Rafael J. Wysocki cd59b4bed9 cpufreq: intel_pstate: Fix global settings in active mode ... Commit 111b8b3fe4 (cpufreq: intel_pstate: Always keep all limits settings in sync) changed intel_pstate to invoke cpufreq_update_policy() for every registered CPU on global sysfs attributes updates, but that led to undesirable effects in the active mode if the "performance" P-state selection algorithm is configufred for one CPU and the "powersave" one is chosen for all of the other CPUs. Namely, in that case, the following is possible: # cd /sys/devices/system/cpu/ # cat intel_pstate/max_perf_pct 100 # cat intel_pstate/min_perf_pct 26 # echo performance > cpufreq/policy0/scaling_governor # cat intel_pstate/max_perf_pct 100 # cat intel_pstate/min_perf_pct 100 # echo 94 > intel_pstate/min_perf_pct # cat intel_pstate/min_perf_pct 26 The reason why this happens is because intel_pstate attempts to maintain two sets of global limits in the active mode, one for the "performance" P-state selection algorithm and one for the "powersave" P-state selection algorithm, but the P-state selection algorithms are set per policy, so the global limits cannot reflect all of them at the same time if they are different for different policies. In the particular situation above, the attempt to change min_perf_pct to 94 caused cpufreq_update_policy() to be run for a CPU with the "powersave" P-state selection algorithm and intel_pstate_set_policy() called by it silently switched the global limits to the "powersave" set which finally was reflected by the sysfs interface. To prevent that from happening, modify intel_pstate_update_policies() to always switch back to the set of limits that was used right before it has been invoked. Fixes: 111b8b3fe4 (cpufreq: intel_pstate: Always keep all limits settings in sync) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2017-03-06 00:06:04 +01:00
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accessibility
acpi	ACPI: processor_perflib: Simplify code and stop using CPUFREQ_START	2017-02-04 00:05:29 +01:00
amba
android
ata	Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata	2016-12-13 15:30:50 -08:00
atm	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
auxdisplay	auxdisplay: fix new ht16k33 build errors	2017-01-11 09:27:30 +01:00
base	Merge OPP material for v4.11 to satisfy dependencies.	2017-02-09 22:52:35 +01:00
bcma	bcma: add Dell Inspiron 3148	2016-11-29 17:35:14 +02:00
block	xen-blkfront: correct maximum segment accounting	2017-01-23 13:27:42 -05:00
bluetooth	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-12-16 10:24:44 -08:00
bus	cpu/hotplug: Cleanup state names	2016-12-25 10:47:44 +01:00
cdrom	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
char	virtio_console: fix a crash in config_work_handler	2017-01-19 23:46:31 +02:00
clk	PM / OPP: Update OPP users to put reference	2017-01-30 09:22:21 +01:00
clocksource	clocksource/exynos_mct: Clear interrupt when cpu is shut down	2017-01-17 10:08:38 +01:00
connector
cpufreq	cpufreq: intel_pstate: Fix global settings in active mode	2017-03-06 00:06:04 +01:00
cpuidle	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2016-12-27 17:51:36 -08:00
dax	libnvdimm for 4.10	2016-12-18 15:49:10 -08:00
dca
devfreq	PM / OPP: Update OPP users to put reference	2017-01-30 09:22:21 +01:00
dio	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
dma	dmaengine: rcar-dmac: unmap slave resource when channel is freed	2017-01-13 12:14:28 +05:30
dma-buf
edac	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
eisa
extcon	extcon: return error code on failure	2017-01-11 09:11:39 +01:00
firewire
firmware	Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-01-15 10:54:39 -08:00
fmc
fpga	fpga: Clarify how write_init works streaming modes	2016-11-29 15:51:49 -06:00
gpio	gpio: provide lockdep keys for nested/unnested irqchips	2017-01-19 09:57:20 +01:00
gpu	drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj()	2017-01-29 13:50:06 -08:00
hid	HID: wacom: Fix sibling detection regression	2017-01-19 14:19:25 +01:00
hsi
hv	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
hwmon	hwmon: (lm90) fix temp1_max_alarm attribute	2017-01-02 10:15:28 -08:00
hwspinlock
hwtracing	coresight/etm3/4x: Consolidate hotplug state space	2016-12-25 10:47:44 +01:00
i2c	i2c: imx-lpi2c: add VLLS mode support	2017-01-26 00:24:23 +01:00
ide	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
idle	Power management material for v4.10-rc1	2016-12-13 10:41:53 -08:00
iio	First round of IIO fixes for the 4.10 cycle.	2017-01-02 16:59:44 +01:00
infiniband	RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled	2017-01-27 14:29:04 -05:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2017-01-13 11:49:34 -08:00
iommu	IOMMU Fixes for Linux v4.10-rc2	2017-01-06 10:49:36 -08:00
ipack
irqchip	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-25 14:30:04 -08:00
