If DEBUG is turned on in prom.c, export the flat device tree via debugfs.
This has been handy on several occasions.

To look at it:
 # mount -t debugfs none /sys/kernel/debug
 # od -a /sys/kernel/debug/powerpc/flat-device-tree
 and/or
 # dtc -fI dtb /sys/kernel/debug/powerpc/flat-device-tree -O dts
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

None of this seems to be necessary, so let's see if can remove it and not
break anything. Booted on iSeries & pSeries here.

NB. we don't remove the hvReleaseData, we just move it down so that the file
reads more clearly.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

During kdump boot, noticed some machines checkstop on dma protection
fault for ongoing DMA left in the first kernel. Instead of initializing
TCE entries in iommu_init() for the kdump boot, this patch fixes this
issue by walking through the each TCE table and checks whether the
entries are in use by the first kernel. If so, reserve those entries by
setting the corresponding bit in tbl->it_map such that these entries
will not be available for the kdump boot.

However it could be possible that all TCE entries might be used up due
to the driver bug that does continuous mapping. My observation is around
1700 TCE  entries are used on some systems (Ex: P4) at some point of
time during kdump boot and saving dump (either write into the disk or
sending to remote machine). Hence, this patch will make sure that
minimum of 2048 entries will be available such that kdump boot could be
successful in some cases.
Signed-off-by: NHaren Myneni <haren@us.ibm.com>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NJon Loeliger <jdl@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NJon Loeliger <jdl@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NJon Loeliger <jdl@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NJon Loeliger <jdl@freescale.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The following patch avoids accessing Hypervisor privilege HID
registers when running on a Hypervisor (MSR[HV]=0).
Signed-off-by: NJimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This patch removes the old pmac ide led blink code and
adds generic LED subsystem support for the LED.

It maintains backward compatibility with the old
BLK_DEV_IDE_PMAC_BLINK Kconfig option which now
simply selects the new code and influences the
default trigger.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Builds on ARM report link problems with common configurations like
statically linked NFS (for nfsroot).  The symptom is that __init
section code references __exit section code; that won't work since
the exit sections are discarded (since they can never be called).

The best fix for these particular cases would be an "__init_or_exit"
section annotation.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NTrond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

It should be done before calling class_device_unregister() because
it will destroy the device and free memory if there are no other
references to the device.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This reverts commit e5c44fd8.

Thanks to Daniel Ritz and Michal Piotrowski for noticing the problem.

Daniel says:

  "[The] reason is a recent change that made modules always shows as
   module.mod.  it breaks modprobe and probably many scripts..besides
   lsmod looking horrible

   stuff like this in modprobe.conf:
        install pcmcia_core /sbin/modprobe --ignore-install pcmcia_core; /sbin/modprobe pcmcia
   makes modprobe fork/exec endlessly calling itself...until oom
   interrupts it"
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (56 commits)
  [PATCH] fs/ocfs2/dlm/: cleanups
  ocfs2: fix compiler warnings in dlm_convert_lock_handler()
  ocfs2: dlm_print_one_mle() needs to be defined
  ocfs2: remove whitespace in dlmunlock.c
  ocfs2: move dlm work to a private work queue
  ocfs2: fix incorrect error returns
  ocfs2: tune down some noisy messages during dlm recovery
  ocfs2: display message before waiting for recovery to complete
  ocfs2: mlog in dlm_convert_lock_handler() should be ML_ERROR
  ocfs2: retry operations when a lock is marked in recovery
  ocfs2: use cond_resched() in dlm_thread()
  ocfs2: use GFP_NOFS in some dlm operations
  ocfs2: wait for recovery when starting lock mastery
  ocfs2: continue recovery when a dead node is encountered
  ocfs2: remove unneccesary spin_unlock() in dlm_remaster_locks()
  ocfs2: dlm_remaster_locks() should never exit without completing
  ocfs2: special case recovery lock in dlmlock_remote()
  ocfs2: pending mastery asserts and migrations should block each other
  ocfs2: temporarily disable automatic lock migration
  ocfs2: do not unconditionally purge the lockres in dlmlock_remote()
  ...

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 3657/1: S3C24XX: Documentation update of Overview.txt
  [ARM] Update mach-types
  [ARM] 3656/1: S3C2412: Add S3C2412 and S3C2413 documenation
  [ARM] 3654/1: add ajeco 1arm sbc support
  [ARM] fix drivers/mfd/ucb1x00-core.c IRQ probing bug
  [ARM] 3651/1: S3C24XX: Make arch list more detailed
  [ARM] 3650/1: S3C2412: Update s3c2410_defconfig
  [ARM] 3649/1: S3C24XX: Fix capitalisation of CPU on SMDK2440
  [ARM] 3612/1: make pci bus optional for ixp4xx platform
  [ARM] Remove MODE_(SVC|IRQ|FIQ|USR) and DEFAULT_FIQ
  [ARM] Remove save_lr/restore_pc macros
  [ARM] Remove partial non-v6 binutils compatibility
  [ARM] Remove LOADREGS macro
  [ARM] Remove RETINSTR macro

* master.kernel.org:/home/rmk/linux-2.6-serial:
  [SERIAL] 8250_pnp: add support for other Wacom tablets

Patch from Ben Dooks

Update the list of supported devices, and remove the
changelog. Add SMDK2413 information.--
Signed-off-by: NBen Dooks &lt;ben-linux@fluff.org&gt;Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Usual mach-types update.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This patch #if 0's the no longer used dlm_dump_lock_resources().

Since this makes dlmdebug.h empty, this patch also removes this header.

Additionally, the needlessly global dlm_is_node_recovered() is made
static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

We need to cast to unsigned long long.
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Fixes compile breakage.
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

The work that is done can block for long periods of time and so is not
appropriate for keventd.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Use DLM_REJECTED instead of DLM_RECOVERING.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Before checking for a nonexistent lock, make sure the lockres is not marked
RECOVERING. The caller will just retry and the state should be fixed up when
recovery completes.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

yield() does not yield.  cond_resched() does.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

We cannot restart recovery. Once we begin to recover a node, keep the state
of the recovery intact and follow through, regardless of any other node
deaths that may occur.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

If the previous master of the recovery lock dies, let calc_usage take it
down completely and let the caller completely redo the dlmlock() call.
Otherwise, there will never be an opportunity to re-master the lockres and
recovery wont be able to progress.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Use the existing structure for blocking migrations when ASTs are pending to
achieve the same result. If we can catch the assert before it goes on the
wire, just cancel it and let the migration continue.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Now we never change the owner of a lock resource until unmount or node
death. This will be re-enabled once some issues in the algorithm used have
been resolved.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

In dlmlock_remote(), do not call purge_lockres until the lock resource
actually changes. otherwise, the mastery info on the lockres will go away
underneath the caller.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

When mastering non-recovery lock resources, additional time was frequently
needed to allow the disk heartbeat to catch up with the network timeout. the
recovery lock resource is time critical and avoids this path.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Recovery will spin in dlm_pre_master_reco_lockres if we do not ignore
timed-out network responses from dead nodes.
Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>

Signed-off-by: NKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>