2fd547e8d1
* refs/heads/tmp-aa856bd Linux 4.4.115 spi: imx: do not access registers while clocks disabled serial: imx: Only wakeup via RTSDEN bit if the system has RTS/CTS selinux: general protection fault in sock_has_perm usb: uas: unconditionally bring back host after reset usb: f_fs: Prevent gadget unbind if it is already unbound USB: serial: simple: add Motorola Tetra driver usbip: list: don't list devices attached to vhci_hcd usbip: prevent bind loops on devices attached to vhci_hcd USB: serial: io_edgeport: fix possible sleep-in-atomic CDC-ACM: apply quirk for card reader USB: cdc-acm: Do not log urb submission errors on disconnect USB: serial: pl2303: new device id for Chilitag usb: option: Add support for FS040U modem staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID usb: gadget: don't dereference g until after it has been null checked media: usbtv: add a new usbid scsi: ufs: ufshcd: fix potential NULL pointer dereference in ufshcd_config_vreg scsi: aacraid: Prevent crash in case of free interrupt during scsi EH path xfs: ubsan fixes drm/omap: Fix error handling path in 'omap_dmm_probe()' kmemleak: add scheduling point to kmemleak_scan() SUNRPC: Allow connect to return EHOSTUNREACH quota: Check for register_shrinker() failure. net: ethernet: xilinx: Mark XILINX_LL_TEMAC broken on 64-bit hwmon: (pmbus) Use 64bit math for DIRECT format values lockd: fix "list_add double add" caused by legacy signal interface nfsd: check for use of the closed special stateid grace: replace BUG_ON by WARN_ONCE in exit_net hook nfsd: Ensure we check stateid validity in the seqid operation checks nfsd: CLOSE SHOULD return the invalid special stateid for NFSv4.x (x>0) xen-netfront: remove warning when unloading module KVM: VMX: Fix rflags cache during vCPU reset btrfs: fix deadlock when writing out space cache mac80211: fix the update of path metric for RANN frame openvswitch: fix the incorrect flow action alloc size drm/amdkfd: Fix SDMA oversubsription handling drm/amdkfd: Fix SDMA ring buffer size calculation drm/amdgpu: Fix SDMA load/unload sequence on HWS disabled mode bcache: check return value of register_shrinker cpufreq: Add Loongson machine dependencies ACPI / bus: Leave modalias empty for devices which are not present KVM: x86: ioapic: Preserve read-only values in the redirection table KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race KVM: X86: Fix operand/address-size during instruction decoding KVM: x86: Don't re-execute instruction when not passing CR2 value KVM: x86: emulator: Return to user-mode on L1 CPL=0 emulation failure igb: Free IRQs when device is hotplugged mtd: nand: denali_pci: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE gpio: ath79: add missing MODULE_DESCRIPTION/LICENSE gpio: iop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE power: reset: zx-reboot: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE crypto: af_alg - whitelist mask and type crypto: aesni - handle zero length dst buffer ALSA: seq: Make ioctls race-free kaiser: fix intel_bts perf crashes x86/pti: Make unpoison of pgd for trusted boot work for real bpf: reject stores into ctx via st and xadd bpf: fix 32-bit divide by zero bpf: fix divides by zero bpf: avoid false sharing of map refcount with max_entries bpf: arsh is not supported in 32 bit alu thus reject it bpf: introduce BPF_JIT_ALWAYS_ON config bpf: fix bpf_tail_call() x64 JIT x86: bpf_jit: small optimization in emit_bpf_tail_call() bpf: fix branch pruning logic loop: fix concurrent lo_open/lo_release ANDROID: sdcardfs: Protect set_top ANDROID: fsnotify: Notify lower fs of open Revert "ANDROID: sdcardfs: notify lower file of opens" ANDROID: sdcardfs: Use lower getattr times/size ANDROID: sched/rt: schedtune: Add boost retention to RT Conflicts: arch/x86/Kconfig kernel/sched/rt.c Change-Id: I91b08e1b8e0a1c6ca9c245597acad0bf197f9527 Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
376 lines
11 KiB
Text
376 lines
11 KiB
Text
menu "CPU Frequency scaling"
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config CPU_FREQ
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bool "CPU Frequency scaling"
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select SRCU
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help
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CPU Frequency scaling allows you to change the clock speed of
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CPUs on the fly. This is a nice method to save power, because
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the lower the CPU clock speed, the less power the CPU consumes.
