Mikulas Patocka e20e1d0ac0 powernow-k6: disable cache when changing frequency ... I found out that a system with k6-3+ processor is unstable during network server load. The system locks up or the network card stops receiving. The reason for the instability is the CPU frequency scaling. During frequency transition the processor is in "EPM Stop Grant" state. The documentation says that the processor doesn't respond to inquiry requests in this state. Consequently, coherency of processor caches and bus master devices is not maintained, causing the system instability. This patch flushes the cache during frequency transition. It fixes the instability. Other minor changes: * u64 invalue changed to unsigned long because the variable is 32-bit * move the logic to set the multiplier to a separate function powernow_k6_set_cpu_multiplier * preserve lower 5 bits of the powernow port instead of 4 (the voltage field has 5 bits) * mask interrupts when reading the multiplier, so that the port is not open during other activity (running other kernel code with the port open shouldn't cause any misbehavior, but we should better be safe and keep the port closed) This patch should be backported to all stable kernels. If it doesn't apply cleanly, change it, or ask me to change it. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2014-01-06 15:52:11 +01:00
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accessibility	…
acpi	Merge branch 'acpica'	2013-11-27 01:03:27 +01:00
amba	…
ata	SCSI fixes on 20131206	2013-12-06 08:30:18 -08:00
atm	atm: idt77252: fix dev refcnt leak	2013-11-19 15:53:02 -05:00
auxdisplay	…
base	Revert "cpufreq: suspend governors on system suspend/hibernate"	2013-12-08 01:04:17 +01:00
bcma	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2013-11-13 17:40:34 +09:00
block	null_blk: mem garbage on NUMA systems during init	2013-12-15 12:17:16 -08:00
bluetooth	…
bus	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2013-11-14 08:51:29 +09:00
cdrom	…
char	Char/Misc driver fixes for 3.13-rc3	2013-12-08 18:47:25 -08:00
clk	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-11-15 16:47:22 -08:00
clocksource	clocksource: arm_arch_timer: Hide eventstream Kconfig on non-ARM	2013-11-21 00:06:52 +01:00
connector	connector: improved unaligned access error fix	2013-11-14 17:19:20 -05:00
cpufreq	powernow-k6: disable cache when changing frequency	2014-01-06 15:52:11 +01:00
cpuidle	cpuidle: Check for dev before deregistering it.	2013-12-03 22:05:22 +01:00
crypto	crypto: talitos - fix aead sglen for case 'dst != src'	2013-11-28 22:25:17 +08:00
dca	…
devfreq	Merge branch 'pm-devfreq'	2013-11-07 19:24:20 +01:00
dio	…
dma	dma: fix build breakage in s3c24xx-dma	2013-12-04 11:24:30 +05:30
edac	sb_edac: Shut up compiler warning when EDAC_DEBUG is enabled	2013-11-30 12:26:36 +01:00
eisa	…
extcon	extcon: remove freed groups caused the panic or warning in unregister flow	2013-11-26 15:17:23 +09:00
firewire	[SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers	2013-11-29 08:48:39 +04:00
firmware	efi-pstore: Make efi-pstore return a unique id	2013-11-29 10:11:06 +00:00
fmc	…
gpio	A rather big fix for a regression where we have dropped omap4 hwmod	2013-12-09 15:38:41 -08:00
gpu	radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()	2013-12-15 12:16:00 -08:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2013-12-13 13:21:28 -08:00
hsi	…
hv	…
hwmon	hwmon fixes for 3.13-rc4	2013-12-12 11:05:19 -08:00
hwspinlock	…
i2c	i2c: imx: Check the return value from clk_prepare_enable()	2013-12-12 22:48:22 +01:00
ide	More ACPI and power management updates for 3.13-rc1	2013-11-20 13:25:04 -08:00
idle	intel_idle: Fixed C6 state on Avoton/Rangeley processors	2013-11-28 14:35:26 +01:00
iio	Fix build failure for gp2ap020a00f.c	2013-12-02 21:11:30 +00:00
infiniband	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
input	Input: adxl34x - Fix bug in definition of ADXL346_2D_ORIENT	2013-12-09 22:23:31 -08:00
