Commit Graph

5112 Commits

Author SHA1 Message Date
Teemu Likonen
0acbc6c651 Documentation: update CodingStyle tips for Emacs users
With the previous Emacs tips example the kernel style was made available
for files in the kernel-tree only. This patch updates the tip to add a
separate cc-mode indent style ("linux-tabs-only"). This makes it easy to
switch between different indent styles and also makes the kernel style
easily available for any filetype mode (c++, awk, ...) that is managed
by the Emacs cc-mode.

Signed-off-by: Teemu Likonen <tlikonen@iki.fi>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:19:29 -08:00
Randy Dunlap
5872fb94f8 Documentation: move DMA-mapping.txt to Doc/PCI/
Move DMA-mapping.txt to Documentation/PCI/.

DMA-mapping.txt was supposed to be moved from Documentation/ to
Documentation/PCI/.  The 00-INDEX files in those two directories
were updated, along with a few other text files, but the file
itself somehow escaped being moved, so move it and update more
text files and source files with its new location.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
cc:	Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:19:29 -08:00
Linus Torvalds
5488ace40b Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  driver-core: fix kernel-doc parameter name
  UIO: Add missing documentation of features added recently
  Sync patch for jp_JP/stable_kernel_rules.txt
2009-01-29 18:14:05 -08:00
Linus Torvalds
6e3eed9850 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  lguest: Fix a memory leak with the lg object during launcher close
  lguest: disable the FORTIFY for lguest.
  lguest: typos fix
2009-01-29 18:10:36 -08:00
KAMEZAWA Hiroyuki
8d50d369d1 memcg: update document to mention that swapoff should be tested
Considering the recently found problem "memcg: fix refcnt handling at
swapoff", it's better to mention swapoff behavior in the memcg_test
document.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:44 -08:00
Evgeniy Polyakov
9e9e3cbc62 mm: OOM documentation update
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:43 -08:00
Tim 'mithro' Ansell
b44d49ab09 lguest: disable the FORTIFY for lguest.
Makes all the warnings go away when compiling lguest on Ubuntu on
Intrepid or greater.

Signed-off-by: Timothy R Ansell <mithro@mithis.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-01-30 11:34:10 +10:30
Stephen Hemminger
58092d1e0a net: update documentation ip aliases
This documentation is old.  Add a short note to describe why aliases
are no long necessary, and remove the old contact/edit info.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29 16:16:31 -08:00
Artem Bityutskiy
27ad279933 UBIFS: remove fast unmounting
This UBIFS feature has never worked properly, and it was a mistake
to add it because we simply have no use-cases. So, lets still accept
the fast_unmount mount option, but ignore it. This does not change
much, because UBIFS commit in sync_fs anyway, and sync_fs is called
while unmounting.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-01-29 16:34:30 +02:00
Simon Harrison
f90c3c0bdd V4L/DVB (10210): Fix a bug on v4lgrab.c
v4lgrab  breaks the fputc macro on some systems, because of #defined
FILE.

Also, I also added comments because it was not at all clear that to get gspca
cameras to work with this application you need v4l1compat.

Signed-off-by: Simon Harrison <si1356@yahoo.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-29 08:35:37 -02:00
Hans J. Koch
6a1b699678 UIO: Add missing documentation of features added recently
The following features were added to the UIO framework in the near past:

* Generic drivers for platform devices (uio_pdrv, uio_pdrv_genirq)
* an "offset" sysfs attribute for memory mappings

Unfortunately, all this went in without documentation (won't happen again...)

This patch updates UIO documentation.

Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Uwe Kleine-König <ukleinek@strlen.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-28 15:55:48 -08:00
Tsugikazu Shibata
720893fd5f Sync patch for jp_JP/stable_kernel_rules.txt
Updated jp_JP/stable_kernel_rules.txt due to changes in the main version
of the file.

Also, this patch is already reviewed by Japanese translation community
called JF.

Signed-off-by: Tsugikazu Shibata <tshibata@ab.jp.nec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-28 15:55:48 -08:00
James Lentini
096abd7703 update port number in NFS/RDMA documentation
Update the NFS/RDMA documentation to use the new port number assigned
by IANA.

Signed-off-by: James Lentini <jlentini@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-01-27 17:20:14 -05:00
Linus Torvalds
2034563ca3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  kbuild: fix kbuild.txt typos
  kbuild: print usage with no arguments in scripts/config
  Revert "kbuild: strip generated symbols from *.ko"
2009-01-26 15:10:37 -08:00
Linus Torvalds
924d26df6b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (92 commits)
  gianfar: Revive VLAN support
  vlan: Export symbols as non GPL symbols.
  bnx2x: tx_has_work should not wait for FW
  netxen: reduce memory footprint
  netxen: fix vlan tso/checksum offload
  net: Fix linux/if_frad.h's suitability for userspace.
  net: Move config NET_NS to from net/Kconfig to init/Kconfig
  isdn: Fix missing ifdef in isdn_ppp
  networking: document "nc" in addition to "netcat" in netconsole.txt
  e1000e: workaround hw errata
  af_key: initialize xfrm encap_oa
  virtio_net: Fix MAX_PACKET_LEN to support 802.1Q VLANs
  lcs: fix compilation for !CONFIG_IP_MULTICAST
  rtl8187: Add termination packet to prevent stall
  iwlwifi: fix rs_get_rate WARN_ON()
  p54usb: fix packet loss with first generation devices
  sctp: Fix another socket race during accept/peeloff
  sctp: Properly timestamp outgoing data chunks for rtx purposes
  sctp: Correctly start rtx timer on new packet transmissions.
  sctp: Fix crc32c calculations on big-endian arhes.
  ...
2009-01-26 15:09:20 -08:00
Jesse Barnes
e955281cd6 networking: document "nc" in addition to "netcat" in netconsole.txt
It always annoyed me that the netconsole documentation didn't give me the
correct command for my distro.  Update it with a command line that actually
works on my Fedora install.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-26 12:19:23 -08:00
Takashi Iwai
092ebf7a01 Merge branch 'fix/hda' into for-linus 2009-01-23 08:13:52 +01:00
Matthew Ranostay
32ed3f4640 ALSA: hda: Add STAC92HD83XXX_PWR_REF quirk
Some revisions of the 92hd8xxx codec's not supporting port power
downs in which the using of it causes capture and also randomly
playback streams to not function at all. Thus by disabling it by
default and adding a option to enable it manually will fix all issue
on current and future revisions.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-23 08:06:57 +01:00
Henrik Kretzschmar
cd9f8e64c2 sound: Remove removed OSS kernel parameters from doc
Remove removed OSS kernel parameters from kernel-parameters.txt

Remove the kernel parameters from the OSS drivers of the chips
es1371 (removed 10-2007/2.6.24) and
cs4232 (removed 02-2008/2.6.25) from the kernel parameters documentation.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-18 11:05:31 +01:00
Len Brown
79491ca416 Merge branch 'thinkpad-acpi' into release 2009-01-16 14:45:24 -05:00
Linus Torvalds
7e92214b53 Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon: (abituguru3) Fix CONFIG_DMI=n fallback to probe
  hwmon: (abituguru3) Enable DMI probing feature on IN9 32X MAX
  hwmon: (abituguru3) Match partial DMI board name strings
  hwmon: Add a driver for the ADT7475 hardware monitoring chip
  hwmon: (k8temp) Fix temperature reporting for (most) K8 RevG CPUs
  hwmon: (k8temp) Fix wrong sensor selection for AMD K8 RevF/RevG CPUs
  hwmon: (k8temp) Warn about fam F rev F errata
2009-01-15 16:40:12 -08:00
Pavel Machek
219beb291b lis3: fix documentation to fit into 80 columns
Fix lis3 documentation to fit into 80 columns.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Cc: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:41 -08:00
Marcus Meissner
65a67bd264 Documentation/accounting/getdelays.c: fix endless loop
When no option is passed to getdelays it just hangs, waiting
for a reply which will never come.

