OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
linux/drivers
History
Thomas Gleixner 7177a581fe tick/powerclamp: Remove tick_nohz_idle abuse 
commit a5fd9733a3 upstream.

commit 4dbd27711c "tick: export nohz tick idle symbols for module
use" was merged via the thermal tree without an explicit ack from the
relevant maintainers.

The exports are abused by the intel powerclamp driver which implements
a fake idle state from a sched FIFO task. This causes all kinds of
wreckage in the NOHZ core code which rightfully assumes that
tick_nohz_idle_enter/exit() are only called from the idle task itself.

Recent changes in the NOHZ core lead to a failure of the powerclamp
driver and now people try to hack completely broken and backwards
workarounds into the NOHZ core code. This is completely unacceptable
and just papers over the real problem. There are way more subtle
issues lurking around the corner.

The real solution is to fix the powerclamp driver by rewriting it with
a sane concept, but that's beyond the scope of this.

So the only solution for now is to remove the calls into the core NOHZ
code from the powerclamp trainwreck along with the exports.

Fixes: d6d71ee4a1 "PM: Introduce Intel PowerClamp Driver"
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Pan Jacob jun <jacob.jun.pan@intel.com>
Cc: LKP <lkp@01.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1412181110110.17382@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2015-01-27 08:18:55 -08:00
..
accessibility
…
acpi ACPI / PM: Fix PM initialization for devices that are not present 2015-01-16 06:59:34 -08:00
amba
…
ata sata_fsl: fix error handling of irq_of_parse_and_map 2014-12-16 09:34:27 -08:00
atm
…
auxdisplay
…
base driver core: Fix unbalanced device reference in drivers_probe 2015-01-16 06:59:31 -08:00
bcma Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
block zram: avoid kunmap_atomic() of a NULL pointer 2014-11-21 09:23:00 -08:00
bluetooth Bluetooth: Fix issue with USB suspend in btusb driver 2014-10-30 09:38:23 -07:00
bus bus: mvebu-mbus: allow several windows with the same target/attribute 2014-06-07 10:28:22 -07:00
cdrom Merge branch 'for-3.14/drivers' of git://git.kernel.dk/linux-block 2014-01-30 11:40:10 -08:00
char hwrng: pseries - port to new read API and fix stack corruption 2014-11-21 09:23:01 -08:00
clk clk: qcom: mdp_lut_clk is a child of mdp_src 2014-10-05 14:52:24 -07:00
clocksource clockevent: sun4i: Fix race condition in the probe code 2014-12-06 15:55:34 -08:00
connector net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-06-26 15:15:38 -04:00
cpufreq intel_pstate: Correct BYT VID values. 2014-11-14 09:00:01 -08:00
cpuidle powerpc/powernv/cpuidle: Back-end cpuidle driver for powernv platform. 2014-01-29 17:02:24 +11:00
crypto crypto: caam - remove duplicated sg copy functions 2014-11-21 09:23:01 -08:00
dca
…
devfreq Merge branches 'pm-cpufreq' and 'pm-devfreq' 2014-01-29 11:48:23 +01:00
dio
…
dma dmaengine: dw: don't perform DMA when dmaengine_submit is called 2014-10-05 14:52:24 -07:00
edac cpc925_edac: Report UE events properly 2014-11-14 09:00:09 -08:00
eisa Revert "EISA: Initialize device before its resources" 2014-01-17 14:57:29 -07:00
extcon extcon: max14577: Properly handle regmap_irq_get_virq error 2014-06-30 20:11:52 -07:00
firewire firewire: cdev: prevent kernel stack leaking into ioctl arguments 2014-11-21 09:23:02 -08:00
firmware firmware: Do not use WARN_ON(!spin_is_locked()) 2014-09-17 09:19:08 -07:00
fmc drivers/fmc/fmc-write-eeprom.c: fix decimal permissions 2014-02-25 15:25:43 -08:00
gpio gpio: mcp23s08: Bug fix of SPI device tree registration. 2014-06-11 11:54:14 -07:00
gpu drm/i915: Force the CS stall for invalidate flushes 2015-01-27 08:18:54 -08:00
hid HID: Add a new id 0x501a for Genius MousePen i608X 2015-01-16 06:59:31 -08:00
hsi
…
hv Drivers: hv: vmbus: Fix a race condition when unregistering a device 2015-01-16 06:59:32 -08:00
hwmon hwmon: (ds1621) Update zbits after conversion rate change 2014-10-05 14:52:19 -07:00
hwspinlock
…
i2c i2c: davinci: generate STP always when NACK is received 2014-12-16 09:34:26 -08:00
ide drivers: ide: Include appropriate header file in ide-pio-blacklist.c 2014-01-28 23:35:09 -08:00
idle ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
iio iio: st_sensors: Fix buffer copy 2014-11-14 09:00:01 -08:00
infiniband iser-target: Disable TX completion interrupt coalescing 2014-12-06 15:55:38 -08:00
input Input: xpad - use proper endpoint type 2014-12-06 15:55:37 -08:00
