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df844fd46b
Use a tracepoint to log various skb accounting points to help in debugging refcounting errors. Signed-off-by: David Howells <dhowells@redhat.com>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* AF_RXRPC tracepoints
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*
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* Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM rxrpc
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#if !defined(_TRACE_RXRPC_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_RXRPC_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(rxrpc_skb,
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TP_PROTO(struct sk_buff *skb, int op, int usage, int mod_count,
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const void *where),
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TP_ARGS(skb, op, usage, mod_count, where),
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TP_STRUCT__entry(
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__field(struct sk_buff *, skb )
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__field(int, op )
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__field(int, usage )
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__field(int, mod_count )
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__field(const void *, where )
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),
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TP_fast_assign(
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__entry->skb = skb;
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__entry->op = op;
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__entry->usage = usage;
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__entry->mod_count = mod_count;
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__entry->where = where;
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),
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TP_printk("s=%p %s u=%d m=%d p=%pSR",
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__entry->skb,
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(__entry->op == 0 ? "NEW" :
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__entry->op == 1 ? "SEE" :
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__entry->op == 2 ? "GET" :
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__entry->op == 3 ? "FRE" :
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"PUR"),
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__entry->usage,
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__entry->mod_count,
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__entry->where)
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);
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#endif /* _TRACE_RXRPC_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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