Commit Graph

365 Commits

Author SHA1 Message Date
Bryan Wu
1394f03221 blackfin architecture
This adds support for the Analog Devices Blackfin processor architecture, and
currently supports the BF533, BF532, BF531, BF537, BF536, BF534, and BF561
(Dual Core) devices, with a variety of development platforms including those
avaliable from Analog Devices (BF533-EZKit, BF533-STAMP, BF537-STAMP,
BF561-EZKIT), and Bluetechnix!  Tinyboards.

The Blackfin architecture was jointly developed by Intel and Analog Devices
Inc.  (ADI) as the Micro Signal Architecture (MSA) core and introduced it in
December of 2000.  Since then ADI has put this core into its Blackfin
processor family of devices.  The Blackfin core has the advantages of a clean,
orthogonal,RISC-like microprocessor instruction set.  It combines a dual-MAC
(Multiply/Accumulate), state-of-the-art signal processing engine and
single-instruction, multiple-data (SIMD) multimedia capabilities into a single
instruction-set architecture.

The Blackfin architecture, including the instruction set, is described by the
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
http://blackfin.uclinux.org/gf/download/frsrelease/29/2549/Blackfin_PRM.pdf

The Blackfin processor is already supported by major releases of gcc, and
there are binary and source rpms/tarballs for many architectures at:
http://blackfin.uclinux.org/gf/project/toolchain/frs There is complete
documentation, including "getting started" guides available at:
http://docs.blackfin.uclinux.org/ which provides links to the sources and
patches you will need in order to set up a cross-compiling environment for
bfin-linux-uclibc

This patch, as well as the other patches (toolchain, distribution,
uClibc) are actively supported by Analog Devices Inc, at:
http://blackfin.uclinux.org/

We have tested this on LTP, and our test plan (including pass/fails) can
be found at:
http://docs.blackfin.uclinux.org/doku.php?id=testing_the_linux_kernel

[m.kozlowski@tuxland.pl: balance parenthesis in blackfin header files]
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Aubrey Li <aubrey.li@analog.com>
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:58 -07:00
Heiko Carstens
411f0f3edc Introduce CONFIG_HAS_DMA
Architectures that don't support DMA can say so by adding a config NO_DMA
to their Kconfig file.  This will prevent compilation of some dma specific
driver code.  Also dma-mapping-broken.h isn't needed anymore on at least
s390.  This avoids compilation and linking of otherwise dead/broken code.

Other architectures that include dma-mapping-broken.h are arm26, h8300,
m68k, m68knommu and v850.  If these could be converted as well we could get
rid of the header file.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
"John W. Linville" <linville@tuxdriver.com>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: <James.Bottomley@SteelEye.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: <geert@linux-m68k.org>
Cc: <zippel@linux-m68k.org>
Cc: <spyro@f2s.com>
Cc: <uclinux-v850@lsi.nec.co.jp>
Cc: <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:51 -07:00
Christoph Lameter
476f35348e Safer nr_node_ids and nr_node_ids determination and initial values
The nr_cpu_ids value is currently only calculated in smp_init.  However, it
may be needed before (SLUB needs it on kmem_cache_init!) and other kernel
components may also want to allocate dynamically sized per cpu array before
smp_init.  So move the determination of possible cpus into sched_init()
where we already loop over all possible cpus early in boot.

