On Fri, May 12, 2023 at 10:53:16AM +0200, Alexandre Ghiti wrote: > Provide all the necessary bits in the generic riscv pmu driver to be > able to mmap perf events in userspace: the heavy lifting lies in the > driver backend, namely the legacy and sbi implementations. > > Note that arch_perf_update_userpage is almost a copy of arm64 code. > > Signed-off-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx> > --- > arch/riscv/kernel/Makefile | 2 +- > arch/riscv/kernel/perf_event.c | 58 ++++++++++++++++++++++++++++++++++ > drivers/perf/riscv_pmu.c | 41 ++++++++++++++++++++++++ > include/linux/perf/riscv_pmu.h | 4 +++ > 4 files changed, 104 insertions(+), 1 deletion(-) > create mode 100644 arch/riscv/kernel/perf_event.c > Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
