Hello,
This allows run-time fallback from Linux (or MacOS k)perf to the raw
cycle counter. The main purpose is to deal with RISC-V's hard
deprecation of RDCYCLE access from userspace, all the while preserving
compatibility with existing kernels which do not support Linux perf.
This is also usable as a baseline to fallback further to another
counter, presumably RDTIME (and Arm's equivalent).
Main change since version 2 is retaining inline AV_READ_TIME in
configuration where AV_READ_TIME was/is used.
----------------------------------------------------------------
Rémi Denis-Courmont (6):
checkasm: make perf macros functional
checkasm: use pointers for start/stop functions
checkasm: remove unused variables
checkasm: make bench clean-up also a function pointer
checkasm: allow run-time fallback to AV_READ_TIME
configure: enable Linux perf on RISC-V by default
configure | 2 +-
tests/checkasm/checkasm.c | 99 +++++++++++++++++++++++++++++++++--------------
tests/checkasm/checkasm.h | 50 +++++++-----------------
3 files changed, 85 insertions(+), 66 deletions(-)
--
雷米‧德尼-库尔蒙
http://www.remlab.net/
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