iommu iommu/vt-d: Fix an off-by-one bug in __domain_mapping() 2015-01-16 06:59:31 -08:00
ipack
…
irqchip irqchip: gic: Fix core ID calculation when topology is read from DT 2014-07-28 08:06:02 -07:00
isdn isdnloop: several buffer overflows 2014-04-14 06:50:04 -07:00
leds leds: leds-pwm: properly clean up after probe failure 2014-06-07 10:28:18 -07:00
lguest
…
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-01-27 21:11:26 -08:00
mailbox drivers/mailbox/omap: make mbox->irq signed for error handling 2014-01-23 16:36:53 -08:00
md dm thin: fix missing out-of-data-space to write mode transition if blocks are released 2015-01-08 10:00:49 -08:00
media media: smiapp: Only some selection targets are settable 2014-12-16 09:34:26 -08:00
memory memory: mvebu-devbus: fix the conversion of the bus width 2014-06-07 10:28:22 -07:00
memstick drivers/memstick/host/rtsx_pci_ms.c: fix ms card data transfer bug 2014-01-23 16:37:04 -08:00
message mptfusion: enable no_write_same for vmware scsi disks 2014-10-30 09:38:20 -07:00
mfd mfd: tc6393xb: Fail ohci suspend if full state restore is required 2015-01-08 10:00:48 -08:00
misc misc: genwqe: check for error from get_user_pages_fast() 2015-01-16 06:59:31 -08:00
mmc mmc: sdhci: Fix sleep in atomic after inserting SD card 2015-01-16 06:59:34 -08:00
mtd mtd: tests: abort torturetest on erase errors 2015-01-16 06:59:33 -08:00
net enic: fix rx skb checksum 2015-01-27 08:18:53 -08:00
nfc NFC: microread: Potential overflows in microread_target_discovered() 2014-10-05 14:52:18 -07:00
ntb
…
nubus
…
of of/base: Fix PowerPC address parsing hack 2014-12-06 15:55:35 -08:00
oprofile
…
parisc
…
parport parport: fix menu breakage 2014-07-31 12:52:56 -07:00
pci PCI: Restore detection of read-only BARs 2015-01-16 06:59:30 -08:00
pcmcia PCI changes for the v3.14 merge window: 2014-01-22 16:39:28 -08:00
phy usb: phy: twl4030-usb: Fix regressions to runtime PM on omaps 2014-10-05 14:52:14 -07:00
pinctrl pinctrl: baytrail: show output gpio state correctly on Intel Baytrail 2014-11-14 09:00:12 -08:00
platform hp_accel: Add support for HP ZBook 15 2015-01-27 08:18:55 -08:00
pnp ACPI / PNP: Fix acpi_pnp_match() 2014-08-07 14:52:37 -07:00
power power: bq2415x_charger: Fix memory leak on DTS parsing error 2014-11-21 09:23:03 -08:00
powercap
…
pps
…
ps3
…
ptp ptp_pch: Add dependency on HAS_IOMEM 2014-01-15 14:51:22 -08:00
pwm pwm: lp3943: Fix potential memory leak during request 2014-02-26 15:45:12 +01:00
rapidio rapidio/tsi721_dma: fix failure to obtain transaction descriptor 2014-08-07 14:52:37 -07:00
regulator regulator: max77693: Fix use of uninitialized regulator config 2014-11-14 09:00:13 -08:00
remoteproc
…
reset
…
rpmsg
…
rtc drivers/rtc/rtc-isl12057.c: fix masking of register values 2015-01-16 06:59:29 -08:00
s390 s390/chsc: fix SEI usage on old FW levels 2014-05-13 13:32:49 +02:00
sbus bbc-i2c: Fix BBC I2C envctrl on SunBlade 2000 2014-08-14 09:38:26 +08:00
scsi scsi: correct return values for .eh_abort_handler implementations 2015-01-08 10:00:48 -08:00
sfi
…
sh
…
sn
…
spi spi: fsl: Fix problem with multi message transfers 2015-01-16 06:59:34 -08:00
ssb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
staging staging: r8188eu: Add new device ID for DLink GO-USB-N150 2014-12-06 15:55:36 -08:00
target target: Don't call TFO->write_pending if data_length == 0 2014-12-06 15:55:38 -08:00
tc
…
thermal tick/powerclamp: Remove tick_nohz_idle abuse 2015-01-27 08:18:55 -08:00
tty n_tty: Fix read_buf race condition, increment read_head after pushing data 2015-01-16 06:59:32 -08:00
uio
…
usb cdc-acm: memory leak in error case 2015-01-16 06:59:32 -08:00
uwb uwb: init beacon cache entry before registering uwb device 2014-10-05 14:52:14 -07:00
vfio mm: close PageTail race 2014-03-04 07:55:47 -08:00
vhost vhost-scsi: Take configfs group dependency during VHOST_SCSI_SET_ENDPOINT 2014-12-06 15:55:38 -08:00
video framebuffer: fix border color 2014-11-14 08:59:52 -08:00
virt
…
virtio virtio_pci: fix virtio spec compliance on restore 2014-11-14 08:59:50 -08:00
vlynq drivers/vlynq/vlynq.c: fix another resource size off by 1 error 2014-01-23 16:36:55 -08:00
vme VME: Correct read/write alignment algorithm 2014-02-07 08:16:14 -08:00
w1 w1: fix w1_send_slave dropping a slave id 2014-05-06 07:59:26 -07:00
watchdog watchdog: kempld-wdt: Use the correct value when configuring the prescaler with the watchdog 2014-07-06 18:57:27 -07:00
xen swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single 2015-01-16 06:59:29 -08:00
zorro
…
Kconfig
…
Makefile
…