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b4776a341e
For certain special cases, RPC-related tracepoints record a -1 as the task ID or the client ID. It's ugly for a trace event to display 4 billion in these cases. To help keep SUNRPC tracepoints consistent, create a macro that defines the print format specifiers for tk_pid and cl_clid. At some point in the future we might try tk_pid with a wider range of values than 0..64K so this makes it easier to make that change. RPC tracepoints now look like this: <...>-1276 [009] 149.720358: rpc_clnt_new: client=00000005 peer=[192.168.2.55]:20049 program=nfs server=klimt.ib <...>-1342 [004] 149.921234: rpc_xdr_recvfrom: task:0000001a@00000005 head=[0xff1242d9ab6dc01c,144] page=0 tail=[(nil),0] len=144 <...>-1342 [004] 149.921235: xprt_release_cong: task:0000001a@00000005 snd_task:ffffffff cong=256 cwnd=16384 <...>-1342 [004] 149.921235: xprt_put_cong: task:0000001a@00000005 snd_task:ffffffff cong=0 cwnd=16384 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
18 lines
474 B
C
18 lines
474 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2021 Oracle and/or its affiliates.
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*
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* Common types and format specifiers for sunrpc.
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*/
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#if !defined(_TRACE_SUNRPC_BASE_H)
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#define _TRACE_SUNRPC_BASE_H
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#include <linux/tracepoint.h>
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#define SUNRPC_TRACE_PID_SPECIFIER "%08x"
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#define SUNRPC_TRACE_CLID_SPECIFIER "%08x"
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#define SUNRPC_TRACE_TASK_SPECIFIER \
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"task:" SUNRPC_TRACE_PID_SPECIFIER "@" SUNRPC_TRACE_CLID_SPECIFIER
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#endif /* _TRACE_SUNRPC_BASE_H */
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