This patch prints usage() when no output marker is specified.

Signed-off-by: Marcus Meissner <meissner@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:37 -08:00
Li Zefan
45ce80fb6b cgroups: consolidate cgroup documents
Move Documentation/cpusets.txt and Documentation/controllers/* to
Documentation/cgroups/

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:37 -08:00
Andy Whitcroft
47c33d9c19 sysrq documentation: document why the command header only is shown
Document the interactions between loglevel and the sysrq output.  Also
document how to work round it should output be required on the console.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Martin Mares <mj@ucw.cz>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:36 -08:00
Andy Whitcroft
89365e2641 sysrq documentation: remove the redundant updated date
git is maintaining the last update time much more accuratly than the
internal update time.  Remove it.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:36 -08:00
Peter W Morreale
db0fb1848a Update of Documentation: vm.txt and proc.txt
Update Documentation/sysctl/vm.txt and Documentation/filesystems/proc.txt.
 More specifically, the section on /proc/sys/vm in
Documentation/filesystems/proc.txt was removed and a link to
Documentation/sysctl/vm.txt added.

Most of the verbiage from proc.txt was simply moved in vm.txt, with new
addtional text for "swappiness" and "stat_interval".

Signed-off-by: Peter W Morreale <pmorreale@novell.com>
Acked-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>
2009-01-15 16:39:35 -08:00
Jordan Crouse
1c301fc539 hwmon: Add a driver for the ADT7475 hardware monitoring chip
Hwmon driver for the ADT7475 chip.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-15 22:27:47 +01:00
Linus Torvalds
647df5189f Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] SN specific version of dma_get_required_mask()
  [IA64] generic_defconfig: Enable SATA_VITESSE
  [IA64] dump stack on kernel unaligned warnings
  [IA64] Turn on CONFIG_HAVE_UNSTABLE_CLOCK
  [IA64] Update to use account_{steal,idle}_ticks
2009-01-15 12:56:12 -08:00
Linus Torvalds
22deb791f3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Fix invalid amp value for STAC925x
  ASoC: Fix the power update function for snd_soc_dapm_value_mux
  sound: virtuoso: do not overwrite EEPROM on Xonar D2/D2X
  ALSA: hda - Fix HP dv5 mic input
  ALSA: hda - Fix missing initialization of NID 0x0e for STAC925x
  ALSA: USB quirk for Logitech Quickcam Pro 9000 name
  ALSA: hda - Fix stac92hd83xxx_amp_nids[]
  ALSA: hda - Add automatic model setting for Samsung Q45
  ALSA: hda - Don't reset HP pinctl in patch_sigmatel.c
  ALSA: hda: stac92hd8xxx amp mixers
  ALSA: hda - Fix silent headphone output on Panasonic CF-74
  ALSA: hda - Update model descriptions in patch_sigmatel.c
  ALSA: hda - Use queue_delayed_work()
  ALSA: hda - Add quirk for another HP dv5
  ALSA: hda - Add support of NVidia MCP78 HDMI
  ALSA: hda - Fix a typo
  ALSA: hda - More fixes on Gateway entries
  ALSA: patch_sigmatel: Add missing Gateway entries and autodetection
  ALSA: hda - Add a new function to seek for a codec ID
2009-01-15 12:49:13 -08:00
Henrique de Moraes Holschuh
aa2fbcec07 ACPI: thinkpad-acpi: bump up version to 0.22
It is about time to bump up the version.

Features added since 0.21:  fan suspend/resume support, preserve radio
state across power off (for some radio types), built-in UWB radio
rfkill support and thermal alarm events support.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-15 13:48:24 -05:00
John Keller
175add1981 [IA64] SN specific version of dma_get_required_mask()
Create a platform specific version of dma_get_required_mask()
for ia64 SN Altix. All SN Altix platforms support 64 bit DMA
addressing regardless of the size of system memory.
Create an ia64 machvec for dma_get_required_mask, with the
SN version unconditionally returning DMA_64BIT_MASK.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15 10:42:16 -08:00
Henrique de Moraes Holschuh
0045c0aa7d ACPI: thinkpad-acpi: add UWB radio support
Add rfkill support for USB UWB radio devices on very recent ThinkPad
laptop models.

The new subdriver is moslty a trimmed down copy of the wwan subdriver.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-15 13:36:51 -05:00
Henrique de Moraes Holschuh
9abf0eea87 ACPI: thinkpad-acpi: update documents for the new location
Update documentation to reflect the new location of the
thinkpad-acpi driver.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-15 13:27:42 -05:00
Randy Dunlap
df291fa993 kbuild: fix kbuild.txt typos
Fix typos in the new kbuild.txt file.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-01-14 21:42:51 +01:00
Bartlomiej Zolnierkiewicz
e86c1451d3 ide: remove unused CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-14 19:19:03 +01:00
Takashi Iwai
417bec5b0f ALSA: hda - Update model descriptions in patch_sigmatel.c
Update models in patch_sigmatel.c, mainly for the last Gateway updates.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-13 17:57:12 +01:00
Linus Torvalds
3d14bdad40 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (36 commits)
  x86: fix section mismatch warnings in mcheck/mce_amd_64.c
  x86: offer frame pointers in all build modes
  x86: remove duplicated #include's
  x86: k8 numa register active regions later
  x86: update Alan Cox's email addresses
  x86: rename all fields of mpc_table mpc_X to X
  x86: rename all fields of mpc_oemtable oem_X to X
  x86: rename all fields of mpc_bus mpc_X to X
  x86: rename all fields of mpc_cpu mpc_X to X
  x86: rename all fields of mpc_intsrc mpc_X to X
  x86: rename all fields of mpc_lintsrc mpc_X to X
  x86: rename all fields of mpc_iopic mpc_X to X
  x86: irqinit_64.c init_ISA_irqs should be static
  Documentation/x86/boot.txt: payload length was changed to payload_length
  x86: setup_percpu.c fix style problems
  x86: irqinit_64.c fix style problems
  x86: irqinit_32.c fix style problems
  x86: i8259.c fix style problems
  x86: irq_32.c fix style problems
  x86: ioport.c fix style problems
  ...
2009-01-10 06:13:09 -08:00
Takashi Sato
c4be0c1dc4 filesystem freeze: add error handling of write_super_lockfs/unlockfs
Currently, ext3 in mainline Linux doesn't have the freeze feature which
suspends write requests.  So, we cannot take a backup which keeps the
filesystem's consistency with the storage device's features (snapshot and
replication) while it is mounted.

In many case, a commercial filesystem (e.g.  VxFS) has the freeze feature
and it would be used to get the consistent backup.

If Linux's standard filesystem ext3 has the freeze feature, we can do it
without a commercial filesystem.

