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Add a dsb after the isb to ensure that the previous writes to the
CP15 registers take effect before we enable the MMU.
Signed-off-by: Russell King <[email protected]>
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ARM920 and ARM926 save four registers, not three. Fix the size of
the suspend region required.
Signed-off-by: Russell King <[email protected]>
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r1 stores the v:p offset from the CPU invariant resume code, and is
expected to be preserved by the CPU specific code. Overwriting it is
not a good idea.
We've managed to get away with it on sa1100 platforms because most
happen to have PHYS_OFFSET == PAGE_OFFSET, but that may not be the
case depending on kernel configuration. So fix this latent bug.
This fixes xsc3 as well which was saving and restoring this register
independently.
Signed-off-by: Russell King <[email protected]>
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cpu_v7_reset disables the MMU and then branches to the provided address.
On Thumb-2 kernels, we should take care to clear the Thumb Exception
enable bit in the System Control Register, otherwise this may wreak
havok in the code to which we are branching (for example, an ARM kernel
image via kexec).
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Russell King <[email protected]>
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Commit 540b5738 ("ARM: 6999/1: head, zImage: Always Enter the kernel in
ARM state") mandates that the kernel should be entered in ARM state.
If a Thumb-2 kernel kexecs a new kernel image, we need to ensure that
we change state when branching to the new code. This patch replaces a
mov pc, lr with a bx lr on Thumb-2 kernels so that we transition to ARM
state if need be.
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Signed-off-by: Russell King <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: sbp2: fix panic after rmmod with slow targets
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This patch updates the recently submitted
"Associate the HDMI clock together with LCDC1 on sh7372"
to V2 with the following change:
- Use lcdc1_device on AP4EVB to build properly.
Signed-off-by: Magnus Damm <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
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The nfsservctl system call is now gone, so we should remove all
linkage for it.
Signed-off-by: NeilBrown <[email protected]>
Signed-off-by: J. Bruce Fields <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
drm/i915: Fix wrong initializer for "locked" variable in assert_panel_unlocked
i915: do not setup intel_backlight twice
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (30 commits)
USB: ftdi_sio: add Calao reference board support
USB option driver K3765/K4505 avoid CDC_DATA interface
USB: option: add YUGA device id to driver
usb: s5p-ehci: fix a NULL pointer deference
USB: EHCI: Do not rely on PORT_SUSPEND to stop USB resuming in ehci_bus_resume().
USB option driver add PID of Huawei Vodafone K4605
USB option driver add PID of Huawei Vodafone K3806
xhci: Handle zero-length isochronous packets.
USB: Avoid NULL pointer deref in usb_hcd_alloc_bandwidth.
usb: musb: gadget: fix error path
usb: gadget: f_phonet: unlock in error case
usb: musb: blackfin: include prefetch head file
usb: musb: tusb6010: fix compilation
usb: gadget: renesas_usbhs: fix DMA build by including dma-mapping.h
usb: musb: cppi: fix build errors due to DBG and missing musb variable
usb: musb: ux500: replace missing DBG with dev_dbg
usb: musb: ux500: set dma config for both src and dst
usb: musb: fix oops on musb_gadget_pullup
usb: host: ehci-omap: fix .remove and failure handling path of .probe(v1)
usb: gadget: hid: don't STALL when processing a HID Descriptor request
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
omap-serial: Allow IXON and IXOFF to be disabled.
TTY: serial, document ignoring of uart->ops->startup error
TTY: pty, fix pty counting
8250: Fix race condition in serial8250_backup_timeout().
