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Heiko Carstens [Wed, 1 Feb 2006 11:06:37 +0000 (03:06 -0800)]
[PATCH] s390: New default configuration
New default configuration.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Horst Hummel [Wed, 1 Feb 2006 11:06:37 +0000 (03:06 -0800)]
[PATCH] s390: dasd wait for clear i/o interrupt
The sleep_on function clears a running cqr without waiting for the related
interrupt. This can lead to a panic at the time the interrupt is processed
because the related memory might already be freed. Wait for clear-interrupt
and de-queue cqr prior to return.
Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Horst Hummel [Wed, 1 Feb 2006 11:06:36 +0000 (03:06 -0800)]
[PATCH] s390: dasd open counter
The open_count is increased for every opener, that includes the blkdev_get in
dasd_scan_partitions. This tampers the open_count in BIODASDINFO. Hide the
internal open from user-space.
Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Peter Oberparleiter [Wed, 1 Feb 2006 11:06:35 +0000 (03:06 -0800)]
[PATCH] s390: ccw_device_probe_console return value
The return code of ccw_device_probe_console() is not properly handled. It
should only return a valid ccw device pointer or a error value converted by
ERR_PTR. Fix the console driver code to check with IS_ERR instead against
NULL.
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jan Glauber [Wed, 1 Feb 2006 11:06:34 +0000 (03:06 -0800)]
[PATCH] s390: hangcheck timer support
Remove useless s390 define from hangcheck-timer, remove wrong definition of a
TOD second and other s390 ifdefs. Use monotonic_clock instead.
Add hangcheck-timer option, copied from drivers/char/Kconfig. This is ugly
but unless we have a big Kconfig cleanup we cannot include
drivers/char/Kconfig...
Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jan Glauber [Wed, 1 Feb 2006 11:06:33 +0000 (03:06 -0800)]
[PATCH] s390: monotonic_clock interface
Add monotonic_clock interface, used by the hangcheck-timer. On s390 this is
the same as sched_clock().
Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jan Glauber [Wed, 1 Feb 2006 11:06:32 +0000 (03:06 -0800)]
[PATCH] s390: overflow in sched_clock
The least significant bit of the TOD clock value returned by get_clock
is the 4096th part of a microsecond. To get to nanoseconds the value
needs to be divided by 4096 and multiplied with 1000.
The current method multiplies first and then shifts the value to make the
result as precise as possible. The disadvantage is that the multiplication
with 1000 will overflow shortly after 52 days. sched_clock is used by the
scheduler for time stamp deltas, if an overflow occurs between two time stamps
the scheduler will get confused.
With the patch the problem occurs only after approx. one year, so the chance
to run into this overflow is extremly low.
Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Heiko Carstens [Wed, 1 Feb 2006 11:06:31 +0000 (03:06 -0800)]
[PATCH] s390: Remove CVS generated information
- Remove all CVS generated information like e.g. revision IDs from
drivers/s390 and include/asm-s390 (none present in arch/s390).
- Add newline at end of arch/s390/lib/Makefile to avoid diff message.
Acked-by: Andreas Herrmann <aherrman@de.ibm.com>
Acked-by: Frank Pavlic <pavlic@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:30 +0000 (03:06 -0800)]
[PATCH] xtensa: add asm/futex.h
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:29 +0000 (03:06 -0800)]
[PATCH] uml: avoid "CONFIG_NR_CPUS undeclared" bogus error messages
Olaf Hering <olh@suse.de>
Olaf reported UML doesn't build for him with a clear analisys of what happened
- we're using NR_CPUS in files linked against glibc headers. Seems like it
defines CONFIG_SMP but not CONFIG_NR_CPUS, so we get CONFIG_NR_CPUS
undeclared.
The fix is to move the declaration away from that header file and move it in
asm-um headers, and to add that header where needed.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:29 +0000 (03:06 -0800)]
[PATCH] uml: some harmless sparse warning fixes
Fix some simple sparse warnings - a lot more staticness and a misplaced
__user.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:28 +0000 (03:06 -0800)]
[PATCH] uml: skas0-hold-own-ldt fixups for x86-64
In a recent fixup i386 code was copied raw to x86_64 subarch to make it
compile again.
Here there are some little fixups and resyncs needed for it (mainly for
cleanliness sake) - I did an audit and found the rest of the code to be safe.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:27 +0000 (03:06 -0800)]
[PATCH] uml: TT - SYSCALL_DEBUG - fix buglet introduced in cleanup
Fixes a bug introduced in commit
e32dacb9f481fd6decb41adb28e720c923d34f54 -
index is initialized based on syscall before syscall is calculated.