Also initialize both nr_node_ids and nr_cpu_ids with the highest value they
could take.  If we have accidental users before these values are determined
then the current valud of 0 may cause too small per cpu and per node arrays
to be allocated.  If it is set to the maximum possible then we only waste
some memory for early boot users.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-07 12:12:51 -07:00
Linus Torvalds
15700770ef Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (38 commits)
  kconfig: fix mconf segmentation fault
  kbuild: enable use of code from a different dir
  kconfig: error out if recursive dependencies are found
  kbuild: scripts/basic/fixdep segfault on pathological string-o-death
  kconfig: correct minor typo in Kconfig warning message.
  kconfig: fix path to modules.txt in Kconfig help
  usr/Kconfig: fix typo
  kernel-doc: alphabetically-sorted entries in index.html of 'htmldocs'
  kbuild: be more explicit on missing .config file
  kbuild: clarify the creation of the LOCALVERSION_AUTO string.
  kbuild: propagate errors from find in scripts/gen_initramfs_list.sh
  kconfig: refer to qt3 if we cannot find qt libraries
  kbuild: handle compressed cpio initramfs-es
  kbuild: ignore section mismatch warning for references from .paravirtprobe to .init.text
  kbuild: remove stale comment in modpost.c
  kbuild/mkuboot.sh: allow spaces in CROSS_COMPILE
  kbuild: fix make mrproper for Documentation/DocBook/man
  kbuild: remove kconfig binaries during make mrproper
  kconfig/menuconfig: do not hardcode '.config'
  kbuild: override build timestamp & version
  ...
2007-05-06 13:21:57 -07:00
Linus Torvalds
ea62ccd00f Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
  [PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
  [PATCH] i386: type may be unused
  [PATCH] i386: Some additional chipset register values validation.
  [PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
  [PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
  [PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
  [PATCH] i386: white space fixes in i387.h
  [PATCH] i386: Drop noisy e820 debugging printks
  [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
  [PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
  [PATCH] x86-64: Share identical video.S between i386 and x86-64
  [PATCH] x86-64: Remove CONFIG_REORDER
  [PATCH] x86-64: Print type and size correctly for unknown compat ioctls
  [PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
  [PATCH] i386: Little cleanups in smpboot.c
  [PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
  [PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
  [PATCH] i386: Add X86_FEATURE_RDTSCP
  [PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
  [PATCH] i386: Implement alternative_io for i386
  ...

Fix up trivial conflict in include/linux/highmem.h manually.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-05 14:55:20 -07:00
Linus Torvalds
6cbf0c704d iomap: make the default iomap functions fail softer
We used to BUG_ON() for a badly mapped IO port, which is certainly
correct, but actually made it harder to debug the case where the ATA
drivers had incorrectly mapped a nonconnected ATA port.

So make badly mapped ports trigger a WARN_ON(), and throw the IO away
instead (and return all ones for reads).  For things like broken driver
initialization - which is the most likely cause anyway - that should
mean that the machine comes up and is usable (at least that was the case
for the ATA breakage that triggered this patch).

It tends to be a whole lot easier to do a "dmesg" on a working machine
than to try to capture logs off a dead one.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-04 20:44:23 -07:00
Linus Torvalds
7e20ef030d Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (49 commits)
  [SCTP]: Set assoc_id correctly during INIT collision.
  [SCTP]: Re-order SCTP initializations to avoid race with sctp_rcv()
  [SCTP]: Fix the SO_REUSEADDR handling to be similar to TCP.
  [SCTP]: Verify all destination ports in sctp_connectx.
  [XFRM] SPD info TLV aggregation
  [XFRM] SAD info TLV aggregationx
  [AF_RXRPC]: Sort out MTU handling.
  [AF_IUCV/IUCV] : Add missing section annotations
  [AF_IUCV]: Implementation of a skb backlog queue
  [NETLINK]: Remove bogus BUG_ON
  [IPV6]: Some cleanups in include/net/ipv6.h
  [TCP]: zero out rx_opt in tcp_disconnect()
  [BNX2]: Fix TSO problem with small MSS.
  [NET]: Rework dev_base via list_head (v3)
  [TCP] Highspeed: Limited slow-start is nowadays in tcp_slow_start
  [BNX2]: Update version and reldate.
  [BNX2]: Print bus information for PCIE devices.
  [BNX2]: Add 1-shot MSI handler for 5709.
  [BNX2]: Restructure PHY event handling.
  [BNX2]: Add indirect spinlock.
  ...
2007-05-04 19:36:58 -07:00
David Howells
ef4533f8af [AFS]: Make the match_*() functions take const options.
Make the match_*() functions take a const pointer to the options table
and make strings pointers in the options table const too.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-03 03:10:39 -07:00
Greg Kroah-Hartman
823bccfc40 remove "struct subsystem" as it is no longer needed
We need to work on cleaning up the relationship between kobjects, ksets and
ktypes.  The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.

