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348b59012e
This helps in more control over debugging. root@qemu-img-64:~# ls /pass/123 ls: cannot access /pass/123: No such file or directory root@qemu-img-64:~# cat /sys/kernel/debug/tracing/trace # tracer: nop # # TASK-PID CPU# TIMESTAMP FUNCTION # | | | | | ls-1536 [001] 70.928584: 9p_protocol_dump: clnt 18446612132784021504 P9_TWALK(tag = 1) 000: 16 00 00 00 6e 01 00 01 00 00 00 02 00 00 00 01 010: 00 03 00 31 32 33 00 00 00 ff ff ff ff 00 00 00 ls-1536 [001] 70.928587: <stack trace> => trace_9p_protocol_dump => p9pdu_finalize => p9_client_rpc => p9_client_walk => v9fs_vfs_lookup => d_alloc_and_lookup => walk_component => path_lookupat ls-1536 [000] 70.929696: 9p_protocol_dump: clnt 18446612132784021504 P9_RLERROR(tag = 1) 000: 0b 00 00 00 07 01 00 02 00 00 00 4e 03 00 02 00 010: 00 00 00 00 03 00 02 00 00 00 00 00 ff 43 00 00 ls-1536 [000] 70.929697: <stack trace> => trace_9p_protocol_dump => p9_client_rpc => p9_client_walk => v9fs_vfs_lookup => d_alloc_and_lookup => walk_component => path_lookupat => do_path_lookup Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
177 lines
5.5 KiB
C
177 lines
5.5 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM 9p
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#if !defined(_TRACE_9P_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_9P_H
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#include <linux/tracepoint.h>
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#define show_9p_op(type) \
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__print_symbolic(type, \
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{ P9_TLERROR, "P9_TLERROR" }, \
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{ P9_RLERROR, "P9_RLERROR" }, \
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{ P9_TSTATFS, "P9_TSTATFS" }, \
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{ P9_RSTATFS, "P9_RSTATFS" }, \
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{ P9_TLOPEN, "P9_TLOPEN" }, \
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{ P9_RLOPEN, "P9_RLOPEN" }, \
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{ P9_TLCREATE, "P9_TLCREATE" }, \
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{ P9_RLCREATE, "P9_RLCREATE" }, \
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{ P9_TSYMLINK, "P9_TSYMLINK" }, \
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{ P9_RSYMLINK, "P9_RSYMLINK" }, \
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{ P9_TMKNOD, "P9_TMKNOD" }, \
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{ P9_RMKNOD, "P9_RMKNOD" }, \
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{ P9_TRENAME, "P9_TRENAME" }, \
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{ P9_RRENAME, "P9_RRENAME" }, \
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{ P9_TREADLINK, "P9_TREADLINK" }, \
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{ P9_RREADLINK, "P9_RREADLINK" }, \
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{ P9_TGETATTR, "P9_TGETATTR" }, \
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{ P9_RGETATTR, "P9_RGETATTR" }, \
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{ P9_TSETATTR, "P9_TSETATTR" }, \
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{ P9_RSETATTR, "P9_RSETATTR" }, \
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{ P9_TXATTRWALK, "P9_TXATTRWALK" }, \
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{ P9_RXATTRWALK, "P9_RXATTRWALK" }, \
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{ P9_TXATTRCREATE, "P9_TXATTRCREATE" }, \
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{ P9_RXATTRCREATE, "P9_RXATTRCREATE" }, \
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{ P9_TREADDIR, "P9_TREADDIR" }, \
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{ P9_RREADDIR, "P9_RREADDIR" }, \
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{ P9_TFSYNC, "P9_TFSYNC" }, \
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{ P9_RFSYNC, "P9_RFSYNC" }, \
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{ P9_TLOCK, "P9_TLOCK" }, \
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{ P9_RLOCK, "P9_RLOCK" }, \
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{ P9_TGETLOCK, "P9_TGETLOCK" }, \
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{ P9_RGETLOCK, "P9_RGETLOCK" }, \
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{ P9_TLINK, "P9_TLINK" }, \
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{ P9_RLINK, "P9_RLINK" }, \
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{ P9_TMKDIR, "P9_TMKDIR" }, \
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{ P9_RMKDIR, "P9_RMKDIR" }, \
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{ P9_TRENAMEAT, "P9_TRENAMEAT" }, \
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{ P9_RRENAMEAT, "P9_RRENAMEAT" }, \
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{ P9_TUNLINKAT, "P9_TUNLINKAT" }, \
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{ P9_RUNLINKAT, "P9_RUNLINKAT" }, \
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{ P9_TVERSION, "P9_TVERSION" }, \
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{ P9_RVERSION, "P9_RVERSION" }, \
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{ P9_TAUTH, "P9_TAUTH" }, \
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{ P9_RAUTH, "P9_RAUTH" }, \
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{ P9_TATTACH, "P9_TATTACH" }, \
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{ P9_RATTACH, "P9_RATTACH" }, \
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{ P9_TERROR, "P9_TERROR" }, \
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{ P9_RERROR, "P9_RERROR" }, \
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{ P9_TFLUSH, "P9_TFLUSH" }, \
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{ P9_RFLUSH, "P9_RFLUSH" }, \
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{ P9_TWALK, "P9_TWALK" }, \
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{ P9_RWALK, "P9_RWALK" }, \
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{ P9_TOPEN, "P9_TOPEN" }, \
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{ P9_ROPEN, "P9_ROPEN" }, \
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{ P9_TCREATE, "P9_TCREATE" }, \
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{ P9_RCREATE, "P9_RCREATE" }, \
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{ P9_TREAD, "P9_TREAD" }, \
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{ P9_RREAD, "P9_RREAD" }, \
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{ P9_TWRITE, "P9_TWRITE" }, \
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{ P9_RWRITE, "P9_RWRITE" }, \
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{ P9_TCLUNK, "P9_TCLUNK" }, \
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{ P9_RCLUNK, "P9_RCLUNK" }, \
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{ P9_TREMOVE, "P9_TREMOVE" }, \
