linux.git/include/asm-s390/sclp.h, branch master

[S390] move include/asm-s390 to arch/s390/include/asm

2008-08-01T18:42:05+00:00

Signed-off-by: Martin Schwidefsky

[S390] Move memory detection code to own file.

2008-07-14T08:02:17+00:00

Move memory detection code to own file and also simplify it.
Also add an interface which can be called at any time to get the
current memory layout. This interface is needed by our kernel
internal system dumper.

Cc: Peter Oberparleiter 
Cc: Michael Holzheu 
Cc: Frank Munzert 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] Get rid of additional_cpus kernel parameter.

2008-01-26T13:11:15+00:00

It caused only a lot of confusion. From now on cpu hotplug of up to
NR_CPUS will work by default. If somebody wants to limit that then
the possible_cpus parameter can be used.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] Standby cpu activation/deactivation.

2008-01-26T13:11:09+00:00

Add a new interface so that cpus can be put into standby state and
configured state.
Only offline cpus can be put into standby state or configured state.
For that the new percpu sysfs attribute "configure" must be used.
To put a cpu in standby state a "0" must be written to the attribute.
In order to switch it into configured state a "1" must be written to
the attribute.
Only cpus in configured state can be brought online.
In addition this patch introduces a static mapping of physical to
logical cpus. As a result only the sysfs directories of present cpus
will be created. To scan for new cpus the new sysfs attribute "rescan"
must be used.
Writing to /sys/devices/system/cpu/rescan will trigger a rescan of
cpus and will create directories for new cpus.

On IPL only configured cpus will be used. And on reboot/shutdown all
cpus will remain in their current state (configured/standby).

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] sclp: Test facility list before executing a service call.

2007-07-10T09:24:43+00:00

Check if a command is available before executing. Saves some
superfluous service calls that won't succeed anyway.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] sclp: introduce some new interfaces.

2007-07-10T09:24:42+00:00

Introduce some new interfaces so that random subsystems don't have to
mess around with sclp internal structures.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

[S390] zfcpdump support.

2007-04-27T14:01:44+00:00

s390 machines provide hardware support for creating Linux dumps on SCSI
disks. For creating a dump a special purpose dump Linux is used. The first
32 MB of memory are saved by the hardware before the dump Linux is
booted. Via an SCLP interface, the saved memory can be accessed from
Linux. This patch exports memory and registers of the crashed Linux to
userspace via a debugfs file. For more information refer to
Documentation/s390/zfcpdump.txt, which is included in this patch.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens

[S390] cio: Channel-path configure function.

2007-04-27T14:01:39+00:00

Add a new attribute to the channel-path sysfs directory through which
channel-path configure operations can be triggered. Also listen for
hardware events requesting channel-path configure operations and
process them accordingly.

Signed-off-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens

[S390] Convert memory detection into C code.

2007-02-05T20:18:37+00:00

Hopefully this will make it more maintainable and less error prone.
Code makes use of search_exception_tables(). Since it calls this
function before the kernel exeception table is sorted, there is an
early call to sort_main_extable().

This way it's easy to use the already present infrastructure of fixup
sections. Also this would allows to easily convert the rest of
head[31|64].S into C code.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky