- trans_timeout is incremented when tx queue timed out (tx watchdog).
- tx_maxrate is set via sysfs
Moving tx_maxrate to read-mostly part shrinks the struct by 64 bytes.
While at it, also move trans_timeout (it is out-of-place in the
'write-mostly' part).
Signed-off-by: Florian Westphal <f...@strlen.de>
---
include/linux/netdevice.h | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 52914a8..f218259 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -569,6 +569,12 @@ struct netdev_queue {
#if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
int numa_node;
#endif
+ unsigned long tx_maxrate;
+ /*
+ * Number of TX timeouts for this queue
+ * (/sys/class/net/DEV/Q/trans_timeout)
+ */
+ unsigned long trans_timeout;
/*
* write-mostly part
*/
@@ -579,18 +585,11 @@ struct netdev_queue {
*/
unsigned long trans_start;
- /*
- * Number of TX timeouts for this queue
- * (/sys/class/net/DEV/Q/trans_timeout)
- */
- unsigned long trans_timeout;
-
unsigned long state;
#ifdef CONFIG_BQL
struct dql dql;
#endif
- unsigned long tx_maxrate;
} ____cacheline_aligned_in_smp;
static inline int netdev_queue_numa_node_read(const struct netdev_queue *q)
--
2.7.3
