Merge tag 'v2.6.33' for its firewire changes since last branch point

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Merge branch 'x86/irq' into x86/apic

Merge reason:
Conflicts in arch/x86/kernel/apic/io_apic.c

Resolved Conflicts:
arch/x86/kernel/apic/io_apic.c

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

Merge branch 'master' into for-2.6.34

Merge branch 'fix/misc' into topic/misc

Conflicts:
sound/pci/hda/patch_realtek.c

Merge branch 'for-rmk' of git://git.marvell.com/orion into devel-stable

Conflicts:
arch/arm/Makefile

Merge remote branch 'linus/master' into x86/bootmem

Merge branch 'master' of /repos/git/net-next-2.6

Signed-off-by: Patrick McHardy <kaber@trash.net>

Merge branch 'master' into percpu

Merge branch 'for-2.6.33' into for-2.6.34

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Merge commit 'v2.6.33-rc5' into next

Merge branch 'master' into next

Merge branch 'master' into percpu

Conflicts:
arch/powerpc/platforms/pseries/hvCall.S
include/linux/percpu.h

Merge branch 'linux-2.6.33'

Merge commit 'v2.6.33' into tracing/core

Conflicts:
scripts/recordmcount.pl

Merge reason: Merge up to v2.6.33.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge commit 'origin/master' into next

Manual merge of:
drivers/char/hvc_console.c
drivers/char/hvc_console.h

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: (44 commits)
Add MAINTAINERS entry for virt

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: (44 commits)
Add MAINTAINERS entry for virtio_console
virtio: console: Fill ports' entire in_vq with buffers
virtio: console: Error out if we can't allocate buffers for control queue
virtio: console: Add ability to remove module
virtio: console: Ensure no memleaks in case of unused buffers
virtio: console: show error message if hvc_alloc fails for console ports
virtio: console: Add debugfs files for each port to expose debug info
virtio: console: Add ability to hot-unplug ports
virtio: console: Handle port hot-plug
virtio: console: Remove cached data on port close
virtio: console: Register with sysfs and create a 'name' attribute for ports
virtio: console: Ensure only one process can have a port open at a time
virtio: console: Add file operations to ports for open/read/write/poll
virtio: console: Associate each port with a char device
virtio: console: Prepare for writing to userspace buffers
virtio: console: Add a new MULTIPORT feature, support for generic ports
virtio: console: Introduce a send_buf function for a common path for sending data to host
virtio: console: Introduce function to hand off data from host to readers
virtio: console: Separate out find_vqs operation into a different function
virtio: console: Separate out console init into a new function
...

show more ...

Merge commit 'v2.6.33' into core/rcu

Merge reason: Update from -rc4 to -final.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

virtio: fix balloon without VIRTIO_BALLOON_F_STATS_VQ

When running under qemu-kvm-0.11.0:

BUG: unable to handle kernel paging request at 56e58955
...
Process vballoon (pid: 1297, ti=c7976000 tas

virtio: fix balloon without VIRTIO_BALLOON_F_STATS_VQ

When running under qemu-kvm-0.11.0:

BUG: unable to handle kernel paging request at 56e58955
...
Process vballoon (pid: 1297, ti=c7976000 task=c70a6ca0 task.ti=c7
...
Call Trace:
[<c88253a3>] ? balloon+0x1b3/0x440 [virtio_balloon]
[<c041c2d7>] ? schedule+0x327/0x9d0
[<c88251f0>] ? balloon+0x0/0x440 [virtio_balloon]
[<c014a2d4>] ? kthread+0x74/0x80
[<c014a260>] ? kthread+0x0/0x80
[<c0103b36>] ? kernel_thread_helper+0x6/0x30

need_stats_update should be zero-initialized.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Adam Litke <agl@us.ibm.com>

show more ...

virtio: Fix scheduling while atomic in virtio_balloon stats

This is a fix for my earlier patch: "virtio: Add memory statistics reporting to
the balloon driver (V4)".

I discovered that all_vm_events

virtio: Fix scheduling while atomic in virtio_balloon stats

This is a fix for my earlier patch: "virtio: Add memory statistics reporting to
the balloon driver (V4)".

I discovered that all_vm_events() can sleep and therefore stats collection
cannot be done in interrupt context. One solution is to handle the interrupt
by noting that stats need to be collected and waking the existing vballoon
kthread which will complete the work via stats_handle_request(). Rusty, is
this a saner way of doing business?

There is one issue that I would like a broader opinion on. In stats_request, I
update vb->need_stats_update and then wake up the kthread. The kthread uses
vb->need_stats_update as a condition variable. Do I need a memory barrier
between the update and wake_up to ensure that my kthread sees the correct
value? My testing suggests that it is not needed but I would like some
confirmation from the experts.

Signed-off-by: Adam Litke <agl@us.ibm.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Anthony Liguori <aliguori@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

show more ...

virtio: Add memory statistics reporting to the balloon driver (V4)

Changes since V3:
- Do not do endian conversions as they will be done in the host
- Report stats that reference a quantity of mem

virtio: Add memory statistics reporting to the balloon driver (V4)

Changes since V3:
- Do not do endian conversions as they will be done in the host
- Report stats that reference a quantity of memory in bytes
- Minor coding style updates

Changes since V2:
- Increase stat field size to 64 bits
- Report all sizes in kb (not pages)
- Drop anon_pages stat and fix endianness conversion

Changes since V1:
- Use a virtqueue instead of the device config space

When using ballooning to manage overcommitted memory on a host, a system for
guests to communicate their memory usage to the host can provide information
that will minimize the impact of ballooning on the guests. The current method
employs a daemon running in each guest that communicates memory statistics to a
host daemon at a specified time interval. The host daemon aggregates this
information and inflates and/or deflates balloons according to the level of
host memory pressure. This approach is effective but overly complex since a
daemon must be installed inside each guest and coordinated to communicate with
the host. A simpler approach is to collect memory statistics in the virtio
balloon driver and communicate them directly to the hypervisor.

This patch enables the guest-side support by adding stats collection and
reporting to the virtio balloon driver.

Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: Anthony Liguori <anthony@codemonkey.ws>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (minor fixes)

show more ...

Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

Merge branch 'linus' into x86/mm

x86/mm is on 32-rc4 and missing the spinlock namespace changes which
are needed for further commits into this topic.

Signed-off-by: Thomas Gleixner <tglx@linutronix

Merge branch 'linus' into x86/mm

x86/mm is on 32-rc4 and missing the spinlock namespace changes which
are needed for further commits into this topic.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

show more ...

Merge branch 'sched/urgent' into sched/core

Merge reason: Merge dependent fix, update to latest -rc.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge branch 'master' into upstream

Conflicts:
drivers/hid/hid-ids.h