[PATCH 0/2] x86/numa: introduce per-node flush_lock

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

Hello,

I've had this patches pending for quite some time, but never sent them.
Kind of RFC because I'm unsure whether the approach is the best, there's
however a need to split the flush_lock, as on hosts with a high number
of CUPs there's there's a non-trivial amount of contention around it.

First patch is a preparatory change to allow using per-NUMA node locks,
second patch introduces a per-node flush_lock.

Thanks, Roger.

Roger Pau Monne (2):
  x86/numa: add per-node lock profile objects
  x86/numa: introduce per-NUMA node flush locks

 tools/misc/xenlockprof.c               |  5 ++
 xen/arch/x86/include/asm/irq-vectors.h |  9 ++-
 xen/arch/x86/include/asm/numa.h        |  3 +
 xen/arch/x86/include/asm/smp.h         |  3 +
 xen/arch/x86/numa.c                    | 95 ++++++++++++++++++++++++++
 xen/arch/x86/smp.c                     | 16 +++--
 xen/arch/x86/smpboot.c                 |  3 +
 xen/common/numa.c                      | 23 +++++++
 xen/common/spinlock.c                  |  1 +
 xen/include/public/sysctl.h            |  3 +-
 xen/include/xen/numa.h                 | 13 ++++
 11 files changed, 168 insertions(+), 6 deletions(-)

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2.49.0