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First step to debletcherising the vt console layer - pick a victim and fix
the locking
This is a nice simple object with its own rules so lets pick it out for
treatment. The user of the table already has a lock so we will also use the
same lock for updates.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are multiple users of this file from different source
paths now, and rather than have ../ paths in include statements,
just move the file to the linux header dir.
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This is needed to handle the 8250 file merge mess properly for future
patches.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The function has no users inside the tree and the nios2
(out-of-mainline) port doesn't use it either (anymore).
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There are currently many cut&paste copies of what
tty_driver_install_tty does when custom ->install method is not
provided. Let's get rid of the copies and create a helper with this
setup code.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Havard Skinnemoen <hskinnemoen@google.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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After adding devpts multiple-insrances sysctl kernel.pty.max limit pty count for
each devpts instance independently, while kernel.pty.nr shows total pty count.
This patch restores sysctl kernel.pty.max as global limit (4096 by default),
adds pty reseve for main devpts (mounted without "newinstance" argument),
and new sysctl to tune it: kernel.pty.reserve (1024 by default)
Also it adds devpts mount option "max=%d" to limit pty count for each devpts
instance independently. (by default NR_UNIX98_PTY_MAX == 2^20)
Thus devpts instances in containers cannot eat up all available pty even if we didn't
set any limits, while with "max" argument we can adjust limits more precisely.
Plus, now open("/dev/ptmx") return -ENOSPC in case lack of pty indexes,
this is more informative than -EIO.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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cleanup hack added in v2.6.27-3203-g15582d3
comment from that patch:
: pty: If the administrator creates a device for a ptmx slave we should not error
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: The open path for ptmx slaves is via the ptmx device. Opening them any
: other way is not allowed. Vegard Nossum found that previously this was not
: the case and mknod foo c 128 42; cat foo would produce nasty diagnostics
:
: Signed-off-by: Alan Cox <alan@redhat.com>
: Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
devpts_get_tty() returns non-null only for inodes on devpts, but there is no
inodes for master-devices, /dev/ptmx (/dev/pts/ptmx) is the only way to open them.
Thus we can completely forbid lookup for master-devices and eliminate that hack in
tty_init_dev() because tty_open() will get EIO from tty_driver_lookup_tty().
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
USB fixes for 3.3-rc3
Here are a few minor USB fixes and a bunch of device id updates for the
USB drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tag 'usb-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: usbserial: add new PID number (0xa951) to the ftdi driver
usb: ch9.h: usb_endpoint_maxp() uses __le16_to_cpu()
usb: musb: fix a build error on mips
uwb & wusb & usb wireless controllers: fix kconfig error & build errors
usb: Skip PCI USB quirk handling for Netlogic XLP
powerpc/usb: fix issue of CPU halt when missing USB PHY clock
usb: otg: mv_otg: Add dependence
usb: host: Distinguish Kconfig text for Freescale controllers
USB: add new zte 3g-dongle's pid to option.c
usb: ch9.h: usb_endpoint_maxp() uses __le16_to_cpu()
USB: qcserial: don't enable autosuspend
USB: qcserial: add several new serial devices
usb: otg: mv_otg: Add dependence
usb: gadget: zero: fix bug in loopback autoresume handling
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The usb/ch9.h will be installed to /usr/include/linux,
and be used from user space.
But le16_to_cpu() is only defined for kernel code.
Without this patch, user space compile will be broken.
Special thanks to Stefan Becker
Reported-by: Stefan Becker <chemobejk@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
This series contains pending target bug-fixes and cleanups for v3.3-rc3
that have been addressed the past weeks in lio-core.git.
