12 Mar, 2011
1 commit
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…wireless-next-2.6 into for-davem
05 Mar, 2011
1 commit
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Make CONFIG_AVERAGE selectable for out-of-tree users
such as compat-wireless.Signed-off-by: Michael Buesch
Signed-off-by: John W. Linville
25 Jan, 2011
1 commit
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When initiating I/O on a multiqueue and multi-IRQ device, we may want
to select a queue for which the response will be handled on the same
or a nearby CPU. This requires a reverse-map of IRQ affinity. Add
library functions to support a generic reverse-mapping from CPUs to
objects with affinity and the specific case where the objects are
IRQs.Signed-off-by: Ben Hutchings
Signed-off-by: David S. Miller
14 Jan, 2011
2 commits
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This implements the API defined in which is
used for kernel, initramfs, and initrd decompression. This patch together
with the first patch is enough for XZ-compressed initramfs and initrd;
XZ-compressed kernel will need arch-specific changes.The buffering requirements described in decompress_unxz.c are stricter
than with gzip, so the relevant changes should be done to the
arch-specific code when adding support for XZ-compressed kernel.
Similarly, the heap size in arch-specific pre-boot code may need to be
increased (30 KiB is enough).The XZ decompressor needs memmove(), memeq() (memcmp() == 0), and
memzero() (memset(ptr, 0, size)), which aren't available in all
arch-specific pre-boot environments. I'm including simple versions in
decompress_unxz.c, but a cleaner solution would naturally be nicer.Signed-off-by: Lasse Collin
Cc: "H. Peter Anvin"
Cc: Alain Knaff
Cc: Albin Tonnerre
Cc: Phillip Lougher
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In userspace, the .lzma format has become mostly a legacy file format that
got superseded by the .xz format. Similarly, LZMA Utils was superseded by
XZ Utils.These patches add support for XZ decompression into the kernel. Most of
the code is as is from XZ Embedded .
It was written for the Linux kernel but is usable in other projects too.Advantages of XZ over the current LZMA code in the kernel:
- Nice API that can be used by other kernel modules; it's
not limited to kernel, initramfs, and initrd decompression.
- Integrity check support (CRC32)
- BCJ filters improve compression of executable code on
certain architectures. These together with LZMA2 can
produce a few percent smaller kernel or Squashfs images
than plain LZMA without making the decompression slower.This patch: Add the main decompression code (xz_dec), testing module
(xz_dec_test), wrapper script (xz_wrap.sh) for the xz command line tool,
and documentation. The xz_dec module is enough to have a usable XZ
decompressor e.g. for Squashfs.Signed-off-by: Lasse Collin
Cc: "H. Peter Anvin"
Cc: Alain Knaff
Cc: Albin Tonnerre
Cc: Phillip Lougher
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 Nov, 2010
1 commit
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This adds generic functions for calculating Exponentially Weighted Moving
Averages (EWMA). This implementation makes use of a structure which keeps the
EWMA parameters and a scaled up internal representation to reduce rounding
errors.The original idea for this implementation came from the rt2x00 driver
(rt2x00link.c). I would like to use it in several places in the mac80211 and
ath5k code and I hope it can be useful in many other places in the kernel code.Signed-off-by: Bruno Randolf
Reviewed-by: KOSAKI Motohiro
Signed-off-by: John W. Linville
09 Aug, 2010
1 commit
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Conflicts:
drivers/md/Makefile
lib/raid6/unroll.pl
14 Jul, 2010
1 commit
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via following scripts
FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')
sed -i \
-e 's/lmb/memblock/g' \
-e 's/LMB/MEMBLOCK/g' \
$FILESfor N in $(find . -name lmb.[ch]); do
M=$(echo $N | sed 's/lmb/memblock/g')
mv $N $M
doneand remove some wrong change like lmbench and dlmb etc.
also move memblock.c from lib/ to mm/
Suggested-by: Ingo Molnar
Acked-by: "H. Peter Anvin"
Acked-by: Benjamin Herrenschmidt
Acked-by: Linus Torvalds
Signed-off-by: Yinghai Lu
Signed-off-by: Benjamin Herrenschmidt
08 Mar, 2010
1 commit
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This reverts commit a069c266ae5fdfbf5b4aecf2c672413aa33b2504.
