diff options
Diffstat (limited to 'arch/arc/kernel/perf_event.c')
| -rw-r--r-- | arch/arc/kernel/perf_event.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index 64261c2711b1..181baeed4495 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -90,6 +90,10 @@ static int arc_pmu_cache_event(u64 config) if (ret == CACHE_OP_UNSUPPORTED) return -ENOENT; + pr_debug("init cache event: type/op/result %d/%d/%d with h/w %d \'%s\'\n", + cache_type, cache_op, cache_result, ret, + arc_pmu_ev_hw_map[ret]); + return ret; } @@ -106,8 +110,9 @@ static int arc_pmu_event_init(struct perf_event *event) if (arc_pmu->ev_hw_idx[event->attr.config] < 0) return -ENOENT; hwc->config = arc_pmu->ev_hw_idx[event->attr.config]; - pr_debug("initializing event %d with cfg %d\n", - (int) event->attr.config, (int) hwc->config); + pr_debug("init event %d with h/w %d \'%s\'\n", + (int) event->attr.config, (int) hwc->config, + arc_pmu_ev_hw_map[event->attr.config]); return 0; case PERF_TYPE_HW_CACHE: ret = arc_pmu_cache_event(event->attr.config); @@ -260,19 +265,22 @@ static int arc_pmu_device_probe(struct platform_device *pdev) arc_pmu->n_counters, arc_pmu->counter_size, cc_bcr.c); cc_name.str[8] = 0; - for (i = 0; i < PERF_COUNT_HW_MAX; i++) + for (i = 0; i < PERF_COUNT_ARC_HW_MAX; i++) arc_pmu->ev_hw_idx[i] = -1; + /* loop thru all available h/w condition indexes */ for (j = 0; j < cc_bcr.c; j++) { write_aux_reg(ARC_REG_CC_INDEX, j); cc_name.indiv.word0 = read_aux_reg(ARC_REG_CC_NAME0); cc_name.indiv.word1 = read_aux_reg(ARC_REG_CC_NAME1); + + /* See if it has been mapped to a perf event_id */ for (i = 0; i < ARRAY_SIZE(arc_pmu_ev_hw_map); i++) { if (arc_pmu_ev_hw_map[i] && !strcmp(arc_pmu_ev_hw_map[i], cc_name.str) && strlen(arc_pmu_ev_hw_map[i])) { - pr_debug("mapping %d to idx %d with name %s\n", - i, j, cc_name.str); + pr_debug("mapping perf event %2d to h/w event \'%8s\' (idx %d)\n", + i, cc_name.str, j); arc_pmu->ev_hw_idx[i] = j; } } |