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-rw-r--r--Documentation/trace/kprobetrace.txt33
1 files changed, 17 insertions, 16 deletions
diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt
index 47aabeebbdf6..c3eff6ff945f 100644
--- a/Documentation/trace/kprobetrace.txt
+++ b/Documentation/trace/kprobetrace.txt
@@ -97,23 +97,24 @@ recording return value as "myretprobe" event.
97 97
98 cat /sys/kernel/debug/tracing/events/kprobes/myprobe/format 98 cat /sys/kernel/debug/tracing/events/kprobes/myprobe/format
99name: myprobe 99name: myprobe
100ID: 75 100ID: 780
101format: 101format:
102 field:unsigned short common_type; offset:0; size:2; 102 field:unsigned short common_type; offset:0; size:2; signed:0;
103 field:unsigned char common_flags; offset:2; size:1; 103 field:unsigned char common_flags; offset:2; size:1; signed:0;
104 field:unsigned char common_preempt_count; offset:3; size:1; 104 field:unsigned char common_preempt_count; offset:3; size:1;signed:0;
105 field:int common_pid; offset:4; size:4; 105 field:int common_pid; offset:4; size:4; signed:1;
106 field:int common_tgid; offset:8; size:4; 106 field:int common_lock_depth; offset:8; size:4; signed:1;
107 107
108 field: unsigned long ip; offset:16;tsize:8; 108 field:unsigned long __probe_ip; offset:12; size:4; signed:0;
109 field: int nargs; offset:24;tsize:4; 109 field:int __probe_nargs; offset:16; size:4; signed:1;
110 field: unsigned long dfd; offset:32;tsize:8; 110 field:unsigned long dfd; offset:20; size:4; signed:0;
111 field: unsigned long filename; offset:40;tsize:8; 111 field:unsigned long filename; offset:24; size:4; signed:0;
112 field: unsigned long flags; offset:48;tsize:8; 112 field:unsigned long flags; offset:28; size:4; signed:0;
113 field: unsigned long mode; offset:56;tsize:8; 113 field:unsigned long mode; offset:32; size:4; signed:0;
114 114
115print fmt: "(%lx) dfd=%lx filename=%lx flags=%lx mode=%lx", REC->ip, REC->dfd, REC->filename, REC->flags, REC->mode 115
116 116print fmt: "(%lx) dfd=%lx filename=%lx flags=%lx mode=%lx", REC->__probe_ip,
117REC->dfd, REC->filename, REC->flags, REC->mode
117 118
118 You can see that the event has 4 arguments as in the expressions you specified. 119 You can see that the event has 4 arguments as in the expressions you specified.
119 120