On 11/27/20 6:03 AM, Wei Li wrote:
Armv8.3 extends the SPE by adding:
- Alignment field in the Events packet, and filtering on this event
using PMSEVFR_EL1.
- Support for the Scalable Vector Extension (SVE).
The main additions for SVE are:
- Recording the vector length for SVE operations in the Operation Type
packet. It is not possible to filter on vector length.
- Incomplete predicate and empty predicate fields in the Events packet,
and filtering on these events using PMSEVFR_EL1.
Update the check of pmsevfr for empty/partial predicated SVE and
alignment event in SPE driver. For adaption by the version of SPE,
expose 'pmsver' as cap attribute to userspace.
Signed-off-by: Wei Li <[email protected]>
nit: Do we need to update the Kconfig help text too ? Right now that says :
--
tristate "Enable support for the ARMv8.2 Statistical Profiling Extension""
....
help
Enable perf support for the ARMv8.2 Statistical Profiling
Extension, which provides periodic sampling of operations in
--
Suzuki