It turns ou that not only was it missing a case (XFS) that needed it,
but perhaps more importantly, people sometimes want to enable new
modules that they hadn't had enabled before, and if such a module uses
list_sort(), it can't easily be inserted any more.So rather than add a "select LIST_SORT" to the XFS case, just leave it
compiled in. It's not all _that_ big, after all, and the inconvenience
isn't worth it.Requested-by: Alexey Dobriyan
Cc: Christoph Hellwig
Cc: Don Mullis
Cc: Andrew Morton
Cc: Dave Chinner
Signed-off-by: Linus Torvalds
07 Mar, 2010
2 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:
[LogFS] Change magic number
[LogFS] Remove h_version field
[LogFS] Check feature flags
[LogFS] Only write journal if dirty
[LogFS] Fix bdev erases
[LogFS] Silence gcc
[LogFS] Prevent 64bit divisions in hash_index
[LogFS] Plug memory leak on error paths
[LogFS] Add MAINTAINERS entry
[LogFS] add new flash file systemFixed up trivial conflict in lib/Kconfig, and a semantic conflict in
fs/logfs/inode.c introduced by write_inode() being changed to use
writeback_control' by commit a9185b41a4f84971b930c519f0c63bd450c4810d
("pass writeback_control to ->write_inode") -
Build list_sort() only for configs that need it -- those that don't save
~581 bytes (i386).Signed-off-by: Don Mullis
Cc: Dave Airlie
Cc: Andi Kleen
Cc: Dave Chinner
Cc: Artem Bityutskiy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Jan, 2010
1 commit
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Signed-off-by: Albin Tonnerre
Tested-by: Wu Zhangjin
Acked-by: "H. Peter Anvin"
Cc: Ingo Molnar
Cc: Thomas Gleixner
Tested-by: Russell King
Acked-by: Russell King
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Nov, 2009
1 commit
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This is a new flash file system. See
Documentation/filesystems/logfs.txtSigned-off-by: Joern Engel
29 Oct, 2009
1 commit
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We'll want to use these in btrfs too.
Signed-off-by: David Woodhouse
02 Oct, 2009
1 commit
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Signed-off-by: Philipp Reisner
Signed-off-by: Lars Ellenberg
15 Jun, 2009
1 commit
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Many processor architectures have no 64-bit atomic instructions, but
we need atomic64_t in order to support the perf_counter subsystem.This adds an implementation of 64-bit atomic operations using hashed
spinlocks to provide atomicity. For each atomic operation, the address
of the atomic64_t variable is hashed to an index into an array of 16
spinlocks. That spinlock is taken (with interrupts disabled) around the
operation, which can then be coded non-atomically within the lock.On UP, all the spinlock manipulation goes away and we simply disable
interrupts around each operation. In fact gcc eliminates the whole
atomic64_lock variable as well.Signed-off-by: Paul Mackerras
Signed-off-by: Benjamin Herrenschmidt
11 Jun, 2009
1 commit
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Provide a helper function to determine optimum numerator
denominator value pairs taking into account restricted
register size. Useful especially with PLL and other clock
configurations.Signed-off-by: Oskar Schirmer
Signed-off-by: Alan Cox
Signed-off-by: Linus Torvalds
29 Mar, 2009
1 commit
28 Mar, 2009
1 commit
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Conflicts:
arch/parisc/kernel/irq.c
arch/x86/include/asm/fixmap_64.h
arch/x86/include/asm/setup.h
kernel/irq/handle.cSemantic merge:
arch/x86/include/asm/fixmap.hSigned-off-by: Ingo Molnar
27 Mar, 2009
1 commit
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* 'sched-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (46 commits)
sched: Add comments to find_busiest_group() function
sched: Refactor the power savings balance code
sched: Optimize the !power_savings_balance during fbg()
sched: Create a helper function to calculate imbalance
sched: Create helper to calculate small_imbalance in fbg()
sched: Create a helper function to calculate sched_domain stats for fbg()
sched: Define structure to store the sched_domain statistics for fbg()
sched: Create a helper function to calculate sched_group stats for fbg()
sched: Define structure to store the sched_group statistics for fbg()
sched: Fix indentations in find_busiest_group() using gotos
sched: Simple helper functions for find_busiest_group()
sched: remove unused fields from struct rq
sched: jiffies not printed per CPU
sched: small optimisation of can_migrate_task()
sched: fix typos in documentation
sched: add avg_overlap decay
x86, sched_clock(): mark variables read-mostly
sched: optimize ttwu vs group scheduling
sched: TIF_NEED_RESCHED -> need_reshed() cleanup
sched: don't rebalance if attached on NULL domain
...
