diff options
| author |   David Howells <dhowells@redhat.com> | 2016-08-23 15:27:24 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2016-08-23 15:27:24 +0100 |
| commit | df844fd46b98c2efde8f4ac2d50d59bc90c4c679 (patch) | |
| tree | 0a067071fa1bf6fe2fc41de100d822e9585289a0 /include/trace | |
| parent | rxrpc: Drop channel number field from rxrpc_call struct (diff) | |
| download | linux-dev-df844fd46b98c2efde8f4ac2d50d59bc90c4c679.tar.xz linux-dev-df844fd46b98c2efde8f4ac2d50d59bc90c4c679.zip | |
rxrpc: Use a tracepoint for skb accounting debugging
Use a tracepoint to log various skb accounting points to help in debugging
refcounting errors.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/rxrpc.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h new file mode 100644 index 000000000000..15283ee3e41a --- /dev/null +++ b/include/trace/events/rxrpc.h @@ -0,0 +1,56 @@ +/* AF_RXRPC tracepoints + * + * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM rxrpc + +#if !defined(_TRACE_RXRPC_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_RXRPC_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(rxrpc_skb, + TP_PROTO(struct sk_buff *skb, int op, int usage, int mod_count, + const void *where), + + TP_ARGS(skb, op, usage, mod_count, where), + + TP_STRUCT__entry( + __field(struct sk_buff *, skb ) + __field(int, op ) + __field(int, usage ) + __field(int, mod_count ) + __field(const void *, where ) + ), + + TP_fast_assign( + __entry->skb = skb; + __entry->op = op; + __entry->usage = usage; + __entry->mod_count = mod_count; + __entry->where = where; + ), + + TP_printk("s=%p %s u=%d m=%d p=%pSR", + __entry->skb, + (__entry->op == 0 ? "NEW" : + __entry->op == 1 ? "SEE" : + __entry->op == 2 ? "GET" : + __entry->op == 3 ? "FRE" : + "PUR"), + __entry->usage, + __entry->mod_count, + __entry->where) + ); + +#endif /* _TRACE_RXRPC_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |