diff options
author | Arnaldo Carvalho de Melo <[email protected]> | 2018-10-26 13:51:45 -0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <[email protected]> | 2018-10-30 11:46:23 -0300 |
commit | 23c07a23cbed389d0b9c7a06486574621df8d1a4 (patch) | |
tree | 85eb99fe20da0cb46509b8c51b9dde872227bd5e | |
parent | 476c92cacf383c83584ba02d06c88cf18f062afb (diff) |
perf trace: Beautify mount's first pathname arg
The pathname beautifiers so far support just one augmented pathname per
syscall, so do it just for mount's first arg, later this will get fixed.
With:
# perf probe -l
probe:vfs_getname (on getname_flags:73@acme/git/linux/fs/namei.c with pathname)
#
Later this will get added to augmented_syscalls.c (eBPF):
In one xterm:
# perf trace -e mount,umount
2687.331 ( 3.544 ms): mount/8892 mount(dev_name: /mnt, dir_name: 0x561f9ac184a0, type: 0x561f9ac1b170, flags: BIND) = 0
3912.126 ( 8.807 ms): umount/8895 umount2(name: /mnt) = 0
^C#
In the other:
$ sudo mount --bind /proc /mnt
$ sudo umount /mnt
Cc: Adrian Hunter <[email protected]>
Cc: Benjamin Peterson <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
-rw-r--r-- | tools/perf/builtin-trace.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index d286f73ef2e5..dc8a6c4986ce 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -727,7 +727,8 @@ static struct syscall_fmt { [2] = { .scnprintf = SCA_MMAP_PROT, /* prot */ }, [3] = { .scnprintf = SCA_MMAP_FLAGS, /* flags */ }, }, }, { .name = "mount", - .arg = { [3] = { .scnprintf = SCA_MOUNT_FLAGS, /* flags */ + .arg = { [0] = { .scnprintf = SCA_FILENAME, /* dev_name */ }, + [3] = { .scnprintf = SCA_MOUNT_FLAGS, /* flags */ .mask_val = SCAMV_MOUNT_FLAGS, /* flags */ }, }, }, { .name = "mprotect", .arg = { [0] = { .scnprintf = SCA_HEX, /* start */ }, |