With Intel® Turbo Boost Max Technology 3.0 (ITMT), single-threaded performance is optimized by identifying processor's fastest core and running critical workloads on it. Refere to: http://www.intel.com/content/www/us/en/architecture-and-technology/turbo-boost/turbo-boost-max-technology.html This patchset consist of all changes required to support ITMT feature: - Enhance CPPC ACPI lib to support x86 - Use CPPC information in Intel P-State driver to get performance information - Scheduler enhancements By default this feature is OFF, to turn on: # echo 1 > /proc/sys/kernel/sched_itmt_enabled Srinivas Pandruvada (7): acpi: cppc: Allow build with ACPI_CPU_FREQ_PSS config acpi: cpcc: Add integer read support acpi: cppc: Add support for function fixed hardware address acpi: cppc: Add prefix cppc to cpudata structure name acpi: bus: Enable HWP CPPC objects acpi: bus: Set _OSC for diverse core support cpufreq: intel_pstate: Use CPPC to get max performance Tim Chen (4): sched, cpuset: Add regenerate_sched_domains function to rebuild all sched domains sched, x86: Add SD_ASYM_PACKING flags to x86 cpu topology for cpus supporting Intel Turbo Boost Max Technology sched: Extend scheduler's asym packing sched,x86: Enable Turbo Boost Max Technology arch/x86/Kconfig | 9 +++ arch/x86/include/asm/topology.h | 26 +++++++ arch/x86/kernel/Makefile | 1 + arch/x86/kernel/itmt.c | 147 ++++++++++++++++++++++++++++++++++++++++ arch/x86/kernel/smpboot.c | 77 ++++++++++++++++----- drivers/acpi/Kconfig | 1 - drivers/acpi/bus.c | 9 +++ drivers/acpi/cppc_acpi.c | 88 ++++++++++++++++++++---- drivers/acpi/processor_driver.c | 5 +- drivers/cpufreq/Kconfig.x86 | 1 + drivers/cpufreq/cppc_cpufreq.c | 14 ++-- drivers/cpufreq/intel_pstate.c | 75 +++++++++++++++++++- include/acpi/cppc_acpi.h | 4 +- include/linux/acpi.h | 1 + include/linux/cpuset.h | 2 + include/linux/sched.h | 3 + kernel/cpuset.c | 32 +++++++-- kernel/sched/core.c | 46 ++++++++++++- kernel/sched/fair.c | 25 ++++--- kernel/sched/sched.h | 17 +++++ 20 files changed, 517 insertions(+), 66 deletions(-) create mode 100644 arch/x86/kernel/itmt.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