I'm bothering with this mainly because it gives a correct warning when the
config option is enabled, even if the code is for a almost unused debugging
option.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:26 +0000 (03:06 -0800)]
[PATCH] uml: fix "apples/bananas" typo
Fix stupid typo.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:25 +0000 (03:06 -0800)]
[PATCH] uml: fix hugest stack users
The C99 initialization, with GCC's bad handling, for 6K wide structs (which
_aren't_ on the stack), is causing GCC to use 12K for these silly procs with 3
vars. Workaround this.
Note that .name = { '\0' } translates to memset(->name, 0, '->name' size) - I verified
this with GCC's docs and a testprogram.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:25 +0000 (03:06 -0800)]
[PATCH] uml: comments about libc-conflict guards
While fixing myself the mktime conflict (which someone already merged), I also
improved a few comments. Merge them up.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Wed, 1 Feb 2006 11:06:24 +0000 (03:06 -0800)]
[PATCH] uml: typo fixup
Trivial innocent cosmetical fixup.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Wed, 1 Feb 2006 11:06:23 +0000 (03:06 -0800)]
[PATCH] uml: fix some typos
Fix a couple of typos.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Wed, 1 Feb 2006 11:06:22 +0000 (03:06 -0800)]
[PATCH] uml: add a build dependency
kern_constants.h now depends on arch/um/include to make sure it exists
before we try to create symlinks in it.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:22 +0000 (03:06 -0800)]
[PATCH] arm26: select BLK_DEV_FD only on A5K
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:21 +0000 (03:06 -0800)]
[PATCH] arm26: add __kernel_old_dev_t for nfsd
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:20 +0000 (03:06 -0800)]
[PATCH] arm26: drop first arg of prepare_arch_switch, finish_arch_switch
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:20 +0000 (03:06 -0800)]
[PATCH] arm26: drop local task_running copy
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:19 +0000 (03:06 -0800)]
[PATCH] arm26: fixup asm statement in kernel/fiq.c
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:18 +0000 (03:06 -0800)]
[PATCH] arm26: fixup get_signal_to_deliver call
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:17 +0000 (03:06 -0800)]
[PATCH] arm26: select system type via "choice"
Choosing ARCH_ARC and ARCH_A5K together causes redefining and errors
here and there.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:17 +0000 (03:06 -0800)]
[PATCH] arm26: remove irq_exit() from hardirq.h
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:16 +0000 (03:06 -0800)]
[PATCH] arm26: fix warnings about NR_IRQS being not defined
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:14 +0000 (03:06 -0800)]
[PATCH] arm26: fix find_first_zero_bit related warnings
include/linux/nodemask.h: In function `__first_unset_node':
include/linux/nodemask.h:254: warning: passing arg 1 of `_find_first_zero_bit_le' discards qualifiers from pointer target type
fs/minix/bitmap.c: In function `minix_new_block':
fs/minix/bitmap.c:89: warning: passing arg 1 of `_find_first_zero_bit_le' from incompatible pointer type
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Eric Sesterhenn [Wed, 1 Feb 2006 11:06:13 +0000 (03:06 -0800)]
[PATCH] alpha show_interrups() trashes argument
This is a bug found by cpminer. The show_interrupts function reuses i as a
for loop counter, and therefore trashes its contents, which are needed
later.
(akpm: rename local `i' to `irq', use for_each_inline_cpu())
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Eric W. Biederman [Wed, 1 Feb 2006 11:06:12 +0000 (03:06 -0800)]
[PATCH] alpha: Fix getxpid on alpha so it works for threads
While looking in the code I discovered that alpha has fallen behind because
it doesn't use sys_getppid. The problem is that it doesn't follow the task
struct to the task_group_leader.
Acked-by: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Mark Lord [Wed, 1 Feb 2006 11:06:11 +0000 (03:06 -0800)]
[PATCH] VMSPLIT config options
Enable selection of different user/kernel VM splits for i386, including an
optimized mode for 1GB physical RAM, which gives the kernel a direct (non
HIGHMEM) mapping to the entire 1GB rather than just the first 896MB.
There is a similarly a similarly optimized mode for machines with exactly 2GB
of physical RAM.
This can speed up the kernel by avoiding having to create/destroy temporary
HIGHMEM mappings, and by not having to include HIGHMEM support at all on such
machines. The flip side is that there's less virtual addressing left for
userspace in these alternatives, and some binary-only kernel modules may
misbehave unless rebuilt with the same VMSPLIT option as the main kernel
image.
