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| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-03-08 22:40:08 +0100 |
|---|---|---|
| committer | Georgi Djakov <djakov@kernel.org> | 2023-04-05 11:29:59 +0300 |
| commit | 02819953b33a4410e6aa4595a043c052408c90d3 (patch) | |
| tree | 25129641d38b111f692b675549aadd834f9367ca /drivers | |
| parent | 1d779317eb6529d89bfe6d7900a2cf9e03149aeb (diff) | |
| download | linux-02819953b33a4410e6aa4595a043c052408c90d3.tar.gz linux-02819953b33a4410e6aa4595a043c052408c90d3.tar.bz2 linux-02819953b33a4410e6aa4595a043c052408c90d3.zip | |
interconnect: qcom: rpm: Add support for specifying channel num
Some nodes, like EBI0 (DDR) or L3/LLCC, may be connected over more than
one channel. This should be taken into account in bandwidth calcualtion,
as we're supposed to feed msmbus with the per-channel bandwidth. Add
support for specifying that and use it during bandwidth aggregation.
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230228-topic-qos-v7-2-815606092fff@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.c | 7 | ||||
| -rw-r--r-- | drivers/interconnect/qcom/icc-rpm.h | 2 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c index 56f29e0f0174..5341fa169dbf 100644 --- a/drivers/interconnect/qcom/icc-rpm.c +++ b/drivers/interconnect/qcom/icc-rpm.c @@ -316,6 +316,7 @@ static void qcom_icc_bus_aggregate(struct icc_provider *provider, { struct icc_node *node; struct qcom_icc_node *qn; + u64 sum_avg[QCOM_ICC_NUM_BUCKETS]; int i; /* Initialise aggregate values */ @@ -333,7 +334,11 @@ static void qcom_icc_bus_aggregate(struct icc_provider *provider, list_for_each_entry(node, &provider->nodes, node_list) { qn = node->data; for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) { - agg_avg[i] += qn->sum_avg[i]; + if (qn->channels) + sum_avg[i] = div_u64(qn->sum_avg[i], qn->channels); + else + sum_avg[i] = qn->sum_avg[i]; + agg_avg[i] += sum_avg[i]; agg_peak[i] = max_t(u64, agg_peak[i], qn->max_peak[i]); } } diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index d54f76d8b3fd..12566014c179 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -66,6 +66,7 @@ struct qcom_icc_qos { * @id: a unique node identifier * @links: an array of nodes where we can go next while traversing * @num_links: the total number of @links + * @channels: number of channels at this node (e.g. DDR channels) * @buswidth: width of the interconnect between a node and the bus (bytes) * @sum_avg: current sum aggregate value of all avg bw requests * @max_peak: current max aggregate value of all peak bw requests @@ -78,6 +79,7 @@ struct qcom_icc_node { u16 id; const u16 *links; u16 num_links; + u16 channels; u16 buswidth; u64 sum_avg[QCOM_ICC_NUM_BUCKETS]; u64 max_peak[QCOM_ICC_NUM_BUCKETS]; |