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762ec15707
Newer firmware on Power systems can transparently reassign platform resources (CPU and Memory) in use. For instance, if a processor or memory unit is predicted to fail, the platform may transparently move the processing to an equivalent unused processor or the memory state to an equivalent unused memory unit. However, reassigning resources across NUMA boundaries may alter the performance of the partition. When such reassignment is necessary, the Platform Resource Reassignment Notification (PRRN) option provides a mechanism to inform the Linux kernel of changes to the NUMA affinity of its platform resources. When rtasd receives a PRRN event, it needs to make a series of RTAS calls (ibm,update-nodes and ibm,update-properties) to retrieve the updated device tree information. These calls are already handled in the pseries_devicetree_update() routine used in partition migration. This patch exposes pseries_devicetree_update() to make it accessible to other pseries routines, this patch also updates pseries_devicetree_update() to take a 32-bit scope parameter. The scope value, which was previously hard coded to 1 for partition migration, is used for the RTAS calls ibm,update-nodes/properties to update the device tree. Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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| crypto | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| perf | ||
| platforms | ||
| sysdev | ||
| xmon | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| relocs_check.pl | ||