Thanks to Kay for fixing the bugs in this patch.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 18:57:59 -07:00
Andreas Dilger
b72e53f8bb kconfig.debug: clarify CONFIG_DEBUG_INFO help text
The following patch adds some extra clarification to the CONFIG_DEBUG_INFO
Kconfig help text.  The current text is mostly a recursive definition and
doesn't really say much of anything.  When I first read this I thought it
was going to enable extra verbosity in debug messages or something, but it
is only enabling the "gcc -g" compile option in the Makefile.

Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02 20:58:09 +02:00
Jeremy Fitzhardinge
39b7ee0685 [PATCH] x86-64: deflate inflate_dynamic too
inflate_dynamic() has piggy stack usage too, so heap allocate it too.
I'm not sure it actually gets used, but it shows up large in "make
checkstack".

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2007-05-02 19:27:15 +02:00
Jeremy Fitzhardinge
35c7422649 [PATCH] x86: deflate stack usage in lib/inflate.c
inflate_fixed and huft_build together use around 2.7k of stack.  When
using 4k stacks, I saw stack overflows from interrupts arriving while
unpacking the root initrd:

do_IRQ: stack overflow: 384
 [<c0106b64>] show_trace_log_lvl+0x1a/0x30
 [<c01075e6>] show_trace+0x12/0x14
 [<c010763f>] dump_stack+0x16/0x18
 [<c0107ca4>] do_IRQ+0x6d/0xd9
 [<c010202b>] xen_evtchn_do_upcall+0x6e/0xa2
 [<c0106781>] xen_hypervisor_callback+0x25/0x2c
 [<c010116c>] xen_restore_fl+0x27/0x29
 [<c0330f63>] _spin_unlock_irqrestore+0x4a/0x50
 [<c0117aab>] change_page_attr+0x577/0x584
 [<c0117b45>] kernel_map_pages+0x8d/0xb4
 [<c016a314>] cache_alloc_refill+0x53f/0x632
 [<c016a6c2>] __kmalloc+0xc1/0x10d
 [<c0463d34>] malloc+0x10/0x12
 [<c04641c1>] huft_build+0x2a7/0x5fa
 [<c04645a5>] inflate_fixed+0x91/0x136
 [<c04657e2>] unpack_to_rootfs+0x5f2/0x8c1
 [<c0465acf>] populate_rootfs+0x1e/0xe4

(This was under Xen, but there's no reason it couldn't happen on bare
  hardware.)

This patch mallocs the local variables, thereby reducing the stack
usage to sane levels.

Also, up the heap size for the kernel decompressor to deal with the
extra allocation.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Tim Yamin <plasmaroo@gentoo.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ian Molton <spyro@f2s.com>
2007-05-02 19:27:15 +02:00
Jeremy Fitzhardinge
11443ec7d9 Add kvasprintf()
Add a kvasprintf() function to complement kasprintf().

No in-tree users yet, but I have some coming up.

[akpm@linux-foundation.org: EXPORT it]
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Keir Fraser <keir@xensource.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-30 16:40:40 -07:00
Tejun Heo
ec04b07584 iomap: implement pcim_iounmap_regions()
Implement pcim_iounmap_regions() - the opposite of
pcim_iomap_regions().

Signed-off-by: Tejun heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:58 -04:00
Adrian Bunk
3106d46f51 the overdue removal of the mount/umount uevents
This patch contains the overdue removal of the mount/umount uevents.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:31 -07:00
Eric W. Biederman
2753133eb3 kobject: Comment and warning fixes to kobject.c
This dots some i's and crosses some t's after left over from when
kobject_kset_add_dir was built from kobject_add_dir. 

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:31 -07:00
Greg Kroah-Hartman
4628803062 kobject core: remove rwsem from struct subsystem
It isn't used at all by the driver core anymore, and the few usages of
it within the kernel have now all been fixed as most of them were using
it incorrectly.  So remove it.

Now the whole struct subsys can be removed from the system, but that's
for a later patch...

