diff options
Diffstat (limited to 'arch/x86/events/amd/uncore.c')
| -rw-r--r-- | arch/x86/events/amd/uncore.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/events/amd/uncore.c b/arch/x86/events/amd/uncore.c index ff4238eff087..d568afc705d2 100644 --- a/arch/x86/events/amd/uncore.c +++ b/arch/x86/events/amd/uncore.c @@ -158,6 +158,16 @@ out: hwc->event_base_rdpmc = uncore->rdpmc_base + hwc->idx; hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED; + /* + * The first four DF counters are accessible via RDPMC index 6 to 9 + * followed by the L3 counters from index 10 to 15. For processors + * with more than four DF counters, the DF RDPMC assignments become + * discontiguous as the additional counters are accessible starting + * from index 16. + */ + if (is_nb_event(event) && hwc->idx >= NUM_COUNTERS_NB) + hwc->event_base_rdpmc += NUM_COUNTERS_L3; + if (flags & PERF_EF_START) amd_uncore_start(event, PERF_EF_RELOAD); |