07 Mar, 2009
1 commit
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Impact: add new APIs for binary trace printk infrastructure
vbin_printf(): write args to binary buffer, string is copied
when "%s" is occurred.bstr_printf(): read from binary buffer for args and format a string
[fweisbec@gmail.com: rebase]
Signed-off-by: Lai Jiangshan
Signed-off-by: Frederic Weisbecker
Cc: Linus Torvalds
LKML-Reference:
Signed-off-by: Ingo Molnar
04 Mar, 2009
1 commit
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Netlink attribute parsing may be used even if CONFIG_NET is not set.
Move it from net/netlink to lib and control its inclusion based on the new
config symbol CONFIG_NLATTR, which is selected by CONFIG_NET.Signed-off-by: Geert Uytterhoeven
Acked-by: David S. Miller
Signed-off-by: Herbert Xu
16 Jan, 2009
1 commit
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Ingo Molnar wrote:
> here's a new build failure with tip/sched/rt:
>
> LD .tmp_vmlinux1
> kernel/built-in.o: In function `set_curr_task_rt':
> sched.c:(.text+0x3675): undefined reference to `plist_del'
> kernel/built-in.o: In function `pick_next_task_rt':
> sched.c:(.text+0x37ce): undefined reference to `plist_del'
> kernel/built-in.o: In function `enqueue_pushable_task':
> sched.c:(.text+0x381c): undefined reference to `plist_del'Eliminate the plist library kconfig and make it available
unconditionally.Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar
07 Jan, 2009
1 commit
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Impact: Partial resolution of build failure
DECOMPRESS_GZIP is just a common-interface wrapper around the
zlib_inflate code; it thus need to select it.Signed-off-by: H. Peter Anvin
06 Jan, 2009
1 commit
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Impact: Partial resolution of build failure
Make all the compression algorithms properly configurable, and make
sure the ramdisk options pull in the proper compression algorithms, as
they should.Signed-off-by: H. Peter Anvin
01 Jan, 2009
2 commits
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Impact: new debug CONFIG options
This helps find unconverted code. It currently breaks compile horribly,
but we never wanted a flag day so that's expected.Signed-off-by: Rusty Russell
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Impact: New API
As the name suggests. For the moment everyone uses the generic one.
Signed-off-by: Rusty Russell
30 Dec, 2008
1 commit
25 Dec, 2008
2 commits
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Selecting CRYPTO_CRC32C is not enough as CRYPTO which CRYPTO_CRC32C
depends on may be disabled. This patch adds the select on CRYPTO.Signed-off-by: Herbert Xu
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This patch swaps the role of libcrc32c and crc32c. Previously
the implementation was in libcrc32c and crc32c was a wrapper.
