linux.git/arch/powerpc/platforms/pseries/hotplug-cpu.c, branch v3.0

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/xics: Rewrite XICS driver

2011-04-20T01:02:35+00:00

This is a significant rework of the XICS driver, too significant to
conveniently break it up into a series of smaller patches to be honest.

The driver is moved to a more generic location to allow new platforms
to use it, and is broken up into separate ICP and ICS "backends". For
now we have the native and "hypervisor" ICP backends and one common
RTAS ICS backend.

The driver supports one ICP backend instanciation, and many ICS ones,
in order to accomodate future platforms with multiple possibly different
interrupt "sources" mechanisms.

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/pseries: Increase cpu die timeout

2010-07-31T05:04:15+00:00

In testing SMT disable, we have been regularly seeing the following
message:

Querying DEAD? cpu %i (%i) shows %i

This indicates the current delay in pseries_cpu_die where we wait
for the specified CPU to die, is insufficient. Usually, this does
not cause a problem, but we've seen this result in BUG_ON's going
off in the timer code when we try to migrate the timers off the
dead cpu while a timer is still running. Increasing this delay,
as is done in this patch, seems to resolve this issue.

Signed-off-by: Brian King 
Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Partition hibernation support

2010-07-09T01:26:17+00:00

Enables support for HMC initiated partition hibernation. This is
a firmware assisted hibernation, since the firmware handles writing
the memory out to disk, along with other partition information,
so we just mimic suspend to ram.

Signed-off-by: Brian King 
Signed-off-by: Benjamin Herrenschmidt

powerpc/cpumask: Update some comments

2010-05-06T07:41:59+00:00

Since the *_map cpumask variants are deprecated, change the comments to
instead refer to *_mask.

Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

powerpc/cpumask: Convert hotplug-cpu code to new cpumask API

2010-05-06T07:41:57+00:00

Convert hotplug-cpu code to new cpumask API.

Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Make query_cpu_stopped callable outside hotplug cpu

2010-05-06T06:49:25+00:00

This moves query_cpu_stopped() out of the hotplug cpu code and into
smp.c so it can called in other places and renames it to
smp_query_cpu_stopped().

It also cleans up the return values by adding some #defines

Cc: 
Signed-off-by: Michael Neuling 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Reduce printk from pseries_mach_cpu_die()

2010-03-09T00:57:10+00:00

Remove debug printks in pseries_mach_cpu_die().  These are
noisy at runtime.  Traceevents can be added to instrument this
section of code.

The following KERN_INFO printks are removed:

cpu 62 (hwid 62) returned from cede.
Decrementer value = b2802fff Timebase value = 2fa8f95035f4a
cpu 62 (hwid 62) got prodded to go online
cpu 58 (hwid 58) ceding for offline with hint 2

Signed-off-by: Vaidyanathan Srinivasan 
Cc: Gautham R Shenoy 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Move checks in pseries_mach_cpu_die()

2010-03-09T00:57:10+00:00

Rearrange condition checks for better code readability and
	prevention of possible race conditions when
	preferred_offline_state can potentially change during the
	execution of pseries_mach_cpu_die().  The patch will make
	pseries_mach_cpu_die() put cpu in one of the consistent states
	and not hit the run over BUG()

Signed-off-by: Vaidyanathan Srinivasan 
Cc: Gautham R Shenoy 
Signed-off-by: Benjamin Herrenschmidt