linux

iv/linux

History

Srikar Dronamraju f9f130ff2e powerpc/numa: Detect support for coregroup

Add support for grouping cores based on the device-tree classification.
- The last domain in the associativity domains always refers to the
core.
- If primary reference domain happens to be the penultimate domain in
the associativity domains device-tree property, then there are no
coregroups. However if its not a penultimate domain, then there are
coregroups. There can be more than one coregroup. For now we would be
interested in the last or the smallest coregroups, i.e one sub-group
per DIE.

Currently there are no firmwares that are exposing this grouping. Hence
allow the basis for grouping to be abstract.  Once the firmware starts
using this grouping, code would be added to detect the type of grouping
and adjust the sd domain flags accordingly.

Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200810071834.92514-8-srikar@linux.vnet.ibm.com

2020-09-16 22:13:31 +10:00

alpha

iomap: constify ioreadX() iomem argument (as in generic implementation)

2020-08-14 19:56:57 -07:00

arc

mm/gup: remove task_struct pointer for all gup code

2020-08-12 10:58:04 -07:00

arm

all arch: remove system call sys_sysctl

2020-08-14 19:56:56 -07:00

arm64

- Allow booting of late secondary CPUs affected by erratum 1418040