01 Aug, 2006
30 commits
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Update hotplug cpu documentation to clearly state when to use
register_cpu_notifier() and register_hotcpu_notifier.Signed-off-by: Chandra Seetharaman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Few of the callback functions and notifier blocks that are associated with cpu
notifications incorrectly have __devinit and __devinitdata. They should be
__cpuinit and __cpuinitdata instead.It makes no functional difference but wastes text area when CONFIG_HOTPLUG is
enabled and CONFIG_HOTPLUG_CPU is not.This patch fixes all those instances.
Signed-off-by: Chandra Seetharaman
Cc: Ashok Raj
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch is part of an effort to unify the panic_on_oops behaviour across
all architectures that implement it.It was pointed out to me by Andi Kleen that if an oops has occured in
interrupt context, then calling sleep() in the oops path will only cause a
panic, and that it would be really better for it not to be in the path at
all.This patch removes the ssleep() call and reworks the console message
accordinly. I have a slght concern that the resulting console message is
too long, feedback welcome.For powerpc it also unifies the 32bit and 64bit behaviour.
Fror x86_64, this patch only updates the console message, as ssleep() is
already not present.Signed-off-by: Horms
Acked-by: Paul Mackerras
Cc: Russell King
Cc: "Luck, Tony"
Cc: Andi Kleen
Cc: Chris Zankel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reduce the likelihood of someone accidentally introducing namespace
collisions.Signed-off-by: Yoichi Yuasa
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When reading from nbd device, we need to receive all the data after
receiving reply packet from the server - otherwise such request will never
be ended.If socket is closed right after accepting reply control packet and in the
middle of waiting for read data, nbd_read_stat() returns NULL and
nbd_end_request() is not called.This patch fixes it.
Signed-off-by: Michal Feix
Acked-by: Paul Clements
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We should check magic sequence in reply packet before trying to find
request with it's request handle. This also solves the problem with
"Unexpected reply" message beeing logged, when packet with invalid magic is
received.Signed-off-by: Michal Feix
Acked-by: Paul Clements
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The pkt_*_dev functions operate on not-this-blockdevice, and that is
sufficiently checked at setup time. As a result there is a natural
hierarchy, which needs nesting annotationsSigned-off-by: Arjan van de Ven
Cc: Peter Osterlund
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When resuming from suspend-to-RAM, the NMI watchdog detects a lockup in
ide_wait_not_busy. Here's a screenshot of the trace taken by a digital
camera: http://www.uamt.feec.vutbr.cz/rizeni/pom/DSC03510-2.JPGLet's touch the NMI watchdog in ide_wait_not_busy. The system then resumes
correctly from STR.[akpm@osdl.org: modular build fix]
Signed-off-by: Michal Schmidt
Acked-by: Alan Cox
Cc: Bartlomiej Zolnierkiewicz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We can immediately bail from invalidate_bdev() if the blockdev has no
pagecache.This solves the huge IPI storms which hald is causing on the big ia64
machines when it polls CDROM drives.Acked-by: Jes Sorensen
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Miles Bader
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Miles Bader
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kprobe inserts breakpoint instruction in probepoint and then jumps to
instruction slot when breakpoint is hit, the instruction slot icache must
be consistent with dcache. Here is the patch which invalidates instruction
slot icache area.Without this patch, in some machines there will be fault when executing
instruction slot where icache content is inconsistent with dcache.Signed-off-by: bibo,mao
Acked-by: "Luck, Tony"
Acked-by: Keshavamurthy Anil S
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove a
duplicate of the macro. Also remove some trailing whitespaces and needless
braces.Signed-off-by: Tobias Klauser
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is described as being experimental, but doesn't actually depend on
EXPERIMENTAL. Change the text.Signed-off-by: Arthur Othieno
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The kprobe-booster's safety check against preemption does not work well
now, because the preemption count has been modified by read_rcu_lock() in
atomic_notifier_call_chain() before we check it. So, I'd like to prevent
boosting kprobe temporarily if the kernel is preemptable.Now we are searching for the good solution.
Signed-off-by: Masami Hiramatsu
Cc: Ananth N Mavinakayanahalli
Cc: Prasanna S Panchamukhi
Cc: Anil S Keshavamurthy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
One of my original comments in machine_kexec was unclear
and this should fix it.Signed-off-by: Eric W. Biederman
Cc: Andi Kleen
Acked-by: Horms
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Move the tsc synchronisation variables into a struct, mark it __initdata
- local `realdelta' wants to be 64-bit
- Print the skew for negative skews, as well as for positive ones
- remove dead code
Cc: john stultz
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Initializes newcontext sooner to allow for its destruction in all cases.
