We need to set the thread priority to medium when entering all exceptions. 
We may have been executing in low priority (eg the idle loop), but
definitely do not want to remain in that priority for the duration of the
exception (eg a device interrupt).
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Due to speculative execution, a CPU may execute some instructions after the
rfid.  This makes profiles confusing, since profiling ticks could end up in
those instructions following the rfid that are never executed.

Add a branch to self after each rfid to avoid this.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Print the correct domain when a PCI resource allocation fails.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- Remove unused includes.
- Be consistent about printing irq numbers, avoid a mix of decimal and
  hexadecimal.
- Remove prototypes from xics.c, they should be in xics.h.
- Remove infinite loop on failure, and instead use panic. Panic has a chance to
  log the error message on the LED panel and reboot the box, a while(1) loop
  does not.
- xics isnt compiled for iseries any more, so no need for the
  CONFIG_PPC_PSERIES hack.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Here's a fix for the 32-bit PTRACE_GETEVENTMSG ptrace call that handles the
passing of a 32-bit user address.  Please apply, thanks.
Signed-off-by: John Engel <jhe@us.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch just cleans up arch/ppc64/kernel/pci_dn.c a bit, including:
	- remove it from the iSeries build completely
	- small changes to Makefile
	- remove the "post" parameter from traverse_pci_devices as
	  noone used it
	- make traverse_all_pci_devices static
	- remove CONFIG_PPC_PSERIES tests as we no longer build for iSeries
	- some reformatting (closer to "standard")
	- remove some of pointer casts

This has been built (with default config) on pSeries and pmac and built and
run on iSeries.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix ppc64 free_irq.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

qeth network driver performance improvements. The ping time on the
HiperSockets interface drops from 250 usecs to 50 usecs and the 1 bytes
request/response test improves from 70000 to 110000 transactions.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Andreas Herrmann <aherrman@de.ibm.com>

zfcp host adapater change:
 - Fix call to close_physical_port to prevent devices going offline
   after error recovery.
 - Fix return value of sysfs port_remove attribute store function.
 - Replace reboot notifier with device driver shutdown function.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Prefix debug feature variables with ctc to avoid name space problems.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Use msleep() instead of schedule_timeout() to guarantee the task
delays for the desired time.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

common i/o layer changes:
 - Set state of a disconnected device to offline before calling
   ccw_device_online, otherwise the device doesn't come up again.
 - Check for channel end when trying to find out if basic sense
   was successful.
 - Fix error handling in new_channel_path.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

s390 core changes:
 - Add 32 bit compat code for ptrace requests PTRACE_GETEVENTMSG,
   PTRACE_GETSIGINFO and PTRACE_SETSIGINFO.
 - Make non-smp kernel compile.
 - Regenerate default configuration.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Art Haas <ahaas@airmail.net>

The 1.3->1.4 changes to the arch/sparc/lib/copy_user.S file added parenthesis
to a number of macros within that file.  The BK changlog associated with this
change indicate the change was to make the file work with gcc-3.3.

When looking at the changes made, I see that similar macros exist in memcpy.S
as well, so would a patch adding parens to that file be worthwhile?  Also,
just what was the problem with gcc-3.3 that was resolved by adding the
parenthesis?  Macro mis-expansion I'm guessing.
Signed-off-by: Art Haas <ahaas@airmail.net>
Signed-off-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

SMP support is in need of a great deal of work to port it from 2.2 and 2.4.
Add a dependency on BROKEN in the Kconfig to warn the unwary.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The sun4 port does not support SMP.  Disable it via Kconfig.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This variable is unused and causes noisy compiles.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

cache_decay_ticks needs to be defined in order for the kernel to link.  This
placeholder is inaccurate, however, other, more grave SMP issues need to be
addressed first.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove leftover references to now-unused start_secondary()
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

smp_reschedule_irq() mysteriously vanished sometime after 2.4.  This patch
reinstates it so that the kernel will link properly and so cpus will set
TIF_NEED_RESCHED when it's asked of them.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The SMP initialization functions try to do btfixups on the wrong symbols for
smp_processor_id(), which is now implemented in terms of
current_thread_info()->cpu.  hard_smp_processor_id() etc.  are now in use
where smp_processor_id() was once used.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

cpu_present_map is a cpumask_t.  Sweep arch/sparc/kernel/sun4d_smp.c so that
it is treated as such.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