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:31 -07:00
Cornelia Huck
88db4721d4 kobject: kobject_add() reference leak
We leak a reference if we attempt to add a kobject with no name.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:30 -07:00
John Anthony Kazos Jr
14193fb91a Kobject: kobject_uevent.c: Collapse unnecessary loop nesting (top_kobj)
Collapses a do..while() loop within an if() to a simple while() loop for 
simplicity and readability.

Signed-off-by: John Anthony Kazos Jr. <jakj@j-a-k-j.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Jean Tourrilhes
ca2f37dbc5 Driver core: notify userspace of network device renames
Provide rename event for when we rename network devices.

Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Oliver Neukum
1b0b3b9980 kref: fix CPU ordering with respect to krefs
some atomic operations are only atomic, not ordered. Thus a CPU is allowed
to reorder memory references to an object to before the reference is
obtained. This fixes it.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Dmitriy Monakhov
460f7e9a1b kobject: kobject_shadow_add cleanup
- correct function name in comments
 - parrent assignment does metter only inside "if" block, 
   so move it inside this block.

Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Kay Sievers
864062457a driver core: fix namespace issue with devices assigned to classes
- uses a kset in "struct class" to keep track of all directories
    belonging to this class
  - merges with the /sys/devices/virtual logic.
  - removes the namespace-dir if the last member of that class
    leaves the directory.

There may be locking or refcounting fixes left, I stopped when it seemed
to work with network and sound modules. :)

From: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Linus Torvalds
0278ef8b48 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (67 commits)
  [SCSI] SUNESP: Complete driver rewrite to version 2.0
  [SPARC64]: Convert PCI over to generic struct iommu/strbuf.
  [SPARC]: device_node name constification fallout
  [SPARC64]: Convert SBUS over to generic iommu/strbuf structs.
  [SPARC64]: Add generic iommu and strbuf structs to iommu.h
  [SPARC64]: Consolidate {sbus,pci}_iommu_arena.
  [SPARC]: Make device_node name and type const
  [SPARC64]: constify some paramaters of OF routines
  [TIGON3]: of_get_property() returns const.
  [SPARC64]: Fix PCI rework to adhere to of_get_property() const return.
  [SPARC64]: Document and fix calculation of pages_avail.
  [SPARC64]: Make sure pbm->prom_node is setup easly enough in psycho.c
  [SPARC64]: Use bootmem_bootmap_pages() in choose_bootmap_pfn().
  [SPARC64]: Add proper header file extern for cmdline_memory_size.
  [SPARC64]: Kill sparc_ultra_dump_{i,d}tlb()
  [SPARC64]: Use DECLARE_BITMAP and BITS_TO_LONGS in mm/init.c
  [SPARC64]: Give move verbose show_mem() output just like i386.
  [SPARC64]: Mark show_mem() printk's with KERN_INFO.
  [SPARC64]: Kill kvaddr_to_phys() and friends.
  [SPARC64]: Privatize sun4u_get_pte() and fix name.
  ...
2007-04-27 09:29:04 -07:00
Linus Torvalds
15c5403396 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (448 commits)
  [IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)
  [IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.
  [IPV4]: Add multipath cached to feature-removal-schedule.txt
  [WIRELESS] cfg80211: Clarify locking comment.
  [WIRELESS] cfg80211: Fix locking in wiphy_new.
  [WEXT] net_device: Don't include wext bits if not required.
  [WEXT]: Misc code cleanups.
  [WEXT]: Reduce inline abuse.
  [WEXT]: Move EXPORT_SYMBOL statements where they belong.
  [WEXT]: Cleanup early ioctl call path.
  [WEXT]: Remove options.
  [WEXT]: Remove dead debug code.
  [WEXT]: Clean up how wext is called.
  [WEXT]: Move to net/wireless
  [AFS]: Eliminate cmpxchg() usage in vlocation code.
  [RXRPC]: Fix pointers passed to bitops.
  [RXRPC]: Remove bogus atomic_* overrides.
  [AFS]: Fix u64 printing in debug logging.
  [AFS]: Add "directory write" support.
  [AFS]: Implement the CB.InitCallBackState3 operation.
  ...
2007-04-27 09:26:46 -07:00
Franck Bui-Huu
14cf232ab1 [MIPS] Don't force frame pointers for lockdep on MIPS
Stacktrace support on MIPS doesn't use frame pointers.  Since this option
considerably increases the size of the kernel code, force lockdep to not
use it.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-04-27 16:20:26 +01:00
David S. Miller
ded220bd8f [STRING]: Move strcasecmp/strncasecmp to lib/string.c
We have several platforms using local copies of identical
code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-26 01:54:39 -07:00
Patrick McHardy
af65bdfce9 [NETLINK]: Switch cb_lock spinlock to mutex and allow to override it
Switch cb_lock to mutex and allow netlink kernel users to override it
with a subsystem specific mutex for consistent locking in dump callbacks.
All netlink_dump_start users have been audited not to rely on any
side-effects of the previously used spinlock.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:29:03 -07:00
David S. Miller
cb8c181f28 [S390]: Fix build on 31-bit.
Allow s390 to properly override the generic
__div64_32() implementation by:

1) Using obj-y for div64.o in s390's makefile instead
   of lib-y

2) Adding the weak attribute to the generic implementation.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:28:53 -07:00
Stephen Hemminger
22b9a0a3a4 [LIB]: div64_64 optimization
Minor optimization of div64_64.  do_div() already does optimization
for the case of 32 by 32 divide, so no need to do it here.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:27:18 -07:00
Stephen Hemminger
3927f2e8f9 [NET]: div64_64 consolidate (rev3)
Here is the current version of the 64 bit divide common code.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:23:33 -07:00
Dmitriy Monakhov
9e993efb0d kobject: new_device->kref wasn't putted after error in kobject_move()
If error happen we jump to "out" label, in this case new_device not yet
became the parent but it wasn't putted.

Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-03-09 15:32:58 -08:00
Tony Luck
25667d6754 Revert "[IA64] swiotlb abstraction (e.g. for Xen)"
This reverts commit 51099005ab.
2007-03-06 13:31:45 -08:00
Randy Dunlap
05fb6bf0b2 [PATCH] kernel-doc fixes for 2.6.20-git15 (non-drivers)
Fix kernel-doc warnings in 2.6.20-git15 (lib/, mm/, kernel/, include/).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:37 -08:00
Andrew Morton
96c62d51cc [PATCH] genalloc warning fixes
lib/genalloc.c: In function 'gen_pool_alloc':
lib/genalloc.c:151: warning: passing argument 2 of '__set_bit' from incompatible pointer type
lib/genalloc.c: In function 'gen_pool_free':
lib/genalloc.c:190: warning: passing argument 2 of '__clear_bit' from incompatible pointer type

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-20 17:10:15 -08:00
Akinobu Mita
1df49008f4 [PATCH] fault injection: split up stacktrace filter Kconfig option
There is no prompt for CONFIG_STACKTRACE, so FAULT_INJECTION cannot be
selected without LOCKDEP enabled.  (found by Paolo 'Blaisorblade'
Giarrusso)

In order to fix such broken Kconfig dependency, this patch splits up the
stacktrace filter support for fault injection by new Kconfig option, which
enables to use fault injection on the architecture which doesn't have
general stacktrace support.