So I have implemented the ioctls of the freeze feature.
I think we can take the consistent backup with the following steps.
1. Freeze the filesystem with the freeze ioctl.
2. Separate the replication volume or create the snapshot
   with the storage device's feature.
3. Unfreeze the filesystem with the unfreeze ioctl.
4. Take the backup from the separated replication volume
   or the snapshot.

This patch:

VFS:
Changed the type of write_super_lockfs and unlockfs from "void"
to "int" so that they can return an error.
Rename write_super_lockfs and unlockfs of the super block operation
freeze_fs and unfreeze_fs to avoid a confusion.

ext3, ext4, xfs, gfs2, jfs:
Changed the type of write_super_lockfs and unlockfs from "void"
to "int" so that write_super_lockfs returns an error if needed,
and unlockfs always returns 0.

reiserfs:
Changed the type of write_super_lockfs and unlockfs from "void"
to "int" so that they always return 0 (success) to keep a current behavior.

Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com>
Signed-off-by: Masayuki Hamaguchi <m-hamaguchi@ys.jp.nec.com>
Cc: <xfs-masters@oss.sgi.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Alasdair G Kergon <agk@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-09 16:54:42 -08:00
Linus Torvalds
31aeb6c815 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus:
  MAINTAINERS: squashfs entry
  Squashfs: documentation
  Squashfs: initrd support
  Squashfs: Kconfig entry
  Squashfs: Makefiles
  Squashfs: header files
  Squashfs: block operations
  Squashfs: cache operations
  Squashfs: uid/gid lookup operations
  Squashfs: fragment block operations
  Squashfs: export operations
  Squashfs: super block operations
  Squashfs: symlink operations
  Squashfs: regular file operations
  Squashfs: directory readdir operations
  Squashfs: directory lookup operations
  Squashfs: inode operations
2009-01-09 15:18:49 -08:00
Linus Torvalds
c40f6f8bbc Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu:
  NOMMU: Support XIP on initramfs
  NOMMU: Teach kobjsize() about VMA regions.
  FLAT: Don't attempt to expand the userspace stack to fill the space allocated
  FDPIC: Don't attempt to expand the userspace stack to fill the space allocated
  NOMMU: Improve procfs output using per-MM VMAs
  NOMMU: Make mmap allocation page trimming behaviour configurable.
  NOMMU: Make VMAs per MM as for MMU-mode linux
  NOMMU: Delete askedalloc and realalloc variables
  NOMMU: Rename ARM's struct vm_region
  NOMMU: Fix cleanup handling in ramfs_nommu_get_umapped_area()
2009-01-09 14:00:58 -08:00
Linus Torvalds
7d671f3e71 Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] update documentation for hvc_iucv kernel parameter.
  [S390] hvc_iucv: Special handling of IUCV HVC devices
  [S390] hvc_iucv: Refactor console and device initialization
  [S390] hvc_iucv: Update function documentation
  [S390] hvc_iucv: Limit rate of outgoing IUCV messages
  [S390] hvc_iucv: Change IUCV term id and use one device as default
  [S390] Use unsigned long long for u64 on 64bit.
  [S390] qdio: fix broken pointer in case of CONFIG_DEBUG_FS is disabled
  [S390] vdso: compile fix
  [S390] remove code for oldselect system call
  [S390] types: add/fix types.h include in header files
  [S390] dasd: add device attribute to disable blocking on lost paths
  [S390] dasd: send change uevents for dasd block devices
  [S390] tape block: fix dependencies
  [S390] asm-s390/posix_types.h: drop __USE_ALL usage
  [S390] gettimeofday.S: removed duplicated #includes
  [S390] ptrace: no extern declarations for userspace
2009-01-09 13:56:06 -08:00
Linus Torvalds
73d59314e6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (864 commits)
  Btrfs: explicitly mark the tree log root for writeback
  Btrfs: Drop the hardware crc32c asm code
  Btrfs: Add Documentation/filesystem/btrfs.txt, remove old COPYING
  Btrfs: kmap_atomic(KM_USER0) is safe for btrfs_readpage_end_io_hook
  Btrfs: Don't use kmap_atomic(..., KM_IRQ0) during checksum verifies
  Btrfs: tree logging checksum fixes
  Btrfs: don't change file extent's ram_bytes in btrfs_drop_extents
  Btrfs: Use btrfs_join_transaction to avoid deadlocks during snapshot creation
  Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code
  Btrfs: drop EXPORT symbols from extent_io.c
  Btrfs: Fix checkpatch.pl warnings
  Btrfs: Fix free block discard calls down to the block layer
  Btrfs: avoid orphan inode caused by log replay
  Btrfs: avoid potential super block corruption
  Btrfs: do not call kfree if kmalloc failed in btrfs_sysfs_add_super
  Btrfs: fix a memory leak in btrfs_get_sb
  Btrfs: Fix typo in clear_state_cb
  Btrfs: Fix memset length in btrfs_file_write
  Btrfs: update directory's size when creating subvol/snapshot
  Btrfs: add permission checks to the ioctls
  ...
2009-01-09 13:01:38 -08:00
Linus Torvalds
7c51d57e9d Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (67 commits)
  [MTD] [MAPS] Fix printk format warning in nettel.c
  [MTD] [NAND] add cmdline parsing (mtdparts=) support to cafe_nand
  [MTD] CFI: remove major/minor version check for command set 0x0002
  [MTD] [NAND] ndfc driver
  [MTD] [TESTS] Fix some size_t printk format warnings
  [MTD] LPDDR Makefile and KConfig
  [MTD] LPDDR extended physmap driver to support LPDDR flash
  [MTD] LPDDR added new pfow_base parameter
  [MTD] LPDDR Command set driver
  [MTD] LPDDR PFOW definition
  [MTD] LPDDR QINFO records definitions
  [MTD] LPDDR qinfo probing.
  [MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately
  [MTD] [NAND] pxa3xx: fix non-page-aligned reads
  [MTD] [NAND] fix nandsim sched.h references
  [MTD] [NAND] alauda: use USB API functions rather than constants
  [MTD] struct device - replace bus_id with dev_name(), dev_set_name()
  [MTD] fix m25p80 64-bit divisions
  [MTD] fix dataflash 64-bit divisions
  [MTD] [NAND] Set the fsl elbc ECCM according the settings in bootloader.
  ...