isdn	ISDN: eicon: silence misleading array-bounds warning	2017-01-27 11:27:34 -05:00
leds	cpu/hotplug: Cleanup state names	2016-12-25 10:47:44 +01:00
lguest	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
lightnvm	Char/Misc driver patches for 4.10-rc1	2016-12-13 12:11:01 -08:00
macintosh	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
mailbox	ktime: Cleanup ktime_set() usage	2016-12-25 17:21:22 +01:00
mcb
md	md/r5cache: disable write back for degraded array	2017-01-24 11:26:06 -08:00
media	media fixes for v4.10-rc6	2017-01-27 10:29:33 -08:00
memory	Fixes for drivers already queued to prevent	2016-11-30 14:58:00 +01:00
memstick	drivers/memstick/core/memstick.c: avoid -Wnonnull warning	2017-01-24 16:26:14 -08:00
message	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
mfd	- New Device Support	2016-12-19 08:16:26 -08:00
misc	mei: bus: enable OS version only for SPT and newer	2017-01-11 07:43:57 +01:00
mmc	mmc: dw_mmc: force setup bus if active slots exist	2017-01-23 10:19:30 +01:00
mtd	mtd: nand: lpc32xx: fix invalid error handling of a requested irq	2017-01-04 20:50:18 +01:00
net	net: phy: micrel: add support for KSZ8795	2017-01-27 11:10:50 -05:00
nfc
ntb	ntb_transport: Remove unnecessary call to ntb_peer_spad_read	2016-12-23 16:11:07 -05:00
nubus	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
nvdimm	libnvdimm, namespace: fix pmem namespace leak, delete when size set to zero	2017-01-13 09:50:33 -08:00
nvme	nvme-fc: use blk_rq_nr_phys_segments	2017-01-26 17:49:14 +02:00
nvmem	nvmem: fix nvmem_cell_read() return type doc	2017-01-04 18:22:47 +01:00
of	pci-v4.10-changes	2016-12-15 12:46:48 -08:00
oprofile	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
parisc	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
parport	parisc, parport_gsc: Fixes for printk continuation lines	2017-01-28 21:54:21 +01:00
pci	PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling	2017-01-17 08:41:51 -06:00
pcmcia	drivers/pcmcia/m32r_pcc.c: check return from add_pcc_socket	2016-12-12 18:55:06 -08:00
perf	cpu/hotplug: Cleanup state names	2016-12-25 10:47:44 +01:00
phy	SCSI misc on 20161213	2016-12-14 10:49:33 -08:00
pinctrl	pinctrl: uniphier: fix Ethernet (RMII) pin-mux setting for LD20	2017-01-19 10:36:40 +01:00
platform	platform/x86: ideapad-laptop: handle ACPI event 1	2017-01-22 12:47:06 +02:00
pnp	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
power	ktime: Cleanup ktime_set() usage	2016-12-25 17:21:22 +01:00
powercap	powercap / RAPL: Add Knights Mill CPUID	2016-11-30 23:41:33 +01:00
pps
ps3
ptp	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 19:56:15 -08:00
pwm	pwm: Changes for v4.10-rc1	2016-12-15 11:45:13 -08:00
rapidio
ras
regulator	- New Device Support	2016-12-19 08:16:26 -08:00
remoteproc	Revert "remoteproc: Merge table_ptr and cached_table pointers"	2016-12-30 03:26:31 -08:00
reset	ARM: SoC driver updates for v4.10	2016-12-15 16:03:25 -08:00
rpmsg	rpmsg: virtio_rpmsg_bus: fix channel creation	2016-12-30 03:12:11 -08:00
rtc	ktime: Cleanup ktime_set() usage	2016-12-25 17:21:22 +01:00
s390	virtio/s390: virtio: constify virtio_config_ops structures	2017-01-19 23:46:34 +02:00
sbus	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
scsi	Revert "sd: remove __data_len hack for WRITE SAME"	2017-01-26 10:01:20 -07:00
sfi
sh	lib: radix-tree: check accounting of existing slot replacement users	2016-12-12 18:55:08 -08:00
sn
soc	soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()	2017-01-12 13:37:49 -08:00
spi	spi: Fixes for v4.10	2017-01-20 12:25:11 -08:00
spmi
ssb
staging	staging: octeon: Call SET_NETDEV_DEV()	2017-01-03 17:11:50 +01:00
target	target: support XCOPY requests without parameters	2017-01-10 08:41:30 -08:00
tc
thermal	Merge OPP material for v4.11 to satisfy dependencies.	2017-02-09 22:52:35 +01:00
thunderbolt	Char/Misc driver patches for 4.10-rc1	2016-12-13 12:11:01 -08:00
tty	sysrq: attach sysrq handler correctly for 32-bit kernel	2017-01-11 09:22:54 +01:00
uio	uio-hv-generic: store physical addresses instead of virtual	2016-12-10 14:57:58 +01:00
usb	xhci: remove WARN_ON if dma mask is not set for platform devices	2017-01-20 14:55:20 +01:00
uwb
vfio	vfio/spapr: fail tce_iommu_attach_group() when iommu_data is null	2017-01-24 10:12:04 -07:00
vhost	vhost/vsock: handle vhost_vq_init_access() error	2017-01-25 00:33:10 +02:00
video	fbdev: color map copying bounds checking	2017-01-24 16:26:14 -08:00
virt
virtio	vring: Force use of DMA API for ARM-based systems with legacy devices	2017-01-25 00:33:11 +02:00
vlynq
vme	vme: Fix wrong pointer utilization in ca91cx42_slave_get	2017-01-11 10:42:16 +01:00
w1
watchdog	Watchdog updates for v4.10	2016-12-24 11:27:45 -08:00
xen	Merge branch 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2017-01-27 12:17:07 -08:00
zorro	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
Kconfig
Makefile