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
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acpi	Pull sci into test branch	2006-10-14 02:27:52 -04:00
cpu	[CPUFREQ][8/8] acpi-cpufreq: Add support for freq feedback from hardware	2006-10-15 19:57:11 -04:00
.gitignore	[PATCH] x86: gitignore some autogenerated files for i386	2006-02-14 16:09:35 -08:00
alternative.c	[PATCH] lockdep: x86 smp alternatives workaround	2006-07-03 15:27:04 -07:00
apic.c	[PATCH] i386: irqs build fix	2006-10-06 08:53:39 -07:00
apm.c	[PATCH] kthread: convert arch/i386/kernel/apm.c	2006-09-29 09:18:12 -07:00
asm-offsets.c	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	2006-06-27 17:32:38 -07:00
bootflag.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
cpuid.c	[PATCH] Fix modular cpuid.ko	2006-07-03 21:25:20 -07:00
crash_dump.c	[PATCH] kdump: read previous kernel's memory	2006-01-10 08:01:28 -08:00
crash.c	[PATCH] stack overflow safe kdump: safe smp_send_nmi_allbutself()	2006-10-01 00:39:31 -07:00
doublefault.c	[PATCH] i386: cpu_relax() in crash.c and doublefault.c	2006-06-25 10:00:55 -07:00
early_printk.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
efi_stub.S	[PATCH] x86: remove unused include from efi_stub.S	2006-09-26 08:48:56 -07:00
efi.c	BUG_ON cleanups in arch/i386	2006-10-03 23:34:58 +02:00
entry.S	[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder	2006-09-26 10:52:41 +02:00
head.S	[PATCH] i386: Do better early exception handlers	2006-09-26 10:52:39 +02:00
hpet.c	[PATCH] Fix faulty HPET clocksource usage (fix for bug #7062)	2006-09-01 11:39:08 -07:00
i386_ksyms.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
i387.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
i8237.c	[PATCH] mmc (mainly): add "or later" clause to licence statement.	2006-10-01 00:39:23 -07:00
i8253.c	[PATCH] time: fix time going backward w/ clock=pit	2006-06-26 09:58:21 -07:00
i8259.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
init_task.c	[PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c	2006-10-02 07:57:20 -07:00
io_apic.c	[PATCH] use struct irq_chip instead of struct hw_interrupt_type	2006-10-11 11:14:14 -07:00
ioport.c	[PATCH] i386: use thread_info flags for debug regs and IO bitmaps	2006-07-09 18:47:12 -07:00
irq.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
kprobes.c	[PATCH] kretprobe spinlock deadlock patch	2006-10-02 07:57:16 -07:00
ldt.c	fix file specification in comments	2006-10-03 23:01:26 +02:00
machine_kexec.c	[PATCH] i386: Avoid overwriting the current pgd (V4, i386)	2006-09-26 10:52:38 +02:00
Makefile	[PATCH] i386: Do stacktracer conversion too	2006-09-26 10:52:34 +02:00
mca.c	[PATCH] i386: Disallow kprobes on NMI handlers	2006-09-26 10:52:36 +02:00
microcode.c	[PATCH] x86/microcode: handle sysfs error	2006-10-11 11:14:22 -07:00
module.c	[PATCH] x86: SMP alternatives	2006-03-23 07:38:04 -08:00
mpparse.c	[PATCH] i386: Support physical cpu hotplug for x86_64	2006-09-26 10:52:35 +02:00
msr.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial	2006-06-30 15:39:30 -07:00
nmi.c	[PATCH] Some config.h removals	2006-10-01 00:39:34 -07:00
numaq.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
pci-dma.c	[PATCH] gfp flags annotations - part 1	2005-10-08 15:00:57 -07:00
process.c	ACPI: Processor native C-states using MWAIT	2006-10-14 00:35:39 -04:00
ptrace.c	[PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix	2006-09-26 10:52:33 +02:00
quirks.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
reboot_fixups.c	[PATCH] i386: Remove printk about reboot fixups at reboot	2006-04-09 11:53:53 -07:00
reboot.c	[PATCH] x86: remove locally-defined ldt structure in favour of standard type	2006-09-26 08:48:55 -07:00
relocate_kernel.S	[PATCH] i386: Avoid overwriting the current pgd (V4, i386)	2006-09-26 10:52:38 +02:00
scx200.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
setup.c	[PATCH] mm: use symbolic names instead of indices for zone initialisation	2006-10-11 11:14:14 -07:00
sigframe.h	[PATCH] __user annotations for pointers in i386 sigframe	2005-09-09 10:31:59 -07:00
signal.c	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	2006-06-27 17:32:38 -07:00
smp.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
smpboot.c	[PATCH] i383 numa: fix numaq/summit apicid conflict	2006-10-03 18:46:10 -07:00
srat.c	[PATCH] convert i386 Summit subarch to use SRAT info for apicid_to_node calls	2006-09-29 09:18:03 -07:00
summit.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sys_i386.c	[PATCH] provide kernel_execve on all architectures	2006-10-02 07:57:23 -07:00
syscall_table.S	[PATCH] epoll_pwait()	2006-10-11 11:14:21 -07:00
sysenter.c	[PATCH] small fix for not releasing the mmap semaphore in i386/arch_setup_additional_pages	2006-06-28 12:05:50 -07:00
time_hpet.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
time.c	arch/i386/kernel/time: don't shadow 'irq' function arg	2006-10-06 13:32:44 -04:00
topology.c	[PATCH] i386: clean up topology.c	2006-09-26 10:52:35 +02:00
trampoline.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
traps.c	[PATCH] namespaces: utsname: use init_utsname when appropriate	2006-10-02 07:57:21 -07:00
tsc.c	[PATCH] i386: mark two more functions as __init	2006-09-26 10:52:35 +02:00
vm86.c	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
vmlinux.lds.S	[PATCH] x86: put .note.* sections into a PT_NOTE segment in vmlinux	2006-09-26 08:48:55 -07:00
vsyscall-int80.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
vsyscall-note.S	[PATCH] i386 vDSO: add PT_NOTE segment	2005-04-16 15:24:48 -07:00
vsyscall-sigreturn.S	[PATCH] Mark unwind info for signal trampolines in vDSOs	2006-03-31 12:18:52 -08:00
vsyscall-sysenter.S	[PATCH] vdso: randomize the i386 vDSO by moving it into a vma	2006-06-27 17:32:38 -07:00
vsyscall.lds.S	[PATCH] vDSO hash-style fix	2006-07-31 13:28:43 -07:00
vsyscall.S	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00