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-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 */ }, }, },