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Commit Graph

23006 Commits

Author SHA1 Message Date
David Woodhouse
39028ec69b V4L/DVB (7166): [v4l] Add new user class controls and deprecate others
These were removed in commit 26d507fcfe:

> -#define V4L2_CID_HCENTER               (V4L2_CID_BASE+22)
> -#define V4L2_CID_VCENTER               (V4L2_CID_BASE+23)
> -#define V4L2_CID_LASTP1                        (V4L2_CID_BASE+24) /*
> last CID + 1 */
> +
> +/* Deprecated, use V4L2_CID_PAN_RESET and V4L2_CID_TILT_RESET */
> +#define V4L2_CID_HCENTER_DEPRECATED    (V4L2_CID_BASE+22)
> +#define V4L2_CID_VCENTER_DEPRECATED    (V4L2_CID_BASE+23)

But there was no warning in Documentation/feature-removal-schedule.txt
and I'm receiving reports that it's breaking userspace apps (the
gstreamer-v4l2 plugin breaks in Fedora rawhide). You can't just pull
things from the published userspace API like that.

Please can we revert the addition of _DEPRECATED to these ioctl
definitions. Perhaps we can add a runtime warning if they actually get
used? Or a compile-time warning if we can manage that?

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-05 06:35:47 -03:00
Guennadi Liakhovetski
70345fbe4a V4L/DVB (7911): Remove v4l2_video_std_fps prototype declaration
The v4l2_video_std_fps function has been removed by Adrian Bunk in 2004
but then its prototype re-appeared in include/media/v4l2-dev.h. Remove it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-05 06:35:42 -03:00
Linus Torvalds
3e387fcdc4 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: (56 commits)
  l2tp: Fix possible oops if transmitting or receiving when tunnel goes down
  tcp: Fix for race due to temporary drop of the socket lock in skb_splice_bits.
  tcp: Increment OUTRSTS in tcp_send_active_reset()
  raw: Raw socket leak.
  lt2p: Fix possible WARN_ON from socket code when UDP socket is closed
  USB ID for Philips CPWUA054/00 Wireless USB Adapter 11g
  ssb: Fix context assertion in ssb_pcicore_dev_irqvecs_enable
  libertas: fix command size for CMD_802_11_SUBSCRIBE_EVENT
  ipw2200: expire and use oldest BSS on adhoc create
  airo warning fix
  b43legacy: Fix controller restart crash
  sctp: Fix ECN markings for IPv6
  sctp: Flush the queue only once during fast retransmit.
  sctp: Start T3-RTX timer when fast retransmitting lowest TSN
  sctp: Correctly implement Fast Recovery cwnd manipulations.
  sctp: Move sctp_v4_dst_saddr out of loop
  sctp: retran_path update bug fix
  tcp: fix skb vs fack_count out-of-sync condition
  sunhme: Cleanup use of deprecated calls to save_and_cli and restore_flags.
  xfrm: xfrm_algo: correct usage of RIPEMD-160
  ...
2008-06-04 17:39:33 -07:00
Linus Torvalds
9489a06258 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: switch /proc/led to seq_file
  sparc64: IO accessors fix
2008-06-04 17:38:44 -07:00
Vlad Yasevich
b9031d9d87 sctp: Fix ECN markings for IPv6
Commit e9df2e8fd8 ("[IPV6]: Use
appropriate sock tclass setting for routing lookup.") also changed the
way that ECN capable transports mark this capability in IPv6.  As a
result, SCTP was not marking ECN capablity because the traffic class
was never set.  This patch brings back the markings for IPv6 traffic.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:40:15 -07:00
Vlad Yasevich
62aeaff5cc sctp: Start T3-RTX timer when fast retransmitting lowest TSN
When we are trying to fast retransmit the lowest outstanding TSN, we
need to restart the T3-RTX timer, so that subsequent timeouts will
correctly tag all the packets necessary for retransmissions.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Tested-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:39:11 -07:00