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Note that this driver doesn't automatically change the CPU
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clock speed, you need to either enable a dynamic cpufreq governor
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(see below) after boot, or use a userspace tool.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say N.
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if CPU_FREQ
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config CPU_FREQ_GOV_COMMON
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bool
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config CPU_FREQ_BOOST_SW
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bool
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depends on THERMAL
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config CPU_FREQ_STAT
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tristate "CPU frequency translation statistics"
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default y
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help
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This driver exports CPU frequency statistics information through sysfs
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file system.
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To compile this driver as a module, choose M here: the
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module will be called cpufreq_stats.
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If in doubt, say N.
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config CPU_FREQ_STAT_DETAILS
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bool "CPU frequency translation statistics details"
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depends on CPU_FREQ_STAT
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help
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This will show detail CPU frequency translation table in sysfs file
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system.
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If in doubt, say N.
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choice
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prompt "Default CPUFreq governor"
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default CPU_FREQ_DEFAULT_GOV_USERSPACE if ARM_SA1100_CPUFREQ || ARM_SA1110_CPUFREQ
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default CPU_FREQ_DEFAULT_GOV_PERFORMANCE
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help
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This option sets which CPUFreq governor shall be loaded at
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startup. If in doubt, select 'performance'.
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config CPU_FREQ_DEFAULT_GOV_PERFORMANCE
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bool "performance"
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select CPU_FREQ_GOV_PERFORMANCE
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help
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Use the CPUFreq governor 'performance' as default. This sets
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the frequency statically to the highest frequency supported by
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the CPU.
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config CPU_FREQ_DEFAULT_GOV_POWERSAVE
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bool "powersave"
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select CPU_FREQ_GOV_POWERSAVE
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help
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Use the CPUFreq governor 'powersave' as default. This sets
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the frequency statically to the lowest frequency supported by
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the CPU.
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config CPU_FREQ_DEFAULT_GOV_USERSPACE
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bool "userspace"
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select CPU_FREQ_GOV_USERSPACE
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help
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Use the CPUFreq governor 'userspace' as default. This allows
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you to set the CPU frequency manually or when a userspace
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program shall be able to set the CPU dynamically without having
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to enable the userspace governor manually.
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config CPU_FREQ_DEFAULT_GOV_ONDEMAND
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bool "ondemand"
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select CPU_FREQ_GOV_ONDEMAND
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select CPU_FREQ_GOV_PERFORMANCE
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help
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Use the CPUFreq governor 'ondemand' as default. This allows
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you to get a full dynamic frequency capable system by simply
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loading your cpufreq low-level hardware driver.
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Be aware that not all cpufreq drivers support the ondemand
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governor. If unsure have a look at the help section of the
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driver. Fallback governor will be the performance governor.
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config CPU_FREQ_DEFAULT_GOV_CONSERVATIVE
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bool "conservative"
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select CPU_FREQ_GOV_CONSERVATIVE
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select CPU_FREQ_GOV_PERFORMANCE
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help
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Use the CPUFreq governor 'conservative' as default. This allows
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you to get a full dynamic frequency capable system by simply
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loading your cpufreq low-level hardware driver.
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Be aware that not all cpufreq drivers support the conservative
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governor. If unsure have a look at the help section of the
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driver. Fallback governor will be the performance governor.
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config CPU_FREQ_DEFAULT_GOV_INTERACTIVE
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bool "interactive"
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select CPU_FREQ_GOV_INTERACTIVE
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help
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Use the CPUFreq governor 'interactive' as default. This allows
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you to get a full dynamic cpu frequency capable system by simply
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loading your cpufreq low-level hardware driver, using the
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'interactive' governor for latency-sensitive workloads.
