diff options
| author | Jesper Dangaard Brouer | 2019-06-18 15:05:58 +0200 |
|---|---|---|
| committer | David S. Miller | 2019-06-19 17:23:13 +0200 |
| commit | f033b688c1ede5ec78c9a718fa9f0b374049bc31 (patch) | |
| tree | 541546c9e967a1d4c6be385231980637149599be /include/net | |
| parent | xdp: force mem allocator removal and periodic warning (diff) | |
| download | kernel-qcow2-linux-f033b688c1ede5ec78c9a718fa9f0b374049bc31.tar.gz kernel-qcow2-linux-f033b688c1ede5ec78c9a718fa9f0b374049bc31.tar.xz kernel-qcow2-linux-f033b688c1ede5ec78c9a718fa9f0b374049bc31.zip | |
xdp: add tracepoints for XDP mem
These tracepoints make it easier to troubleshoot XDP mem id disconnect.
The xdp:mem_disconnect tracepoint cannot be replaced via kprobe. It is
placed at the last stable place for the pointer to struct xdp_mem_allocator,
just before it's scheduled for RCU removal. It also extract info on
'safe_to_remove' and 'force'.
Detailed info about in-flight pages is not available at this layer. The next
patch will added tracepoints needed at the page_pool layer for this.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/xdp_priv.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/net/xdp_priv.h b/include/net/xdp_priv.h new file mode 100644 index 000000000000..6a8cba6ea79a --- /dev/null +++ b/include/net/xdp_priv.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_NET_XDP_PRIV_H__ +#define __LINUX_NET_XDP_PRIV_H__ + +#include <linux/rhashtable.h> + +/* Private to net/core/xdp.c, but used by trace/events/xdp.h */ +struct xdp_mem_allocator { + struct xdp_mem_info mem; + union { + void *allocator; + struct page_pool *page_pool; + struct zero_copy_allocator *zc_alloc; + }; + int disconnect_cnt; + unsigned long defer_start; + struct rhash_head node; + struct rcu_head rcu; + struct delayed_work defer_wq; + unsigned long defer_warn; +}; + +#endif /* __LINUX_NET_XDP_PRIV_H__ */ |