| Age | Commit message (Collapse) | Author | Files | Lines |
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Impact: modify boot tracer
We used to disable the initcall tracing at a specified time (IE: end
of builtin initcalls). But we don't need it anymore. It will be
stopped when initcalls are finished.
However we want two things:
_Start this tracing only after pre-smp initcalls are finished.
_Since we are planning to trace sched_switches at the same time, we
want to enable them only during the initcall execution.
For this purpose, this patch introduce two functions to enable/disable
the sched_switch tracing during boot.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: add new tracepoint APIs to allow the batched registration of probes
new APIs separate tracepoint_probe_register(),
tracepoint_probe_unregister() into 2 steps. The first step of them
is just update tracepoint_entry, not connect or disconnect.
this patch introduces tracepoint_probe_update_all() for update all.
these APIs are very useful for registering lots of probes
but just updating once. Another very important thing is that
*_noupdate APIs do not require module_mutex.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (33 commits)
af_unix: netns: fix problem of return value
IRDA: remove double inclusion of module.h
udp: multicast packets need to check namespace
net: add documentation for skb recycling
key: fix setkey(8) policy set breakage
bpa10x: free sk_buff with kfree_skb
xfrm: do not leak ESRCH to user space
net: Really remove all of LOOPBACK_TSO code.
netfilter: nf_conntrack_proto_gre: switch to register_pernet_gen_subsys()
netns: add register_pernet_gen_subsys/unregister_pernet_gen_subsys
net: delete excess kernel-doc notation
pppoe: Fix socket leak.
gianfar: Don't reset TBI<->SerDes link if it's already up
gianfar: Fix race in TBI/SerDes configuration
at91_ether: request/free GPIO for PHY interrupt
amd8111e: fix dma_free_coherent context
atl1: fix vlan tag regression
SMC91x: delete unused local variable "lp"
myri10ge: fix stop/go mmio ordering
bonding: fix panic when taking bond interface down before removing module
...
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s/user/used/
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'cris_move' of git://www.jni.nu/cris:
[CRIS] Move header files from include to arch/cris/include.
[CRISv32] Remove warning in io.h
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Impact: cleanup
This patch cleans up the NMI safe code for dynamic ftrace as suggested
by Andrew Morton.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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netns ops which are registered with register_pernet_gen_device() are
shutdown strictly before those which are registered with
register_pernet_subsys(). Sometimes this leads to opposite (read: buggy)
shutdown ordering between two modules.
Add register_pernet_gen_subsys()/unregister_pernet_gen_subsys() for modules
which aren't elite enough for entry in struct net, and which can't use
register_pernet_gen_device(). PPTP conntracking module is such one.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove excess kernel-doc function parameters from networking header
& driver files:
Warning(include/net/sock.h:946): Excess function parameter or struct member 'sk' description in 'sk_filter_release'
Warning(include/linux/netdevice.h:1545): Excess function parameter or struct member 'cpu' description in 'netif_tx_lock'
Warning(drivers/net/wan/z85230.c:712): Excess function parameter or struct member 'regs' description in 'z8530_interrupt'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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libata currently imposes a UDMA5 max transfer rate and 200 sector max
transfer size for SATA devices that sit behind a pata-sata bridge. Lots
of devices have known good bridges that don't need this limit applied.
The MTRON SSD disks are such devices. Transfer rates are increased by
20-30% with the restriction removed.
So add a "blacklist" entry for the MTRON devices, with a flag indicating
that the bridge is known good.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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The init_phy() function attaches to the PHY, then configures the
SerDes<->TBI link (in SGMII mode). The TBI is on the MDIO bus with the PHY
(sort of) and is accessed via the gianfar's MDIO registers, using the
functions gfar_local_mdio_read/write(), which don't do any locking.
The previously attached PHY will start a work-queue on a timer, and
probably an irq handler as well, which will talk to the PHY and thus use
the MDIO bus. This uses phy_read/write(), which have locking, but not
against the gfar_local_mdio versions.
The result is that PHY code will try to use the MDIO bus at the same time
as the SerDes setup code, corrupting the transfers.
Setting up the SerDes before attaching to the PHY will insure that there is
no race between the SerDes code and *our* PHY, but doesn't fix everything.
Typically the PHYs for all gianfar devices are on the same MDIO bus, which
is associated with the first gianfar device. This means that the first
gianfar's SerDes code could corrupt the MDIO transfers for a different
gianfar's PHY.
The lock used by phy_read/write() is contained in the mii_bus structure,
which is pointed to by the PHY. This is difficult to access from the
gianfar drivers, as there is no link between a gianfar device and the
mii_bus which shares the same MDIO registers. As far as the device layer
and drivers are concerned they are two unrelated devices (which happen to
share registers).
