linux-stable.git/arch/powerpc/kernel/traps.c, branch v3.0

arch/powerpc: use printk_ratelimited instead of printk_ratelimit

2011-06-29T05:31:01+00:00

Since printk_ratelimit() shouldn't be used anymore (see comment in
include/linux/printk.h), replace it with printk_ratelimited.

Signed-off-by: Christian Dietrich 
Signed-off-by: Benjamin Herrenschmidt

powerpc/e500: fix breakage with fsl_rio_mcheck_exception

2011-06-22T11:15:16+00:00

The wrong MCSR bit was being used on e500mc.  MCSR_BUS_RBERR only exists
on e500v1/v2.  Use MCSR_LD on e500mc, and remove all MCSR checking
in fsl_rio_mcheck_exception as we now no longer call that function
if the appropriate bit in MCSR is not set.

If RIO support was enabled at compile-time, but was never probed, just
return from fsl_rio_mcheck_exception rather than dereference a NULL
pointer.

TODO: There is still a remaining, though comparitively minor, issue in
that this recovery mechanism will falsely engage if there's an unrelated
MCSR_LD event at the same time as a RIO error.

Signed-off-by: Scott Wood 
Signed-off-by: Kumar Gala

powerpc/fsl_rio: move machine_check handler

2011-05-20T13:46:57+00:00

Add support for machine_check support into machine_check_e500 and
machine_check_e500mc.

Signed-off-by: Shaohui Xie 
Cc: Li Yang 
Cc: Roy Zang 
Cc: Alexandre Bounine 
Signed-off-by: Kumar Gala

Merge remote branch 'origin/master' into merge

2011-05-20T05:36:52+00:00

Manual merge of arch/powerpc/kernel/smp.c and add missing scheduler_ipi()
call to arch/powerpc/platforms/cell/interrupt.c

Signed-off-by: Benjamin Herrenschmidt

sysfs: remove "last sysfs file:" line from the oops messages

2011-05-13T23:05:51+00:00

On some arches (x86, sh, arm, unicore, powerpc) the oops message would
print out the last sysfs file accessed.

This was very useful in finding a number of sysfs and driver core bugs
in the 2.5 and early 2.6 development days, but it has been a number of
years since this file has actually helped in debugging anything that
couldn't also be trivially determined from the stack traceback.

So it's time to delete the line.  This is good as we need all the space
we can get for oops messages at times on consoles.

Acked-by: Phil Carmody 
Acked-by: Ingo Molnar 
Cc: Andrew Morton 
Cc: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

powerpc: Convert old cpumask API into new one

2011-05-04T05:22:59+00:00

Adapt new API.

Almost change is trivial. Most important change is the below line
because we plan to change task->cpus_allowed implementation.

-       ctx->cpus_allowed = current->cpus_allowed;

Signed-off-by: KOSAKI Motohiro 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Use MSR_64BIT in places

2011-04-27T04:18:44+00:00

Use the new MSR_64BIT in a few places. Some of these are already ifdef'ed
for BOOKE vs BOOKS, but it's still clearer, MSR_SF does not immediately
parse as "MSR bit for 64bit".

Signed-off-by: Michael Ellerman 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Per process DSCR + some fixes (try#4)

2011-04-27T04:18:19+00:00

The DSCR (aka Data Stream Control Register) is supported on some
server PowerPC chips and allow some control over the prefetch
of data streams.

This patch allows the value to be specified per thread by emulating
the corresponding mfspr and mtspr instructions. Children of such
threads inherit the value. Other threads use a default value that
can be specified in sysfs - /sys/devices/system/cpu/dscr_default.

If a thread starts with non default value in the sysfs entry,
all children threads inherit this non default value even if
the sysfs value is changed later.

Signed-off-by: Alexey Kardashevskiy 
Signed-off-by: Benjamin Herrenschmidt

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi

powerpc: Don't silently handle machine checks from userspace

2011-01-21T03:08:37+00:00

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 
Signed-off-by: Benjamin Herrenschmidt