tree 99422c4201161509f27b01fbf9b9a59ad4cfbb12
parent 090fa99d7cf519a8b7d2685ae9f84a2fbe46b083
author Yu Chien Peter Lin <peterlin@andestech.com> 1701348122 +0800
committer Anup Patel <anup@brainfault.org> 1701864001 +0530

sbi: sbi_pmu: Add hw_counter_filter_mode() to pmu device

Add support for custom PMU extensions to set inhibit bits
on custom CSRs by introducing the PMU device callback
hw_counter_filter_mode(). This allows the perf tool to
restrict event counting under a specified privileged
mode by appending a modifier, e.g. perf record -e event:k
to count events only happening in kernel mode.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>