Generally all gianfar devices' PHYs will be on the bus associated with the
first gianfar. But this might not be the case, so simply locking the
gianfar's PHY's mii bus might not lock the mii bus that the SerDes setup
code is going to use.
We solve this by having the code that creates the gianfar platform device
look in the device tree for an mdio device that shares the gianfar's
registers. If one is found the ID of its platform device is saved in the
gianfar's platform data.
A new function in the gianfar mii code, gfar_get_miibus(), can use the bus
ID to search through the platform devices for a gianfar_mdio device with
the right ID. The platform device's driver data is the mii_bus structure,
which the SerDes setup code can use to lock the current bus.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
CC: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Impact: fix crashes that can occur in NMI handlers, if their code is modified
Modifying code is something that needs special care. On SMP boxes,
if code that is being modified is also being executed on another CPU,
that CPU will have undefined results.
The dynamic ftrace uses kstop_machine to make the system act like a
uniprocessor system. But this does not address NMIs, that can still
run on other CPUs.
One approach to handle this is to make all code that are used by NMIs
not be traced. But NMIs can call notifiers that spread throughout the
kernel and this will be very hard to maintain, and the chance of missing
a function is very high.
The approach that this patch takes is to have the NMIs modify the code
if the modification is taking place. The way this works is that just
writing to code executing on another CPU is not harmful if what is
written is the same as what exists.
Two buffers are used: an IP buffer and a "code" buffer.
The steps that the patcher takes are:
1) Put in the instruction pointer into the IP buffer
and the new code into the "code" buffer.
2) Set a flag that says we are modifying code
3) Wait for any running NMIs to finish.
4) Write the code
5) clear the flag.
6) Wait for any running NMIs to finish.
If an NMI is executed, it will also write the pending code.
Multiple writes are OK, because what is being written is the same.
Then the patcher must wait for all running NMIs to finish before
going to the next line that must be patched.
This is basically the RCU approach to code modification.
Thanks to Ingo Molnar for suggesting the idea, and to Arjan van de Ven
for his guidence on what is safe and what is not.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
Fix incompatibility with versions of Perl less than 5.6.0
kbuild: do not include arch/<ARCH>/include/asm in find-sources twice.
kbuild: tag with git revision when git describe is missing
kbuild: prevent modpost from looking for a .cmd file for a static library linked into a module
kbuild: fix KBUILD_EXTRA_SYMBOLS
adjust init section definitions
scripts/checksyscalls.sh: fix for non-gnu sed
scripts/package: don't break if %{_smp_mflags} isn't set
kbuild: setlocalversion: dont include svn change count
kbuild: improve check-symlink
kbuild: mkspec - fix build rpm
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: add quirk entry for no-name keyboard (0x13ba/0x0017)
HID: fix hid_device_id for cross compiling
HID: sync on deleted io_retry timer in usbhid driver
HID: fix oops during suspend of unbound HID devices
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
amd8111e: Fix rx return code
pktgen: fix multiple queue warning
mac80211.h: fix kernel-doc excesses
p54: fix build warnings
ath5k: Reset key cache on interface up, thus fixing resume
mac80211: correct warnings in minstrel rate control algorithm
RFKILL: fix input layer initialisation
p54: fix misbehavings when firmware can't be found
dm9601: runtime mac address change support
via-velocity: use driver string instead of dev->name before register_netdev()
drivers/net/wan/syncppp: Fix unused-var warnings
mlx4: Setting the correct offset for default mac address
mlx4_en: remove duplicated #include
ibm_newemac: Fix typo in flow control config option
ehea: Detect 16GB hugepages for firmware restriction
dmfe: check pci_alloc_consistent errors
qeth: avoid skb_under_panic for malformatted inbound data
qeth: remove unnecessary support ckeck in sysfs route6
qeth: fix offset error in non prealloc header path
qeth: remove non-recover-thread checkings
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: ASoC: Fix WM9713 ALC Decay Time name
ALSA: ASoC: Fix some minor errors in mpc5200 psc i2s driver
ALSA: ASoC: Fix mono controls after conversion to support full int masks
ALSA: sound/ice1712: indentation & braces disagree - add braces
ALSA: usb - Add quirk for Edirol UA-25EX advanced modes
sound: struct device - replace bus_id with dev_name(), dev_set_name()
ALSA: hda - Add reboot notifier
ALSA: Warn when control names are truncated
ALSA: intel8x0 - add Dell Optiplex GX620 (AD1981B) to AC97 clock whitelist
ALSA: hda - Fix SPDIF mute on IDT/STAC codecs
ALSA: hda: Add HDA vendor ID for Wolfson Microelectronics
ALSA: hda - Add another HP model for AD1884A
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Fix compile error below:
LD drivers/spi/built-in.o
CC [M] drivers/spi/spi_gpio.o
In file included from drivers/spi/spi_gpio.c:26:
include/linux/spi/spi_bitbang.h:23: error: field `work' has incomplete type
make[2]: *** [drivers/spi/spi_gpio.o] Error 1
make[1]: *** [drivers/spi] Error 2
make: *** [drivers] Error 2
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Junjiro R. Okajima reported a problem where knfsd crashes if you are
using it to export shmemfs objects and run strict overcommit. In this
situation the current->mm based modifier to the overcommit goes through a
NULL pointer.