serial/8250_pci: delete duplicate data definition
8250_pci: add support for Rosewill RC-305 4x serial port card
tty: Add "spi:" prefix for spi modalias
atmel_serial: fix atmel_default_console_device
serial: 8250_pnp: add Intermec CV60 touchscreen device
drivers/serial/ucc_uart.c: Fix compiler warning
pch_uart: Set PCIe bus number using probe parameter
serial: samsung: Fix build error
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
drivers:misc: ti-st: fix unexpected UART close
drivers:misc: ti-st: free skb on firmware download
drivers:misc: ti-st: wait for completion at fail
drivers:misc: ti-st: reinit completion before send
drivers:misc: ti-st: fail-safe on wrong pkt type
drivers:misc: ti-st: reinit completion on ver read
drivers:misc:ti-st: platform hooks for chip states
drivers:misc: ti-st: avoid a misleading dbg msg
base/devres.c: quiet sparse noise about context imbalance
pti: add missing CONFIG_PCI dependency
drivers/base/devtmpfs.c: correct annotation of `setup_done'
driver core: fix kernel-doc warning in platform.c
firmware: fix google/gsmi.c build warning
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
staging: tidspbridge: fix compilation on dsp clock functions
staging: octeon-ethernet: Add missing #includes.
Staging: zcache: signedness bug in tmem_get()
staging: zcache: fix crash on high memory swap
staging: brcm80211: SPARC build error fix
staging: brcm80211: fix compile error on non-x86 archs since 3.0 kernel
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__netpoll_rx() doesnt properly handle skbs with small header
pskb_may_pull() or pskb_trim_rcsum() can change skb->data, we must
reload it.
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Signed-off-by: Francois Romieu <[email protected]>
Spotted-by: Thomas Jarosch <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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In ti_hecc_probe(), the spinlock priv->mbx_lock is not
inited, causing a spinlock lockup BUG.
Acked-by: Anant Gole <[email protected]>
Signed-off-by: Abhilash K V <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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In ti_hecc_xmit(), local variable "data" is not initialized before
being used.
This initialization got inadvertently removed in the following patch:
can: Unify droping of invalid tx skbs and netdev stats
Acked-by: Anant Gole <[email protected]>
Signed-off-by: Abhilash K V <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Fix the following build error:
CC drivers/net/sh_eth.o
drivers/net/sh_eth.c:1115: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘sh_eth_interrupt’
drivers/net/sh_eth.c: In function ‘sh_eth_open’:
drivers/net/sh_eth.c:1387: error: implicit declaration of function ‘request_irq’
drivers/net/sh_eth.c:1387: error: ‘sh_eth_interrupt’ undeclared (first use in this function)
drivers/net/sh_eth.c:1387: error: (Each undeclared identifier is reported only once
drivers/net/sh_eth.c:1387: error: for each function it appears in.)
drivers/net/sh_eth.c:1391: error: ‘IRQF_SHARED’ undeclared (first use in this function)
drivers/net/sh_eth.c:1424: error: implicit declaration of function ‘free_irq’
make[2]: *** [drivers/net/sh_eth.o] Error 1
Signed-off-by: Yoshihiro Shimoda <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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According to the DP83865 datasheet we need to clear
the interrupt status bit by writing a 1 to the
corresponding bit in INT_CLEAR (2:0 are reserved).
Proposed and tested by Thorsten.
Signed-off-by: Thorsten Schubert <[email protected]>
Signed-off-by: Giuseppe Cavallaro <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] memory hotplug: only unassign assigned increments
[S390] Change default action from reipl to stop for on_restart
[S390] arch/s390/kernel/ipl.c: correct error detection check
[S390] drivers/s390/block/dasd_ioctl.c: add missing kfree
[S390] nss,initrd: kernel image and initrd must be in different segments
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According to the SFI specification irq number 0xFF means device has no
interrupt or interrupt attached via GPIO.
Currently, we don't handle this special case and set irq field in
*_board_info structs to 255. It leads to confusion in some drivers.
Accelerometer driver tries to register interrupt 255, fails and prints
"Cannot get IRQ" to dmesg.
Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Alan Cox <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (32 commits)
ALSA: hda: Conexant: Allow different output types to share DAC
ASoC: Correct element count for WM8996 sidetone HPF
ASoC: Tegra: wm8903 machine driver: Drop Ventana support
ASoC: Add samsung maintainer
ASoC: Add Springbank I/O card to Speyside Kconfig
ALSA: hda/conexant - Enable ADC-switching for auto-mic mode, too
ALSA: hda - Fix double-headphone/speaker paths for Cxt auto-parser
ALSA: hda - Update jack-sense info even when no automute is set
ALSA: hda - Fix output-path initialization for Realtek auto-parser
sound/soc/fsl/mpc8610_hpcd.c: add missing of_node_put
sound/soc/fsl/p1022_ds.c: add missing of_node_put
sound/soc/ep93xx/ep93xx-i2s.c: add missing kfree
sound/soc/kirkwood/kirkwood-i2s.c: add missing kfree
ASoC: soc-core: use GFP_KERNEL flag for kmalloc in snd_soc_cnew
sound/soc/fsl/fsl_dma.c: add missing of_node_put
ASoC: Clear completions from late WM8996 FLL lock IRQs
ASoC: Clear any outstanding WM8962 FLL lock completions before waiting
ASoC: Ensure we only run Speyside WM8962 bias level callbacks once
ASoC: Fix configuration of WM8996 input enables
ASoC: WM8996 record paths need AIFCLK
...
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git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc into fixes
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git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc into fixes
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into sh-fixes-for-linus
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This bug causes the IECSR register clear failure. In this case, the RETE
(retry error threshold exceeded) interrupt will be generated and cannot be
cleared. So the related ISR may be called persistently.
The RETE bit in IECSR is cleared by writing a 1 to it.
Signed-off-by: Liu Gang <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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have irq.
The previous rtc-s3c had two issues related with its IRQ.
1. Users cannot open rtc multiple times because an open operation
calls request_irq on the same IRQ. (e.g., two user processes wants to
open and read RTC time from rtc-s3c at the same time)
2. If alarm is set and no one has the rtc opened with filesystem
(either the alarm is set by kernel/boot-loader or user set an alarm and
closed rtc dev file), the pending bit is not cleared and no further
interrupt is invoked. When the alarm is used by the system itself such
as a resume from suspend-to-RAM or other Low-power modes/idle, this is
a critical issue.
This patch mitigates these issues by calling request_irq at probe and
free_irq at remove.
Signed-off-by: MyungJoo Ham <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Acked-by: Kukjin Kim <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: Changhwan Youn <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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RTC-S3C used to print out debug messages incorrectly. This patch
corrects incorrect outputs. (undecoded bcd numbers, incorrectly decoded
register values)
This patch affects the pr-debug messages only.
Signed-off-by: MyungJoo Ham <[email protected]>
Signed-off-by: Kyungmin Park <[email protected]>
Acked-by: Kukjin Kim <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: Changhwan Youn <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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unregister all registered leds
bd2802_unregister_led_classdev() should unregister all registered
instances of led_classdev class that had registered by
bd2802_register_led_classdev().
Signed-off-by: Axel Lin <[email protected]>
Acked-by: Kim Kyuwon <[email protected]>
Cc: Richard Purdie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Fix the following build errors:
drivers/tty/serial/8250_early.c:160: error: 'BASE_BAUD' undeclared (first use in this function): 1 errors in 1 logs
drivers/tty/serial/8250_early.c:37:24: error: asm/serial.h: No such file or directory: 1 errors in 1 logs
I am not sure if (1843200 / 16) is suitable for cris, but most other
arch's define it as this value.
Signed-off-by: WANG Cong <[email protected]>
Cc: Mikael Starvik <[email protected]>
Cc: Jesper Nilsson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Since 43cc71eed12 ("platform: prefix MODALIAS with "platform:""), the
platform modalias is prefixed with "platform:".
This patch changes the MODULE_ALIAS to "platform:ab8500-pwm".
Signed-off-by: Axel Lin <[email protected]>
Acked-by: Arun Murthy <[email protected]>
Cc: Linus Walleij <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Make sure we are passing the same cookie in all calls to
request_threaded_irq() and free_irq().
