[PATCH v6 0/5] Early node associativity

[Srikar Dronamraju]

Note: (Only patch 4 changes from v5)

Abdul reported  a warning on a shared lpar.
"WARNING: workqueue cpumask: online intersect > possible intersect".
This is because per node workqueue possible mask is set very early in the
boot process even before the system was querying the home node
associativity. However per node workqueue online cpumask gets updated
dynamically. Hence there is a chance when per node workqueue online cpumask
is a superset of per node workqueue possible mask.

Link for v5: http://lkml.kernel.org/r/20191216144904.6776-1-srikar@linux.vnet.ibm.com
Changelog: v5->v6
 - Handled comments from Michael Ellerman
 - Rebased to v5.5-rc6

Link for v4: https://patchwork.ozlabs.org/patch/1161979
Changelog: v4->v5:
- Rebased to v5.5-rc2

Link for v3: http://lkml.kernel.org/r/20190906135020.19772-1-srikar@linux.vnet.ibm.com
Changelog: v3->v4
 - Added a warning as suggested by Nathan Lynch.

Link for v2: http://lkml.kernel.org/r/20190829055023.6171-1-srikar@linux.vnet.ibm.com
Changelog: v2->v3
 - Handled comments from Nathan Lynch.

Link for v1: https://patchwork.ozlabs.org/patch/1151658
Changelog: v1->v2
 - Handled comments from Nathan Lynch.

Cc: Michael Ellerman <mpe at ellerman.id.au>
Cc: Nicholas Piggin <npiggin at gmail.com>
Cc: Abdul Haleem <abdhalee at linux.vnet.ibm.com>
Cc: Nathan Lynch <nathanl at linux.ibm.com>
Cc: linuxppc-dev at lists.ozlabs.org
Cc: Satheesh Rajendran <sathnaga at linux.vnet.ibm.com>

Srikar Dronamraju (5):
  powerpc/vphn: Check for error from hcall_vphn
  powerpc/numa: Handle extra hcall_vphn error cases
  powerpc/numa: Use cpu node map of first sibling thread
  powerpc/numa: Early request for home node associativity
  powerpc/numa: Remove late request for home node associativity

 arch/powerpc/include/asm/topology.h   |  4 --
 arch/powerpc/kernel/smp.c             |  5 --
 arch/powerpc/mm/numa.c                | 97 +++++++++++++++++++++++++++--------
 arch/powerpc/platforms/pseries/vphn.c |  3 +-
 4 files changed, 78 insertions(+), 31 deletions(-)

-- 
1.8.3.1