctls 2006-09-30 01:47:55 +02:00
numa.h [PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments 2005-09-12 10:49:57 -07:00
numaq.h
page.h [PATCH] vdso: randomize the i386 vDSO by moving it into a vma 2006-06-27 17:32:38 -07:00
param.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
parport.h
pci-direct.h
pci.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
percpu.h
pgalloc.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
pgtable-2level-defs.h
pgtable-2level.h [PATCH] paravirt: optimize ptep establish for pae 2006-10-01 00:39:34 -07:00
pgtable-3level-defs.h
pgtable-3level.h [PATCH] paravirt: remove set pte atomic 2006-10-01 00:39:34 -07:00
pgtable.h [PATCH] paravirt: update pte hook 2006-10-01 00:39:34 -07:00
poll.h [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 2006-03-25 08:22:56 -08:00
posix_types.h i386: improve and correct inline asm memory constraints 2006-07-08 15:24:18 -07:00
processor.h ACPI: Processor native C-states using MWAIT 2006-10-14 00:35:39 -04:00
ptrace-abi.h [PATCH] Split i386 and x86_64 ptrace.h 2006-09-26 08:49:10 -07:00
ptrace.h [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
resource.h
rtc.h
rwlock.h [PATCH] i386: Clean up spin/rwlocks 2006-09-26 10:52:32 +02:00
rwsem.h [PATCH] i386: Remove lock section support in rwsem.h 2006-09-26 10:52:31 +02:00
scatterlist.h
seccomp.h
sections.h
segment.h [PATCH] i386: Allow a kernel not to be in ring 0 2006-09-26 10:52:39 +02:00
semaphore.h [PATCH] i386: Use early clobbers for semaphores now 2006-09-27 14:39:51 -07:00
sembuf.h
serial.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
setup.h [PATCH] headers_check: don't expose PFN stuff to userspace in <asm-i386/setup.h> 2006-09-13 07:32:16 -07:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h [PATCH] headers_check: move inclusion of <linux/linkage.h> in <asm-i386/signal.h> 2006-09-13 07:32:15 -07:00
smp.h [PATCH] make kernels with CONFIG_X86_GENERIC and !CONFIG_SMP compilable 2006-10-06 11:15:12 -07:00
socket.h [AF_UNIX]: Datagram getpeersec 2006-06-29 16:58:06 -07:00
sockios.h
sparsemem.h
spinlock_types.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
spinlock.h [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
srat.h
stacktrace.h [PATCH] i386: Do stacktracer conversion too 2006-09-26 10:52:34 +02:00
stat.h [PATCH] 2TB files: st_blocks is invalid when calling stat64 2006-03-26 08:57:00 -08:00
statfs.h
string.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
suspend.h
sync_bitops.h [PATCH] x86: implement always-locked bit ops, for memory shared with an SMP hypervisor 2006-09-26 08:48:55 -07:00
system.h [PATCH] x86: implement always-locked bit ops, for memory shared with an SMP hypervisor 2006-09-26 08:48:55 -07:00
termbits.h
termios.h
therm_throt.h [PATCH] x86: Add a cumulative thermal throttle event counter. 2006-09-26 10:52:42 +02:00
thread_info.h [PATCH] i386: use thread_info flags for debug regs and IO bitmaps 2006-07-09 18:47:12 -07:00
timer.h [PATCH] Time: i386 Conversion - part 3: Enable Generic Timekeeping 2006-06-26 09:58:21 -07:00
timex.h [PATCH] Time: i386 Conversion - part 2: Rework TSC Support 2006-06-26 09:58:21 -07:00
tlb.h
tlbflush.h [PATCH] i386: Minor fixes & cleanup to tlb flush 2006-09-26 10:52:29 +02:00
topology.h [PATCH] sched: introduce child field in sched_domain 2006-10-03 08:04:06 -07:00
tsc.h [PATCH] x86: remove config.h includes from asm-i386 & asm-x86_64 2006-09-26 10:52:36 +02:00
types.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
uaccess.h [PATCH] uaccess.h: match kernel-doc and function names 2006-10-11 11:14:24 -07:00
ucontext.h
unaligned.h
unistd.h [PATCH] epoll_pwait() 2006-10-11 11:14:21 -07:00
unwind.h [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder 2006-09-26 10:52:41 +02:00
user.h
vga.h [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
vic.h [VOYAGER] fix up ptregs removal mess 2006-10-12 22:25:03 -05:00
vm86.h [PATCH] Make vm86 support optional 2006-01-08 20:14:11 -08:00
voyager.h [VOYAGER] fix up attribute packed specifiers in voyager.h 2006-10-12 22:23:18 -05:00
xor.h [PATCH] i386: inline asm cleanup 2005-09-05 00:06:11 -07:00