diff options
Diffstat (limited to 'Documentation/trace/kprobetrace.txt')
| -rw-r--r-- | Documentation/trace/kprobetrace.txt | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt index aaa6c1067c78..a849889e6092 100644 --- a/Documentation/trace/kprobetrace.txt +++ b/Documentation/trace/kprobetrace.txt | |||
| @@ -114,7 +114,7 @@ format: | |||
| 114 | field: unsigned long flags; offset:48;tsize:8; | 114 | field: unsigned long flags; offset:48;tsize:8; |
| 115 | field: unsigned long mode; offset:56;tsize:8; | 115 | field: unsigned long mode; offset:56;tsize:8; |
| 116 | 116 | ||
| 117 | print fmt: "%lx: dfd=%lx filename=%lx flags=%lx mode=%lx", ip, REC->dfd, REC->filename, REC->flags, REC->mode | 117 | print fmt: "(%lx) dfd=%lx filename=%lx flags=%lx mode=%lx", REC->ip, REC->dfd, REC->filename, REC->flags, REC->mode |
| 118 | 118 | ||
| 119 | 119 | ||
| 120 | You can see that the event has 4 arguments as in the expressions you specified. | 120 | You can see that the event has 4 arguments as in the expressions you specified. |
| @@ -129,15 +129,15 @@ print fmt: "%lx: dfd=%lx filename=%lx flags=%lx mode=%lx", ip, REC->dfd, REC->fi | |||
| 129 | # | 129 | # |
| 130 | # TASK-PID CPU# TIMESTAMP FUNCTION | 130 | # TASK-PID CPU# TIMESTAMP FUNCTION |
| 131 | # | | | | | | 131 | # | | | | | |
| 132 | <...>-1447 [001] 1038282.286875: do_sys_open+0x0/0xd6: dfd=3 filename=7fffd1ec4440 flags=8000 mode=0 | 132 | <...>-1447 [001] 1038282.286875: myprobe: (do_sys_open+0x0/0xd6) dfd=3 filename=7fffd1ec4440 flags=8000 mode=0 |
| 133 | <...>-1447 [001] 1038282.286878: sys_openat+0xc/0xe <- do_sys_open: rv=fffffffffffffffe ra=ffffffff81367a3a | 133 | <...>-1447 [001] 1038282.286878: myretprobe: (sys_openat+0xc/0xe <- do_sys_open) rv=fffffffffffffffe ra=ffffffff81367a3a |
| 134 | <...>-1447 [001] 1038282.286885: do_sys_open+0x0/0xd6: dfd=ffffff9c filename=40413c flags=8000 mode=1b6 | 134 | <...>-1447 [001] 1038282.286885: myprobe: (do_sys_open+0x0/0xd6) dfd=ffffff9c filename=40413c flags=8000 mode=1b6 |
| 135 | <...>-1447 [001] 1038282.286915: sys_open+0x1b/0x1d <- do_sys_open: rv=3 ra=ffffffff81367a3a | 135 | <...>-1447 [001] 1038282.286915: myretprobe: (sys_open+0x1b/0x1d <- do_sys_open) rv=3 ra=ffffffff81367a3a |
| 136 | <...>-1447 [001] 1038282.286969: do_sys_open+0x0/0xd6: dfd=ffffff9c filename=4041c6 flags=98800 mode=10 | 136 | <...>-1447 [001] 1038282.286969: myprobe: (do_sys_open+0x0/0xd6) dfd=ffffff9c filename=4041c6 flags=98800 mode=10 |
| 137 | <...>-1447 [001] 1038282.286976: sys_open+0x1b/0x1d <- do_sys_open: rv=3 ra=ffffffff81367a3a | 137 | <...>-1447 [001] 1038282.286976: myretprobe: (sys_open+0x1b/0x1d <- do_sys_open) rv=3 ra=ffffffff81367a3a |
| 138 | 138 | ||
| 139 | 139 | ||
| 140 | Each line shows when the kernel hits a probe, and <- SYMBOL means kernel | 140 | Each line shows when the kernel hits an event, and <- SYMBOL means kernel |
| 141 | returns from SYMBOL(e.g. "sys_open+0x1b/0x1d <- do_sys_open" means kernel | 141 | returns from SYMBOL(e.g. "sys_open+0x1b/0x1d <- do_sys_open" means kernel |
| 142 | returns from do_sys_open to sys_open+0x1b). | 142 | returns from do_sys_open to sys_open+0x1b). |
| 143 | 143 | ||