diff options
| -rw-r--r-- | lib/sbi/sbi_pmu.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/sbi/sbi_pmu.c b/lib/sbi/sbi_pmu.c index 5b845f8..376afec 100644 --- a/lib/sbi/sbi_pmu.c +++ b/lib/sbi/sbi_pmu.c @@ -181,6 +181,9 @@ static int pmu_add_hw_event_map(u32 eidx_start, u32 eidx_end, u32 cmap, int i = 0; bool is_overlap; struct sbi_pmu_hw_event *event = &hw_event_map[num_hw_events]; + struct sbi_scratch *scratch = sbi_scratch_thishart_ptr(); + int hw_ctr_avail = sbi_hart_mhpm_count(scratch); + uint32_t ctr_avail_mask = ((uint32_t)(~0) >> (32 - (hw_ctr_avail + 3))); /* The first two counters are reserved by priv spec */ if (eidx_start > SBI_PMU_HW_INSTRUCTIONS && (cmap & SBI_PMU_FIXED_CTR_MASK)) @@ -208,7 +211,8 @@ static int pmu_add_hw_event_map(u32 eidx_start, u32 eidx_end, u32 cmap, } event->select_mask = select_mask; - event->counters = cmap; + /* Map the only the counters that are available in the hardware */ + event->counters = cmap & ctr_avail_mask; event->select = select; num_hw_events++; |