On 05/07/2021 16:21, Anatoly Burakov wrote:
> Use RTM and WAITPKG instructions to perform a wait-for-writes similar to
> what UMWAIT does, but without the limitation of having to listen for
> just one event. This works because the optimized power state used by the
> TPAUSE instruction will cause a wake up on RTM transaction abort, so if
> we add the addresses we're interested in to the read-set, any write to
> those addresses will wake us up.
>
> Signed-off-by: Konstantin Ananyev <konstantin.anan...@intel.com>
> Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
> ---
>
> Notes:
> v4:
> - Fixed bugs in accessing the monitor condition
> - Abort on any monitor condition not having a defined callback
>
> v2:
> - Adapt to callback mechanism
>
> doc/guides/rel_notes/release_21_08.rst | 2 +
> lib/eal/arm/rte_power_intrinsics.c | 11 +++
> lib/eal/include/generic/rte_cpuflags.h | 2 +
> .../include/generic/rte_power_intrinsics.h | 35 +++++++++
> lib/eal/ppc/rte_power_intrinsics.c | 11 +++
> lib/eal/version.map | 3 +
> lib/eal/x86/rte_cpuflags.c | 2 +
> lib/eal/x86/rte_power_intrinsics.c | 73 +++++++++++++++++++
> 8 files changed, 139 insertions(+)
>
Acked-by: Ray Kinsella <m...@ashroe.eu>