Vlad Yasevich
a646523481 sctp: Correctly implement Fast Recovery cwnd manipulations.
Correctly keep track of Fast Recovery state and do not reduce
congestion window multiple times during sucht state.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Tested-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 12:38:43 -07:00
David S. Miller
aed5a833fb Merge branch 'net-2.6-misc-20080605a' of git://git.linux-ipv6.org/gitroot/yoshfuji/linux-2.6-fix 2008-06-04 12:10:21 -07:00
Denis V. Lunev
36d926b94a [IPV6]: inet_sk(sk)->cork.opt leak
IPv6 UDP sockets wth IPv4 mapped address use udp_sendmsg to send the data
actually. In this case ip_flush_pending_frames should be called instead
of ip6_flush_pending_frames.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05 04:02:38 +09:00
YOSHIFUJI Hideaki
91e1908f56 [IPV6] NETNS: Handle ancillary data in appropriate namespace.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05 04:02:36 +09:00
YOSHIFUJI Hideaki
4bed72e4f5 [IPV6] ADDRCONF: Allow longer lifetime on 64bit archs.
- Allow longer lifetimes (>= 0x7fffffff/HZ) on 64bit archs
  by using unsigned long.
- Shadow this arithmetic overflow workaround by introducing
  helper functions: addrconf_timeout_fixup() and
  addrconf_finite_timeout().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05 04:02:34 +09:00
YOSHIFUJI Hideaki
e51171019b [SCTP]: Fix NULL dereference of asoc.
Commit 7cbca67c07 ("[IPV6]: Support
Source Address Selection API (RFC5014)") introduced NULL dereference
of asoc to sctp_v6_get_saddr in net/sctp/ipv6.c.
Pointed out by Johann Felix Soden <johfel@users.sourceforge.net>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-06-05 04:02:30 +09:00
Linus Torvalds
d389c7d898 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 - COMPAL IFL90/JFL-92 laptop quirk
  [ALSA] hda - Fix resume of auto-config mode with Realtek codecs
  [ALSA] hda - Fix model for LG LS75 laptop
  [ALSA] hda - Fix mic input on HP2133
  [ALSA] ac97 - Fix ASUS A9T laptop output
2008-06-04 09:43:58 -07:00
Linus Torvalds
4ded383569 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
  x86, fpu: fix CONFIG_PREEMPT=y corruption of application's FPU stack
  suspend-vs-iommu: prevent suspend if we could not resume
  x86: section mismatch fix
  x86: fix Xorg crash with xf86MapVidMem error
  x86: fix pointer type warning in arch/x86/mm/init_64.c:early_memtest
  x86: fix bad pmd ffff810000207xxx(9090909090909090)
  x86: ioremap fix failing nesting check
  x86: fix broken math-emu with lazy allocation of fpu area
  x86: enable preemption in delay
  x86: disable preemption in native_smp_prepare_cpus
  x86: fix APIC warning on 32bit v2
2008-06-04 09:15:51 -07:00
Linus Torvalds
246dd412d3 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata-sff: Fix oops reported in kerneloops.org for pnp devices with no ctl
  libata: kill unused constants
  sata_mv: PHY_MODE4 cleanups
  [libata] ata_piix: more acer short cable quirks
  [libata] ACPI: Properly handle bay devices in dock stations
2008-06-04 08:36:56 -07:00
Linus Torvalds
df6ab559bb Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.26
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.26:
  sh: Add defconfig for RSK7203.
  sh: Update SE7206 defconfig.
  sh: Disable 4KSTACKS on nommu.
  sh: fix miscompilation of ip_fast_csum with gcc >= 4.3
  sh: module.c use kernel unaligned helpers
  sh/kernel/cpu/irq/intc-sh5.c build fix
2008-06-04 08:35:44 -07:00
Suresh Siddha
e8a496ac8c x86: fix broken math-emu with lazy allocation of fpu area
Fix the math emulation that got broken with the recent lazy allocation of FPU
area. init_fpu() need to be added for the math-emulation path aswell
for the FPU area allocation.

