linux/drivers/s390
Michael Holzheu c29a7baf09 s390/numa: add emulation support
NUMA emulation (aka fake NUMA) distributes the available memory to nodes
without using real topology information about the physical memory of the
machine.

Splitting the system memory into nodes replicates the memory management
structures for each node. Particularly each node has its own "mm locks"
and its own "kswapd" task.

For large systems, under certain conditions, this results in improved
system performance and/or latency based on reduced pressure on the mm
locks and the kswapd tasks.

NUMA emulation distributes CPUs to nodes while respecting the original
machine topology information. This is done by trying to avoid to separate
CPUs which reside on the same book or even on the same MC. Because the
current Linux scheduler code requires a stable cpu to node mapping, cores
are pinned to nodes when the first CPU thread is set online.

This patch is based on the initial implementation from Philipp Hachtmann.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-08-04 14:06:53 +02:00
..
block s390/dasd: fix kernel panic when alias is set offline 2015-07-13 11:02:14 +02:00
char s390/numa: add emulation support 2015-08-04 14:06:53 +02:00
cio s390/cio: Implement proper Link Incident Record handling 2015-07-22 09:58:06 +02:00
crypto s390/zcrypt: enable s390 hwrng to seed kernel entropy 2015-07-01 09:34:37 +02:00
kvm KVM: s390: virtio-ccw: don't overwrite config space values 2015-07-03 18:55:18 +02:00
net s390/lcs: Fix null-pointer access in msg 2015-05-18 12:14:18 -04:00
scsi scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
Makefile