We could simply check for NULL and skip the modifier but we've caught
other real bugs in the past from mm being NULL here - cases where we did
need a valid mm set up (eg the exec bug about a year ago).
To preserve the checks and get the logic we want shuffle the checking
around and add a new helper to the vm_ security wrappers
Also fix a current->mm reference in nommu that should use the passed mm
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix build]
Reported-by: Junjiro R. Okajima <hooanon05@yahoo.co.jp>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Put the kernel-doc for might_sleep() _immediately_ before the macro
(no intervening lines). Otherwise kernel-doc complains like so:
Warning(linux-2.6.27-rc3-git2//include/linux/kernel.h:129): No description found for parameter 'file'
Warning(linux-2.6.27-rc3-git2//include/linux/kernel.h:129): No description found for parameter 'line'
because kernel-doc is looking at the wrong function prototype (i.e.,
__might_sleep). [Yes, I have a todo note to myself to check/warn for that
inconsistency in scripts/kernel-doc.]
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Nothing uses prepare_write or commit_write. Remove them from the tree
completely.
[akpm@linux-foundation.org: schedule simple_prepare_write() for unexporting]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- remove 'private' field from struct subsys
- remove cgroup_init_smp()
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Don't duplicate the implementation of thaw_process().
[akpm@linux-foundation.org: make __thaw_process() static]
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Acked-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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By default, non-privileged tasks can only mlock() a small amount of
memory to avoid a DoS attack by ordinary users. The Linux kernel
defaulted to 32k (on a 4k page size system) to accommodate the needs of
gpg.
However, newer gpg2 needs 64k in various circumstances and otherwise
fails miserably, see bnc#329675.
Change the default to 64k, and make it more agnostic to PAGE_SIZE.
Signed-off-by: Kurt Garloff <garloff@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When ASoC was converted to support full int width masks SOC_SINGLE_VALUE()
omitted the assignment of rshift, causing the control operatins to report
some mono controls as stereo. This happened to work some of the time due
to a confusion between shift and min in snd_soc_info_volsw().
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add rodata equivalents for assembly use, and fix the section attributes
used by __REFCONST.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Change all users of header files to correct path.
Remove some unneeded headers for arch-v32.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
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struct hid_device_id contains hidden padding which is bad for cross
compiling. Make the padding explicit and consistent across
architectures.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
ftrace: fix current_tracer error return
tracing: fix a build error on alpha
ftrace: use a real variable for ftrace_nop in x86
tracing/ftrace: make boot tracer select the sched_switch tracer
tracepoint: check if the probe has been registered
asm-generic: define DIE_OOPS in asm-generic
trace: fix printk warning for u64
ftrace: warning in kernel/trace/ftrace.c
ftrace: fix build failure
ftrace, powerpc, sparc64, x86: remove notrace from arch ftrace file
ftrace: remove ftrace hash
ftrace: remove mcount set
ftrace: remove daemon
ftrace: disable dynamic ftrace for all archs that use daemon
ftrace: add ftrace warn on to disable ftrace
ftrace: only have ftrace_kill atomic
ftrace: use probe_kernel
ftrace: comment arch ftrace code
ftrace: return error on failed modified text.
ftrace: dynamic ftrace process only text section
...
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* 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
KVM: ia64: Makefile fix for forcing to re-generate asm-offsets.h
KVM: Future-proof device assignment ABI
KVM: ia64: Fix halt emulation logic
KVM: Fix guest shared interrupt with in-kernel irqchip
KVM: MMU: sync root on paravirt TLB flush
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* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: fix documentation reference for sched_min_granularity_ns
sched: virtual time buddy preemption
sched: re-instate vruntime based wakeup preemption
sched: weaken sync hint
sched: more accurate min_vruntime accounting
sched: fix a find_busiest_group buglet
sched: add CONFIG_SMP consistency
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Reserve some space so we can add more data.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Every call of kvm_set_irq() should offer an irq_source_id, which is
allocated by kvm_request_irq_source_id(). Based on irq_source_id, we
identify the irq source and implement logical OR for shared level
interrupts.