Original idea/patch from Jens Axboe, modified based on suggestions from Linus
et al.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:06:09 +0000 (03:06 -0800)]
[PATCH] arch/sh64/kernel/time.c: add module.h
It uses EXPORT_SYMBOL.
arch/sh64/kernel/time.c:254: warning: type defaults to `int' in declaration of `EXPORT_SYMBOL'
arch/sh64/kernel/time.c:254: warning: parameter names (without types) in function declaration
arch/sh64/kernel/time.c:254: warning: data definition has no type or storage class
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:09 +0000 (03:06 -0800)]
[PATCH] sh/sh64: Fix bogus TIOCGICOUNT definitions
As reported by Russell King, sh and sh64 currently have bogus definitions for
TIOCGICOUNT, particularly referencing a kernel only structure. Switch to
using a sensible ioctl value.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:08 +0000 (03:06 -0800)]
[PATCH] sh: machine_halt()/machine_power_off() cleanups
machine_halt() managed to trigger the soft lockup detection due to not
disabling interrupts before going to sleep, so correct that.
machine_power_off() should be using pm_power_off, which lets us drop the
board-specific hacks from here.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:07 +0000 (03:06 -0800)]
[PATCH] sh: Add missing timers directory rule to build
This should have been part of the timer framework support that was merged
earlier, but looks to have been accidentally omitted.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:06 +0000 (03:06 -0800)]
[PATCH] sh: sh-sci clock framework updates
A couple of updates for the sh-sci serial driver:
- Update for clock framework on sh.
- Fix a compile error introduced by some h8300 changes.
- Add SH7770/SH7780 subtype support.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:05 +0000 (03:06 -0800)]
[PATCH] sh: convert voyagergx to platform device, drop sh-bus
Trivial patch updating the voyagergx cchip code to reference a platform device
instead, now that the dma mask is taken care of. Given this, there's no
longer any reason to drag around the SH-bus code, so kill that off entirely.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:04 +0000 (03:06 -0800)]
[PATCH] sh: drop maskpos from make_ipr_irq(), remove duplicate irq definitions
Clean up some of the subtype IRQ definitions for IPR IRQ, and consolidate the
make_ipr_irq() definitions by dropping maskpos. SH-4A was the only thing
interested in the maskpos, and this should be handled through INTC2 rather
than IPR.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:03 +0000 (03:06 -0800)]
[PATCH] sh: unknown mach-type updates
Trivial cleanup of the unknown machine type for some of the recent machvec
changes.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:02 +0000 (03:06 -0800)]
[PATCH] sh: Cleanup struct sh_cpuinfo for clock framework changes
Now that the clock framework changes have been integrated, the manual clock
accounting that was done in sh_cpuinfo can be dropped.
Also correct a bug with running past the end of the CPU flags when there's a
mismatch between the added flags and printed ones.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:01 +0000 (03:06 -0800)]
[PATCH] sh: Move TRA/EXPEVT/INTEVT definitions for reuse
Currently entry.S is home to these definitions, so we move them somewhere more
sensible. IPR IRQ handling depends on being to read from INTEVT.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:06:01 +0000 (03:06 -0800)]
[PATCH] sh: Make peripheral clock frequency setting mandatory
Pretty much every subtype does this now anyways, and as we depend on it in a
few places being set to something sensible quite early on, it's better for a
new subtype to simply set a sensible default.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paul Mundt [Wed, 1 Feb 2006 11:05:59 +0000 (03:05 -0800)]
[PATCH] sh: SH4-202 microdev updates
A few trivial updates for the microdev board support code:
- Update for __IO_PREFIX changes.
- Consolidate headers into a single microdev.h.
- Update the microdev_defconfig.
- Add init values for the S1D13806 used by s1d13xxxfb.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Heiko Carstens [Wed, 1 Feb 2006 11:05:58 +0000 (03:05 -0800)]
[PATCH] powerpc: Fix sigmask handling in sys_sigsuspend.
Better save the sigmask instead of throwing it away so it can be restored.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Olaf Hering [Wed, 1 Feb 2006 11:05:58 +0000 (03:05 -0800)]
[PATCH] MODALIAS= for macio
Prodive a MODALIAS= enviroment variable for devices on the mac-io bus.
Change the buffer length counter to not waste memory by advancing the
pointer for the next string too far. Tested on an ibook1 with modular
pmac_zilog.
Signed-off-by: Olaf Hering <olh@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Albert Herranz [Wed, 1 Feb 2006 11:05:57 +0000 (03:05 -0800)]
[PATCH] powerpc: fix for kexec ppc32
- kexec.h is included from assembly code, thus C code must be properly
protected.
- (embedded) ppc32 systems use machine_kexec_simple whose declaration
vanished during a recent powerpc merge change.
Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Cc: <fastboot@osdl.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Stephen Smalley [Wed, 1 Feb 2006 11:05:56 +0000 (03:05 -0800)]
[PATCH] selinux: remove security struct magic number fields and tests
Remove the SELinux security structure magic number fields and tests, along
with some unnecessary tests for NULL security pointers. These fields and
tests are leftovers from the early attempts to support SELinux as a
loadable module during LSM development.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Stephen Smalley [Wed, 1 Feb 2006 11:05:55 +0000 (03:05 -0800)]
[PATCH] selinux: change file_alloc_security to use GFP_KERNEL
This patch changes the SELinux file_alloc_security function to use
GFP_KERNEL rather than GFP_ATOMIC; the use of GFP_ATOMIC appears to be a
remnant of when this function was being called with the files_lock spinlock
held, and is no longer necessary. Please apply.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Stephen Smalley [Wed, 1 Feb 2006 11:05:54 +0000 (03:05 -0800)]
[PATCH] selinux: fix and cleanup mprotect checks
Fix the SELinux mprotect checks on executable mappings so that they are not
re-applied when the mapping is already executable as well as cleaning up
the code. This avoids a situation where e.g. an application is prevented
from removing PROT_WRITE on an already executable mapping previously
authorized via execmem permission due to an execmod denial.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Randy Dunlap [Wed, 1 Feb 2006 11:05:53 +0000 (03:05 -0800)]
[PATCH] slab: fix sparse warning
mm/slab.c:1522:13: error: incompatible types for operation (&)
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Randy.Dunlap [Wed, 1 Feb 2006 11:05:52 +0000 (03:05 -0800)]
[PATCH] mm/slab: add kernel-doc for one function
Fix kernel-doc for calculate_slab_order().
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pekka Enberg [Wed, 1 Feb 2006 11:05:52 +0000 (03:05 -0800)]
[PATCH] slab: fix kzalloc and kstrdup caller report for CONFIG_DEBUG_SLAB
Fix kzalloc() and kstrdup() caller report for CONFIG_DEBUG_SLAB. We must
pass the caller to __cache_alloc() instead of directly doing
__builtin_return_address(0) there; otherwise kzalloc() and kstrdup() are
reported as the allocation site instead of the real one.
Thanks to Valdis Kletnieks for reporting the problem and Steven Rostedt for
the original idea.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Wed, 1 Feb 2006 11:05:51 +0000 (03:05 -0800)]
[PATCH] dump_stack() in oom handler
Sometimes it's nice to know who's calling.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pekka Enberg [Wed, 1 Feb 2006 11:05:50 +0000 (03:05 -0800)]
[PATCH] slab: replace kmem_cache_t with struct kmem_cache
Replace uses of kmem_cache_t with proper struct kmem_cache in mm/slab.c.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pekka Enberg [Wed, 1 Feb 2006 11:05:49 +0000 (03:05 -0800)]
[PATCH] slab: rename ac_data to cpu_cache_get
Rename the ac_data() function to more descriptive cpu_cache_get().
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pekka Enberg [Wed, 1 Feb 2006 11:05:49 +0000 (03:05 -0800)]
[PATCH] slab: extract virt_to_{cache|slab}
Introduce virt_to_cache() and virt_to_slab() functions to reduce duplicate
code and introduce a proper abstraction should we want to support other kind
of mapping for address to slab and cache (eg. for vmalloc() or I/O memory).
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pekka Enberg [Wed, 1 Feb 2006 11:05:48 +0000 (03:05 -0800)]
[PATCH] slab: reduce inlining
From: Manfred Spraul <manfred@colorfullife.com>
Reduce the amount of inline functions in slab to the functions that
are used in the hot path:
- no inline for debug functions
- no __always_inline, inline is already __always_inline
- remove inline from a few numa support functions.
Before:
text data bss dec hex filename
13588 752 48 14388 3834 mm/slab.o (defconfig)
16671 2492 48 19211 4b0b mm/slab.o (numa)
After:
text data bss dec hex filename
13366 752 48 14166 3756 mm/slab.o (defconfig)
16230 2492 48 18770 4952 mm/slab.o (numa)
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Matthew Dobson [Wed, 1 Feb 2006 11:05:47 +0000 (03:05 -0800)]
[PATCH] slab: extract slab_{put|get}_obj
Create two helper functions slab_get_obj() and slab_put_obj() to replace
duplicated code in mm/slab.c
Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Matthew Dobson [Wed, 1 Feb 2006 11:05:46 +0000 (03:05 -0800)]
[PATCH] slab: extract slab_destroy_objs()
Create a helper function, slab_destroy_objs() which called from
slab_destroy(). This makes slab_destroy() smaller and more readable, and
moves ifdefs outside the function body.
Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Steven Rostedt [Wed, 1 Feb 2006 11:05:45 +0000 (03:05 -0800)]
[PATCH] slab: cache_estimate cleanup
Clean up cache_estimate() in mm/slab.c and improves the algorithm from O(n) to
O(1). We first calculate the maximum number of objects a slab can hold after
struct slab and kmem_bufctl_t for each object has been given enough space.
After that, to respect alignment rules, we decrease the number of objects if
necessary. As required padding is at most align-1 and memory of obj_size is
at least align, it is always enough to decrease number of objects by one.
The optimization was originally made by Balbir Singh with more improvements
from Steven Rostedt. Manfred Spraul provider further modifications: no loop
at all for the off-slab case and added comments to explain the background.
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Steven Rostedt [Wed, 1 Feb 2006 11:05:44 +0000 (03:05 -0800)]
[PATCH] slab: have index_of bug at compile time
I noticed the code for index_of is a creative way of finding the cache
index using the compiler to optimize to a single hard coded number. But
I couldn't help noticing that it uses two methods to let you know that
someone used it wrong. One is at compile time (the correct way), and
the other is at run time (not good).
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:43 +0000 (03:05 -0800)]
[PATCH] slab: minor cleanup to kmem_cache_alloc_node
Clean up kmem_cache_alloc_node a bit.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Manfred Spraul [Wed, 1 Feb 2006 11:05:42 +0000 (03:05 -0800)]
[PATCH] slab: distinguish between object and buffer size
An object cache has two different object lengths:
- the amount of memory available for the user (object size)
- the amount of memory allocated internally (buffer size)
This patch does some renames to make the code reflect that better.
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:41 +0000 (03:05 -0800)]
[PATCH] Direct Migration V9: Avoid writeback / page_migrate() method
Migrate a page with buffers without requiring writeback
This introduces a new address space operation migratepage() that may be used
by a filesystem to implement its own version of page migration.
A version is provided that migrates buffers attached to pages. Some
filesystems (ext2, ext3, xfs) are modified to utilize this feature.
The swapper address space operation are modified so that a regular
migrate_page() will occur for anonymous pages without writeback (migrate_pages
forces every anonymous page to have a swap entry).
Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:40 +0000 (03:05 -0800)]
[PATCH] Direct Migration V9: upgrade MPOL_MF_MOVE and sys_migrate_pages()
Modify policy layer to support direct page migration
- Add migrate_pages_to() allowing the migration of a list of pages to a a
specified node or to vma with a specific allocation policy in sets of
MIGRATE_CHUNK_SIZE pages
- Modify do_migrate_pages() to do a staged move of pages from the source
nodes to the target nodes.
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:39 +0000 (03:05 -0800)]
[PATCH] Direct Migration V9: remove_from_swap() to remove swap ptes
Add remove_from_swap
remove_from_swap() allows the restoration of the pte entries that existed
before page migration occurred for anonymous pages by walking the reverse
maps. This reduces swap use and establishes regular pte's without the need
for page faults.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:38 +0000 (03:05 -0800)]
[PATCH] Direct Migration V9: migrate_pages() extension
Add direct migration support with fall back to swap.
Direct migration support on top of the swap based page migration facility.
This allows the direct migration of anonymous pages and the migration of file
backed pages by dropping the associated buffers (requires writeout).
Fall back to swap out if necessary.
The patch is based on lots of patches from the hotplug project but the code
was restructured, documented and simplified as much as possible.
Note that an additional patch that defines the migrate_page() method for
filesystems is necessary in order to avoid writeback for anonymous and file
backed pages.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:36 +0000 (03:05 -0800)]
[PATCH] Direct Migration V9: PageSwapCache checks
Check for PageSwapCache after looking up and locking a swap page.
The page migration code may change a swap pte to point to a different page
under lock_page().
If that happens then the vm must retry the lookup operation in the swap space
to find the correct page number. There are a couple of locations in the VM
where a lock_page() is done on a swap page. In these locations we need to
check afterwards if the page was migrated. If the page was migrated then the
old page that was looked up before was freed and no longer has the
PageSwapCache bit set.
Signed-off-by: Hirokazu Takahashi <taka@valinux.co.jp>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:35 +0000 (03:05 -0800)]
[PATCH] Reclaim slab during zone reclaim
If large amounts of zone memory are used by empty slabs then zone_reclaim
becomes uneffective. This patch shakes the slab a bit.