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config CPU_FREQ_DEFAULT_GOV_SCHED
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bool "sched"
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select CPU_FREQ_GOV_SCHED
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help
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Use the CPUfreq governor 'sched' as default. This scales
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cpu frequency using CPU utilization estimates from the
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scheduler.
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config CPU_FREQ_DEFAULT_GOV_SCHEDUTIL
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bool "schedutil"
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depends on SMP
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select CPU_FREQ_GOV_SCHEDUTIL
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select CPU_FREQ_GOV_PERFORMANCE
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help
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Use the 'schedutil' CPUFreq governor by default. If unsure,
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have a look at the help section of that governor. The fallback
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governor will be 'performance'.
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endchoice
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config CPU_FREQ_GOV_PERFORMANCE
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tristate "'performance' governor"
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help
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This cpufreq governor sets the frequency statically to the
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highest available CPU frequency.
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To compile this driver as a module, choose M here: the
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module will be called cpufreq_performance.
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If in doubt, say Y.
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config CPU_FREQ_GOV_POWERSAVE
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tristate "'powersave' governor"
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help
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This cpufreq governor sets the frequency statically to the
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lowest available CPU frequency.
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To compile this driver as a module, choose M here: the
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module will be called cpufreq_powersave.
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If in doubt, say Y.
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config CPU_FREQ_GOV_USERSPACE
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tristate "'userspace' governor for userspace frequency scaling"
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help
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Enable this cpufreq governor when you either want to set the
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CPU frequency manually or when a userspace program shall
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be able to set the CPU dynamically, like on LART
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<http://www.lartmaker.nl/>.
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To compile this driver as a module, choose M here: the
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module will be called cpufreq_userspace.
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For details, take a look at <file:Documentation/cpu-freq/>.
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If in doubt, say Y.
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config CPU_FREQ_GOV_ONDEMAND
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tristate "'ondemand' cpufreq policy governor"
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select CPU_FREQ_GOV_COMMON
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help
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'ondemand' - This driver adds a dynamic cpufreq policy governor.
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The governor does a periodic polling and
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changes frequency based on the CPU utilization.
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The support for this governor depends on CPU capability to
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do fast frequency switching (i.e, very low latency frequency
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transitions).
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To compile this driver as a module, choose M here: the
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module will be called cpufreq_ondemand.
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For details, take a look at linux/Documentation/cpu-freq.
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If in doubt, say N.
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config CPU_FREQ_GOV_INTERACTIVE
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bool "'interactive' cpufreq policy governor"
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help
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'interactive' - This driver adds a dynamic cpufreq policy governor
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designed for latency-sensitive workloads.
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This governor attempts to reduce the latency of clock
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increases so that the system is more responsive to
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interactive workloads.
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For details, take a look at linux/Documentation/cpu-freq.
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If in doubt, say N.
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config CPU_FREQ_GOV_CONSERVATIVE
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tristate "'conservative' cpufreq governor"
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depends on CPU_FREQ
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select CPU_FREQ_GOV_COMMON
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help
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'conservative' - this driver is rather similar to the 'ondemand'
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governor both in its source code and its purpose, the difference is
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its optimisation for better suitability in a battery powered
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environment. The frequency is gracefully increased and decreased
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rather than jumping to 100% when speed is required.
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If you have a desktop machine then you should really be considering
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the 'ondemand' governor instead, however if you are using a laptop,
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PDA or even an AMD64 based computer (due to the unacceptable
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step-by-step latency issues between the minimum and maximum frequency
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transitions in the CPU) you will probably want to use this governor.
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To compile this driver as a module, choose M here: the
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module will be called cpufreq_conservative.
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For details, take a look at linux/Documentation/cpu-freq.
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If in doubt, say N.
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config CPU_BOOST
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tristate "Event base short term CPU freq boost"
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depends on CPU_FREQ
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help
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This driver boosts the frequency of one or more CPUs based on
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various events that might occur in the system. As of now, the
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events it reacts to are:
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- Migration of important threads from one CPU to another.
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If in doubt, say N.