Signed-off-by: Axel Lin <[email protected]>
Cc: Donggeun Kim <[email protected]>
Cc: Minkyu Kang <[email protected]>
Cc: Kyungmin Park <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This is an i2c driver, not a platform driver, thus use "i2c" prefix for
the module alias.
Signed-off-by: Axel Lin <[email protected]>
Acked-by: Michael Hennerich <[email protected]>
Cc: Richard Purdie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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We need a callback to do some things after pwm_enable, pwm_disable
and pwm_config.
Signed-off-by: Dilan Lee <[email protected]>
Reviewed-by: Robert Morell <[email protected]>
Reviewed-by: Arun Murthy <[email protected]>
Cc: Richard Purdie <[email protected]>
Cc: Paul Mundt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Commit 79dfdaccd1d5 ("memcg: make oom_lock 0 and 1 based rather than
counter") tried to oom lock the hierarchy and roll back upon
encountering an already locked memcg.
The code is confused when it comes to detecting a locked memcg, though,
so it would fail and rollback after locking one memcg and encountering
an unlocked second one.
The result is that oom-locking hierarchies fails unconditionally and
that every oom killer invocation simply goes to sleep on the oom
waitqueue forever. The tasks practically hang forever without anyone
intervening, possibly holding locks that trip up unrelated tasks, too.
Signed-off-by: Johannes Weiner <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Add missing include of linux/module.h for drivers that use interfaces from
linux/module.h. This patch fixes build errors.
Signed-off-by: Axel Lin <[email protected]>
Cc: Jonathan McDowell <[email protected]>
Acked-by: Kristoffer Ericson <[email protected]>
Cc: Magnus Damm <[email protected]>
Cc: Richard Purdie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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ep93xx_bl.c uses interfaces from linux/module.h, so it should include
that file. This patch fixes build errors:
CC [M] drivers/video/backlight/ep93xx_bl.o
drivers/video/backlight/ep93xx_bl.c:138: error: 'THIS_MODULE' undeclared here (not in a function)
drivers/video/backlight/ep93xx_bl.c:158: error: expected declaration specifiers or '...' before string constant
drivers/video/backlight/ep93xx_bl.c:158: warning: data definition has no type or storage class
...
Signed-off-by: Axel Lin <[email protected]>
Acked-by: H Hartley Sweeten <[email protected]>
Cc: Ryan Mallon <[email protected]>
Cc: Richard Purdie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Replace/remove use of RIO v.1.2 registers/bits that are not
forward-compatible with newer versions of RapidIO specification.
RapidIO specification v.1.3 removed Write Port CSR, Doorbell CSR,
Mailbox CSR and Mailbox and Doorbell bits of the PEF CAR.
Use of removed (since RIO v.1.3) register bits affects users of
currently available 1.3 and 2.x compliant devices who may use not so
recent kernel versions.
Removing checks for unsupported bits makes corresponding routines
compatible with all versions of RapidIO specification. Therefore,
backporting makes stable kernel versions compliant with RIO v.1.3 and
later as well.
Signed-off-by: Alexandre Bounine <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Li Yang <[email protected]>
Cc: Thomas Moll <[email protected]>
Cc: Chul Kim <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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ZONE_CONGESTED is only cleared in kswapd, but pages can be freed in any
task. It's possible ZONE_CONGESTED isn't cleared in some cases:
1. the zone is already balanced just entering balance_pgdat() for
order-0 because concurrent tasks free memory. In this case, later
check will skip the zone as it's balanced so the flag isn't cleared.
2. high order balance fallbacks to order-0. quote from Mel: At the
end of balance_pgdat(), kswapd uses the following logic;
If reclaiming at high order {
for each zone {
if all_unreclaimable
skip
if watermark is not met
order = 0
loop again
/* watermark is met */
clear congested
}
}
i.e. it clears ZONE_CONGESTED if it the zone is balanced. if not,
it restarts balancing at order-0. However, if the higher zones are
balanced for order-0, kswapd will miss clearing ZONE_CONGESTED as
that only happens after a zone is shrunk. This can mean that
wait_iff_congested() stalls unnecessarily.
