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lib: sbi: Do not clear active_events for cycle/instret when stopping

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Those events are enabled by default and should not be reset afterwards
since when using SBI_PMU_CFG_FLAG_SKIP_MATCH, it leads to unaccessible
counters after the first use.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Alexandre Ghiti
2023-04-13 16:02:18 +02:00
committed by Anup Patel
parent e41dbb507c
commit bdb3c42bca
1 changed files with 1 additions and 1 deletions
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2
lib/sbi/sbi_pmu.c
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@@ -532,7 +532,7 @@ int sbi_pmu_ctr_stop(unsigned long cbase, unsigned long cmask,
else
ret = pmu_ctr_stop_hw(cidx);
if (flag & SBI_PMU_STOP_FLAG_RESET) {
if (cidx > (CSR_INSTRET - CSR_CYCLE) && flag & SBI_PMU_STOP_FLAG_RESET) {
active_events[hartid][cidx] = SBI_PMU_EVENT_IDX_INVALID;
pmu_reset_hw_mhpmevent(cidx);
}