Some of the highlights include:
- Fix handling for control CDBs with data greater than PAGE_SIZE (andy)
- Use IP_FREEBIND for iscsi-target to address network portal creation
issues with systemd (dax)
- Allow PERSISTENT RESERVE IN for non-reservation holder (marco)
- Fix iblock se_dev_attrib.unmap_granularity (marco)
- Fix unsupported WRITE_SAME sense payload handling (martin)
- Add workaround for zero-length control CDB handling (nab)
- Fix discovery with INADDR_ANY and IN6ADDR_ANY_INIT (nab)
- Fix target_submit_cmd() exception handling (nab)
- Return correct ASC for unimplemented VPD pages (roland)
- Don't zero pages used for data buffers (roland)
- Fix return code of core_tpg_.*_lun (sebastian)
* '3.3-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (26 commits)
target: Fix unsupported WRITE_SAME sense payload
iscsi: use IP_FREEBIND socket option
iblock: fix handling of large requests
target: handle empty string writes in sysfs
iscsi_target: in_aton needs linux/inet.h
target: Fix iblock se_dev_attrib.unmap_granularity
target: Fix target_submit_cmd() exception handling
target: Change target_submit_cmd() to return void
target: accept REQUEST_SENSE with 18bytes
target: Fail INQUIRY commands with EVPD==0 but PAGE CODE!=0
target: Return correct ASC for unimplemented VPD pages
iscsi-target: Fix discovery with INADDR_ANY and IN6ADDR_ANY_INIT
target: Allow control CDBs with data > 1 page
iscsi-target: Fix up a few assignments
iscsi-target: make one-bit bitfields unsigned
iscsi-target: Fix double list_add with iscsit_alloc_buffs reject
iscsi-target: Fix reject release handling in iscsit_free_cmd()
target: fix return code of core_tpg_.*_lun
target: use save/restore lock primitive in core_dec_lacl_count()
target: avoid multiple outputs in scsi_dump_inquiry()
...
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Retval not very useful, and may even be harmful. Once submitted, fabrics
should expect a sense error if anything goes wrong. All fabrics checking
of this retval are useless or broken:
fc checks it just to emit more debug output.
ib_srpt trickles retval up, then it is ignored.
qla2xxx trickles it up, which then causes a bug because the abort goto
in qla_target.c thinks cmd hasn't been sent to target.
Just returning nothing is best.
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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We need to handle >1 page control cdbs, so extend the code to do a vmap
if bigger than 1 page. It seems like kmap() is still preferable if just
a page, fewer TLB shootdowns(?), so keep using that when possible.
Rename function pair for their new scope.
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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fbdev fixes for 3.3
It includes:
- compile fix for fsl-diu-fb
- fix for a suspend/resume issue in atmel_lcdfb
- fix for a suspend/resume issue in OMAP
- workaround for a hardware bug to avoid physical damage in OMAP
- really trivial dead code removal in intelfb
* tag 'fbdev-fixes-for-3.3-1' of git://github.com/schandinat/linux-2.6:
atmel_lcdfb: fix usage of CONTRAST_CTR in suspend/resume
intelfb: remove some dead code
drivers/video: compile fixes for fsl-diu-fb.c
OMAPDSS: HDMI: PHY burnout fix
OMAP: 4430SDP/Panda: add HDMI HPD gpio
OMAP: 4430SDP/Panda: setup HDMI GPIO muxes
OMAPDSS: remove wrong HDMI HPD muxing
OMAP: 4430SDP/Panda: rename HPD GPIO to CT_CP_HPD
OMAP: 4430SDP/Panda: use gpio_free_array to free HDMI gpios
OMAPDSS: use sync versions of pm_runtime_put
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A hardware bug in the OMAP4 HDMI PHY causes physical damage to the board
if the HDMI PHY is kept powered on when the cable is not connected.
This patch solves the problem by adding hot-plug-detection into the HDMI
IP driver. This is not a real HPD support in the sense that nobody else
than the IP driver gets to know about the HPD events, but is only meant
to fix the HW bug.
The strategy is simple: If the display device is turned off by the user,
the PHY power is set to OFF. When the display device is turned on by the
user, the PHY power is set either to LDOON or TXON, depending on whether
the HDMI cable is connected.