Signed-off-by: Venkat Yekkirala
Signed-off-by: Stephen Smalley
Acked-by: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch fixes a memory leak when a policydb structure is destroyed.
Signed-off-by: Darrel Goeddel
Signed-off-by: Stephen Smalley
Acked-by: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A recent commit (7fc90ec93a5eb71f4b08403baf5ba7176b3ec6b1) moved the
call to nfsd_setuser out of the 'find a dentry for a filehandle' branch
of fh_verify so that it would always be called.This had the unfortunately side-effect of moving *after* the call to
decode_fh, so the prober fsuid was not set when nfsd_acceptable was called,
the 'permission' check did the wrong thing.This patch moves the nfsd_setuser call back where it was, and add as call
in the other branch of the if.Cc: "J. Bruce Fields"
Signed-off-by: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
mce_disabled cannot be __initdata - we access it during APM resume.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The recent zlib update (commit 4f3865fb57a04db7cca068fed1c15badc064a302)
broke ppc32 zImage decompression as it tries to decompress to address zero
and the updated zlib_inflate checks that strm->next_out isn't a null
pointer.This little patch fixes it.
[rpurdie@rpsys.net: add comment]
Signed-off-by: Peter Korsgaard
Acked-by: Tom Rini
Signed-off-by: Richard Purdie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Enable delay accounting by default so that feature gets coverage testing
without requiring special measures.Earlier, it was off by default and had to be enabled via a boot time param.
This patch reverses the default behaviour to improve coverage testing. It
can be removed late in the kernel development cycle if its believed users
shouldn't have to incur any cost if they don't want delay accounting. Or
it can be retained forever if the utility of the stats is deemed common
enough to warrant keeping the feature on.Signed-off-by: Shailabh Nagar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a missing freeing of skb in the case there are no listeners at all.
Also remove the returning of error values by the function as it is unused
by the sole caller.Signed-off-by: Shailabh Nagar
Signed-off-by: Chandra Seetharaman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Complete the separation of delay accounting and taskstats by ignoring the
return value of delay accounting functions that fill in parts of taskstats
before it is sent out (either in response to a command or as part of a task
exit).Also make delayacct_add_tsk return silently when delay accounting is turned
off rather than treat it as an error.Signed-off-by: Shailabh Nagar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
IRQs need refcounting and a state flag to track whether the the IRQ should
be enabled or disabled as a "normal IRQ" source after a series of calls to
{en,dis}able_irq(). For shared IRQs, the IRQ must be enabled so long as at
least one driver needs it active.Likewise, IRQs need the same support to track whether the IRQ should be
enabled or disabled as a "wakeup event" source after a series of calls to
{en,dis}able_irq_wake(). For shared IRQs, the IRQ must be enabled as a
wakeup source during sleep so long as at least one driver needs it. But
right now they _don't have_ that refcounting ... which means sharing a
wakeup-capable IRQ can't work correctly in some configurations.This patch adds the refcount and flag mechanisms to set_irq_wake() -- which
is what {en,dis}able_irq_wake() call -- and minimal documentation of what
the irq wake mechanism does.Drivers relying on the older (broken) "toggle" semantics will trigger a
warning; that'll be a handful of drivers on ARM systems.Signed-off-by: David Brownell
Acked-by: Ingo Molnar
Acked-by: Thomas Gleixner
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A static struct mustn't be exported.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Events sent by Process Events Connector from a 64-bit kernel are not binary
compatible with a 32-bit userspace program because the "timestamp" field
(struct timespec) is not arch independent. This affects the fields that
follow "timestamp" as they will be be off by 8 bytes.This is a problem for 32-bit userspace programs running with 64-bit kernels
on ppc64, s390, x86-64.. any "biarch" system.Matt had submitted a different solution to lkml as an RFC earlier. We have
since switched to a solution recommended by Evgeniy Polyakov.This patch fixes the problem by changing the timestamp to be a __u64, which
stores the number of nanoseconds.Tested on a x86_64 system with both 32 bit application and 64 bit
application and on a i386 system.Signed-off-by: Chandra Seetharaman
Signed-off-by: Matt Helsley
Cc: Evgeniy Polyakov