The allocated irq_source_id can be freed by kvm_free_irq_source_id().
Currently, we support at most sizeof(unsigned long) different irq sources.
[Amit: - rebase to kvm.git HEAD
- move definition of KVM_USERSPACE_IRQ_SOURCE_ID to common file
- move kvm_request_irq_source_id to the update_irq ioctl]
[Xiantao: - Add kvm/ia64 stuff and make it work for kvm/ia64 guests]
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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Fix mac80211.h kernel-doc: it had some extra parameters that were
no longer valid and incorrect format for a return value in 2 places.
Warning(lin2628-rc2//include/net/mac80211.h:1487): Excess function parameter or struct member 'control' description in 'ieee80211_beacon_get'
Warning(lin2628-rc2//include/net/mac80211.h:1596): Excess function parameter or struct member 'control' description in 'ieee80211_get_buffered_bc'
Warning(lin2628-rc2//include/net/mac80211.h:1632): Excess function parameter or struct member 'rc4key' description in 'ieee80211_get_tkip_key'
Warning(lin2628-rc2//include/net/mac80211.h:1735): Excess function parameter or struct member 'return' description in 'ieee80211_start_tx_ba_session'
Warning(lin2628-rc2//include/net/mac80211.h:1775): Excess function parameter or struct member 'return' description in 'ieee80211_stop_tx_ba_session'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Right now callers have to check whether scsi_host->bqt is already
set up, it's much cleaner to just have scsi_init_shared_tag_map()
does this check on its own.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Usbhid structure is allocated on start invoked only from probe
of some driver. When there is no driver, the structure is null
and causes null-dereference oopses.
Fix it by allocating the structure on probe and disconnect of
the device itself. Also make sure we won't race between start
and resume or stop and suspend respectively.
References: http://bugzilla.kernel.org/show_bug.cgi?id=11827
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Andreas Schwab <schwab@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Impact: add (default-off) dump-trace-on-oops flag
Currently, ftrace is set up to dump its contents to the console if the
kernel panics or oops. This can be annoying if you have trace data in
the buffers and you experience an oops, but the trace data is old or
static.
Usually when you want ftrace to dump its contents is when you are debugging
your system and you have set up ftrace to trace the events leading to
an oops.
This patch adds a control variable called "ftrace_dump_on_oops" that will
enable the ftrace dump to console on oops. This variable is default off
but a developer can enable it either through the kernel command line
by adding "ftrace_dump_on_oops" or at run time by setting (or disabling)
/proc/sys/kernel/ftrace_dump_on_oops.
v2:
Replaced /** with /* as Randy explained that kernel-doc does
not yet handle variables.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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marker_probe_cb_noarg() should not be seen by outer code.
this patch remove it.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: build fix
DIE_OOPS is now used in the generic trace handling code so it needs to
be defined for all architectures. Define it in asm-generic so that it's
available to all by default and doesn't cause build errors for
architectures that rely on the generic implementation.
Signed-off-by: Jonas Bonn <jonas.bonn@gmail.com>
Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This fixes a potential error packet loop.
Signed-off-by: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This fixes an OOPS in hard_header if a Phonet address is assigned to a
non-Phonet network interface.
Signed-off-by: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* 'for-linus' of git://neil.brown.name/md:
md: allow extended partitions on md devices.
md: use sysfs_notify_dirent to notify changes to md/dev-xxx/state
md: use sysfs_notify_dirent to notify changes to md/array_state
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: Add support for Sony Vaio VGX-TP1E
HID: fix lock imbalance in hiddev
HID: fix lock imbalance in hidraw
HID: fix hidbus/appletouch device binding regression
HID: add hid_type to general hid struct
HID: quirk for OLED devices present in ASUS G50/G70/G71
HID: Remove "default m" for Thrustmaster and Zeroplus
HID: fix hidraw_exit section mismatch
HID: add support for another Gyration remote control
Revert "HID: Invert HWHEEL mappings for some Logitech mice"
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Based on input from Andi Kleen:
share the platform detection code with ioat_dma and disable the channel in
dma engine only for specific platforms.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Frederic Weisbecker
Ingo Molnar
Lai Jiangshan
Linus Torvalds
Jeff Garzik
Steven Rostedt
Alexey Dobriyan
Randy Dunlap
David S. Miller
Jens Axboe
Trent Piepho
Fernando Luis Vazquez Cao
Alan Cox
Nick Piggin
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