Fixed up trivial debug conflicts in drivers/mtd/devices/{m25p80.c,mtd_dataflash.c}
2009-01-09 12:37:15 -08:00
Linus Torvalds
a3a798c88a Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (94 commits)
  ACPICA: hide private headers
  ACPICA: create acpica/ directory
  ACPI: fix build warning
  ACPI : Use RSDT instead of XSDT by adding boot option of "acpi=rsdt"
  ACPI: Avoid array address overflow when _CST MWAIT hint bits are set
  fujitsu-laptop: Simplify SBLL/SBL2 backlight handling
  fujitsu-laptop: Add BL power, LED control and radio state information
  ACPICA: delete utcache.c
  ACPICA: delete acdisasm.h
  ACPICA: Update version to 20081204.
  ACPICA: FADT: Update error msgs for consistency
  ACPICA: FADT: set acpi_gbl_use_default_register_widths to TRUE by default
  ACPICA: FADT parsing changes and fixes
  ACPICA: Add ACPI_MUTEX_TYPE configuration option
  ACPICA: Fixes for various ACPI data tables
  ACPICA: Restructure includes into public/private
  ACPI: remove private acpica headers from driver files
  ACPI: reboot.c: use new acpi_reset interface
  ACPICA: New: acpi_reset interface - write to reset register
  ACPICA: Move all public H/W interfaces to new hwxface
  ...
2009-01-09 11:55:14 -08:00
Linus Torvalds
d9e8a3a5b8 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (22 commits)
  ioat: fix self test for multi-channel case
  dmaengine: bump initcall level to arch_initcall
  dmaengine: advertise all channels on a device to dma_filter_fn
  dmaengine: use idr for registering dma device numbers
  dmaengine: add a release for dma class devices and dependent infrastructure
  ioat: do not perform removal actions at shutdown
  iop-adma: enable module removal
  iop-adma: kill debug BUG_ON
  iop-adma: let devm do its job, don't duplicate free
  dmaengine: kill enum dma_state_client
  dmaengine: remove 'bigref' infrastructure
  dmaengine: kill struct dma_client and supporting infrastructure
  dmaengine: replace dma_async_client_register with dmaengine_get
  atmel-mci: convert to dma_request_channel and down-level dma_slave
  dmatest: convert to dma_request_channel
  dmaengine: introduce dma_request_channel and private channels
  net_dma: convert to dma_find_channel
  dmaengine: provide a common 'issue_pending_all' implementation
  dmaengine: centralize channel allocation, introduce dma_find_channel
  dmaengine: up-level reference counting to the module level
  ...
2009-01-09 11:52:14 -08:00
Hendrik Brueckner
555d61d654 [S390] update documentation for hvc_iucv kernel parameter.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-01-09 12:15:10 +01:00
Len Brown
b2576e1d44 Merge branch 'linus' into release 2009-01-09 03:39:43 -05:00
Len Brown
3cc8a5f4ba Merge branch 'suspend' into release 2009-01-09 03:38:15 -05:00
Zhao Yakui
237889bf0a ACPI : Use RSDT instead of XSDT by adding boot option of "acpi=rsdt"
On some boxes there exist both RSDT and XSDT table. But unfortunately
sometimes there exists the following error when XSDT table is used:
   a. 32/64X address mismatch
   b. The 32/64X FACS address mismatch

   In such case the boot option of "acpi=rsdt" is provided so that
RSDT is tried instead of XSDT table when the system can't work well.

http://bugzilla.kernel.org/show_bug.cgi?id=8246

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
cc:Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09 01:41:58 -05:00
Linus Torvalds
2150edc6c5 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (57 commits)
  jbd2: Fix oops in jbd2_journal_init_inode() on corrupted fs
  ext4: Remove "extents" mount option
  block: Add Kconfig help which notes that ext4 needs CONFIG_LBD
  ext4: Make printk's consistently prefixed with "EXT4-fs: "
  ext4: Add sanity checks for the superblock before mounting the filesystem
  ext4: Add mount option to set kjournald's I/O priority
  jbd2: Submit writes to the journal using WRITE_SYNC
  jbd2: Add pid and journal device name to the "kjournald2 starting" message
  ext4: Add markers for better debuggability
  ext4: Remove code to create the journal inode
  ext4: provide function to release metadata pages under memory pressure
  ext3: provide function to release metadata pages under memory pressure
  add releasepage hooks to block devices which can be used by file systems
  ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc
  ext4: Init the complete page while building buddy cache
  ext4: Don't allow new groups to be added during block allocation
  ext4: mark the blocks/inode bitmap beyond end of group as used
  ext4: Use new buffer_head flag to check uninit group bitmaps initialization
  ext4: Fix the race between read_inode_bitmap() and ext4_new_inode()
  ext4: code cleanup
  ...
2009-01-08 17:14:59 -08:00
Linus Torvalds
1df2d017fe Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
* 'docs-next' of git://git.lwn.net/linux-2.6:
  Fix a typo in the development process document.
  Document handling of bad memory
  Document RCU and unloadable modules
2009-01-08 15:52:13 -08:00
Jonathan Corbet
d5b524327b Fix a typo in the development process document.
Reported-by: Aníbal Monsalve Salazar <anibal@debian.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2009-01-08 16:32:13 -07:00
Linus Torvalds
022992ee59 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator: fix kernel-doc warnings
  regulator: catch some registration errors
  regulator: Add basic DocBook manual
  regulator: Fix some kerneldoc rendering issues
  regulator: Add missing kerneldoc
  regulator: Clean up kerneldoc warnings
  regulator: Remove extraneous kerneldoc annotations
  regulator: init/link earlier
  regulator: move set_machine_constraints after regulator device initialization
  regulator: da903x: make da903x_is_enabled return 0 or 1
  regulator: da903x: add '\n' to error messages
  regulator: sysfs attribute reduction (v2)
  regulator: code shrink (v2)
  regulator: improved mode error checks
  regulator: enable/disable refcounting
  regulator: struct device - replace bus_id with dev_name(), dev_set_name()
2009-01-08 14:51:11 -08:00
Mark Brown
9fe5817f19 regulator: Add basic DocBook manual
Add a basic DocBook manual for the regulator API. This is much more
skeletal than the existing text documentation, the main benefit is to
provide a skeleton for automatic generation of a manual based on the
kerneldoc for the API.

Since large portions of the text are lifted from the existing text format
documentation written by Liam Girdwood much of the credit belongs to
him.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2009-01-08 20:10:34 +00:00
David Brownell
7ad68e2f97 regulator: sysfs attribute reduction (v2)
Clean up the sysfs interface to regulators by only exposing the
attributes that can be properly displayed.  For example: when a
particular regulator method is needed to display the value, only
create that attribute when that method exists.

This cleaned-up interface is much more comprehensible.  Most
regulators only support a subset of the possible methods, so
often more than half the attributes would be meaningless.  Many
"not defined" values are no longer necessary.  (But handling
of out-of-range values still looks a bit iffy.)

Documentation is updated to reflect that few of the attributes
are *always* present, and to briefly explain why a regulator may
not have a given attribute.

This adds object code, about a dozen bytes more than was removed
by the preceding patch, but saves a bunch of per-regulator data
associated with the now-removed attributes.  So there's a net
reduction in memory footprint.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2009-01-08 20:10:30 +00:00
Linus Torvalds
85da1fb545 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (53 commits)
  serial: Add driver for the Cell Network Processor serial port NWP device
  powerpc: enable dynamic ftrace
  powerpc/cell: Fix the prototype of create_vma_map()
  powerpc/mm: Make clear_fixmap() actually work
  powerpc/kdump: Use ppc_save_regs() in crash_setup_regs()
  powerpc: Export cacheable_memzero as its now used in a driver
  powerpc: Fix missing semicolons in mmu_decl.h
  powerpc/pasemi: local_irq_save uses an unsigned long
  powerpc/cell: Fix some u64 vs. long types
  powerpc/cell: Use correct types in beat files
  powerpc: Use correct type in prom_init.c
  powerpc: Remove unnecessary casts
  mtd/ps3vram: Use _PAGE_NO_CACHE in memory ioremap
  mtd/ps3vram: Use msleep in waits
  mtd/ps3vram: Use proper kernel types
  mtd/ps3vram: Cleanup ps3vram driver messages
  mtd/ps3vram: Remove ps3vram debug routines
  mtd/ps3vram: Add modalias support to the ps3vram driver
  mtd/ps3vram: Add ps3vram driver for accessing video RAM as MTD
  powerpc: Fix iseries drivers build failure without CONFIG_VIOPATH
  ...
2009-01-08 09:10:16 -08:00
Coly Li
73ac36ea14 fix similar typos to successfull
When I review ocfs2 code, find there are 2 typos to "successfull".  After
doing grep "successfull " in kernel tree, 22 typos found totally -- great
minds always think alike :)

This patch fixes all the similar typos. Thanks for Randy's ack and comments.