Now the code is in crc32c and libcrc32c just calls the crypto
layer.The reason for the change is to tap into the algorithm selection
capability of the crypto API so that optimised implementations
such as the one utilising Intel's CRC32C instruction can be
used where available.Signed-off-by: Herbert Xu
13 Dec, 2008
1 commit
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Impact: Add config option to enable code in cpumask.h
Currently it can be set if DEBUG_PER_CPU_MAPS, or set specifically by
an arch.Signed-off-by: Rusty Russell
17 Oct, 2008
1 commit
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Using "def_bool n" is pointless, simply using bool here appears more
appropriate.Further, retaining such options that don't have a prompt and aren't
selected by anything seems also at least questionable.Signed-off-by: Jan Beulich
Cc: Ingo Molnar
Cc: Tony Luck
Cc: Thomas Gleixner
Cc: Bartlomiej Zolnierkiewicz
Cc: Sam Ravnborg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Jul, 2008
1 commit
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The SCSI Block Protocol uses this 16-bit CRC to verify the integrity
of each data sector. crc_t10dif() is used by sd_dif.c when performing
I/O to or from disks formatted with protection information.Signed-off-by: Martin K. Petersen
Signed-off-by: James Bottomley
27 Apr, 2008
1 commit
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Introduce GENERIC_FIND_FIRST_BIT and GENERIC_FIND_NEXT_BIT in
lib/Kconfig, defaulting to off. An arch that wants to use the
generic implementation now only has to use a select statement
to include them.I added an always-y option (X86_CPU) to arch/x86/Kconfig.cpu
and used that to select the generic search functions. This
way ARCH=um SUBARCH=i386 automatically picks up the change
too, and arch/um/Kconfig.i386 can therefore be simplified a
bit. ARCH=um SUBARCH=x86_64 does things differently, but
still compiles fine. It seems that a "def_bool y" always
wins over a "def_bool n"?Signed-off-by: Alexander van Heukelum
Signed-off-by: Ingo Molnar
14 Feb, 2008
1 commit
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Signed-off-by: David S. Miller
23 Aug, 2007
1 commit
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Introduce CONFIG_CHECK_SIGNATURE to control inclusion of check_signature()
and avoid problems on platforms that don't have readb().Let the few legacy (ISA || PCI || X86) drivers that need check_signature()
select CONFIG_CHECK_SIGNATURE.Signed-off-by: Geert Uytterhoeven
Cc: Jeff Dike
Cc: Heiko Carstens
Cc: Roman Zippel
Cc: Alan Cox
Cc: Martin Schwidefsky
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
18 Jul, 2007
1 commit
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Add CRC7 routines, used for example in MMC over SPI communication.
Kerneldoc updates[akpm@linux-foundation.org: fix funny mix of const and non-const]
Signed-off-by: Jan Nikitenko
Signed-off-by: David Brownell
Cc: "Randy.Dunlap"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Jul, 2007
1 commit
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This is a hybrid version of the patch to add the LZO1X compression
algorithm to the kernel. Nitin and myself have merged the best parts of
the various patches to form this version which we're both happy with (and
are jointly signing off).The performance of this version is equivalent to the original minilzo code
it was based on. Bytecode comparisons have also been made on ARM, i386 and
x86_64 with favourable results.There are several users of LZO lined up including jffs2, crypto and reiser4
since its much faster than zlib.Signed-off-by: Nitin Gupta
Signed-off-by: Richard Purdie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 May, 2007
2 commits
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* 'juju' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (138 commits)
firewire: Convert OHCI driver to use standard goto unwinding for error handling.
firewire: Always use parens with sizeof.
firewire: Drop single buffer request support.
firewire: Add a comment to describe why we split the sg list.
firewire: Return SCSI_MLQUEUE_HOST_BUSY for out of memory cases in queuecommand.
firewire: Handle the last few DMA mapping error cases.
firewire: Allocate scsi_host up front and allocate the sbp2_device as hostdata.
firewire: Provide module aliase for backwards compatibility.
firewire: Add to fw-core-y instead of assigning fw-core-objs in Makefile.
firewire: Break out shared IEEE1394 constant to separate header file.
firewire: Use linux/*.h instead of asm/*.h header files.
firewire: Uppercase most macro names.
firewire: Coding style cleanup: no spaces after function names.
firewire: Convert card_rwsem to a regular mutex.
firewire: Clean up comment style.
firewire: Use lib/ implementation of CRC ITU-T.
CRC ITU-T V.41
firewire: Rename fw-device-cdev.c to fw-cdev.c and move header to include/linux.
firewire: Future proof the iso ioctls by adding a handle for the iso context.
firewire: Add read/write and size annotations to IOC numbers.
...Acked-by: Christoph Hellwig
Signed-off-by: Linus Torvalds -
This will add the CRC calculation according
to the CRC ITU-T V.41 to the kernel lib/ folder.This code has been derived from the rt2x00 driver,
currently found only in the wireless-dev tree, but
this library is generic and could be used by more
drivers who currently use their own implementation.Signed-off-by: Ivo van Doorn
Also useful for the new firewire stack.
Signed-off-by: Kristian Hoegsberg
Signed-off-by: Stefan Richter