The reason to avoid PHY OFF when the display device is on, but the cable
is disconnected, is that when the PHY is turned OFF, the HDMI IP is not
"ticking" and thus the DISPC does not receive pixel clock from the HDMI
IP. This would, for example, prevent any VSYNCs from happening, and
would thus affect the users of omapdss. By using LDOON when the cable is
disconnected we'll avoid the HW bug, but keep the HDMI working as usual
from the user's point of view.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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arch: fix ioport mapping on mips,sh
Kevin Cernekee reported that recent cleanup that replaced pci_iomap with
a generic function failed to take into account the differences in io
port handling on mips and sh architectures.
Rather than revert the changes reintroducing the code duplication, this
patchset fixes this by adding ability for architectures to override
ioport mapping for pci devices.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
sh: use the the PCI channels's io_map_base
mips: use the the PCI controller's io_map_base
lib: add NO_GENERIC_PCI_IOPORT_MAP
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Some architectures need to override the way
IO port mapping is done on PCI devices.
Supply a generic macro that calls
ioport_map, and make it possible for architectures
to override.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
mfd: Avoid twl6040-codec PLL reconfiguration when not needed
mfd: Store twl6040-codec mclk configuration
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Store the last used mclk configuration for the PLL.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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Setting the task name is done within setup_new_exec() by accessing
bprm->filename. However this happens after flush_old_exec().
This may result in a use after free bug, flush_old_exec() may
"complete" vfork_done, which will wake up the parent which in turn
may free the passed in filename.
To fix this add a new tcomm field in struct linux_binprm which
contains the now early generated task name until it is used.
Fixes this bug on s390:
Unable to handle kernel pointer dereference at virtual kernel address 0000000039768000
Process kworker/u:3 (pid: 245, task: 000000003a3dc840, ksp: 0000000039453818)
Krnl PSW : 0704000180000000 0000000000282e94 (setup_new_exec+0xa0/0x374)
Call Trace:
([<0000000000282e2c>] setup_new_exec+0x38/0x374)
[<00000000002dd12e>] load_elf_binary+0x402/0x1bf4
[<0000000000280a42>] search_binary_handler+0x38e/0x5bc
[<0000000000282b6c>] do_execve_common+0x410/0x514
[<0000000000282cb6>] do_execve+0x46/0x58
[<00000000005bce58>] kernel_execve+0x28/0x70
[<000000000014ba2e>] ____call_usermodehelper+0x102/0x140
[<00000000005bc8da>] kernel_thread_starter+0x6/0xc
[<00000000005bc8d4>] kernel_thread_starter+0x0/0xc
Last Breaking-Event-Address:
[<00000000002830f0>] setup_new_exec+0x2fc/0x374
Kernel panic - not syncing: Fatal exception: panic_on_oops
Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Power management fixes for 3.3-rc3
Three power management regression fixes, one for a recent regression introcuded
by the freezer changes during the 3.3 merge window and two for regressions
in cpuidle (resulting from PM QoS changes) and in the hibernate user space
interface, both introduced during the 3.2 development cycle.
They include:
* Two hibernate (s2disk) regression fixes from Srivatsa S. Bhat (for
regressions introduced during the 3.3 merge window and during the 3.2
development cycle).
* A cpuidle fix from Venki Pallipadi for a regression resulting from PM QoS
changes during the 3.2 development cycle causing cpuidle to work incorrectly
for CONFIG_PM unset.
* tag 'pm-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / QoS: CPU C-state breakage with PM Qos change
PM / Freezer: Thaw only kernel threads if freezing of kernel threads fails
PM / Hibernate: Thaw kernel threads in SNAPSHOT_CREATE_IMAGE ioctl path
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Looks like change "PM QoS: Move and rename the implementation files"
merged during the 3.2 development cycle made PM QoS depend on
CONFIG_PM which depends on (PM_SLEEP || PM_RUNTIME).