An analysis of the code determined that AP initialization called init_idle()
no less than three times, 2 out of the three with incorrect numbers of
arguments.  This patch removes the superfluous calls.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

FLUSH_BEGIN() is a nop at the moment, so the mm variable for its argument
trips a warning.  Pass vma->vm_mm directly instead.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix a race identified by Chris Mason <mason@suse.com>

journal_unmap_buffer -> __dispose_buffers has the j_list_lock and the
jbd_lock_bh_state held.

journal_get_write_access calls journal_put_journal_head, which takes
jbd_lock_bh_journal_head(bh) and doesn't seem to have any other locks held.

Since journal_unmap_buffers trusts the buffer_jbd bit to see if we need to
call __dispose_buffer, and nobody seems to test buffer_jbd after taking
jbd_lock_bh_journal_head.  The kernel dereferences a null jh pointer in
__journal_remove_journal_head.


The patch fixes this by using journal_grab_journal_head() in
journal_unmap_buffer().  It ensures that we either grab and pin the
journal_head if the bh has one, or we bale out if the bh doesn't have a
journal_head.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Karsten Keil's patch entitled "[ISDN]: Fix kernel PPP/IPPP active/passiv
filter code" that went in back in April was an attempt to solve a real
problem - namely that the libpcap maintainers have removed useful
functionality that pppd was using - but his fix broke existing pppd
binaries and IMO didn't end up actually solving the problem.

This patch reverts the change to ppp_generic.c so that existing pppd
binaries work again.  I am going to have to work out a proper fix, which
may involve further changes to ppp_generic.c, but I will make sure existing
pppd binaries still work.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

In the top-level Makefile a number of locale related environment
variables were preset to give a small speed up when building the kernel.

Unfortunately this had the bad sideeffect that the variable
CFLAGS_vmlinux.lds.o lost the exported vaule in some setups (obviously
not mine).  This smells like a make issue - but the best solution is
simply to drop presetting the locale related variables.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We use a FMODE_LSEEK flag to match the existing read/write
bits. This allows us to check for seekability on a VFS level
for lseek/pread/pwrite, and cleans things up.

Update some sites that used the numeric constants to use 
the symbolic values instead.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Patch from: Nishanth Aravamudan

Use msleep() instead of schedule_timeout() to
guarantee the task delays for the desired time.

Signed-off-by: Nishanth Aravamudan
Signed-off-by: Russell King

into ppc970.osdl.org:/home/torvalds/v2.6/linux

We're only 32-bit ARMs, so testing this symbol in 32-bit only code
is unnecessary.

Patch from: Nishanth Aravamudan

Use msleep() instead of schedule_timeout() to
guarantee the task delays for the desired time.

Signed-off-by: Nishanth Aravamudan
Signed-off-by: Russell King

Patch from Ben Dooks

Fixed mis-spelled time initialisation calls and
a bad prototype in the time header

Fixes for patch 1962/1

Patch from Ben Dooks

Rename to Thorcom, and added extra lines to help

Patch from Ben Dooks

Updated default configuration file to include all the
boards possible with this architecture

Patch from Kevin Hilman

The following patch allows the bootpImage to be loaded and executed
from a non-zero address.  On OMAP platforms for example, the physical
address for SDRAM is 0x10000000 and not zero.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Signed-off-by: David S. Miller <davem@redhat.com>

The following corrects how we pass CPU flags to gas.  Previous, AFLAGS
was incorrectly assumed to be pased directly to $(AS), which is not the
case.

Concept ack'd by Sam Ravnborg.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>