Rabin Vincent [Tue, 25 Jan 2011 10:18:24 +0000 (11:18 +0100)]
dma40: move lli_load to main source file
These register writes are better placed in the main source file rather than
ll.c.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:23 +0000 (11:18 +0100)]
dma40: combine mem and slave prep_sg functions
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:22 +0000 (11:18 +0100)]
dma40: remove export of stedma40_memcpy_sg
The dmaengine framework has the API for this now.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:21 +0000 (11:18 +0100)]
dma40: combine mem and slave sg-to-lli functions
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:20 +0000 (11:18 +0100)]
dma40: remove duplicated dev addr code
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:18 +0000 (11:18 +0100)]
dma40: combine desc init functions
The desc init code can be shared between the mem and slave prep routines.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:17 +0000 (11:18 +0100)]
dma40: implement prep_memcpy as a wrapper around memcpy_sg
To simplify the code.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:16 +0000 (11:18 +0100)]
dma40: remove unnecessary casts
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:15 +0000 (11:18 +0100)]
dma40: fix DMA API usage for LLIs
Map and unmap the LLIs and use dma_sync_single_for_device() appropriately
instead of mapping and never unmapping them.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:14 +0000 (11:18 +0100)]
dma40: fix DMA API usage for LCLA
Map the buffer once and use dma_sync*() appropriately instead of mapping the
buffer over and over without unmapping it.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:13 +0000 (11:18 +0100)]
dma40: use sg_dma_address() instead of sg_phys()
The address to use for DMA should be taken from sg_dma_address() and not
sg_phys().
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:12 +0000 (11:18 +0100)]
dma40: remove unnecessary ALIGN()s
ALIGN(x * y, y) == x * y
ALIGN(aligned + x * y, y) == aligned + x * y
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:11 +0000 (11:18 +0100)]
dma40: allow realtime and priority for event lines
DB8500v2's DMA40 (revision 3) allows setting event lines as high priority and
real time.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:10 +0000 (11:18 +0100)]
dma40: fix comment to refer to SOCs rather than boards
And add DB8500v2 information.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:09 +0000 (11:18 +0100)]
dma40: use helpers for error functions
Almost every use of dev_err in this driver prints the function name. Abstract
out wrappers to help with this and reduce code duplication.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:08 +0000 (11:18 +0100)]
dma40: use helpers for channel type check
The somewhat confusing check
d40c->log_num == D40_PHY_CHAN
and its variants are used in several places to check if a channel is logical or
physical. Use appropriately named helpers to do this to make the code more
readable.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:07 +0000 (11:18 +0100)]
dma40: use helper for channel registers base
The register offset computation for accessing channel registers is copy/pasted
in several places. Create a helper function to do it.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:06 +0000 (11:18 +0100)]
dma40: remove "hardware link with previous jobs" code
This link in hardware with previous jobs code is:
- unused, no clients using or requiring this feature
- incomplete, being implemented only for physical channels
- broken, only working to perform one link
Remove it. This also allows us to get rid of the channel pause in the
submit_tx() routine.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:05 +0000 (11:18 +0100)]
dma40: ensure event lines get enabled
The controller sometimes fails to register the enable of the event line when
both src and dst event lines are used on the same logical channel. Implement
the recommended software workaround, which is to retry the write until it
works.
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Rabin Vincent [Tue, 25 Jan 2011 10:18:04 +0000 (11:18 +0100)]
dma40: make init function static
Acked-by: Per Forlin <per.forlin@stericsson.com> Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Linus Torvalds [Sat, 22 Jan 2011 00:50:31 +0000 (16:50 -0800)]
Merge branch 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (101 commits)
[media] staging/lirc: fix mem leaks and ptr err usage
[media] hdpvr: reduce latency of i2c read/write w/recycled buffer
[media] hdpvr: enable IR part
[media] rc/mceusb: timeout should be in ns, not us
[media] v4l2-device: fix 'use-after-freed' oops
[media] v4l2-dev: don't memset video_device.dev
[media] zoran: use video_device_alloc instead of kmalloc
[media] w9966: zero device state after a detach
[media] v4l: Fix a use-before-set in the control framework
[media] v4l: Include linux/videodev2.h in media/v4l2-ctrls.h
[media] DocBook/v4l: update V4L2 revision and update copyright years
[media] DocBook/v4l: fix validation error in dev-rds.xml
[media] v4l2-ctrls: queryctrl shouldn't attempt to replace V4L2_CID_PRIVATE_BASE IDs
[media] v4l2-ctrls: fix missing 'read-only' check
[media] pvrusb2: Provide more information about IR units to lirc_zilog and ir-kbd-i2c
[media] ir-kbd-i2c: Add back defaults setting for Zilog Z8's at addr 0x71
[media] lirc_zilog: Update TODO.lirc_zilog
[media] lirc_zilog: Add Andy Walls to copyright notice and authors list
[media] lirc_zilog: Remove useless struct i2c_driver.command function
[media] lirc_zilog: Remove unneeded tests for existence of the IR Tx function
...
