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authorVlad Buslov <vladbu@mellanox.com>2019-06-25 22:40:20 +0300
committerSaeed Mahameed <saeedm@mellanox.com>2019-08-22 01:55:18 +0300
commit5970882a2510e8bffaef518a82ea207798187a93 (patch)
treee15858334dae586ce697472ef1a7a3628da45332 /Documentation/networking
parentc786fe596bede275f887f212eebee74490043b84 (diff)
downloadlinux-5970882a2510e8bffaef518a82ea207798187a93.tar.xz
net/mlx5e: Add trace point for neigh update
Allow tracing neigh state during neigh update task that is executed on workqueue and is scheduled by neigh state change event. Usage example: ># cd /sys/kernel/debug/tracing ># echo mlx5:mlx5e_rep_neigh_update >> set_event ># cat trace ... kworker/u48:7-2221 [009] ...1 1475.387435: mlx5e_rep_neigh_update: netdev: ens1f0 MAC: 24:8a:07:9a:17:9a IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_connected=1 Added corresponding documentation in Documentation/networking/device-driver/mellanox/mlx5.rst Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Reviewed-by: Dmytro Linkin <dmitrolin@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/device_drivers/mellanox/mlx5.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/networking/device_drivers/mellanox/mlx5.rst b/Documentation/networking/device_drivers/mellanox/mlx5.rst
index b2f21ce9b090..b30a63dbf4b7 100644
--- a/Documentation/networking/device_drivers/mellanox/mlx5.rst
+++ b/Documentation/networking/device_drivers/mellanox/mlx5.rst
@@ -258,3 +258,10 @@ tc and eswitch offloads tracepoints:
$ cat /sys/kernel/debug/tracing/trace
...
kworker/u48:4-8806 [009] ...1 55117.882428: mlx5e_tc_update_neigh_used_value: netdev: ens1f0 IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_used=1
+
+- mlx5e_rep_neigh_update: trace neigh update tasks scheduled due to neigh state change events::
+
+ $ echo mlx5:mlx5e_rep_neigh_update >> /sys/kernel/debug/tracing/set_event
+ $ cat /sys/kernel/debug/tracing/trace
+ ...
+ kworker/u48:7-2221 [009] ...1 1475.387435: mlx5e_rep_neigh_update: netdev: ens1f0 MAC: 24:8a:07:9a:17:9a IPv4: 1.1.1.10 IPv6: ::ffff:1.1.1.10 neigh_connected=1