diff options
Diffstat (limited to 'drivers/interconnect/qcom/bcm-voter.c')
| -rw-r--r-- | drivers/interconnect/qcom/bcm-voter.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c index a3d2ef1d9903..609db9c95fd7 100644 --- a/drivers/interconnect/qcom/bcm-voter.c +++ b/drivers/interconnect/qcom/bcm-voter.c @@ -52,8 +52,20 @@ static int cmp_vcd(void *priv, struct list_head *a, struct list_head *b) return 1; } +static u64 bcm_div(u64 num, u32 base) +{ + /* Ensure that small votes aren't lost. */ + if (num && num < base) + return 1; + + do_div(num, base); + + return num; +} + static void bcm_aggregate(struct qcom_icc_bcm *bcm) { + struct qcom_icc_node *node; size_t i, bucket; u64 agg_avg[QCOM_ICC_NUM_BUCKETS] = {0}; u64 agg_peak[QCOM_ICC_NUM_BUCKETS] = {0}; @@ -61,22 +73,21 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm) for (bucket = 0; bucket < QCOM_ICC_NUM_BUCKETS; bucket++) { for (i = 0; i < bcm->num_nodes; i++) { - temp = bcm->nodes[i]->sum_avg[bucket] * bcm->aux_data.width; - do_div(temp, bcm->nodes[i]->buswidth * bcm->nodes[i]->channels); + node = bcm->nodes[i]; + temp = bcm_div(node->sum_avg[bucket] * bcm->aux_data.width, + node->buswidth * node->channels); agg_avg[bucket] = max(agg_avg[bucket], temp); - temp = bcm->nodes[i]->max_peak[bucket] * bcm->aux_data.width; - do_div(temp, bcm->nodes[i]->buswidth); + temp = bcm_div(node->max_peak[bucket] * bcm->aux_data.width, + node->buswidth); agg_peak[bucket] = max(agg_peak[bucket], temp); } temp = agg_avg[bucket] * 1000ULL; - do_div(temp, bcm->aux_data.unit); - bcm->vote_x[bucket] = temp; + bcm->vote_x[bucket] = bcm_div(temp, bcm->aux_data.unit); temp = agg_peak[bucket] * 1000ULL; - do_div(temp, bcm->aux_data.unit); - bcm->vote_y[bucket] = temp; + bcm->vote_y[bucket] = bcm_div(temp, bcm->aux_data.unit); } if (bcm->keepalive && bcm->vote_x[QCOM_ICC_BUCKET_AMC] == 0 && |