That breaks CPU C-states with kernels not having these CONFIGs, causing CPUs
to spend time in Polling loop idle instead of going into deep C-states,
consuming way way more power. This is with either acpi idle or intel idle
enabled.
Either CONFIG_PM should be enabled with any pm_qos users or
the !CONFIG_PM pm_qos_request() should return sane defaults not to break
the existing users. Here's is the patch for the latter option.
[rjw: Modified the changelog slightly.]
Signed-off-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@vger.kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklist
Input: serio_raw - return proper result when serio_raw_read fails
Input: document device properties
Input: twl4030_keypad - fix comment (trivial)
Input: gpio_keys - fix struct device declared inside parameter list
Input: evdev - fix variable initialisation
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A struct device parameter is used in the enable and disable callbacks to
distinguish between different gpio_keys devices.
Platforms that don't use these callbacks may not include struct device
at all, as seen on arch/arm/mach-s3c2410/mach-n30.c
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
i.MX SDMA: Fix burstsize settings
ARM: mach-shmobile: both USB DMAC instances on sh7372 are slave-only
dma: sh_dma: not all SH DMAC implementations support MEMCPY
at_hdmac: bugfix for enabling channel irq
dmaengine: fix missing 'cnt' in ?: in dmatest
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Add a flag to allow platforms to specify, whether a DMAC instance supports
the MEMCPY operation. To avoid regressions, preserve the current default.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
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- Fix a regression in 16-bit Atmel NAND flash which was introduced in 3.1
- Fix breakage with MTD suspend caused by the API rework
- Fix a problem with resetting the MX28 BCH module
- A couple of other trivial fixes
* tag 'for-linus-3.3-20120204' of git://git.infradead.org/~dwmw2/mtd-3.3:
Revert "mtd: atmel_nand: optimize read/write buffer functions"
mtd: fix MTD suspend
jffs2: do not initialize variable unnecessarily
mtd: gpmi-nand bugfix: reset the BCH module when it is not MX23
mtd: nand: fix typo in comment
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Commits 3fe4bae88460869a8e553397cd9057a4ee7ca341 and
079c985e7a6f4ce60f931cebfdd5ee3c3 broke MTD suspend in 2 ways:
1. When the '->suspend' method is not present, we return -EOPNOTSUPP, but
the callers of 'mtd_suspend()' expects 0 instead.
2. Checking of the 'mtd' parameter against NULL has been incorrectly removed
in 'mtd_cls_suspend()'.
This patch fixes the breakages. This has been found, analyzed, reported
and tested by Rafael J. Wysocki <rjw@sisk.pl>.
Note, this patch is not needed in the stable tree because it causes a
regression introduced during the v3.3 merge window.
Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
sound fixes for 3.3-rc3
Most of commits are either regression fixes for varioud HD-audio
codecs or small ASoC fixes. Also a trivial build fix is included.
* tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Disable dynamic-power control for VIA as default
ALSA: hda - Allow analog low-current mode when dynamic power-control is on
ALSA: hda - Fix the logic to detect VIA analog low-current mode
ALSA: hda - Check power-state before changing in patch_via.c
ALSA: HDA: Fix duplicated output to more than one codec
ALSA: hda - Fix calling cs_automic twice for Cirrus codecs.
ALSA: HDA: Remove quirk for Toshiba Qosmio G50
ALSA: HDA: Fix jack creation for codecs with front and rear Line In
ALSA: hda - Apply 0x0f-VREF fix to all ASUS laptops with ALC861/660
ASoC: neo1973_wm8753: remove references to the neo1973-gta01 machine
ALSA: Add #ifdef CONFIG_PCI guard for snd_pci_quirk_* functions
ASoC: wm_hubs: fix wrong bits for LINEOUT2 N/P mixer
ALSA: HDA: Remove quirk for Asus N53Jq
ASoC: wm_hubs: Enable line out VMID buffer for single ended line outputs
ASoC: wm5100: Mark register cache as dirty when regulators are disabled
ASoC: wm8962: Mark register cache as dirty when regulators are disabled
ASoC: wm8996: Mark register cache as dirty when regulators are disabled
ASoC: wm5100: Fix microphone configuration
ASoC: wm5100: Make sure we switch to button reporting mode
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This fixes below build warning when CONFIG_PCI is not set.