math emulation enabled kernel booted fine with this, in the presence
of "no387 nofxsr" boot param.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: hpa@zytor.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-06-04 13:11:46 +02:00
Alan Cox
a57c1bade5 libata-sff: Fix oops reported in kerneloops.org for pnp devices with no ctl
- Make ata_sff_altstatus private so nobody uses it by mistake
- Drop the 400nS delay from it

Add

ata_sff_irq_status	-	encapsulates the IRQ check logic

This function keeps the existing behaviour for altstatus using devices. I
actually suspect the logic was wrong before the changes but -rc isn't the
time to play with that

ata_sff_sync		-	ensure writes hit the device

Really we want an io* operation for 'is posted' eg ioisposted(ioaddr) so
that we can fix the nasty delay this causes on most systems.

- ata_sff_pause		-	400nS delay

Ensure the command hit the device and delay 400nS

- ata_sff_dma_pause

Ensure the I/O hit the device and enforce an HDMA1:0 transition delay.
Requires altstatus register exists, BUG if not so we don't risk
corruption in MWDMA modes. (UDMA the checksum will save your backside in
theory)

The only other complication then is devices with their own handlers.
rb532 can use dma_pause but scc needs to access its own altstatus
register for internal errata workarounds so directly call the drivers own
altstatus function.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-04 06:40:41 -04:00
Tejun Heo
4f0ebe3cc5 libata: kill unused constants
Kill a few unused constants.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-04 06:29:14 -04:00
Thomas Graf
ab32cd793d route: Remove unused ifa_anycast field
The field was supposed to allow the creation of an anycast route by
assigning an anycast address to an address prefix. It was never
implemented so this field is unused and serves no purpose. Remove it.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-03 16:37:33 -07:00
Thomas Graf
bc3ed28caa netlink: Improve returned error codes
Make nlmsg_trim(), nlmsg_cancel(), genlmsg_cancel(), and
nla_nest_cancel() void functions.

Return -EMSGSIZE instead of -1 if the provided message buffer is not
big enough.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-03 16:36:54 -07:00
Thomas Graf
1f9d11c7c9 route: Mark unused routing attributes as such
Also removes an unused policy entry for an attribute which is
only used in kernel->user direction.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-03 16:36:27 -07:00
Thomas Graf
51b77cae0d route: Mark unused route cache flags as such.
Also removes an obsolete check for the unused flag RTCF_MASQ.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-03 16:36:01 -07:00
Alan Cox
64e9159f5d serial_core: uart_set_ldisc infrastructure
The tty layer provides a callback that is used when the line discipline
is changed. Some hardware uses this to configure hardware specific
features such as IrDA mode on serial ports. Unfortunately the serial
layer does not provide this feature or pass it down to drivers.

Blackfin used to hack around this by rewriting the tty ops, but those are
now properly shared and const so the hack fails. Instead provide the
proper operations.

This change plus a follow up from the Blackfin guys is needed to avoid
blackfin losing features in this release.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-03 08:20:17 -07:00
Anton Vorontsov
63e14626ed mmc_spi: mmc_spi.h should include linux/interrupts.h
Since mmc_spi.h uses irqreturn_t type, it should include appropriate
header, otherwise build will break if users didn't include it (some of
them do not use interrupts).

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-02 15:27:10 -07:00
Linus Torvalds
00e98a9992 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:
  8250 Serial Driver: revert extra IRQ flag definition patch
  Blackfin arch: update anomaly headers from toolchain trunk
  Blackfin arch: Remove bad and usless code
  Blackfin arch: Fix bug - set corret SSEL and IRQ to enable AD7877 on BF527
  Blackfin arch: Fix typo. it should be _outsw_8
  Blackfin arch: Cleanup no functional changes
2008-06-02 15:25:27 -07:00
Linus Torvalds
f365ad5fc0 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fix DMA nodes in the MPC8610 HPCD device tree
  [POWERPC] Export empty_zero_page and copy_page in arch/ppc
  [POWERPC] Add "memory" clobber to MMIO accessors
  [POWERPC] pasemi: update pasemi_defconfig, enable electra_cf
  electra_cf: Add MODULE_DEVICE_TABLE()
2008-06-02 15:25:03 -07:00
Paul Mundt
d02d6be5d5 sh: fix miscompilation of ip_fast_csum with gcc >= 4.3
As noted by Matthew Wilcox:

    Kyle McMartin just tracked down a bug on parisc to a missing
    "memory" clobber in the inline assembly implementation of
    ip_fast_csum.  The FRV, SH and Xtensa ports are also missing a
    memory clobber, so I thought it would be polite to let you know.

    The bug manifests as dropped network packets (obviously they have
    the wrong checksum).  It started appearing for parisc with GCC 4.3.

    The GCC manual says:

     If your assembler instructions access memory in an unpredictable
     fashion, add `memory' to the list of clobbered registers.  This
     will cause GCC to not keep memory values cached in registers
     across the assembler instruction and not optimize stores or loads
     to that memory.