Signed-off-by: Coly Li <coyli@suse.de>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jeremy Kerr <jk@ozlabs.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:15 -08:00
Evgeniy Polyakov
4037014e3f w1: send status messages after command processing
Send completion status of the commands to the userspace.  Message and
protocol are described in the documentation.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Paul Alfille <paul.alfille@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:14 -08:00
Evgeniy Polyakov
f89735c4e2 w1: added w1 reset command
Command which allows to reset the bus.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Paul Alfille <paul.alfille@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:14 -08:00
Evgeniy Polyakov
e4e056aa35 w1: documentation update
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:13 -08:00
Sascha Hauer
a5fd9139f7 w1: add 1-wire master driver for i.MX27 / i.MX31
This patch adds support for the 1-wire master interface for i.MX27 and
i.MX31.

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:13 -08:00
Paul Menage
999cd8a450 cgroups: add a per-subsystem hierarchy_mutex
These patches introduce new locking/refcount support for cgroups to
reduce the need for subsystems to call cgroup_lock(). This will
ultimately allow the atomicity of cgroup_rmdir() (which was removed
recently) to be restored.

These three patches give:

1/3 - introduce a per-subsystem hierarchy_mutex which a subsystem can
     use to prevent changes to its own cgroup tree

2/3 - use hierarchy_mutex in place of calling cgroup_lock() in the
     memory controller

3/3 - introduce a css_tryget() function similar to the one recently
      proposed by Kamezawa, but avoiding spurious refcount failures in
      the event of a race between a css_tryget() and an unsuccessful
      cgroup_rmdir()

Future patches will likely involve:

- using hierarchy mutex in place of cgroup_lock() in more subsystems
 where appropriate

- restoring the atomicity of cgroup_rmdir() with respect to cgroup_create()

This patch:

Add a hierarchy_mutex to the cgroup_subsys object that protects changes to
the hierarchy observed by that subsystem.  It is taken by the cgroup
subsystem (in addition to cgroup_mutex) for the following operations:

- linking a cgroup into that subsystem's cgroup tree
- unlinking a cgroup from that subsystem's cgroup tree
- moving the subsystem to/from a hierarchy (including across the
  bind() callback)

Thus if the subsystem holds its own hierarchy_mutex, it can safely
traverse its own hierarchy.

Signed-off-by: Paul Menage <menage@google.com>
Tested-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:10 -08:00
KAMEZAWA Hiroyuki
03f3c43364 memcg: fix swap accounting leak
Fix swapin charge operation of memcg.

Now, memcg has hooks to swap-out operation and checks SwapCache is really
unused or not.  That check depends on contents of struct page.  I.e.  If
PageAnon(page) && page_mapped(page), the page is recoginized as
still-in-use.

Now, reuse_swap_page() calles delete_from_swap_cache() before establishment
of any rmap. Then, in followinig sequence

	(Page fault with WRITE)
	try_charge() (charge += PAGESIZE)
	commit_charge() (Check page_cgroup is used or not..)
	reuse_swap_page()
		-> delete_from_swapcache()
			-> mem_cgroup_uncharge_swapcache() (charge -= PAGESIZE)
	......
New charge is uncharged soon....
To avoid this,  move commit_charge() after page_mapcount() goes up to 1.
By this,

	try_charge()		(usage += PAGESIZE)
	reuse_swap_page()	(may usage -= PAGESIZE if PCG_USED is set)
	commit_charge()		(If page_cgroup is not marked as PCG_USED,
				 add new charge.)
Accounting will be correct.

Changelog (v2) -> (v3)
  - fixed invalid charge to swp_entry==0.
  - updated documentation.
Changelog (v1) -> (v2)
  - fixed comment.

[nishimura@mxp.nes.nec.co.jp: swap accounting leak doc fix]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Tested-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:10 -08:00
KAMEZAWA Hiroyuki
9836d89191 memcg: explain details and test document
Documentation for implementation details and how to test.

Just an example. feel free to modify, add, remove lines.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:09 -08:00
KOSAKI Motohiro
a7885eb8ad memcg: swappiness
Currently, /proc/sys/vm/swappiness can change swappiness ratio for global
reclaim.  However, memcg reclaim doesn't have tuning parameter for itself.

In general, the optimal swappiness depend on workload.  (e.g.  hpc
workload need to low swappiness than the others.)

Then, per cgroup swappiness improve administrator tunability.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:08 -08:00
KOSAKI Motohiro
7f016ee8b6 memcg: show reclaim stat
Add the following four fields to memory.stat file:

  - inactive_ratio
  - recent_rotated_anon
  - recent_rotated_file
  - recent_scanned_anon
  - recent_scanned_file

Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:08 -08:00
Balbir Singh
52bc0d8210 memcg: memory cgroup hierarchy documentation
Documentation updates for hierarchy support

Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Cc: Paul Menage <menage@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:05 -08:00
KAMEZAWA Hiroyuki
8c7c6e34a1 memcg: mem+swap controller core
This patch implements per cgroup limit for usage of memory+swap.  However
there are SwapCache, double counting of swap-cache and swap-entry is
avoided.

Mem+Swap controller works as following.
  - memory usage is limited by memory.limit_in_bytes.
  - memory + swap usage is limited by memory.memsw_limit_in_bytes.

This has following benefits.
  - A user can limit total resource usage of mem+swap.

    Without this, because memory resource controller doesn't take care of
    usage of swap, a process can exhaust all the swap (by memory leak.)
    We can avoid this case.

    And Swap is shared resource but it cannot be reclaimed (goes back to memory)
    until it's used. This characteristic can be trouble when the memory
    is divided into some parts by cpuset or memcg.
    Assume group A and group B.
    After some application executes, the system can be..

    Group A -- very large free memory space but occupy 99% of swap.
    Group B -- under memory shortage but cannot use swap...it's nearly full.

    Ability to set appropriate swap limit for each group is required.

Maybe someone wonder "why not swap but mem+swap ?"

  - The global LRU(kswapd) can swap out arbitrary pages. Swap-out means
    to move account from memory to swap...there is no change in usage of
    mem+swap.

    In other words, when we want to limit the usage of swap without affecting
    global LRU, mem+swap limit is better than just limiting swap.

Accounting target information is stored in swap_cgroup which is
per swap entry record.

Charge is done as following.
  map
    - charge  page and memsw.

  unmap
    - uncharge page/memsw if not SwapCache.

  swap-out (__delete_from_swap_cache)
    - uncharge page
    - record mem_cgroup information to swap_cgroup.

  swap-in (do_swap_page)
    - charged as page and memsw.
      record in swap_cgroup is cleared.
      memsw accounting is decremented.

  swap-free (swap_free())
    - if swap entry is freed, memsw is uncharged by PAGE_SIZE.

There are people work under never-swap environments and consider swap as
something bad. For such people, this mem+swap controller extension is just an
overhead.  This overhead is avoided by config or boot option.
(see Kconfig. detail is not in this patch.)

TODO:
 - maybe more optimization can be don in swap-in path. (but not very safe.)
   But we just do simple accounting at this stage.