CC sound/sound_core.o
In file included from sound/sound_core.c:15:
include/sound/core.h:454: warning: 'struct pci_dev' declared inside parameter list
include/sound/core.h:454: warning: its scope is only this definition or declaration, which is probably not what you want
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This fixes the race in process_vm_core found by Oleg (see
http://article.gmane.org/gmane.linux.kernel/1235667/
for details).
This has been updated since I last sent it as the creation of the new
mm_access() function did almost exactly the same thing as parts of the
previous version of this patch did.
In order to use mm_access() even when /proc isn't enabled, we move it to
kernel/fork.c where other related process mm access functions already
are.
Signed-off-by: Chris Yeoh <yeohc@au1.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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'sched-urgent-for-linus' and 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
bugs, x86: Fix printk levels for panic, softlockups and stack dumps
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf top: Fix number of samples displayed
perf tools: Fix strlen() bug in perf_event__synthesize_event_type()
perf tools: Fix broken build by defining _GNU_SOURCE in Makefile
x86/dumpstack: Remove unneeded check in dump_trace()
perf: Fix broken interrupt rate throttling
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW
sched: Fix ancient race in do_exit()
sched/nohz: Fix nohz cpu idle load balancing state with cpu hotplug
sched/s390: Fix compile error in sched/core.c
sched: Fix rq->nr_uninterruptible update race
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/reboot: Remove VersaLogic Menlow reboot quirk
x86/reboot: Skip DMI checks if reboot set by user
x86: Properly parenthesize cmpxchg() macro arguments
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This patch fixes the sampling interrupt throttling mechanism.
It was broken in v3.2. Events were not being unthrottled. The
unthrottling mechanism required that events be checked at each
timer tick.
This patch solves this problem and also separates:
- unthrottling
- multiplexing
- frequency-mode period adjustments
Not all of them need to be executed at each timer tick.
This third version of the patch is based on my original patch +
PeterZ proposal (https://lkml.org/lkml/2012/1/7/87).
At each timer tick, for each context:
- if the current CPU has throttled events, we unthrottle events
- if context has frequency-based events, we adjust sampling periods
- if we have reached the jiffies interval, we multiplex (rotate)
We decoupled rotation (multiplexing) from frequency-mode sampling
period adjustments. They should not necessarily happen at the same
rate. Multiplexing is subject to jiffies_interval (currently at 1
but could be higher once the tunable is exposed via sysfs).
We have grouped frequency-mode adjustment and unthrottling into the
same routine to minimize code duplication. When throttled while in
frequency mode, we scan the events only once.
We have fixed the threshold enforcement code in __perf_event_overflow().
There was a bug whereby it would allow more than the authorized rate
because an increment of hwc->interrupts was not executed at the right
place.
The patch was tested with low sampling limit (2000) and fixed periods,
frequency mode, overcommitted PMU.
On a 2.1GHz AMD CPU:
$ cat /proc/sys/kernel/perf_event_max_sample_rate
2000
We set a rate of 3000 samples/sec (2.1GHz/3000 = 700000):
$ perf record -e cycles,cycles -c 700000 noploop 10
$ perf report -D | tail -21
Aggregated stats:
TOTAL events: 80086
MMAP events: 88
COMM events: 2
EXIT events: 4
THROTTLE events: 19996
UNTHROTTLE events: 19996
SAMPLE events: 40000
cycles stats:
TOTAL events: 40006
MMAP events: 5
COMM events: 1
EXIT events: 4
THROTTLE events: 9998
UNTHROTTLE events: 9998
SAMPLE events: 20000
cycles stats:
TOTAL events: 39996
THROTTLE events: 9998
UNTHROTTLE events: 9998
SAMPLE events: 20000
For 10s, the cap is 2x2000x10 = 40000 samples.
