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From: Mike Tipton <mdtipton@codeaurora.org>
To: djakov@kernel.org
Cc: bjorn.andersson@linaro.org, agross@kernel.org,
	saravanak@google.com, okukatla@codeaurora.org,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org,
	Mike Tipton <mdtipton@codeaurora.org>
Subject: [PATCH v2 4/4] interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate
Date: Wed, 21 Jul 2021 10:54:32 -0700	[thread overview]
Message-ID: <20210721175432.2119-5-mdtipton@codeaurora.org> (raw)
In-Reply-To: <20210721175432.2119-1-mdtipton@codeaurora.org>

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.

Fixes: 976daac4a1c5 ("interconnect: qcom: Consolidate interconnect RPMh support")
Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>
---
 drivers/interconnect/qcom/icc-rpmh.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c
index f118f57eae37..b26fda0588e0 100644
--- 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_node *node)
 {
 	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 *node, u32 tag, u32 avg_bw,
 {
 	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 *node, u32 tag, u32 avg_bw,
 	*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);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


  parent reply	other threads:[~2021-07-21 17:55 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21 17:54 [PATCH v2 0/4] interconnect: Fix sync-state issues Mike Tipton
2021-07-21 17:54 ` [PATCH v2 1/4] interconnect: Zero initial BW after sync-state Mike Tipton
2021-07-21 17:54 ` [PATCH v2 2/4] interconnect: Always call pre_aggregate before aggregate Mike Tipton
2021-07-21 17:54 ` [PATCH v2 3/4] interconnect: qcom: icc-rpmh: Ensure floor BW is enforced for all nodes Mike Tipton
2021-07-21 17:54 ` Mike Tipton [this message]
2021-08-10 23:31   ` [PATCH v2 4/4] interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate Stephen Boyd
2021-08-11  0:18     ` Bjorn Andersson
2021-08-11  4:22       ` Stephen Boyd
2021-08-18  4:43       ` Mike Tipton
2021-08-11 16:01     ` Alex Elder
2021-08-11 18:13       ` Stephen Boyd
2021-08-18  4:43         ` Mike Tipton

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