[nishimura@mxp.nes.nec.co.jp: make resize limit hold mutex]
[hugh@veritas.com: memswap controller core swapcache fixes]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:05 -08:00
KAMEZAWA Hiroyuki
c077719be8 memcg: mem+swap controller Kconfig
Config and control variable for mem+swap controller.

This patch adds CONFIG_CGROUP_MEM_RES_CTLR_SWAP
(memory resource controller swap extension.)

For accounting swap, it's obvious that we have to use additional memory to
remember "who uses swap".  This adds more overhead.  So, it's better to
offer "choice" to users.  This patch adds 2 choices.

This patch adds 2 parameters to enable swap extension or not.
  - CONFIG
  - boot option

Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:05 -08:00
KAMEZAWA Hiroyuki
d13d144309 memcg: handle swap caches
SwapCache support for memory resource controller (memcg)

Before mem+swap controller, memcg itself should handle SwapCache in proper
way.  This is cut-out from it.

In current memcg, SwapCache is just leaked and the user can create tons of
SwapCache.  This is a leak of account and should be handled.

SwapCache accounting is done as following.

  charge (anon)
	- charged when it's mapped.
	  (because of readahead, charge at add_to_swap_cache() is not sane)
  uncharge (anon)
	- uncharged when it's dropped from swapcache and fully unmapped.
	  means it's not uncharged at unmap.
	  Note: delete from swap cache at swap-in is done after rmap information
	        is established.
  charge (shmem)
	- charged at swap-in. this prevents charge at add_to_page_cache().

  uncharge (shmem)
	- uncharged when it's dropped from swapcache and not on shmem's
	  radix-tree.

  at migration, check against 'old page' is modified to handle shmem.

Comparing to the old version discussed (and caused troubles), we have
advantages of
  - PCG_USED bit.
  - simple migrating handling.

So, situation is much easier than several months ago, maybe.

[hugh@veritas.com: memcg: handle swap caches build fix]
Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Tested-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:05 -08:00
KAMEZAWA Hiroyuki
c1e862c1f5 memcg: new force_empty to free pages under group
By memcg-move-all-accounts-to-parent-at-rmdir.patch, there is no leak of
memory usage and force_empty is removed.

This patch adds "force_empty" again, in reasonable manner.

memory.force_empty file works when

  #echo 0 (or some) > memory.force_empty
  and have following function.

  1. only works when there are no task in this cgroup.
  2. free all page under this cgroup as much as possible.
  3. page which cannot be freed will be moved up to parent.
  4. Then, memcg will be empty after above echo returns.

This is much better behavior than old "force_empty" which just forget
all accounts. This patch also check signal_pending() and above "echo"
can be stopped by "Ctrl-C".

[akpm@linux-foundation.org: cleanup]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:04 -08:00
KAMEZAWA Hiroyuki
f817ed4853 memcg: move all acccounting to parent at rmdir()
This patch provides a function to move account information of a page
between mem_cgroups and rewrite force_empty to make use of this.

This moving of page_cgroup is done under
 - lru_lock of source/destination mem_cgroup is held.
 - lock_page_cgroup() is held.

Then, a routine which touches pc->mem_cgroup without lock_page_cgroup()
should confirm pc->mem_cgroup is still valid or not.  Typical code can be
following.

(while page is not under lock_page())
	mem = pc->mem_cgroup;
	mz = page_cgroup_zoneinfo(pc)
	spin_lock_irqsave(&mz->lru_lock);
	if (pc->mem_cgroup == mem)
		...../* some list handling */
	spin_unlock_irqrestore(&mz->lru_lock);

Of course, better way is
	lock_page_cgroup(pc);
	....
	unlock_page_cgroup(pc);

But you should confirm the nest of lock and avoid deadlock.

If you treats page_cgroup from mem_cgroup's LRU under mz->lru_lock,
you don't have to worry about what pc->mem_cgroup points to.
moved pages are added to head of lru, not to tail.

Expected users of this routine is:
  - force_empty (rmdir)
  - moving tasks between cgroup (for moving account information.)
  - hierarchy (maybe useful.)

force_empty(rmdir) uses this move_account and move pages to its parent.
This "move" will not cause OOM (I added "oom" parameter to try_charge().)

If the parent is busy (not enough memory), force_empty calls try_to_free_page()
and reduce usage.

Purpose of this behavior is
  - Fix "forget all" behavior of force_empty and avoid leak of accounting.
  - By "moving first, free if necessary", keep pages on memory as much as
    possible.

Adding a switch to change behavior of force_empty to
  - free first, move if necessary
  - free all, if there is mlocked/busy pages, return -EBUSY.
is under consideration. (I'll add if someone requtests.)

This patch also removes memory.force_empty file, a brutal debug-only interface.

Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Tested-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:04 -08:00
Li Zefan
18e7f1f0d3 cgroups: documentation updates
- remove 'releasable' since it has been moved to the debug subsys.
- update lock requirements of subsys callbacks.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:01 -08:00
Paul Mundt
dd8632a12e NOMMU: Make mmap allocation page trimming behaviour configurable.
NOMMU mmap allocates a piece of memory for an mmap that's rounded up in size to
the nearest power-of-2 number of pages.  Currently it then discards the excess
pages back to the page allocator, making that memory available for use by other
things.  This can, however, cause greater amount of fragmentation.

To counter this, a sysctl is added in order to fine-tune the trimming
behaviour.  The default behaviour remains to trim pages aggressively, while
this can either be disabled completely or set to a higher page-granular
watermark in order to have finer-grained control.

vm region vm_top bits taken from an earlier patch by David Howells.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Mike Frysinger <vapier.adi@gmail.com>
2009-01-08 12:04:47 +00:00
David Howells
8feae13110 NOMMU: Make VMAs per MM as for MMU-mode linux
Make VMAs per mm_struct as for MMU-mode linux.  This solves two problems:

 (1) In SYSV SHM where nattch for a segment does not reflect the number of
     shmat's (and forks) done.

 (2) In mmap() where the VMA's vm_mm is set to point to the parent mm by an
     exec'ing process when VM_EXECUTABLE is specified, regardless of the fact
     that a VMA might be shared and already have its vm_mm assigned to another
     process or a dead process.

A new struct (vm_region) is introduced to track a mapped region and to remember
the circumstances under which it may be shared and the vm_list_struct structure
is discarded as it's no longer required.

This patch makes the following additional changes:

 (1) Regions are now allocated with alloc_pages() rather than kmalloc() and
     with no recourse to __GFP_COMP, so the pages are not composite.  Instead,
     each page has a reference on it held by the region.  Anything else that is
     interested in such a page will have to get a reference on it to retain it.
     When the pages are released due to unmapping, each page is passed to
     put_page() and will be freed when the page usage count reaches zero.

 (2) Excess pages are trimmed after an allocation as the allocation must be
     made as a power-of-2 quantity of pages.

 (3) VMAs are added to the parent MM's R/B tree and mmap lists.  As an MM may
     end up with overlapping VMAs within the tree, the VMA struct address is
     appended to the sort key.

 (4) Non-anonymous VMAs are now added to the backing inode's prio list.

 (5) Holes may be punched in anonymous VMAs with munmap(), releasing parts of
     the backing region.  The VMA and region structs will be split if
     necessary.

