netdev - [net-next 5/8] net/mlx5: Add trace points for flow tables create/destroy

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Date:   Fri, 25 Jan 2019 12:18:15 -0800
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Or Gerlitz <ogerlitz@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 5/8] net/mlx5: Add trace points for flow tables create/destroy

From: Or Gerlitz <ogerlitz@...lanox.com>

We were not tracking flow tables so far, add it up.

Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
 .../mellanox/mlx5/core/diag/fs_tracepoint.c   |  2 ++
 .../mellanox/mlx5/core/diag/fs_tracepoint.h   | 35 +++++++++++++++++++
 .../net/ethernet/mellanox/mlx5/core/fs_core.c |  2 ++
 3 files changed, 39 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
index 424457ff9759..8ecac81a385d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
@@ -258,6 +258,8 @@ const char *parse_fs_dst(struct trace_seq *p,
 	return ret;
 }
 
+EXPORT_TRACEPOINT_SYMBOL(mlx5_fs_add_ft);
+EXPORT_TRACEPOINT_SYMBOL(mlx5_fs_del_ft);
 EXPORT_TRACEPOINT_SYMBOL(mlx5_fs_add_fg);
 EXPORT_TRACEPOINT_SYMBOL(mlx5_fs_del_fg);
 EXPORT_TRACEPOINT_SYMBOL(mlx5_fs_set_fte);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.h b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.h
index d027ce00c8ce..a4cf123e3f17 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.h
@@ -61,6 +61,41 @@ const char *parse_fs_dst(struct trace_seq *p,
 			 const struct mlx5_flow_destination *dst,
 			 u32 counter_id);
 
+TRACE_EVENT(mlx5_fs_add_ft,
+	    TP_PROTO(const struct mlx5_flow_table *ft),
+	    TP_ARGS(ft),
+	    TP_STRUCT__entry(
+		__field(const struct mlx5_flow_table *, ft)
+		__field(u32, id)
+		__field(u32, level)
+		__field(u32, type)
+	    ),
+	    TP_fast_assign(
+			   __entry->ft = ft;
+			   __entry->id = ft->id;
+			   __entry->level = ft->level;
+			   __entry->type = ft->type;
+	    ),
+	    TP_printk("ft=%p id=%u level=%u type=%u \n",
+		      __entry->ft, __entry->id, __entry->level, __entry->type)
+	    );
+
+TRACE_EVENT(mlx5_fs_del_ft,
+	    TP_PROTO(const struct mlx5_flow_table *ft),
+	    TP_ARGS(ft),
+	    TP_STRUCT__entry(
+		__field(const struct mlx5_flow_table *, ft)
+		__field(u32, id)
+	    ),
+	    TP_fast_assign(
+			   __entry->ft = ft;
+			   __entry->id = ft->id;
+
+	    ),
+	    TP_printk("ft=%p id=%u\n",
+		      __entry->ft, __entry->id)
+	    );
+
 TRACE_EVENT(mlx5_fs_add_fg,
 	    TP_PROTO(const struct mlx5_flow_group *fg),
 	    TP_ARGS(fg),
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index 79f122b45def..b2df7c3749fb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -397,6 +397,7 @@ static void del_hw_flow_table(struct fs_node *node)
 	fs_get_obj(ft, node);
 	dev = get_dev(&ft->node);
 	root = find_root(&ft->node);
+	trace_mlx5_fs_del_ft(ft);
 
 	if (node->active) {
 		err = root->cmds->destroy_flow_table(dev, ft);
@@ -1019,6 +1020,7 @@ static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespa
 	fs_prio->num_ft++;
 	up_write_ref_node(&fs_prio->node);
 	mutex_unlock(&root->chain_lock);
+	trace_mlx5_fs_add_ft(ft);
 	return ft;
 destroy_ft:
 	root->cmds->destroy_flow_table(root->dev, ft);
-- 
2.20.1