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[v4,0/3] Use WFE for spinlock and ring

Message ID 20210707054341.1607419-1-ruifeng.wang@arm.com (mailing list archive)
Headers show
Series Use WFE for spinlock and ring | expand


Ruifeng Wang July 7, 2021, 5:43 a.m. UTC
The rte_wait_until_equal_xxx APIs abstract the functionality of 'polling
for a memory location to become equal to a given value'[1].

Use the API for the rte spinlock and ring implementations.
With the wait until equal APIs being stable, changes will not impact ABI.

[1] http://patches.dpdk.org/cover/62703/

Added meson option to expose WFE. (David, Bruce)

Series rebased. (David)

Gavin Hu (1):
  spinlock: use wfe to reduce contention on aarch64

Ruifeng Wang (2):
  ring: use wfe to wait for ring tail update on aarch64
  build: add option to enable wait until equal

 config/arm/meson.build                 | 2 +-
 lib/eal/include/generic/rte_spinlock.h | 4 ++--
 lib/ring/rte_ring_c11_pvt.h            | 4 ++--
 lib/ring/rte_ring_generic_pvt.h        | 3 +--
 meson_options.txt                      | 2 ++
 5 files changed, 8 insertions(+), 7 deletions(-)