    I see that FRV has a 400 byte memory output which may prevent this
    problem from appearing, but SH and Xtensa have nothing to prevent
    this bug.  Hope this saves you a few days of debugging.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-06-02 12:40:14 +09:00
Mike Frysinger
a70ce072b3 Blackfin arch: update anomaly headers from toolchain trunk
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-31 15:47:17 +08:00
Michael Hennerich
b06dcee9c8 Blackfin arch: Remove bad and usless code
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-05-31 15:35:40 +08:00
Benjamin Herrenschmidt
cfab3bdf82 [POWERPC] Add "memory" clobber to MMIO accessors
Gcc might re-order MMIO accessors vs. surrounding consistent
memory accesses, which is a "bad thing", and could break drivers.
This fixes it by adding a "memory" clobber to the MMIO accessors,
which should prevent gcc from doing that reordering.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-31 17:08:28 +10:00
Linus Torvalds
ab8cd81830 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: notify on empty
  virtio: force callback on empty.
  virtio_blk: fix endianess annotations
  virtio_config: fix len calculation of config elements
  virtio_net: another race with virtio_net and enable_cb
  virtio: An entropy device, as suggested by hpa.
  virtio_blk: allow read-only disks
  lguest: fix ugly <NULL> in /proc/interrupts
  virtio: set device index in common code.
  virtio: virtio_pci should not set bus_id.
  virtio: bus_id for devices should contain 'virtio'
  Fix crash in virtio_blk during modprobe ; rmmod ; modprobe
  lguest: use ioremap_cache, not ioremap
2008-05-30 10:20:03 -07:00
Linus Torvalds
7536d7be7b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: rename SW_RADIO to SW_RFKILL_ALL
  Input: gtco - fix double kfree in error handling path
  Input: pxa27x_keypad - miscellaneous fixes
  Input: atkbd - mark keyboard as disabled when suspending/unloading
  Input: apanel - remove duplicate include
  Input: wm9713 - support five wire panels
  Input: wm97xx-core - fix race on PHY init
  Input: wm97xx-core - fix driver name
  Input: wm97xx-core - report a phys for WM97xx touchscreens
  Input: i8042 - make sure Dritek quirk is invoked at resume
  Input: i8042 - add Dritek quirk for Acer TravelMate 660
2008-05-30 10:17:19 -07:00
Henrique de Moraes Holschuh
5adad01339 Input: rename SW_RADIO to SW_RFKILL_ALL
The SW_RADIO code for EV_SW events has a name that is not descriptive
enough of its intended function, and could induce someone to think
KEY_RADIO is its EV_KEY counterpart, which is false.

Rename it to SW_RFKILL_ALL, and document what this event is for.  Keep
the old name around, to avoid userspace ABI breaks.

The SW_RFKILL_ALL event is meant to be used by rfkill master switches.  It
is not bound to a particular radio switch type, and usually applies to all
types.  It is semantically tied to master rfkill switches that enable or
disable every radio in a system.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-05-30 10:40:46 -04:00
Takashi Iwai
e48d6d97bb [ALSA] ac97 - Fix ASUS A9T laptop output
ASUS A9T laptop uses line-out pin as the real front-output while
other devices use it as the surround.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-05-30 16:20:42 +02:00
Benjamin Herrenschmidt
fbaa20f66a sparc64: IO accessors fix
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

I added a full memory clobber on all asm accessors except the _raw
ones.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-30 02:01:28 -07:00
Christian Borntraeger
bebd9a455b [S390] s390 types: make dma_addr_t 64 bit capable
virtio tests with guests larger than 4 GB revealed that the dma_addr_t
definition for s390 did not make it into the 64bit world.
This patch changes the definition on s390 to have an u64 on 64bit and
u32 on 32bit systems.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-05-30 10:03:33 +02:00
Rusty Russell
b4f68be6c5 virtio: force callback on empty.
virtio allows drivers to suppress callbacks (ie. interrupts) for
efficiency (no locking, it's just an optimization).

There's a similar mechanism for the host to suppress notifications
coming from the guest: in that case, we ignore the suppression if the
ring is completely full.

It turns out that life is simpler if the host similarly ignores
callback suppression when the ring is completely empty: the network
driver wants to free up old packets in a timely manner, and otherwise
has to use a timer to poll.

We have to remove the code which ignores interrupts when the driver
has disabled them (again, it had no locking and hence was unreliable
anyway).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-30 15:09:46 +10:00
Christian Borntraeger
7757f09c70 virtio_blk: fix endianess annotations
Since commit 72e61eb40b (virtio: change config
to guest endian) config space is no longer fixed endian.

Lets change the virtio_blk_config variables.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-30 15:09:45 +10:00
Christian Borntraeger
7f31fe0500 virtio_config: fix len calculation of config elements
Rusty,

This patch is a prereq for the virtio_blk blocksize patch, please apply it
first.

Adding an u32 value to the virtio_blk_config unconvered a small bug the config
space defintions:
v is a pointer, to we have to use sizeof(*v) instead of sizeof(v).

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-30 15:09:45 +10:00
Rusty Russell
f7f510ec19 virtio: An entropy device, as suggested by hpa.
Note that by itself, having a "hardware" random generator does very
little: you should probably run "rngd" in your guest to feed this into
the kernel entropy pool.

Included:
	virtio_rng: dont use vmalloced addresses for virtio

	If virtio_rng is build as a module, random_data is an address
	in vmalloc space. As virtio expects guest real addresses, this
	can cause any kind of funny behaviour, so lets allocate
	random_data dynamically with kmalloc.

	Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-30 15:09:44 +10:00
Christian Borntraeger
3ef5360954 virtio_blk: allow read-only disks
Hello Rusty,

sometimes it is useful to share a disk (e.g. usr). To avoid file system
corruption, the disk should be mounted read-only in that case. This patch
adds a new feature flag, that allows the host to specify, if the disk should
be considered read-only.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-05-30 15:09:44 +10:00
Linus Torvalds
916941b2bf Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
  driver-core: prepare for 2.6.27 api change by adding dev_set_name
2008-05-29 21:29:39 -07:00
Stephen Rothwell
413c239fad driver-core: prepare for 2.6.27 api change by adding dev_set_name
Create the dev_set_name function now so that various subsystems can
start changing over to it before other changes in 2.6.27 will make it
compulsory.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-05-29 21:10:01 -07:00
Linus Torvalds
a7f75d3bed Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: re-tune NUMA topologies
  sched: stop wake_affine from causing serious imbalance
  sched: fix sched_clock_cpu()
  revert ("sched: fair-group: SMP-nice for group scheduling")
  sched: cleanup
  show_schedstat(): fix memleak
  sched: unite unlikely pairs in rt_policy() and schedule_debug()
  revert ("sched: fair: weight calculations")
2008-05-29 09:26:17 -07:00
Ingo Molnar
6715930654 Merge commit 'linus/master' into sched-fixes-for-linus 2008-05-29 16:05:05 +02:00
Ingo Molnar
ea3f01f8af sched: re-tune NUMA topologies
improve the sysbench ramp-up phase and its peak throughput on
a 16way NUMA box, by turning on WAKE_AFFINE:

             tip/sched   tip/sched+wake-affine
-------------------------------------------------
    1:             700              830    +15.65%
    2:            1465             1391    -5.28%
    4:            3017             3105    +2.81%
    8:            5100             6021    +15.30%
   16:           10725            10745    +0.19%
   32:           10135            10150    +0.16%
   64:            9338             9240    -1.06%
  128:            8599             8252    -4.21%
  256:            8475             8144    -4.07%
-------------------------------------------------
  SUM:           57558            57882    +0.56%

this change also improves lat_ctx from 6.69 usecs to 1.11 usec:

  $ ./lat_ctx -s 0 2
  "size=0k ovr=1.19
  2 1.11

  $ ./lat_ctx -s 0 2
  "size=0k ovr=1.22
  2 6.69

in sysbench it's an overall win with some weakness at the lots-of-clients
side. That happens because we now under-balance this workload
a bit. To counter that effect, turn on NEWIDLE:

              wake-idle          wake-idle+newidle
 -------------------------------------------------
     1:             830              834    +0.43%
     2:            1391             1401    +0.65%
     4:            3105             3091    -0.43%
     8:            6021             6046    +0.42%
    16:           10745            10736    -0.08%
    32:           10150            10206    +0.55%
    64:            9240             9533    +3.08%
   128:            8252             8355    +1.24%
   256:            8144             8384    +2.87%
 -------------------------------------------------
   SUM:           57882            58591    +1.21%

as a bonus this not only improves the many-clients case but
also improves the (more important) rampup phase.

sysbench is a workload that quickly breaks down if the
scheduler over-balances, so since it showed an improvement
under NEWIDLE this change is definitely good.
2008-05-29 14:46:30 +02:00
Ingo Molnar
6363ca57c7 revert ("sched: fair-group: SMP-nice for group scheduling")
Yanmin Zhang reported:

Comparing with 2.6.25, volanoMark has big regression with kernel 2.6.26-rc1.
It's about 50% on my 8-core stoakley, 16-core tigerton, and Itanium Montecito.

With bisect, I located the following patch:

| 18d95a2832 is first bad commit
| commit 18d95a2832
| Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
| Date:   Sat Apr 19 19:45:00 2008 +0200
|
|     sched: fair-group: SMP-nice for group scheduling

Revert it so that we get v2.6.25 behavior.

Bisected-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-05-29 11:28:57 +02:00
Linus Torvalds
3897b82c35 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] Workaround for RSE issue
2008-05-28 12:58:12 -07:00
David Howells
0a2ce2ffc3 Fix FRV minimum slab/kmalloc alignment
> +#define	ARCH_KMALLOC_MINALIGN		(sizeof(long) * 2)
> +#define	ARCH_SLAB_MINALIGN		(sizeof(long) * 2)

This doesn't work if SLAB is selected and slab debugging is enabled as
these are passed to the preprocessor, and the preprocessor doesn't
understand sizeof.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-28 09:05:28 -07:00