@@ -20,6 +20,8 @@
#include "internal.h"
+#define ICC_DYN_ID_START 10000
+
#define CREATE_TRACE_POINTS
#include "trace.h"
@@ -826,7 +828,12 @@ static struct icc_node *icc_node_create_nolock(int id)
if (!node)
return ERR_PTR(-ENOMEM);
- id = idr_alloc(&icc_idr, node, id, id + 1, GFP_KERNEL);
+ /* dynamic id allocation */
+ if (id == ALLOC_DYN_ID)
+ id = idr_alloc(&icc_idr, node, ICC_DYN_ID_START, 0, GFP_KERNEL);
+ else
+ id = idr_alloc(&icc_idr, node, id, id + 1, GFP_KERNEL);
+
if (id < 0) {
WARN(1, "%s: couldn't get idr\n", __func__);
kfree(node);
@@ -962,6 +969,10 @@ void icc_node_add(struct icc_node *node, struct icc_provider *provider)
node->avg_bw = node->init_avg;
node->peak_bw = node->init_peak;
+ if (node->id >= ICC_DYN_ID_START)
+ node->name = devm_kasprintf(provider->dev, GFP_KERNEL, "%s@%s",
+ node->name, dev_name(provider->dev));
+
if (node->avg_bw || node->peak_bw) {
if (provider->pre_aggregate)
provider->pre_aggregate(node);
@@ -20,6 +20,9 @@
#define Mbps_to_icc(x) ((x) * 1000 / 8)
#define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8)
+/* macro to indicate dynamic id allocation */
+#define ALLOC_DYN_ID -1
+
struct icc_path;
struct device;
The current interconnect framework relies on static IDs for node creation and registration, which limits topologies with multiple instances of the same interconnect provider. To address this, update the interconnect framework APIs icc_node_create() and icc_link_create() APIs to dynamically allocate IDs for interconnect nodes during creation. This change removes the dependency on static IDs, allowing multiple instances of the same hardware, such as EPSS L3. Signed-off-by: Raviteja Laggyshetty <quic_rlaggysh@quicinc.com> --- drivers/interconnect/core.c | 13 ++++++++++++- include/linux/interconnect.h | 3 +++ 2 files changed, 15 insertions(+), 1 deletion(-)