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f033b688c1
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>
23 lines
553 B
C
23 lines
553 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_NET_XDP_PRIV_H__
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#define __LINUX_NET_XDP_PRIV_H__
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#include <linux/rhashtable.h>
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/* Private to net/core/xdp.c, but used by trace/events/xdp.h */
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struct xdp_mem_allocator {
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struct xdp_mem_info mem;
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union {
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void *allocator;
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struct page_pool *page_pool;
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struct zero_copy_allocator *zc_alloc;
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};
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int disconnect_cnt;
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unsigned long defer_start;
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struct rhash_head node;
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struct rcu_head rcu;
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struct delayed_work defer_wq;
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unsigned long defer_warn;
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};
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#endif /* __LINUX_NET_XDP_PRIV_H__ */
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