 (6) sys_shmdt() only releases one attachment to a SYSV IPC shared memory
     segment instead of all the attachments at that addresss.  Multiple
     shmat()'s return the same address under NOMMU-mode instead of different
     virtual addresses as under MMU-mode.

 (7) Core dumping for ELF-FDPIC requires fewer exceptions for NOMMU-mode.

 (8) /proc/maps is now the global list of mapped regions, and may list bits
     that aren't actually mapped anywhere.

 (9) /proc/meminfo gains a line (tagged "MmapCopy") that indicates the amount
     of RAM currently allocated by mmap to hold mappable regions that can't be
     mapped directly.  These are copies of the backing device or file if not
     anonymous.

These changes make NOMMU mode more similar to MMU mode.  The downside is that
NOMMU mode requires some extra memory to track things over NOMMU without this
patch (VMAs are no longer shared, and there are now region structs).

Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Mike Frysinger <vapier.adi@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
2009-01-08 12:04:47 +00:00
Benjamin Herrenschmidt
24f030175d Merge commit 'origin/master' into next 2009-01-08 16:24:38 +11:00
Linus Torvalds
b424e8d3b4 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (98 commits)
  PCI PM: Put PM callbacks in the order of execution
  PCI PM: Run default PM callbacks for all devices using new framework
  PCI PM: Register power state of devices during initialization
  PCI PM: Call pci_fixup_device from legacy routines
  PCI PM: Rearrange code in pci-driver.c
  PCI PM: Avoid touching devices behind bridges in unknown state
  PCI PM: Move pci_has_legacy_pm_support
  PCI PM: Power-manage devices without drivers during suspend-resume
  PCI PM: Add suspend counterpart of pci_reenable_device
  PCI PM: Fix poweroff and restore callbacks
  PCI: Use msleep instead of cpu_relax during ASPM link retraining
  PCI: PCIe portdrv: Add kerneldoc comments to remining core funtions
  PCI: PCIe portdrv: Rearrange code so that related things are together
  PCI: PCIe portdrv: Fix suspend and resume of PCI Express port services
  PCI: PCIe portdrv: Add kerneldoc comments to some core functions
  x86/PCI: Do not use interrupt links for devices using MSI-X
  net: sfc: Use pci_clear_master() to disable bus mastering
  PCI: Add pci_clear_master() as opposite of pci_set_master()
  PCI hotplug: remove redundant test in cpq hotplug
  PCI: pciehp: cleanup register and field definitions
  ...
2009-01-07 15:41:01 -08:00
Linus Torvalds
7c7758f99d Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (123 commits)
  wimax/i2400m: add CREDITS and MAINTAINERS entries
  wimax: export linux/wimax.h and linux/wimax/i2400m.h with headers_install
  i2400m: Makefile and Kconfig
  i2400m/SDIO: TX and RX path backends
  i2400m/SDIO: firmware upload backend
  i2400m/SDIO: probe/disconnect, dev init/shutdown and reset backends
  i2400m/SDIO: header for the SDIO subdriver
  i2400m/USB: TX and RX path backends
  i2400m/USB: firmware upload backend
  i2400m/USB: probe/disconnect, dev init/shutdown and reset backends
  i2400m/USB: header for the USB bus driver
  i2400m: debugfs controls
  i2400m: various functions for device management
  i2400m: RX and TX data/control paths
  i2400m: firmware loading and bootrom initialization
  i2400m: linkage to the networking stack
  i2400m: Generic probe/disconnect, reset and message passing
  i2400m: host/device procotol and core driver definitions
  i2400m: documentation and instructions for usage
  wimax: Makefile, Kconfig and docbook linkage for the stack
  ...
2009-01-07 15:37:24 -08:00
Linus Torvalds
c6906a2cb7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  kbuild: fix typos (s/bin_shipped/bin.o_shipped/) in Documentation
  kbuild: add a symlink to the source for separate objdirs
  kconfig: add script to manipulate .config files on the command line
  kbuild: reintroduce ALLSOURCE_ARCHS support for tags/cscope
  bootchart: improve output based on Dave Jones' feedback
  fix modules_install via NFS
  qnx: include <linux/types.h> for definitions of __[us]{8,16,32,64} types
2009-01-07 13:11:28 -08:00
Wolfram Sang
baa91878ab kbuild: fix typos (s/bin_shipped/bin.o_shipped/) in Documentation
The text always mentions ...bin.o_shipped, just the example makefiles
actually use ...bin_shipped. It was corrected in one place some time
ago, these ones seem to have been forgotten.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-01-07 21:44:23 +01:00
Jike Song
4f628248a5 kbuild: reintroduce ALLSOURCE_ARCHS support for tags/cscope
This patch reintroduce the ALLSOURCE_ARCHS support for tags/TAGS/
cscope targets. The Kbuild previously has this feature, but after
moving the targets into scripts/tags.sh, ALLSOURCE_ARCHS disappears.

It's something like this:

	$ make ALLSOURCE_ARCHS="x86 mips arm" tags cscope

Signed-off-by: Jike Song <albcamus@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-01-07 21:44:21 +01:00
Linus Torvalds
a0c9f240a9 Merge branch 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
* 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc:
  proc: remove write-only variable in proc_pident_lookup()
  proc: fix sparse warning
  proc: add /proc/*/stack
  proc: remove '##' usage
  proc: remove useless WARN_ONs
  proc: stop using BKL
2009-01-07 12:01:06 -08:00
Linus Torvalds
5bb47b9ff3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (171 commits)
  Blackfin arch: fix bug - BF527 0.2 silicon has different CPUID (DSPID) value
  Blackfin arch: Enlarge flash partition for kenel for bf533/bf537 boards
  Blackfin arch: fix bug: kernel crash when enable SDIO host driver
  Blackfin arch: Print FP at level KERN_NOTICE
  Blackfin arch: drop ad73311 test code
  Blackfin arch: update board default configs
  Blackfin arch: Set PB4 as the default irq for bf548 board v1.4+.
  Blackfin arch: fix typo in early printk bit size processing
  Blackfin arch: enable reprogram cclk and sclk for bf518f-ezbrd
  Blackfin arch: add SDIO host driver platform data
  Blackfin arch: fix bug - kernel stops at initial console
  Blackfin arch: fix bug - kernel crash after config IP for ethernet port
  Blackfin arch: add sdh support for bf518f-ezbrd
  Blackfin arch: fix bug - kernel detects BF532 incorrectly
  Blackfin arch: add () to avoid warnings from gcc
  Blackfin arch: change HWTRACE Kconfig and set it on default
  Blackfin arch: Clean oprofile build path for blackfin
  Blackfin arch: remove hardware PM code, oprofile not use it
  Blackfin arch: rewrite get_sclk()/get_vco()
  Blackfin arch: cleanup and unify the ins functions
  ...
2009-01-07 12:00:25 -08:00
Linus Torvalds
2f2408a88c Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (29 commits)
  hwmon: Fix various typos
  hwmon: Check for ACPI resource conflicts
  hwmon: (lm70) Add TI TMP121 support
  hwmon: (lm70) Code streamlining and cleanup
  hwmon: Deprecate the fscher and fscpos drivers
  hwmon: (fschmd) Add watchdog support
  hwmon: (fschmd) Cleanups for watchdog support
  hwmon: (i5k_amb) Load automatically on all 5000/5400 chipsets
  hwmon: (it87) Add support for the ITE IT8720F
  hwmon: Don't overuse I2C_CLIENT_MODULE_PARM
  hwmon: Add LTC4245 driver
  hwmon: (f71882fg) Fix fan_to/from_reg prototypes
  hwmon: (f71882fg) Printout fan modes
  hwmon: (f71882fg) Add documentation
  hwmon: (f71882fg) Fix auto_channels_temp temp numbering with f8000
  hwmon: (f71882fg) Add missing pwm3 attr for f71862fg
  hwmon: (f71882fg) Add F8000 support
  hwmon: (f71882fg) Remove the fan_mode module option
  hwmon: (f71882fg) Separate max and crit alarm and beep
  hwmon: (f71882fg) Check for hwmon powerdown state
  ...
2009-01-07 11:59:51 -08:00
Linus Torvalds
57c44c5f6f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits)
  trivial: chack -> check typo fix in main Makefile
  trivial: Add a space (and a comma) to a printk in 8250 driver
  trivial: Fix misspelling of "firmware" in docs for ncr53c8xx/sym53c8xx
  trivial: Fix misspelling of "firmware" in powerpc Makefile
  trivial: Fix misspelling of "firmware" in usb.c
  trivial: Fix misspelling of "firmware" in qla1280.c
  trivial: Fix misspelling of "firmware" in a100u2w.c
  trivial: Fix misspelling of "firmware" in megaraid.c
  trivial: Fix misspelling of "firmware" in ql4_mbx.c
  trivial: Fix misspelling of "firmware" in acpi_memhotplug.c
  trivial: Fix misspelling of "firmware" in ipw2100.c
  trivial: Fix misspelling of "firmware" in atmel.c
  trivial: Fix misspelled firmware in Kconfig
  trivial: fix an -> a typos in documentation and comments
  trivial: fix then -> than typos in comments and documentation
  trivial: update Jesper Juhl CREDITS entry with new email
  trivial: fix singal -> signal typo
  trivial: Fix incorrect use of "loose" in event.c
  trivial: printk: fix indentation of new_text_line declaration
  trivial: rtc-stk17ta8: fix sparse warning
  ...
2009-01-07 11:31:52 -08:00
Ben Hutchings
6a479079c0 PCI: Add pci_clear_master() as opposite of pci_set_master()
During an online device reset it may be useful to disable bus-mastering.
pci_disable_device() does that, and far more besides, so is not suitable
for an online reset.

Add pci_clear_master() which does just this.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07 11:13:23 -08:00
Arjan van de Ven
e8de1481fd resource: allow MMIO exclusivity for device drivers
Device drivers that use pci_request_regions() (and similar APIs) have a
reasonable expectation that they are the only ones accessing their device.
As part of the e1000e hunt, we were afraid that some userland (X or some
bootsplash stuff) was mapping the MMIO region that the driver thought it
had exclusively via /dev/mem or via various sysfs resource mappings.

This patch adds the option for device drivers to cause their reserved
regions to the "banned from /dev/mem use" list, so now both kernel memory
and device-exclusive MMIO regions are banned.
NOTE: This is only active when CONFIG_STRICT_DEVMEM is set.

In addition to the config option, a kernel parameter iomem=relaxed is
provided for the cases where developers want to diagnose, in the field,
drivers issues from userspace.

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07 11:12:32 -08:00
Inaky Perez-Gonzalez
3e91029ae0 i2400m: documentation and instructions for usage
The driver for the i2400m is a stacked driver. There is a core driver,
the bus-generic driver that has no knowledge or dependencies on how
the device is connected to the system; it only knows how to speak the
device protocol. Then there are the bus-specific drivers (for USB and
SDIO) that provide backends for the generic driver to communicate with
the device.

The bus generic driver connects to the network and WiMAX stacks on the
top side, and on the bottom to the bus-specific drivers.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 10:00:18 -08:00
Inaky Perez-Gonzalez
b0c83ae1de wimax: Makefile, Kconfig and docbook linkage for the stack
This patch provides Makefile and KConfig for the WiMAX stack,
integrating them into the networking stack's Makefile, Kconfig and
doc-book templates.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 10:00:17 -08:00
Inaky Perez-Gonzalez
0d695913b0 wimax: documentation for the stack
wimax documentation

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 10:00:16 -08:00
Alan Stern
c838ea4626 USB: storage: make the "quirks=" module parameter writable
This patch (as1190) makes usb-storage's "quirks=" module parameter
writable, so that users can add entries for their devices at runtime
with no need to reboot or reload usb-storage.

New codes are added for the SANE_SENSE, CAPACITY_HEURISTICS, and
CAPACITY_OK flags.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 10:00:12 -08:00
Alan Stern
9ac39f28b5 USB: add asynchronous autosuspend/autoresume support
This patch (as1160b) adds support routines for asynchronous autosuspend
and autoresume, with accompanying documentation updates.  There
already are several potential users of this interface, and others are
likely to arise as autosuspend support becomes more widespread.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 09:59:53 -08:00
Alan Stern
d4f373e57d USB: usb-storage: add "quirks=" module parameter
This patch (as1163b) adds a "quirks=" module parameter to usb-storage.
This will allow people to make short-term changes to their
unusual_devs list without rebuilding the entire driver.  Testing will
become much easier, and less-sophisticated users will be able to
access their buggy devices after a simple config-file change instead
of having to wait for a new kernel release.

The patch also adds a documentation entry for usb-storage's
"delay_use" parameter, which has been around for years but but was
never listed among the kernel parameters.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07 09:59:53 -08:00
Jean Delvare
77fa49d94a hwmon: Fix various typos
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: David Hubbard <david.c.hubbard@gmail.com>
2009-01-07 16:37:35 +01:00
Manuel Lauss
c8ac32e471 hwmon: (lm70) Add TI TMP121 support
The Texas Instruments TMP121 is a SPI temperature sensor very similar
to the LM70, with slightly higher resolution.  This patch extends the
LM70 driver to support the TMP121.  The TMP123 differs in pin assign-
ment.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07 16:37:34 +01:00
Kaiwan N Billimoria
2b7300513b hwmon: (lm70) Code streamlining and cleanup
This fixes a byteswap bug in the LM70 temperature sensor driver,
which was previously covered up by a converse bug in the driver
for the LM70EVAL-LLP board (which is also fixed).

Other fixes:  doc updates, remove an annoying msleep(), and improve
three-wire protocol handling.

Signed-off-by: Kaiwan N Billimoria <kaiwan@designergraphix.com>
[ dbrownell@users.sourceforge.net: doc and whitespace tweaks ]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07 16:37:34 +01:00
Hans de Goede
0589c2de64 hwmon: Deprecate the fscher and fscpos drivers
Now that the new merged fschmd driver has gained support for the watchdog
integrated into these IC's, there is no more reason to keep the old fscher
and fscpos drivers around, so mark them as deprecated.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07 16:37:33 +01:00
Jean-Marc Spaggiari
b4da93e4b0 hwmon: (it87) Add support for the ITE IT8720F
Allow it87.c to handle IT8720 chipset like IT8718 in order to
retrieve voltage, temperatures and fans speed from sensors
tools. Also updating the related documentation.

Signed-off-by: Jean-Marc Spaggiari <jean-marc@spaggiari.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07 16:37:32 +01:00
Ira Snyder
6e34b187bc hwmon: Add LTC4245 driver
Add Linux support for the Linear Technology LTC4245 Multiple Supply Hot
Swap controller I2C monitoring interface.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07 16:37:32 +01:00