d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

bus/vmbus: use SMP memory barrier for signaling read

Browse Source 
rte_smp_mb() uses the same locked ADD as the in-kernel vmbus driver,
and it has slightly performance improvement over rte_mb().

Signed-off-by: Long Li <longli@microsoft.com>
This commit is contained in:
Long Li 2020-07-17 13:18:29 -07:00 committed by Thomas Monjalon
parent 25d5c40f25
commit 52c9a533b4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/bus/vmbus/vmbus_channel.c
View File

@ -214,7 +214,7 @@ void rte_vmbus_chan_signal_read(struct vmbus_channel *chan, uint32_t bytes_read)
return;
/* Make sure reading of pending happens after new read index */
rte_mb();
rte_smp_mb();
pending_sz = rbr->vbr->pending_send;
if (!pending_sz)