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interconnect: Aggregate bandwidth votes for unused nodes in sync_state()

Message ID 1624122509-17508-1-git-send-email-okukatla@codeaurora.org
State New
Headers show
Series interconnect: Aggregate bandwidth votes for unused nodes in sync_state() | expand

Commit Message

Odelu Kukatla June 19, 2021, 5:08 p.m. UTC
When removing the initial bandwidth votes in sync_state(), make sure
to call the aggregate() function for nodes which don't have any
clients yet. aggregate_requests() does not invoke aggregate()
for unused nodes.

Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>
---
 drivers/interconnect/core.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

Comments

Matthias Kaehlcke June 21, 2021, 4:33 p.m. UTC | #1
On Sat, Jun 19, 2021 at 10:38:29PM +0530, Odelu Kukatla wrote:
> When removing the initial bandwidth votes in sync_state(), make sure
> to call the aggregate() function for nodes which don't have any
> clients yet. aggregate_requests() does not invoke aggregate()
> for unused nodes.
> 
> Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>

It seems this should have a 'Fixes' tag for b1d681d8d324 ("interconnect:
Add sync state support")', to make sure the change makes it into the
stable trees.

> ---
>  drivers/interconnect/core.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
> index 8a1e70e..1d9a00a 100644
> --- a/drivers/interconnect/core.c
> +++ b/drivers/interconnect/core.c
> @@ -1106,7 +1106,16 @@ void icc_sync_state(struct device *dev)
>  		dev_dbg(p->dev, "interconnect provider is in synced state\n");
>  		list_for_each_entry(n, &p->nodes, node_list) {
>  			if (n->init_avg || n->init_peak) {
> -				aggregate_requests(n);
> +				if (hlist_empty(&n->req_list)) {

nit: consider handling the common case in the 'if' branch and the exception of
the initial votes in 'else'.

> +					if (p->pre_aggregate)
> +						p->pre_aggregate(n);
> +
> +					p->aggregate(n, 0, 0, 0, &n->avg_bw,
> +						&n->peak_bw);
> +				} else {
> +					aggregate_requests(n);
> +				}
> +
>  				p->set(n, n);
>  			}
>  		}
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Patch

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index 8a1e70e..1d9a00a 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -1106,7 +1106,16 @@  void icc_sync_state(struct device *dev)
 		dev_dbg(p->dev, "interconnect provider is in synced state\n");
 		list_for_each_entry(n, &p->nodes, node_list) {
 			if (n->init_avg || n->init_peak) {
-				aggregate_requests(n);
+				if (hlist_empty(&n->req_list)) {
+					if (p->pre_aggregate)
+						p->pre_aggregate(n);
+
+					p->aggregate(n, 0, 0, 0, &n->avg_bw,
+						&n->peak_bw);
+				} else {
+					aggregate_requests(n);
+				}
+
 				p->set(n, n);
 			}
 		}