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Add three tracepoints to the AFS filesystem:
(1) The afs_recv_data tracepoint logs data segments that are extracted
from the data received from the peer through afs_extract_data().
(2) The afs_notify_call tracepoint logs notification from AF_RXRPC of data
coming in to an asynchronous call.
(3) The afs_cb_call tracepoint logs incoming calls that have had their
operation ID extracted and mapped into a supported cache manager
service call.
To make (3) work, the name strings in the afs_call_type struct objects have
to be annotated with __tracepoint_string. This is done with the CM_NAME()
macro.
Further, the AFS call state enum needs a name so that it can be used to
declare parameter types.
Signed-off-by: David Howells <dhowells@redhat.com>- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| /* AFS 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 afs | ||
|
|
||
| #if !defined(_TRACE_AFS_H) || defined(TRACE_HEADER_MULTI_READ) | ||
| #define _TRACE_AFS_H | ||
|
|
||
| #include <linux/tracepoint.h> | ||
|
|
||
| TRACE_EVENT(afs_recv_data, | ||
| TP_PROTO(struct afs_call *call, unsigned count, unsigned offset, | ||
| bool want_more, int ret), | ||
|
|
||
| TP_ARGS(call, count, offset, want_more, ret), | ||
|
|
||
| TP_STRUCT__entry( | ||
| __field(struct rxrpc_call *, rxcall ) | ||
| __field(struct afs_call *, call ) | ||
| __field(enum afs_call_state, state ) | ||
| __field(unsigned int, count ) | ||
| __field(unsigned int, offset ) | ||
| __field(unsigned short, unmarshall ) | ||
| __field(bool, want_more ) | ||
| __field(int, ret ) | ||
| ), | ||
|
|
||
| TP_fast_assign( | ||
| __entry->rxcall = call->rxcall; | ||
| __entry->call = call; | ||
| __entry->state = call->state; | ||
| __entry->unmarshall = call->unmarshall; | ||
| __entry->count = count; | ||
| __entry->offset = offset; | ||
| __entry->want_more = want_more; | ||
| __entry->ret = ret; | ||
| ), | ||
|
|
||
| TP_printk("c=%p ac=%p s=%u u=%u %u/%u wm=%u ret=%d", | ||
| __entry->rxcall, | ||
| __entry->call, | ||
| __entry->state, __entry->unmarshall, | ||
| __entry->offset, __entry->count, | ||
| __entry->want_more, __entry->ret) | ||
| ); | ||
|
|
||
| TRACE_EVENT(afs_notify_call, | ||
| TP_PROTO(struct rxrpc_call *rxcall, struct afs_call *call), | ||
|
|
||
| TP_ARGS(rxcall, call), | ||
|
|
||
| TP_STRUCT__entry( | ||
| __field(struct rxrpc_call *, rxcall ) | ||
| __field(struct afs_call *, call ) | ||
| __field(enum afs_call_state, state ) | ||
| __field(unsigned short, unmarshall ) | ||
| ), | ||
|
|
||
| TP_fast_assign( | ||
| __entry->rxcall = rxcall; | ||
| __entry->call = call; | ||
| __entry->state = call->state; | ||
| __entry->unmarshall = call->unmarshall; | ||
| ), | ||
|
|
||
| TP_printk("c=%p ac=%p s=%u u=%u", | ||
| __entry->rxcall, | ||
| __entry->call, | ||
| __entry->state, __entry->unmarshall) | ||
| ); | ||
|
|
||
| TRACE_EVENT(afs_cb_call, | ||
| TP_PROTO(struct afs_call *call), | ||
|
|
||
| TP_ARGS(call), | ||
|
|
||
| TP_STRUCT__entry( | ||
| __field(struct rxrpc_call *, rxcall ) | ||
| __field(struct afs_call *, call ) | ||
| __field(const char *, name ) | ||
| __field(u32, op ) | ||
| ), | ||
|
|
||
| TP_fast_assign( | ||
| __entry->rxcall = call->rxcall; | ||
| __entry->call = call; | ||
| __entry->name = call->type->name; | ||
| __entry->op = call->operation_ID; | ||
| ), | ||
|
|
||
| TP_printk("c=%p ac=%p %s o=%u", | ||
| __entry->rxcall, | ||
| __entry->call, | ||
| __entry->name, | ||
| __entry->op) | ||
| ); | ||
|
|
||
| #endif /* _TRACE_AFS_H */ | ||
|
|
||
| /* This part must be outside protection */ | ||
| #include <trace/define_trace.h> |