We get exactly that: 20000 samples/event.
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: <stable@kernel.org> # v3.2+
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120126160319.GA5655@quad
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
lib: Fix 32-bit sparc udiv_qrnnd() definition in mpilib's longlong.h
lib: Fix multiple definitions of clz_tab
lib/digsig: checks for NULL return value
lib/mpi: added missing NULL check
lib/mpi: added comment on divide by 0 case
lib/mpi: check for possible zero length
lib/digsig: pkcs_1_v1_5_decode_emsa cleanup
lib/digsig: additional sanity checks against badly formated key payload
lib/mpi: removed unused functions
lib/mpi: checks for zero divisor length
lib/mpi: return error code on dividing by zero
lib/mpi: replaced MPI_NULL with normal NULL
lib/mpi: added missing NULL check
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MPI_NULL is replaced with normal NULL.
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Reviewed-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
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This patch fixes merge conflict resolution breakage introduced by merge
d3712b9dfcf4 ("Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream").
The commit changed 'mtd_can_have_bb()' function and made it always
return zero, which is incorrect. Instead, we need it to return whether
the underlying flash device can have bad eraseblocks or not. UBI needs
this information because it affects how it handles the underlying flash.
E.g., if the underlying flash is NOR, it cannot have bad blocks and any
write or erase error is fatal, and all we can do is to switch to R/O
mode. We do not need to reserve a pool of good eraseblocks for bad
eraseblocks handling, and so on.
This patch also removes 'mtd_can_have_bb()' invocations from Logfs to
ensure correct Logfs behavior.
I've tested that with this patch UBI works on top of NOR and NAND
flashes emulated by mtdram and nandsim correspondingly.
This patch is based on patch from Linus Torvalds.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Jörn Engel <joern@logfs.org>
Acked-by: Prasad Joshi <prasadjoshi.linux@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There are few important bug fixes for LogFS
* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
Logfs: Allow NULL block_isbad() methods
logfs: Grow inode in delete path
logfs: Free areas before calling generic_shutdown_super()
logfs: remove useless BUG_ON
MAINTAINERS: Add Prasad Joshi in LogFS maintiners
logfs: Propagate page parameter to __logfs_write_inode
logfs: set superblock shutdown flag after generic sb shutdown
logfs: take write mutex lock during fsync and sync
logfs: Prevent memory corruption
logfs: update page reference count for pined pages
Fix up conflict in fs/logfs/dev_mtd.c due to semantic change in what
"mtd->block_isbad" means in commit f2933e86ad93: "Logfs: Allow NULL
block_isbad() methods" clashing with the abstraction changes in the
commits 7086c19d0742: "mtd: introduce mtd_block_isbad interface" and
d58b27ed58a3: "logfs: do not use 'mtd->block_isbad' directly".
This resolution takes the semantics from commit f2933e86ad93, and just
makes mtd_block_isbad() return zero (false) if the 'block_isbad'
function is NULL. But that also means that now "mtd_can_have_bb()"
always returns 0.
Now, "mtd_block_markbad()" will obviously return an error if the
low-level driver doesn't support bad blocks, so this is somewhat
non-symmetric, but it actually makes sense if a NULL "block_isbad"
function is considered to mean "I assume that all my blocks are always
good".
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Here are a bunch of USB patches for 3.3-rc1.
Nothing major, largest thing here is the removal of some drivers that
did not work at all. Other than that, the normal collection of bugfixes
and new device ids.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (52 commits)
uwb & wusb: fix kconfig error
USB: Realtek cr: fix autopm scheduling while atomic
USB: ftdi_sio: Add more identifiers
xHCI: Cleanup isoc transfer ring when TD length mismatch found
usb: musb: omap2430: minor cleanups.
qcaux: add more Pantech UML190 and UML290 ports
Revert "drivers: usb: Fix dependency for USB_HWA_HCD"
usb: mv-otg - Fix build if CONFIG_USB is not set
USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE
usb: add support for STA2X11 host driver
drivers: usb: Fix dependency for USB_HWA_HCD
kernel-doc: fix new warning in usb.h
USB: OHCI: fix new compiler warnings
usb: serial: kobil_sct: fix compile warning:
drivers/usb/host/ehci-fsl.c: add missing iounmap
USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core
USB: cdc-wdm: call wake_up_all to allow driver to shutdown on device removal
USB: cdc-wdm: use two mutexes to allow simultaneous read and write
USB: cdc-wdm: updating desc->length must be protected by spin_lock
USB: usbsevseg: fix max length
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git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
* 'for-greg' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb:
usb: musb: omap2430: minor cleanups.
usb: dwc3: unmap the proper number of sg entries
usb: musb: fix shutdown while usb gadget is in use
usb: gadget: f_mass_storage: Use "bool" instead of "int" in fsg_module_parameters
usb: gadget: check for streams only for SS udcs
usb: gadget: fsl_udc: fix the usage of udc->max_ep
drivers: usb: otg: Fix dependencies for some OTG drivers
usb: renesas: silence uninitialized variable report in usbhsg_recip_run_handle()
usb: gadget: SS Isoc endpoints use comp_desc->bMaxBurst too
usb: gadget: storage: endian fix
usb: dwc3: ep0: fix compile warning
usb: musb: davinci: fix build breakage
usb: gadget: langwell: don't call gadget's disconnect()
usb: gadget: langwell: drop langwell_otg support
usb: otg: kill langwell_otg driver
usb: dwc3: ep0: tidy up Pending Request handling
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The way this driver was added by f0ae849 (usb: Add Intel Langwell USB
OTG Transceiver Driver) never even compiled together with langwell_udc,
and that's the only way for it to be useful.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: stable@vger.kernel.org # v2.6.31+
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix new kernel-doc warning:
Warning(include/linux/usb.h:1251): No description found for parameter 'num_mapped_sgs'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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1) Setting link attributes can modify the size of the attributes that
would be reported on a subsequent getlink netlink operation,
therefore min_ifinfo_dump_size needs to be adjusted. From Stefan
Gula.
2) Resegmentation of TSO frames while trimming can violate invariants
expected by callers, namely that the number of segments can only stay
the same or decrease, never increase. If MSS changes, however, we
can trim data but then end up with more segments. Fix this by only
segmenting to the MSS already recorded in the SKB. That's the
simplest fix for now and if we want to get more fancy in the future
that's a more involved change.
This probably explains some retransmit counter inaccuracies.
From Neal Cardwell.
3) Fix too-many-wakeups in POLL with AF_UNIX sockets, from Eric Dumazet.
4) Fix CAIF crashes wrt. namespace handling. From Eric Dumazet and
Eric W. Biederman.
5) TCP port selection fixes from Flavio Leitner.
6) More socket memory cgroup build fixes in certain randonfig
situations. From Glauber Costa.
7) Fix TCP memory sysctl regression reported by Ingo Molnar, also from
Glauber Costa.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
af_unix: fix EPOLLET regression for stream sockets
tcp: fix tcp_trim_head() to adjust segment count with skb MSS
net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
net caif: Register properly as a pernet subsystem.
netns: Fail conspicously if someone uses net_generic at an inappropriate time.
net: explicitly add jump_label.h header to sock.h
net: RTNETLINK adjusting values of min_ifinfo_dump_size
ipv6: Fix ip_gre lockless xmits.
xen-netfront: correct MAX_TX_TARGET calculation.
netns: fix net_alloc_generic()
tcp: bind() optimize port allocation
tcp: bind() fix autoselection to share ports
l2tp: l2tp_ip - fix possible oops on packet receive
iwlwifi: fix PCI-E transport "inta" race
mac80211: set bss_conf.idle when vif is connected
mac80211: update oper_channel on ibss join
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sysctl_tcp_mem() initialization was moved to sysctl_tcp_ipv4.c
in commit 3dc43e3e4d0b52197d3205214fe8f162f9e0c334, since it
became a per-ns value.
