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net: qrtr: Make qrtr rx threads as RT priorities

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To support high priority clients like sensor use cases in all system
conditions elevating the router reader threads to RT priorities based
on configuration.

Change-Id: I6f46097f6678f2e00c3ec8872b208d773c377224
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: Chris Lew <quic_clew@quicinc.com>
This commit is contained in:
Chris Lew 2022-10-11 13:39:22 -07:00
parent 188c64d260
commit 43c9f45b6a
5 changed files with 20 additions and 8 deletions
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8
net/qrtr/af_qrtr.c
View File

@ -15,6 +15,7 @@
#include <linux/uidgid.h>
#include <net/sock.h>
#include <uapi/linux/sched/types.h>
#include "qrtr.h"
@ -807,13 +808,16 @@ static void qrtr_node_rx_work(struct kthread_work *work)
* qrtr_endpoint_register() - register a new endpoint
* @ep: endpoint to register
* @nid: desired node id; may be QRTR_EP_NID_AUTO for auto-assignment
* @rt: flag to notify real time low latency endpoint
* Return: 0 on success; negative error code on failure
*
* The specified endpoint must have the xmit function pointer set on call.
*/
int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int net_id)
int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int net_id,
bool rt)
{
struct qrtr_node *node;
struct sched_param param = {.sched_priority = 1};
if (!ep || !ep->xmit)
return -EINVAL;
@ -836,6 +840,8 @@ int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int net_id)
kfree(node);
return -ENOMEM;
}
if (rt)
sched_setscheduler(node->task, SCHED_FIFO, &param);
INIT_RADIX_TREE(&node->qrtr_tx_flow, GFP_KERNEL);
mutex_init(&node->qrtr_tx_lock);

8
net/qrtr/mhi.c
View File

@ -82,7 +82,7 @@ static int qcom_mhi_qrtr_send(struct qrtr_endpoint *ep, struct sk_buff *skb)
}
static void qrtr_mhi_of_parse(struct mhi_device *mhi_dev,
u32 *net_id)
u32 *net_id, bool *rt)
{
struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;
struct device_node *np = NULL;
@ -103,6 +103,7 @@ static void qrtr_mhi_of_parse(struct mhi_device *mhi_dev,
rc = of_property_read_u32(np, "qcom,net-id", &nid);
if (!rc)
*net_id = nid;
*rt = of_property_read_bool(np, "qcom,low-latency");
}
}
of_node_put(np);
@ -113,6 +114,7 @@ static int qcom_mhi_qrtr_probe(struct mhi_device *mhi_dev,
{
struct qrtr_mhi_dev *qdev;
u32 net_id;
bool rt;
int rc;
qdev = devm_kzalloc(&mhi_dev->dev, sizeof(*qdev), GFP_KERNEL);
@ -126,9 +128,9 @@ static int qcom_mhi_qrtr_probe(struct mhi_device *mhi_dev,
dev_set_drvdata(&mhi_dev->dev, qdev);
qrtr_mhi_of_parse(mhi_dev, &net_id);
qrtr_mhi_of_parse(mhi_dev, &net_id, &rt);
rc = qrtr_endpoint_register(&qdev->ep, net_id);
rc = qrtr_endpoint_register(&qdev->ep, net_id, rt);
if (rc)
return rc;

3
net/qrtr/qrtr.h
View File

@ -24,7 +24,8 @@ struct qrtr_endpoint {
struct qrtr_node *node;
};
int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int net_id);
int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int net_id,
bool rt);
void qrtr_endpoint_unregister(struct qrtr_endpoint *ep);

7
net/qrtr/smd.c
View File

@ -64,6 +64,7 @@ static int qcom_smd_qrtr_probe(struct rpmsg_device *rpdev)
{
struct qrtr_smd_dev *qdev;
u32 net_id;
bool rt;
int rc;
qdev = devm_kzalloc(&rpdev->dev, sizeof(*qdev), GFP_KERNEL);
@ -78,9 +79,11 @@ static int qcom_smd_qrtr_probe(struct rpmsg_device *rpdev)
if (rc < 0)
net_id = QRTR_EP_NET_ID_AUTO;
rc = qrtr_endpoint_register(&qdev->ep, net_id);
rt = of_property_read_bool(rpdev->dev.of_node, "qcom,low-latency");
rc = qrtr_endpoint_register(&qdev->ep, net_id, rt);
if (rc) {
dev_err(qdev->dev, "endpoint register failed: %d\n", rc);
dev_err(qdev->dev, "endpoint register failed: %d\n", rc, rt);
return rc;
}

2
net/qrtr/tun.c
View File

@ -44,7 +44,7 @@ static int qrtr_tun_open(struct inode *inode, struct file *filp)
filp->private_data = tun;
ret = qrtr_endpoint_register(&tun->ep, QRTR_EP_NET_ID_AUTO);
ret = qrtr_endpoint_register(&tun->ep, QRTR_EP_NET_ID_AUTO, 0);
if (ret)
goto out;