The problem with this patch is that the slab reclaim is not containable to a
zone. Thus slab reclaim may affect the whole system and be extremely slow.
This also means that we cannot determine how many pages were freed in this
zone. Thus we need to go off node for at least one allocation.
The functionality is disabled by default.
We could modify the shrinkers to take a zone parameter but that would be quite
invasive. Better ideas are welcome.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:34 +0000 (03:05 -0800)]
[PATCH] Zone reclaim: Allow modification of zone reclaim behavior
In some situations one may want zone_reclaim to behave differently. For
example a process writing large amounts of memory will spew unto other nodes
to cache the writes if many pages in a zone become dirty. This may impact the
performance of processes running on other nodes.
Allowing writes during reclaim puts a stop to that behavior and throttles the
process by restricting the pages to the local zone.
Similarly one may want to contain processes to local memory by enabling
regular swap behavior during zone_reclaim. Off node memory allocation can
then be controlled through memory policies and cpusets.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:33 +0000 (03:05 -0800)]
[PATCH] zone_reclaim: configurable off node allocation period.
Currently the zone_reclaim code has a fixed window of 30 seconds of off node
allocations should a local zone have no unused pagecache pages left. Reclaim
will be attempted again after this timeout period to avoid repeated useless
scans for memory. This is also useful to established sufficiently large off
node allocation chunks to relieve the local node.
It may be beneficial to adjust that time period for some special situations.
For example if memory use was exceeding node capacity one may want to give up
for longer periods of time. If memory spikes intermittendly then one may want
to shorten the time period to reduce the number of off node allocations.
This patch allows just that....
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:32 +0000 (03:05 -0800)]
[PATCH] zone_reclaim: partial scans instead of full scan
Instead of scanning all the pages in a zone, imitate real swap and scan
only a portion of the pages and gradually scan more if we do not free up
enough pages. This avoids a zone suddenly loosing all unused pagecache
pages (we may after all access some of these again so they deserve another
chance) but it still frees up large chunks of memory if a zone only
contains unused pagecache pages.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:32 +0000 (03:05 -0800)]
[PATCH] zone_reclaim: do not unmap file backed pages
zone_reclaim should leave that to the real swapper. We are only interested
in evicting unmapped pages.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Hugh Dickins [Wed, 1 Feb 2006 11:05:31 +0000 (03:05 -0800)]
[PATCH] mm: hugepage accounting fix
2.6.15's hugepage faulting introduced huge_pages_needed accounting into
hugetlbfs: to count how many pages are already in cache, for spot check on
how far a new mapping may be allowed to extend the file. But it's muddled:
each hugepage found covers HPAGE_SIZE, not PAGE_SIZE. Once pages were
already in cache, it would overshoot, wrap its hugepages count backwards,
and so fail a harmless repeat mapping with -ENOMEM. Fixes the problem
found by Don Dupuis.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-By: Adam Litke <agl@us.ibm.com>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Benjamin LaHaise [Wed, 1 Feb 2006 11:05:30 +0000 (03:05 -0800)]
[PATCH] Use 32 bit division in slab_put_obj()
Improve the performance of slab_put_obj(). Without the cast, gcc considers
ptrdiff_t a 64 bit signed integer and ends up emitting code to use a full
signed 128 bit divide on EM64T, which is substantially slower than a 32 bit
unsigned divide.
I noticed this when looking at the profile of a case where the slab balance
is just on edge and thrashes back and forth freeing a block.
Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:29 +0000 (03:05 -0800)]
[PATCH] zone_reclaim: minor fixes
- If we only reclaim nr_pages then its okay to stay on node.
Switch from > to >= for the comparison.
- vm_table[] entry for zone_reclaim_mode is a bit screwed up.
- Add empty lines around shrink_zone to show that this is the
central function to be called.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:28 +0000 (03:05 -0800)]
[PATCH] mm: improve function of sc->may_writepage
Make sc->may_writepage control the writeout behavior of shrink_list.
