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mhi: device: netdev: Add flag to track napi scheduling

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Flag is set to true when napi_schedule is called and false
when napi_complete is called. This helps to identify the
status of napi if a data stall is reported on downlink.

Change-Id: Id54340c0274da3120f21154c0774e035a61347a9
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
This commit is contained in:
Hemant Kumar 2020-01-09 14:36:05 -08:00 • committed by Gerrit - the friendly Code Review server
commit 5cfb42acc8
1 changed files with 8 additions and 1 deletions
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9
drivers/bus/mhi/devices/mhi_netdev.c
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@ -111,6 +111,7 @@ struct mhi_netdev {
/* debug stats */
u32 abuffers, kbuffers, rbuffers;
bool napi_scheduled;
};
struct mhi_netdev_priv {
@ -449,6 +450,7 @@ static int mhi_netdev_alloc_thread(void *data)
/* replenish the ring */
napi_schedule(mhi_netdev->napi);
mhi_netdev->napi_scheduled = true;
/* wait for buffers to run low or thread to stop */
wait_event_interruptible(mhi_netdev->alloc_event,
@ -488,6 +490,7 @@ static int mhi_netdev_poll(struct napi_struct *napi, int budget)
if (rx_work < 0) {
MSG_ERR("Error polling ret:%d\n", rx_work);
napi_complete(napi);
mhi_netdev->napi_scheduled = false;
return 0;
}
@ -498,8 +501,10 @@ static int mhi_netdev_poll(struct napi_struct *napi, int budget)
mhi_netdev_queue(mhi_netdev, rsc_dev->mhi_dev);
/* complete work if # of packet processed less than allocated budget */
if (rx_work < budget)
if (rx_work < budget) {
napi_complete(napi);
mhi_netdev->napi_scheduled = false;
}
MSG_VERB("polled %d pkts\n", rx_work);
@ -835,6 +840,7 @@ static void mhi_netdev_status_cb(struct mhi_device *mhi_dev, enum MHI_CB mhi_cb)
return;
napi_schedule(mhi_netdev->napi);
mhi_netdev->napi_scheduled = true;
}
#ifdef CONFIG_DEBUG_FS
@ -1098,6 +1104,7 @@ static int mhi_netdev_probe(struct mhi_device *mhi_dev,
* by triggering a napi_poll
*/
napi_schedule(mhi_netdev->napi);
mhi_netdev->napi_scheduled = true;
return 0;
}