Cc: "Paolo 'Blaisorblade' Giarrusso" <blaisorblade@yahoo.it>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-20 17:10:14 -08:00
Christoph Lameter
53b8a315b7 [PATCH] Convert highest_possible_processor_id to nr_cpu_ids
We frequently need the maximum number of possible processors in order to
allocate arrays for all processors.  So far this was done using
highest_possible_processor_id().  However, we do need the number of
processors not the highest id.  Moreover the number was so far dynamically
calculated on each invokation.  The number of possible processors does not
change when the system is running.  We can therefore calculate that number
once.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-20 17:10:13 -08:00
Linus Torvalds
874ff01bd9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
  Documentation/kernel-docs.txt update.
  arch/cris: typo in KERN_INFO
  Storage class should be before const qualifier
  kernel/printk.c: comment fix
  update I/O sched Kconfig help texts - CFQ is now default, not AS.
  Remove duplicate listing of Cris arch from README
  kbuild: more doc. cleanups
  doc: make doc. for maxcpus= more visible
  drivers/net/eexpress.c: remove duplicate comment
  add a help text for BLK_DEV_GENERIC
  correct a dead URL in the IP_MULTICAST help text
  fix the BAYCOM_SER_HDX help text
  fix SCSI_SCAN_ASYNC help text
  trivial documentation patch for platform.txt
  Fix typos concerning hierarchy
  Fix comment typo "spin_lock_irqrestore".
  Fix misspellings of "agressive".
  drivers/scsi/a100u2w.c: trivial typo patch
  Correct trivial typo in log2.h.
  Remove useless FIND_FIRST_BIT() macro from cardbus.c.
  ...
2007-02-19 13:29:02 -08:00
Linus Torvalds
733abe4fff Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6:
  PCI: Make PCI device numa-node attribute visible in sysfs
  PCI: add systems for automatic breadth-first device sorting
  PCI: PCI devices get assigned redundant IRQs
  PCI: Make CARDBUS_MEM_SIZE and CARDBUS_IO_SIZE boot options
  PCI: pci.txt fix __devexit() usage
  PCI/sysfs/kobject kernel-doc fixes
2007-02-19 12:59:55 -08:00
Robert P. J. Day
d08df601a3 Various typo fixes.
Correct mis-spellings of "algorithm", "appear", "consistent" and
(shame, shame) "kernel".

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-02-17 19:07:33 +01:00
Randy Dunlap
f95d882d81 PCI/sysfs/kobject kernel-doc fixes
Fix kernel-doc warnings in PCI, sysfs, and kobject files.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16 15:30:10 -08:00
Martin Stoilov
1350770112 kobject: kobj->k_name verification fix
The function 'kobject_add' tries to verify the name of
a new kobject instance is properly set before continuing.
    if (!kobj->k_name)
        kobj->k_name = kobj->name;
    if (!kobj->k_name) {
        pr_debug("kobject attempted to be registered with no name!\n");
        WARN_ON(1);
        return -EINVAL;
    }
The statement:
    if (!kobj->k_name) {
        pr_debug("kobject attempted to be registered with no name!\n");
        WARN_ON(1);
        return -EINVAL;
    }
is useless the way it is right now, because it can never be true. I
think the
code was intended to be:
    if (!kobj->k_name)
        kobj->k_name = kobj->name;
    if (!*kobj->k_name) {
        pr_debug("kobject attempted to be registered with no name!\n");
        WARN_ON(1);
        return -EINVAL;
    }
because this would make sure the kobj->name buffer has something in it.
So the missing '*' is just a typo. Although, I would much prefer
expression like:
    if (*kobj->k_name == '\0') {
        pr_debug("kobject attempted to be registered with no name!\n");
        WARN_ON(1);
        return -EINVAL;
    }

because this would've made the intention clear, in this patch I just restore
the missing '*' without changing the coding style of the function.

Signed-off-by: Martin Stoilov <mstoilov@odesys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-16 15:19:17 -08:00
Ingo Molnar
82f67cd9fc [PATCH] Add debugging feature /proc/timer_stat
Add /proc/timer_stats support: debugging feature to profile timer expiration.
Both the starting site, process/PID and the expiration function is captured.
This allows the quick identification of timer event sources in a system.

Sample output:

# echo 1 > /proc/timer_stats
# cat /proc/timer_stats
Timer Stats Version: v0.1
Sample period: 4.010 s
  24,     0 swapper          hrtimer_stop_sched_tick (hrtimer_sched_tick)
  11,     0 swapper          sk_reset_timer (tcp_delack_timer)
   6,     0 swapper          hrtimer_stop_sched_tick (hrtimer_sched_tick)
   2,     1 swapper          queue_delayed_work_on (delayed_work_timer_fn)
  17,     0 swapper          hrtimer_restart_sched_tick (hrtimer_sched_tick)
   2,     1 swapper          queue_delayed_work_on (delayed_work_timer_fn)
   4,  2050 pcscd            do_nanosleep (hrtimer_wakeup)
   5,  4179 sshd             sk_reset_timer (tcp_write_timer)
   4,  2248 yum-updatesd     schedule_timeout (process_timeout)
  18,     0 swapper          hrtimer_restart_sched_tick (hrtimer_sched_tick)
   3,     0 swapper          sk_reset_timer (tcp_delack_timer)
   1,     1 swapper          neigh_table_init_no_netlink (neigh_periodic_timer)
   2,     1 swapper          e1000_up (e1000_watchdog)
   1,     1 init             schedule_timeout (process_timeout)
100 total events, 25.24 events/sec