Remove the laptop_mode trick from shrink_list and instead set may_writepage
in try_to_free_pages properly.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andy Whitcroft [Wed, 1 Feb 2006 11:05:27 +0000 (03:05 -0800)]
[PATCH] GFP_ZONETYPES: calculate from GFP_ZONEMASK
GFP_ZONETYPES calculate from GFP_ZONEMASK
GFP_ZONETYPES's value is directly related to the value of GFP_ZONEMASK. It
takes one of two forms depending whether the top bit of GFP_ZONEMASK is a
'loner'. Supply both forms, enabling the loner.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andy Whitcroft [Wed, 1 Feb 2006 11:05:26 +0000 (03:05 -0800)]
[PATCH] GFP_ZONETYPES: add commentry on how to calculate
GFP_ZONETYPES define using GFP_ZONEMASK and add commentry
Add commentry explaining the optimisation that we can apply to GFP_ZONETYPES
when the leftmost bit is a 'loaner', it can only be set in isolation.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:26 +0000 (03:05 -0800)]
[PATCH] zone_reclaim: reclaim on memory only node support
Zone reclaim is usually only run on the local node. Headless nodes do not
have any local processors. This patch checks for headless nodes and
performs zone reclaim on them.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Christoph Lameter [Wed, 1 Feb 2006 11:05:25 +0000 (03:05 -0800)]
[PATCH] Optimize off-node performance of zone reclaim
Ensure that the performance of off node pages stays the same as before.
Off node pagefault tests showed an 18% drop in performance without this
patch.
- Increase the timeout to 30 seconds to reduce the overhead.
- Move all code possible out of the off node hot path for zone reclaim
(Sorry Andrew, the struct initialization had to be sacrificed).
The read_page_state() bit us there.
- Check first for the timeout before any other checks.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alexey Dobriyan [Wed, 1 Feb 2006 11:05:24 +0000 (03:05 -0800)]
[PATCH] Mark CONFIG_UFS_FS_WRITE as BROKEN
OpenBSD doesn't see "." correctly in directories created by Linux. Copying
files over several KB will buy you infinite loop in __getblk_slow().
Copying files smaller than 1 KB seems to be OK. Sometimes files will be
filled with zeros. Sometimes incorrectly copied file will reappear after
next file with truncated size.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
David Gibson [Wed, 1 Feb 2006 11:05:22 +0000 (03:05 -0800)]
[PATCH] powerpc: Add flattened device tree documentation
The flattened device tree is the only supported way of booting ARCH=powerpc
kernels on non Open Firmware machines. The documentation for the flattened
tree format and contents has been discussed on mailing lists and lately has
been living in the dtc git tree. Really, it ought to go in the kernel's
Documentation directory for maximum visibility.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Wed, 1 Feb 2006 11:05:21 +0000 (03:05 -0800)]
[PATCH] swsusp: do not change log level during suspend/resume
Prevent the kernel from setting the log level to 10 unconditionally during
suspend/resume which was needed in the past for debugging, but generally is
undesirable.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Dave Jones [Wed, 1 Feb 2006 11:05:21 +0000 (03:05 -0800)]
[PATCH] fix saa7146 kobject register failure
Whoops.
kobject_register failed for hexium HV-PCI6/Orion (-13)
[<
c01d3eb6>] kobject_register+0x31/0x47
[<
c023a996>] bus_add_driver+0x4a/0xfd
[<
c01de3c1>] __pci_register_driver+0x82/0xa4
[<
d083400a>] hexium_init_module+0xa/0x47 [hexium_orion]
[<
c013bdae>] sys_init_module+0x167b/0x1822
[<
c01633f7>] do_sync_read+0xb8/0xf3
[<
c0133fa3>] autoremove_wake_function+0x0/0x2d
[<
c0145390>] audit_syscall_entry+0x118/0x13f
[<
c0106ae2>] do_syscall_trace+0x104/0x14a
[<
c0103d21>] syscall_call+0x7/0xb
slashes in kobject names aren't allowed.
Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
V. Ananda Krishnan [Wed, 1 Feb 2006 11:05:20 +0000 (03:05 -0800)]
[PATCH] jsm: fix for high baud rates problem
Scott Kilau <Scott_Kilau@digi.com>
Digi serial port console doesn't work when baud rates are set higher than
38400. So the lookup table and code in jsm_neo.c has been modified and
tested. Please let me have the feed-back.
Signed-off-by: V.Ananda Krishnan <mansarov@us.ibm.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
john stultz [Wed, 1 Feb 2006 11:05:19 +0000 (03:05 -0800)]
[PATCH] disable lost tick compensation before TSCs are synced
Avoid lost tick compensation early in boot before the TSCs are
synchronized. Currently timekeeping is enabled before the TSCs are
synchronized, thus when the TSCs are synched (reset to zero), it appears
that a number of lost ticks have occurred. This can cause premature expiry
of timers and in extreme cases can cause the soft lockup detection to fire.
This resolves issues reported by Andy Whitcroft as well as bug #5366
reported by Tim Mann.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jack Steiner [Wed, 1 Feb 2006 11:05:18 +0000 (03:05 -0800)]
[PATCH] sys_sched_getaffinity() & hotplug
Change sched_getaffinity() so that it returns a bitmap that indicates the
legally schedulable cpus that a task is allowed to run on.
