[S390] topology: export cpu topology via proc/sysinfo
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Mon, 25 Oct 2010 14:10:54 +0000 (16:10 +0200)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Mon, 25 Oct 2010 14:10:21 +0000 (16:10 +0200)
commit96f4a70d8eb4d746b19d5b5510407c8ff0d00340
treec3e9ac41093211cb25c1c963707a159050f81edc
parentc30f91b6a264aef9ffb05e13931514c2a988c495
[S390] topology: export cpu topology via proc/sysinfo

Export the cpu configuration topology via sysinfo. Two new lines are
introduced:

CPU Topology HW:      0 0 0 4 6 4
CPU Topology SW:      0 0 0 0 4 24

The HW line describes the cpu topology nesting levels when the maximum
nesting level is used to get the corresponding SYSIB.
The SW line describes what Linux is actually using. In this case it
supports only two levels (CONFIG_SCHED_BOOK off) and therefore the
hardware folded the two lower levels in the SYSIB response block.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/topology.h
arch/s390/kernel/sysinfo.c
arch/s390/kernel/topology.c