diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-trace.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 26a337f939d8..8dc98c598b1a 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1725,8 +1725,12 @@ static int trace__read_syscall_info(struct trace *trace, int id) sc->args = sc->tp_format->format.fields; sc->nr_args = sc->tp_format->format.nr_fields; - /* drop nr field - not relevant here; does not exist on older kernels */ - if (sc->args && strcmp(sc->args->name, "nr") == 0) { + /* + * We need to check and discard the first variable '__syscall_nr' + * or 'nr' that mean the syscall number. It is needless here. + * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels. + */ + if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) { sc->args = sc->args->next; --sc->nr_args; } |