[ cleanups and hrtimers support from Thomas Gleixner <tglx@linutronix.de> ]
[bunk@stusta.de: nr_entries can become static]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:59 -08:00
Frederik Deweerdt
fb4d64e78c [PATCH] pci_iomap_regions() error handling fix
It appears that the pcim_iomap_regions() function doesn't get the error
handling right. It BUGs early at boot with a backtrace along the lines of:

ahci_init
pci_register_driver
driver_register
[...]
ahci_init_one
pcim_iomap_region
pcim_iounmap

The following patch allows me to boot. Only the if(mask..) continue;
part fixes the problem actually, the gotos where changed so that we
don't try to unmap something we couldn't map anyway.

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:13:55 -08:00
Andrew Morton
be6b026785 [PATCH] swiotlb uninlinings
Optimise swiotlb.c for size.

   text    data     bss     dec     hex filename
   5009      89      64    5162    142a lib/swiotlb.o-before
   4666      89      64    4819    12d3 lib/swiotlb.o-after

For some reason my gcc (4.0.2) doesn't want to tailcall these things.

swiotlb_sync_sg_for_device:
	pushq	%rbp	#
	movl	$1, %r8d	#,
	movq	%rsp, %rbp	#,
	call	swiotlb_sync_sg	#
	leave
	ret
	.size	swiotlb_sync_sg_for_device, .-swiotlb_sync_sg_for_device
	.section	.text.swiotlb_sync_sg_for_cpu,"ax",@progbits
.globl swiotlb_sync_sg_for_cpu
	.type	swiotlb_sync_sg_for_cpu, @function
swiotlb_sync_sg_for_cpu:
	pushq	%rbp	#
	xorl	%r8d, %r8d	#
	movq	%rsp, %rbp	#,
	call	swiotlb_sync_sg	#
	leave
	ret

Cc: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:29 -08:00
David Woodhouse
a304e1b828 [PATCH] Debug shared irqs
Drivers registering IRQ handlers with SA_SHIRQ really ought to be able to
handle an interrupt happening before request_irq() returns.  They also
ought to be able to handle an interrupt happening during the start of their
call to free_irq().  Let's test that hypothesis....

[bunk@stusta.de: Kconfig fixes]
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:28 -08:00
Martin Peschke
ea6f3281a1 [PATCH] scnprintf(): fix a comment
The return value of scnprintf() never exceeds @size.

Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:28 -08:00
Al Viro
5ea8176994 [PATCH] sort the devres mess out
* Split the implementation-agnostic stuff in separate files.
* Make sure that targets using non-default request_irq() pull
  kernel/irq/devres.o
* Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive;
  allow architectures to turn them off (we needed these symbols anyway for
  dependencies of quite a few drivers).
* protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 11:18:07 -08:00
Robert P. J. Day
b9b2a70037 [PATCH] Remove references to obsolete kernel config option DEBUG_RWSEMS
Remove the few references to the obsolete kernel config option
DEBUG_RWSEMS.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 11:18:06 -08:00
Kirill Korotaev
e3e8a75d2a [PATCH] Extract and use wake_up_klogd()
Remove hack with printing space to wake up klogd.  Use explicit
wake_up_klogd().

See earlier discussion
http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/75f496668409f58d/1a8f28983a51e1ff?lnk=st&q=wake_up_klogd+group%3Afa.linux.kernel&rnum=2#1a8f28983a51e1ff

Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:34 -08:00