iommu	iommu/arm-smmu: fix error return code in arm_smmu_device_dt_probe()	2013-12-06 16:44:25 +00:00
ipack	…
irqchip	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-12-02 10:15:39 -08:00
isdn	net: rework recvmsg handler msg_name and msg_namelen logic	2013-11-20 21:52:30 -05:00
leds	leds: pwm: Fix for deferred probe in DT booted mode	2013-12-02 11:53:17 -08:00
lguest	…
macintosh	powerpc/windfarm: Fix XServe G5 fan control Makefile issue	2013-11-27 11:35:47 +11:00
mailbox	…
md	A set of device-mapper fixes for 3.13.	2013-12-13 13:22:22 -08:00
media	[media] videobuf2-dma-sg: fix possible memory leak	2013-12-10 05:40:57 -02:00
memory	…
memstick	tree-wide: use reinit_completion instead of INIT_COMPLETION	2013-11-15 09:32:21 +09:00
message	drivers/message/i2o/driver.c: add missing destroy_workqueue() on error in i2o_driver_register()	2013-11-13 12:09:26 +09:00
mfd	mfd/rtc: s5m: fix register updating by adding regmap for RTC	2013-12-12 18:19:26 -08:00
misc	Char/Misc driver fixes for 3.13-rc3	2013-12-08 18:47:25 -08:00
mmc	mmc: omap: Fix I2C dependency and make driver usable with device tree	2013-11-26 15:51:16 -08:00
mtd	mtd: nand: pxa3xx: Use info->use_dma to release DMA resources	2013-12-12 15:02:04 -08:00
net	igb: Fix for issue where values could be too high for udelay function.	2013-12-14 22:59:42 -05:00
nfc	…
ntb	NTB driver bug fixes to address a missed call to pci_enable_msix,	2013-11-26 11:15:12 -08:00
nubus	…
of	Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm	2013-11-14 07:55:21 +09:00
oprofile	…
parisc	…
parport	Kconfig cleanups for v3.13	2013-11-15 14:05:15 -08:00
pci	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-12-15 11:56:47 -08:00
pcmcia	DeviceTree updates for 3.13. This is a bit larger pull request than	2013-11-12 16:52:17 +09:00
phy	…
pinctrl	sh-pfc: sh7372: Fix pin bias setup	2013-12-03 10:38:41 +01:00
platform	sony-laptop: do not scribble keyboard backlight registers on resume	2013-11-26 13:03:36 +09:00
pnp	PNP: fix restoring devices after hibernation	2013-12-05 02:01:55 +01:00
power	Highlights:	2013-11-18 15:35:09 -08:00
powercap	PowerCap: Fix mode for energy counter	2013-12-05 02:05:48 +01:00
pps	drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptr	2013-11-13 12:09:35 +09:00
ps3	…
ptp	…
pwm	…
rapidio	…
regulator	regulator: Fixes for v3.13	2013-12-13 11:39:54 -08:00
remoteproc	…
reset	…
rpmsg	…
rtc	mfd/rtc: s5m: fix register updating by adding regmap for RTC	2013-12-12 18:19:26 -08:00
s390	s390/sclp: replace uninitialized early_event_mask_sccb variable with sccb_early	2013-12-02 15:31:07 +01:00
sbus	…
scsi	SCSI fixes on 20131206	2013-12-06 08:30:18 -08:00
sfi	…
sh	…
sn	…
spi	Merge remote-tracking branches 'spi/fix/bcm2835', 'spi/fix/bcm63xx', 'spi/fix/mpc512x-psc', 'spi/fix/mxs', 'spi/fix/pxa2xx', 'spi/fix/qspi', 'spi/fix/rspi' and 'spi/fix/txx9' into spi-linus	2013-11-28 11:31:35 +00:00
ssb	…
staging	Staging: TIDSPBRIDGE: Use vm_iomap_memory for mmap-ing instead of remap_pfn_range	2013-12-03 09:42:45 -08:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
tc	…
thermal	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-11-19 15:50:47 -08:00
tty	n_tty: Fix missing newline echo	2013-11-29 12:53:19 -08:00
uio	uio: we cannot mmap unaligned page contents	2013-12-02 11:50:37 -08:00
usb	usb: hub: Use correct reset for wedged USB3 devices that are NOTATTACHED	2013-12-04 17:00:43 -08:00
uwb	…
vfio	…
vhost	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
video	Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-12-09 19:21:39 -08:00
virt	…
virtio	Nothing really exciting: some groundwork for changing virtio endian, and	2013-11-15 13:28:47 +09:00
vlynq	…
vme	…
w1	drivers/w1/masters/w1-gpio.c: use dev_get_platdata()	2013-11-15 09:32:21 +09:00
watchdog	sc1200_wdt: Fix oops	2013-12-10 08:48:15 +01:00
xen	Bug-fixes:	2013-12-02 10:12:01 -08:00
zorro	…
Kconfig	ACPI and power management updates for 3.13-rc1	2013-11-14 13:41:48 +09:00
Makefile	ACPI and power management updates for 3.13-rc1	2013-11-14 13:41:48 +09:00