Cc: Guillaume Thouvenin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The inode number out of an NFS file handle gets passed eventually to
ext3_get_inode_block() without any checking. If ext3_get_inode_block()
allows it to trigger an error, then bad filehandles can have unpleasant
effect - ext3_error() will usually cause a forced read-only remount, or a
panic if `errors=panic' was used.So remove the call to ext3_error there and put a matching check in
ext3/namei.c where inode numbers are read off storage.[akpm@osdl.org: fix off-by-one error]
Signed-off-by: Neil Brown
Signed-off-by: Jan Kara
Cc: Marcel Holtmann
Cc:
Cc: "Stephen C. Tweedie"
Cc: Eric Sandeen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use the correct groups while initializing sched groups power for
allnodes_domain. This fixes the crash observed while creating exclusive
cpusets.Signed-off-by: Suresh Siddha
Reported-and-tested-by: Paul Jackson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Jul, 2006
10 commits
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* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 3734/1: Fix the unused variable warning in __iounmap()
[ARM] 3737/1: Export ARM copy/clear_user_page symbols
[ARM] 3736/1: xscale: don't mis-report 80219 as an iop32x
[ARM] 3733/2: S3C24XX: Remove old IDE registers in Anubis
[ARM] 3732/1: S3C24XX: tidy syntax in osiris and anubis machines
[ARM] Fix SMP booting
[ARM] 3731/1: Allow IRQ definitions of IQ80331 and IQ80332 to co-exist
[ARM] 3730/1: ep93xx: enable usb ohci driver in the defconfig
[ARM] Fix cats build -
For some reason it triggers always with NFS root and spams the kernel
logs of my nfs root boxes a lot.Signed-off-by: Andi Kleen
Acked-by: Trond Myklebust
Signed-off-by: Linus Torvalds -
I didn't test all compilation combinations. Shame on me.
And fix a missing option in the boot option following x86-64 (Jan Beulich)Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
It was broken before. But having it is important as possible hardware
bug workaround.And previously there was no way to force swiotlb if there is another IOMMU.
Side effect is that iommu=force won't force swiotlb anymore even if there
isn't another IOMMU.Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
As Travis Betak points out it accesses the wrong northbridge subfunction
now. Switch back to the old code.Cc: "Travis Betak"
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
Calgary hits a NULL pointer dereference when booting in a multi-chassis
NUMA system. See Redhat bugzilla number 198498, found by Konrad
Rzeszutek (konradr@redhat.com).There are many issues that had to be resolved to fix this problem.
Firstly when I originally wrote the code to handle NUMA systems, I
had a large misunderstanding that was not corrected until now. That was
that I thought the "number of nodes online" referred to number of
physical systems connected. So that if NUMA was disabled, there
would only be 1 node and it would only show that node's PCI bus.
In reality if NUMA is disabled, the system displays all of the
connected chassis as one node but is only ignorant of the delays
in accessing main memory. Therefore, references to num_online_nodes()
and MAX_NUMNODES are incorrect and need to be set to the maximum
number of nodes that can be accessed (which are 8). I created a
variable, MAX_NUM_CHASSIS, and set it to 8 to fix this.Secondly, when walking the PCI in detect_calgary, the code only
checked the first "slot" when looking to see if a device is present.
This will work for most cases, but unfortunately it isn't always the
case. In the NUMA MXE drawers, there are USB devices present on the
3rd slot (with slot 1 being empty). So, to work around this, all
slots (up to 8) are scanned to see if there are any devices present.Lastly, the bus is being enumerated on large systems in a different
way the we originally thought. This throws the ugly logic we had
out the window. To more elegantly handle this, I reorganized the
kva array to be sparse (which removed the need to have any bus number
to kva slot logic in tce.c) and created a secondary space array to
contain the bus number to phb mapping.With these changes Calgary boots on an x460 with 4 nodes with and
without NUMA enabled.Signed-off-by: Jon Mason
Signed-off-by: Muli Ben-Yehuda
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
Fixed off-by-one error in detect_calgary and calgary_init which will
cause arrays to overflow. Also, removed impossible to hit BUG_ON.Signed-off-by: Jon Mason
Signed-off-by: Muli Ben-Yehuda
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
On Intel systems generally the TSC stops in C3 or deeper,
so don't use it there. Follows similar logic on i386.This should fix problems on Meroms.
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds -
Update defconfig
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds