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{ P9_RREMOVE, "P9_RREMOVE" }, \
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{ P9_TSTAT, "P9_TSTAT" }, \
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{ P9_RSTAT, "P9_RSTAT" }, \
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{ P9_TWSTAT, "P9_TWSTAT" }, \
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{ P9_RWSTAT, "P9_RWSTAT" })
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TRACE_EVENT(9p_client_req,
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TP_PROTO(struct p9_client *clnt, int8_t type, int tag),
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TP_ARGS(clnt, type, tag),
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TP_STRUCT__entry(
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__field( void *, clnt )
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__field( __u8, type )
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__field( __u32, tag )
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),
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TP_fast_assign(
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__entry->clnt = clnt;
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__entry->type = type;
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__entry->tag = tag;
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),
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TP_printk("client %lu request %s tag %d",
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(long)__entry->clnt, show_9p_op(__entry->type),
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__entry->tag)
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);
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TRACE_EVENT(9p_client_res,
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TP_PROTO(struct p9_client *clnt, int8_t type, int tag, int err),
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TP_ARGS(clnt, type, tag, err),
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TP_STRUCT__entry(
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__field( void *, clnt )
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__field( __u8, type )
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__field( __u32, tag )
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__field( __u32, err )
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),
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TP_fast_assign(
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__entry->clnt = clnt;
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__entry->type = type;
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__entry->tag = tag;
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__entry->err = err;
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),
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TP_printk("client %lu response %s tag %d err %d",
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(long)__entry->clnt, show_9p_op(__entry->type),
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__entry->tag, __entry->err)
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);
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/* dump 32 bytes of protocol data */
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#define P9_PROTO_DUMP_SZ 32
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TRACE_EVENT(9p_protocol_dump,
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TP_PROTO(struct p9_client *clnt, struct p9_fcall *pdu),
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TP_ARGS(clnt, pdu),
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TP_STRUCT__entry(
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__field( void *, clnt )
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__field( __u8, type )
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__field( __u16, tag )
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__array( unsigned char, line, P9_PROTO_DUMP_SZ )
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),
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TP_fast_assign(
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__entry->clnt = clnt;
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__entry->type = pdu->id;
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__entry->tag = pdu->tag;
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memcpy(__entry->line, pdu->sdata, P9_PROTO_DUMP_SZ);
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),
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TP_printk("clnt %lu %s(tag = %d)\n%.3x: "
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"%02x %02x %02x %02x %02x %02x %02x %02x "
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"%02x %02x %02x %02x %02x %02x %02x %02x\n"
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"%.3x: "
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"%02x %02x %02x %02x %02x %02x %02x %02x "
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"%02x %02x %02x %02x %02x %02x %02x %02x\n",
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(long)__entry->clnt, show_9p_op(__entry->type),
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__entry->tag, 0,
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__entry->line[0], __entry->line[1],
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__entry->line[2], __entry->line[3],
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__entry->line[4], __entry->line[5],
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__entry->line[6], __entry->line[7],
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__entry->line[8], __entry->line[9],
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__entry->line[10], __entry->line[11],
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__entry->line[12], __entry->line[13],
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__entry->line[14], __entry->line[15],
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16,
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__entry->line[16], __entry->line[17],
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__entry->line[18], __entry->line[19],
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__entry->line[20], __entry->line[21],
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__entry->line[22], __entry->line[23],
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__entry->line[24], __entry->line[25],
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__entry->line[26], __entry->line[27],
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__entry->line[28], __entry->line[29],
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__entry->line[30], __entry->line[31])
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);
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#endif /* _TRACE_9P_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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