Without this patch, if CONFIG_HOTPLUG_CPU is enabled, sched_getaffinity()
unconditionally returns (at least on IA64) a mask with NR_CPUS bits set.
This conveys no useful infornmation except for a kernel compile option.
This fixes a breakage we obseved running recent kernels. We have MPI jobs
that use sched_getaffinity() to determine where to place their threads.
Placing them on non-existant cpus is problematic :-)
Signed-off-by: Jack Steiner <steiner@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Nathan Lynch <ntl@pobox.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Bryan O'Sullivan [Wed, 1 Feb 2006 11:05:17 +0000 (03:05 -0800)]
[PATCH] Add faster __iowrite32_copy routine for x86_64
This assembly version is measurably faster than the generic version in
lib/iomap_copy.c.
Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Bryan O'Sullivan [Wed, 1 Feb 2006 11:05:16 +0000 (03:05 -0800)]
[PATCH] Introduce __iowrite32_copy
This arch-independent routine copies data to a memory-mapped I/O region,
using 32-bit accesses. The naming is double-underscored to make it clear
that it does not guarantee write ordering, nor does it perform a memory
barrier afterwards; the kernel doc also explicitly states this. This style
of access is required by some devices.
This change also introduces include/linux/io.h, at Andrew's suggestion. It
only has one occupant at the moment, but is a logical destination for
oft-replicated contents of include/asm-*/{io,iomap}.h to migrate to.
Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Bryan O'Sullivan [Wed, 1 Feb 2006 11:05:15 +0000 (03:05 -0800)]
[PATCH] Define BITS_PER_BYTE
This can make the intent behind some arithmetic expressions clearer.
Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Adrian Bunk [Wed, 1 Feb 2006 11:05:14 +0000 (03:05 -0800)]
[PATCH] kernel/posix-timers.c: remove do_posix_clock_notimer_create()
This function is neither used nor has any real contents.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Thomas Gleixner [Wed, 1 Feb 2006 11:05:13 +0000 (03:05 -0800)]
[PATCH] hrtimers: set correct initial expiry time for relative SIGEV_NONE timers
The expiry time for relative timers with SIGEV_NONE set was never
updated to the correct value.
Pointed out by George Anzinger.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Thomas Gleixner [Wed, 1 Feb 2006 11:05:13 +0000 (03:05 -0800)]
[PATCH] hrtimers: add back lost credit lines
At some point we added credits to people who actively helped to bring
k/hr-timers along. This was lost in the big code revamp. Add it back.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
George Anzinger [Wed, 1 Feb 2006 11:05:11 +0000 (03:05 -0800)]
[PATCH] hrtimers: cleanups and simplifications
Clean up the interface to hrtimers by changing the init code to pass the mode
as well as the clock. This allow the init code to select the correct base and
eliminates extra timer re-init code in posix-timers. We also simplify the
restart interface nanosleep use.
Signed-off-by: George Anzinger <george@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
akpm@osdl.org [Wed, 1 Feb 2006 11:05:10 +0000 (03:05 -0800)]
[PATCH] hrtimers: fix posix-timer requeue race
From: Steven Rostedtrostedt@goodmis.org <rostedt@goodmis.org>
CPU0 expires a posix-timer and runs the callback function. The signal is
queued.
After releasing the posix-timer lock and before returning to hrtimer_run_queue
CPU0 gets interrupted. CPU1 delivers the queued signal and rearms the timer.
CPU0 comes back to hrtimer_run_queue and sets the timer state to expired.
The next modification of the timer can result in an oops, because the state
information is wrong.
Keep track of state = RUNNING and check if the state has been in the return
path of hrtimer_run_queue. In case the state has been changed, ignore a
restart request and do not touch the state variable.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Thomas Gleixner [Wed, 1 Feb 2006 11:05:09 +0000 (03:05 -0800)]
[PATCH] hrtimers: fix oldvalue return in setitimer
This resolves bugzilla bug#5617. The oldvalue of the timer was read after the
timer was cancelled, so the remaining time was always zero.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Thomas Gleixner [Wed, 1 Feb 2006 11:05:09 +0000 (03:05 -0800)]
[PATCH] hrtimers: fix possible use of NULL pointer in posix-timers
Fixup the conversion of posix-timers to hrtimers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Thomas Gleixner [Wed, 1 Feb 2006 11:05:08 +0000 (03:05 -0800)]
[PATCH] hrtimers: fixup itimer conversion
The itimer conversion removed the locking which protects the timer and
variables in the shared signal structure. Steven Rostedt found the problem in
the latest -rt patches.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>