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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boot	[PATCH] Some config.h removals	2006-10-01 00:39:34 -07:00
crypto	[CRYPTO] api: Get rid of flags argument to setkey	2006-09-21 11:41:02 +10:00
kernel	[CPUFREQ][8/8] acpi-cpufreq: Add support for freq feedback from hardware	2006-10-15 19:57:11 -04:00
lib	[PATCH] kernel-doc: fix function name in usercopy.c	2006-10-11 11:14:24 -07:00
mach-default	[PATCH] irq-flags: i386: Use the new IRQF_ constants	2006-07-02 13:58:47 -07:00
mach-es7000	[PATCH] Compilation fix for ES7000 when no ACPI is specified in config (i386)	2006-03-23 07:38:04 -08:00
mach-generic	[PATCH] i386: Replace i386 open-coded cmdline parsing with	2006-09-26 10:52:32 +02:00
mach-visws	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
mach-voyager	[VOYAGER] fix up ptregs removal mess	2006-10-12 22:25:03 -05:00
math-emu	[PATCH] i386: inline assembler: cleanup and encapsulate descriptor and task register management	2005-09-05 00:06:11 -07:00
mm	[PATCH] mm: use symbolic names instead of indices for zone initialisation	2006-10-11 11:14:14 -07:00
oprofile	[PATCH] oprofile: ppro: need to enable/disable all the counters	2006-09-29 09:18:11 -07:00
pci	[PATCH] i386/x86_64: FIX pci_enable_irq to set dev->irq to the irq number	2006-10-08 12:24:02 -07:00
power	[PATCH] Change the name of pagedir_nosave	2006-09-26 08:49:01 -07:00
defconfig	[PATCH] i386: Update defconfig	2006-10-05 18:47:21 +02:00
Kconfig	Attack of "the the"s in arch	2006-10-03 22:21:02 +02:00
Kconfig.cpu	[PATCH] uml: fix processor selection to exclude unsupported processors and features	2006-10-11 11:14:20 -07:00
Kconfig.debug	[PATCH] lockdep: irqtrace subsystem, i386 support	2006-07-03 15:27:03 -07:00
Makefile	[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder	2006-09-26 10:52:41 +02:00
Makefile.cpu	[PATCH] x86-64: Use -mtune=generic for generic kernels	2006-03-25 09:10:52 -08:00