David Howells [Thu, 20 Jan 2011 16:38:27 +0000 (16:38 +0000)]
KEYS: Do some style cleanup in the key management code.
Do a bit of a style clean up in the key management code. No functional
changes.
Done using:
perl -p -i -e 's!^/[*]*/\n!!' security/keys/*.c
perl -p -i -e 's!} /[*] end [a-z0-9_]*[(][)] [*]/\n!}\n!' security/keys/*.c
sed -i -s -e ": next" -e N -e 's/^\n[}]$/}/' -e t -e P -e 's/^.*\n//' -e "b next" security/keys/*.c
To remove /*****/ lines, remove comments on the closing brace of a
function to name the function and remove blank lines before the closing
brace of a function.
Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: fix up CIFSSMBEcho for unaligned access
cifs: fix unaligned accesses in cifsConvertToUCS
cifs: clean up unaligned accesses in cifs_unicode.c
cifs: fix unaligned access in check2ndT2 and coalesce_t2
cifs: clean up unaligned accesses in validate_t2
cifs: use get/put_unaligned functions to access ByteCount
cifs: move time field in cifsInodeInfo
cifs: TCP_Server_Info diet
CIFS: Implement cifs_strict_readv (try #4)
CIFS: Implement cifs_file_strict_mmap (try #2)
CIFS: Implement cifs_strict_fsync
CIFS: Make cifsFileInfo_put work with strict cache mode
Linus Torvalds [Fri, 21 Jan 2011 21:38:57 +0000 (13:38 -0800)]
Merge branch 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
* 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: note the nested NOT_RUNNING test in worker_clr_flags() isn't a noop
workqueue: relax lockdep annotation on flush_work()
Linus Torvalds [Fri, 21 Jan 2011 21:34:39 +0000 (13:34 -0800)]
Merge branches 'fixes' and 'fwnet' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: core: fix unstable I/O with Canon camcorder
* 'fwnet' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: net: is not experimental anymore
firewire: net: invalidate ARP entries of removed nodes
Michal Simek [Fri, 21 Jan 2011 07:49:56 +0000 (08:49 +0100)]
mm: System without MMU do not need pte_mkwrite
The patch "thp: export maybe_mkwrite" (commit 14fd403f2146) breaks
systems without MMU.
Error log:
CC arch/microblaze/mm/init.o
In file included from include/linux/mman.h:14,
from arch/microblaze/mm/consistent.c:24:
include/linux/mm.h: In function 'maybe_mkwrite':
include/linux/mm.h:482: error: implicit declaration of function 'pte_mkwrite'
include/linux/mm.h:482: error: incompatible types in assignment
Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Although the last_pfn obtained from the startup info is 0x26700, which
should in turn not be hit, the additional 8MB which are added as extra
memory normally seem to be ok. This lead to looking into the initial
p2m tree construction, which uses the smaller value and assuming that
there is other code handling the extra memory.
When the p2m tree is set up, the leaves are directly pointed to the
array which the domain builder set up. But if the mapping is not on a
boundary that fits into one p2m page, this will result in the last leaf
being only partially valid. And as the invalid entries are not
initialized in that case, things go badly wrong.
I am trying to fix that by checking whether the current leaf is a
complete map and if not, allocate a completely new page and copy only
the valid pointers there. This may not be the most efficient or elegant
solution, but at least it seems to allow me booting DomUs with memory
assignments all over the range.
Thomas Gleixner [Wed, 19 Jan 2011 18:41:35 +0000 (19:41 +0100)]
genirq: Remove __do_IRQ
All architectures are finally converted. Remove the cruft.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Mike Frysinger <vapier@gentoo.org> Cc: David Howells <dhowells@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Michal Simek <monstr@monstr.eu> Acked-by: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jeff Dike <jdike@addtoit.com>
Thomas Gleixner [Wed, 22 Sep 2010 17:13:16 +0000 (19:13 +0200)]
m32r: Cleanup direct irq_desc access
The irq descriptors are already initialized by the generic
code. Remove the redundant init code and set the irq chip with the
proper accessor function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Paul Mundt <lethal@linux-sh.org>
Thomas Gleixner [Wed, 19 Jan 2011 11:26:32 +0000 (12:26 +0100)]
h8300: Use generic irq Kconfig
Switch to the generic irq Kconfig. h8300 has all irq chips converted
to the new functions, so select the GENERIC_HARDIRQS_NO_DEPRECATED
switch as well. Fixup the resulting fallout in show_interrupts().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Paul Mundt <lethal@linux-sh.org>
Thomas Gleixner [Wed, 19 Jan 2011 11:18:57 +0000 (12:18 +0100)]
h8300: Convert interrupt handling to flow handler
__do_IRQ is deprecated so h8300 needs to be converted to proper flow
handling. The irq chip is simple and does not required any
mask/ack/eoi functions, so we can use handle_simple_irq.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Paul Mundt <lethal@linux-sh.org>
Ben Hutchings [Sat, 8 Jan 2011 14:24:01 +0000 (14:24 +0000)]
powerpc/boot/dts: Install dts from the right directory
The dts-installed variable is initialised using a wildcard path that
will be expanded relative to the build directory. Use the existing
variable dtstree to generate an absolute wildcard path that will work
when building in a separate directory.
