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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-10-26 19:23:25 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-10-30 17:46:23 +0300
commit476c92cacf383c83584ba02d06c88cf18f062afb (patch)
treebf86a1ad63f1496b0e427f26b775f50d52d1a880 /tools
parentf932184e282f574cfd34afee917a10b782fd3e76 (diff)
downloadlinux-476c92cacf383c83584ba02d06c88cf18f062afb.tar.xz
perf trace: Beautify the umount's 'name' argument
By using the SCA_FILENAME beautifier, that works when either the probe:vfs_getname probe is in place or with the eBPF program tools/perf/examples/bpf/augmented_syscalls.c: # perf probe -l probe:vfs_getname (on getname_flags:73@acme/git/linux/fs/namei.c with pathname) # perf trace -e umount 9630.332 ( 9.521 ms): umount/8082 umount2(name: /mnt) = 0 # The augmented syscalls one will be done in the next patch. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Benjamin Peterson <benjamin@python.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-hegbzlpd2nrn584l5jxn7sy2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-trace.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index db8711061ca3..d286f73ef2e5 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -838,7 +838,8 @@ static struct syscall_fmt {
.arg = { [2] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
{ .name = "tkill",
.arg = { [1] = { .scnprintf = SCA_SIGNUM, /* sig */ }, }, },
- { .name = "umount2", .alias = "umount", },
+ { .name = "umount2", .alias = "umount",
+ .arg = { [0] = { .scnprintf = SCA_FILENAME, /* name */ }, }, },
{ .name = "uname", .alias = "newuname", },
{ .name = "unlinkat",
.arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ }, }, },