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config CPU_FREQ_GOV_SCHEDUTIL
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bool "'schedutil' cpufreq policy governor"
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depends on CPU_FREQ && SMP
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select CPU_FREQ_GOV_ATTR_SET
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select IRQ_WORK
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help
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This governor makes decisions based on the utilization data provided
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by the scheduler. It sets the CPU frequency to be proportional to
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the utilization/capacity ratio coming from the scheduler. If the
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utilization is frequency-invariant, the new frequency is also
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proportional to the maximum available frequency. If that is not the
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case, it is proportional to the current frequency of the CPU. The
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frequency tipping point is at utilization/capacity equal to 80% in
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both cases.
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If in doubt, say N.
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comment "CPU frequency scaling drivers"
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config CPUFREQ_DT
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tristate "Generic DT based cpufreq driver"
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depends on HAVE_CLK && OF
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# if CPU_THERMAL is on and THERMAL=m, CPUFREQ_DT cannot be =y:
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depends on !CPU_THERMAL || THERMAL
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select PM_OPP
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help
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This adds a generic DT based cpufreq driver for frequency management.
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It supports both uniprocessor (UP) and symmetric multiprocessor (SMP)
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systems which share clock and voltage across all CPUs.
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If in doubt, say N.
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if X86
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source "drivers/cpufreq/Kconfig.x86"
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endif
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if ARM || ARM64
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source "drivers/cpufreq/Kconfig.arm"
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endif
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if PPC32 || PPC64
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source "drivers/cpufreq/Kconfig.powerpc"
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endif
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if AVR32
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config AVR32_AT32AP_CPUFREQ
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bool "CPU frequency driver for AT32AP"
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depends on PLATFORM_AT32AP
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default n
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help
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This enables the CPU frequency driver for AT32AP processors.
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If in doubt, say N.
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endif
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if IA64
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config IA64_ACPI_CPUFREQ
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tristate "ACPI Processor P-States driver"
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depends on ACPI_PROCESSOR
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help
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This driver adds a CPUFreq driver which utilizes the ACPI
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Processor Performance States.
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For details, take a look at <file:Documentation/cpu-freq/>.
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If in doubt, say N.
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endif
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if MIPS
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config LOONGSON2_CPUFREQ
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tristate "Loongson2 CPUFreq Driver"
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depends on LEMOTE_MACH2F
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help
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This option adds a CPUFreq driver for loongson processors which
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support software configurable cpu frequency.
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Loongson2F and it's successors support this feature.
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For details, take a look at <file:Documentation/cpu-freq/>.
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If in doubt, say N.
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config LOONGSON1_CPUFREQ
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tristate "Loongson1 CPUFreq Driver"
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depends on LOONGSON1_LS1B
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help
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This option adds a CPUFreq driver for loongson1 processors which
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support software configurable cpu frequency.
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For details, take a look at <file:Documentation/cpu-freq/>.
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If in doubt, say N.
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endif
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if SPARC64
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config SPARC_US3_CPUFREQ
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tristate "UltraSPARC-III CPU Frequency driver"
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help
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This adds the CPUFreq driver for UltraSPARC-III processors.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say N.
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config SPARC_US2E_CPUFREQ
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tristate "UltraSPARC-IIe CPU Frequency driver"
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help
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This adds the CPUFreq driver for UltraSPARC-IIe processors.
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For details, take a look at <file:Documentation/cpu-freq>.
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If in doubt, say N.
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endif
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if SUPERH
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config SH_CPU_FREQ
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tristate "SuperH CPU Frequency driver"
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help
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This adds the cpufreq driver for SuperH. Any CPU that supports
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clock rate rounding through the clock framework can use this
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driver. While it will make the kernel slightly larger, this is
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harmless for CPUs that don't support rate rounding. The driver
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will also generate a notice in the boot log before disabling
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itself if the CPU in question is not capable of rate rounding.
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For details, take a look at <file:Documentation/cpu-freq>.
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If unsure, say N.
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endif
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config QORIQ_CPUFREQ
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tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
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depends on OF && COMMON_CLK && (PPC_E500MC || ARM)
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select CLK_QORIQ
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help
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This adds the CPUFreq driver support for Freescale QorIQ SoCs
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which are capable of changing the CPU's frequency dynamically.
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endif
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endmenu
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