Reported-by: Gerhard Pircher <gerhard_pircher@gmx.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Tested-by: Gerhard Pircher <gerhard_pircher@gmx.net> [against 2.6.32] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Tue, 11 Jan 2011 19:52:31 +0000 (19:52 +0000)]
powerpc: machine_check_generic is wrong on 64bit
Decoding machine checks is CPU specific and so machine_check_generic doesn't
do the right thing on 64bit chips. Luckily we never call into this code
because we call ppc_md.machine_check_exception instead if available.
Since we check cur_cpu_spec->machine_check before calling it, we may as
well remove machine_check_generic from 64bit archs.
Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Tue, 11 Jan 2011 19:50:51 +0000 (19:50 +0000)]
powerpc: Fix corruption when grabbing FWNMI data
The FWNMI code uses a global buffer without any locks to read the RTAS error
information. If two CPUs take a machine check at once then we will corrupt
this buffer.
Since most FWNMI rtas messages are not of the extended type, we can create a
64bit percpu buffer and use it where possible. If we do receive an extended
RTAS log then we fall back to the old behaviour of using the global buffer.
Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Tue, 11 Jan 2011 19:49:19 +0000 (19:49 +0000)]
powerpc: Rework pseries machine check handler
Rework pseries machine check handler:
- If MSR_RI isn't set, we cannot recover even if the machine check was fully
recovered
- Rename nonfatal to recovered
- Handle RTAS_DISP_LIMITED_RECOVERY
- Use BUS_MCEERR_AR instead of BUS_ADRERR
- Don't check all the RTAS error log fields when receiving a synchronous
machine check. Recent versions of the pseries firmware do not fill them
in during a machine check and instead send a follow up error log with
the detailed information. If we see a synchronous machine check, and we
came from userspace then kill the task.
Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Tue, 11 Jan 2011 19:48:14 +0000 (19:48 +0000)]
powerpc: Don't silently handle machine checks from userspace
If a machine check comes from userspace we send a SIGBUS to the task and
fail to printk anything.
If we are taking machine checks due to bad hardware we want to know about
it right away. Furthermore if we don't complain loudly then it will look
a lot like a bug in the userspace application, potentially causing a lot
of confusion.
Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Tue, 11 Jan 2011 19:46:29 +0000 (19:46 +0000)]
powerpc: Never halt RTAS error logging after receiving an unrecoverable machine check
Newer versions of the System p firwmare send a partial RTAS error log in the
machine check handler with a more detailed response appearing sometime later
via check event.
This means at machine check time we do not have enough information to
ascertain exactly what went on. Furthermore, I have found the RTAS error
logs in the machine check handler contain no useful information, so halting on
them makes little sense. If we want to halt it would make more sense to do
it following the error log received sometime later via check event.
In light of this, never halt the error log in the pseries machine
check handler.
Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Anton Blanchard [Thu, 6 Jan 2011 18:00:36 +0000 (18:00 +0000)]
powerpc/kdump: Disable ftrace during kexec
We should disable ftrace during kexec, some of the tracers are very invasive
and we do not want them going off while doing the low level work of swapping
one kernel out for another. This mirrors what we do on x86.
Even though we cannot return from a kexec on powerpc (since we do not implement
CONFIG_KEXEC_JUMP), add the restore code in case we do one day.
Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tejun Heo [Mon, 3 Jan 2011 03:49:25 +0000 (03:49 +0000)]
powerpc/cell: Use system_wq in cpufreq_spudemand
With cmwq, there's no reason to use a separate workqueue in
cpufreq_spudemand. Use system_wq instead. The work items are already
sync canceled on stop, so it's already guaranteed that no work is
running when spu_gov_exit() is entered.
Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: Dave Jones <davej@redhat.com> Cc: cpufreq@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
projects / linux-beck.git / log