mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-02-07 03:35:16 +07:00
4055ae5e6d
The issue comes when there are multiple threads attempting to use the mailbox facility at the same time. When DCB operations and interface up/down is run in a loop for every 0.1 sec, we observed mailbox collisions. And out of the two commands one would fail with the present code, since we don't queue the second command. To overcome the above issue, added a queue to access the mailbox. Whenever a mailbox command is issued add it to the queue. If its at the head issue the mailbox command, else wait for the existing command to complete. Usually command takes less than a milli-second to complete. Also timeout from the loop, if the command under execution takes long time to run. In reality, the number of mailbox access collisions is going to be very rare since no one runs such abusive script. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|---|---|---|
| .. | ||
| cxgb | ||
| cxgb3 | ||
| cxgb4 | ||
| cxgb4vf | ||
| libcxgb | ||
| Kconfig | ||
| Makefile | ||