That code, however, will never run when CONFIG_SYSCTL is
disabled, leading to bogus values on those fields - causing hung
TCP sockets.
This patch fixes it by keeping an initialization code in
tcp_init(). It will be overwritten by the first net namespace
init if CONFIG_SYSCTL is compiled in, and do the right thing if
it is compiled out.
It is also named properly as tcp_init_mem(), to properly signal
its non-sysctl side effect on TCP limits.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/4F22D05A.8030604@parallels.com
[ renamed the function, tidied up the changelog a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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By definition net_generic should never be called when it can return
NULL. Fail conspicously with a BUG_ON to make it clear when people mess
up that a NULL return should never happen.
Recently there was a bug in the CAIF subsystem where it was registered
with register_pernet_device instead of register_pernet_subsys. It was
erroneously concluded that net_generic could validly return NULL and
that net_assign_generic was buggy (when it was just inefficient).
Hopefully this BUG_ON will prevent people to coming to similar erroneous
conclusions in the futrue.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 36a1211970193ce215de50ed1e4e1272bc814df1 removed linux/module.h
include statement from one of the headers that end up in net/sock.h.
It was providing us with static_branch() definition implicitly, so
after its removal the build got broken.
To fix this, and avoid having this happening in the future,
let me do the right thing and include linux/jump_label.h
explicitly in sock.h.
Signed-off-by: Glauber Costa <glommer@parallels.com>
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 2aede851ddf08666f68ffc17be446420e9d2a056
PM / Hibernate: Freeze kernel threads after preallocating memory
introduced a mechanism by which kernel threads were frozen after
the preallocation of hibernate image memory to avoid problems with
frozen kernel threads not responding to memory freeing requests.
However, it overlooked the s2disk code path in which the
SNAPSHOT_CREATE_IMAGE ioctl was run directly after SNAPSHOT_FREE,
which caused freeze_workqueues_begin() to BUG(), because it saw
that worqueues had been already frozen.
Although in principle this issue might be addressed by removing
the relevant BUG_ON() from freeze_workqueues_begin(), that would
reintroduce the very problem that commit 2aede851ddf08666f68ffc17be4
attempted to avoid into that particular code path. For this reason,
to fix the issue at hand, introduce thaw_kernel_threads() and make
the SNAPSHOT_FREE ioctl execute it.
Special thanks to Srivatsa S. Bhat for detailed analysis of the
problem.
Reported-and-tested-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: stable@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Here are some patches for the 3.3-rc1 tree.
It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.
* tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
stable: update documentation to ask for kernel version
base/core.c:fix typo in comment in function device_add
Documentation: devres: add allocation functions to list of supported calls
Documentation update for the driver model core
kernel-doc: fix new warnings in driver-core
kernel-doc: fix new warnings in debugfs
kernel-doc: fix new warnings in device.h
driver core: remove drivers/base/sys.c and include/linux/sysdev.h
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Fix new kernel-doc warnings:
Warning(include/linux/device.h:299): No description found for parameter 'name'
Warning(include/linux/device.h:299): No description found for parameter 'subsys'
Warning(include/linux/device.h:299): No description found for parameter 'node'
Warning(include/linux/device.h:299): No description found for parameter 'add_dev'
Warning(include/linux/device.h:299): No description found for parameter 'remove_dev'
Warning(include/linux/device.h:685): No description found for parameter 'id'
Warning(include/linux/device.h:1009): No description found for parameter '__driver'
Warning(include/linux/device.h:1009): No description found for parameter '__register'
Warning(include/linux/device.h:1009): No description found for parameter '__unregister'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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