This is a note to let you know that I've just added the patch titled
interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
interconnect-qcom-icc-rpmh-add-bcms-to-commit-list-in-pre_aggregate.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b95b668eaaa2574e8ee72f143c52075e9955177e Mon Sep 17 00:00:00 2001
From: Mike Tipton <mdtipton@xxxxxxxxxxxxxx>
Date: Thu, 25 Nov 2021 19:47:51 +0200
Subject: interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate
From: Mike Tipton <mdtipton@xxxxxxxxxxxxxx>
commit b95b668eaaa2574e8ee72f143c52075e9955177e upstream.
We're only adding BCMs to the commit list in aggregate(), but there are
cases where pre_aggregate() is called without subsequently calling
aggregate(). In particular, in icc_sync_state() when a node with initial
BW has zero requests. Since BCMs aren't added to the commit list in
these cases, we don't actually send the zero BW request to HW. So the
resources remain on unnecessarily.
Add BCMs to the commit list in pre_aggregate() instead, which is always
called even when there are no requests.
Signed-off-by: Mike Tipton <mdtipton@xxxxxxxxxxxxxx>
[georgi: remove icc_sync_state for platforms with incomplete support]
Link: https://lore.kernel.org/r/20211125174751.25317-1-djakov@xxxxxxxxxx
Signed-off-by: Georgi Djakov <djakov@xxxxxxxxxx>
[dianders: dropped sm8350.c which isn't present in 5.10]
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Acked-by: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/interconnect/qcom/icc-rpmh.c | 10 +++++-----
drivers/interconnect/qcom/sm8150.c | 1 -
drivers/interconnect/qcom/sm8250.c | 1 -
3 files changed, 5 insertions(+), 7 deletions(-)
--- a/drivers/interconnect/qcom/icc-rpmh.c
+++ b/drivers/interconnect/qcom/icc-rpmh.c
@@ -20,13 +20,18 @@ void qcom_icc_pre_aggregate(struct icc_n
{
size_t i;
struct qcom_icc_node *qn;
+ struct qcom_icc_provider *qp;
qn = node->data;
+ qp = to_qcom_provider(node->provider);
for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) {
qn->sum_avg[i] = 0;
qn->max_peak[i] = 0;
}
+
+ for (i = 0; i < qn->num_bcms; i++)
+ qcom_icc_bcm_voter_add(qp->voter, qn->bcms[i]);
}
EXPORT_SYMBOL_GPL(qcom_icc_pre_aggregate);
@@ -44,10 +49,8 @@ int qcom_icc_aggregate(struct icc_node *
{
size_t i;
struct qcom_icc_node *qn;
- struct qcom_icc_provider *qp;
qn = node->data;
- qp = to_qcom_provider(node->provider);
if (!tag)
tag = QCOM_ICC_TAG_ALWAYS;
@@ -67,9 +70,6 @@ int qcom_icc_aggregate(struct icc_node *
*agg_avg += avg_bw;
*agg_peak = max_t(u32, *agg_peak, peak_bw);
- for (i = 0; i < qn->num_bcms; i++)
- qcom_icc_bcm_voter_add(qp->voter, qn->bcms[i]);
-
return 0;
}
EXPORT_SYMBOL_GPL(qcom_icc_aggregate);
--- a/drivers/interconnect/qcom/sm8150.c
+++ b/drivers/interconnect/qcom/sm8150.c
@@ -627,7 +627,6 @@ static struct platform_driver qnoc_drive
.driver = {
.name = "qnoc-sm8150",
.of_match_table = qnoc_of_match,
- .sync_state = icc_sync_state,
},
};
module_platform_driver(qnoc_driver);
--- a/drivers/interconnect/qcom/sm8250.c
+++ b/drivers/interconnect/qcom/sm8250.c
@@ -643,7 +643,6 @@ static struct platform_driver qnoc_drive
.driver = {
.name = "qnoc-sm8250",
.of_match_table = qnoc_of_match,
- .sync_state = icc_sync_state,
},
};
module_platform_driver(qnoc_driver);
Patches currently in stable-queue which might be from mdtipton@xxxxxxxxxxxxxx are
queue-5.10/interconnect-qcom-icc-rpmh-add-bcms-to-commit-list-in-pre_aggregate.patch