This patch makes kswapd clear ZONE_CONGESTED during its initial
highmem->dma scan for zones that are already balanced.
Signed-off-by: Shaohua Li <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Reviewed-by: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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It seems that 7bf693951a8e ("console: allow to retain boot console via
boot option keep_bootcon") doesn't always achieve what it aims, as when
printk_late_init() runs it unconditionally turns off all boot consoles.
With this patch, I am able to see more messages on the boot console in
KVM guests than I can without, when keep_bootcon is specified.
I think it is appropriate for the relevant -stable trees. However, it's
more of an annoyance than a serious bug (ideally you don't need to keep
the boot console around as console handover should be working -- I was
encountering a situation where the console handover wasn't working and
not having the boot console available meant I couldn't see why).
Signed-off-by: Nishanth Aravamudan <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Alan Cox <[email protected]>
Cc: Greg KH <[email protected]>
Acked-by: Fabio M. Di Nitto <[email protected]>
Cc: <[email protected]> [2.6.39.x, 3.0.x]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Paul said: I left Google at the end of last week - if it's not bouncing
already, [email protected] isn't going to work for much longer.
Signed-off-by: Wanlong Gao <[email protected]>
Acked-by: Paul Menage <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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I get the below warning:
BUG: using smp_processor_id() in preemptible [00000000] code: bash/746
caller is native_sched_clock+0x37/0x6e
Pid: 746, comm: bash Tainted: G W 3.0.0+ #254
Call Trace:
[<ffffffff813435c6>] debug_smp_processor_id+0xc2/0xdc
[<ffffffff8104158d>] native_sched_clock+0x37/0x6e
[<ffffffff81116219>] try_to_free_mem_cgroup_pages+0x7d/0x270
[<ffffffff8114f1f8>] mem_cgroup_force_empty+0x24b/0x27a
[<ffffffff8114ff21>] ? sys_close+0x38/0x138
[<ffffffff8114ff21>] ? sys_close+0x38/0x138
[<ffffffff8114f257>] mem_cgroup_force_empty_write+0x17/0x19
[<ffffffff810c72fb>] cgroup_file_write+0xa8/0xba
[<ffffffff811522d2>] vfs_write+0xb3/0x138
[<ffffffff8115241a>] sys_write+0x4a/0x71
[<ffffffff8114ffd9>] ? sys_close+0xf0/0x138
[<ffffffff8176deab>] system_call_fastpath+0x16/0x1b
sched_clock() can't be used with preempt enabled. And we don't need
fast approach to get clock here, so let's use ktime API.
Signed-off-by: Shaohua Li <[email protected]>
Acked-by: KAMEZAWA Hiroyuki <[email protected]>
Tested-by: KAMEZAWA Hiroyuki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The various basic memory allocation function return NULL, not an
ERR_PTR.
The semantic patch that makes this change is available in
scripts/coccinelle/null/eno.cocci.
More information about semantic patching is available at
http://coccinelle.lip6.fr/
Signed-off-by: Thomas Meyer <[email protected]>
Cc: Niranjana Vishwanathapura <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The test for bad usage of min_t() and max_t() is missing the --ignore
type. Add it.
Signed-off-by: Hui Zhu <[email protected]>
Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Change to new git tree -
(git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git).
Signed-off-by: Ralf Thielow <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Commit d1a05b6973c7 ("memcg do not try to drain per-cpu caches without
pages") added a drain_local_stock() call to a preemptible section.
The draining task looks up the cpu-local stock twice to set the
draining-flag, then to drain the stock and clear the flag again. If the
task is migrated to a different CPU in between, noone will clear the
flag on the first stock and it will be forever undrainable. Its charge
can not be recovered and the cgroup can not be deleted anymore.
Properly pin the task to the executing CPU while draining stocks.
Signed-off-by: Johannes Weiner <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]
Acked-by: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Signed-off-by: Evgeniy Polyakov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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