Commit-ID: 3e9c3a56674b5e87031c9d462ec2c6156efe442b
Gitweb: https://git.kernel.org/tip/3e9c3a56674b5e87031c9d462ec2c6156efe442b
Author: Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Wed, 5 Dec 2018 13:08:11 -0300
Committer: Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Thu, 6 Dec 2018 14:12:32 -0300
perf trace: We need to consider "nr" if "__syscall_nr" is not there
To cope with older kernels that don't have this patch backported:
026842d148b9 ("tracing/syscalls: Rename "/format" tracepoint field name "nr"
to "__syscall_nr:")
This makes 'perf trace' work again in RHEL7 kernels.
Cc: Taeung Song <[email protected]>
Cc: Adrian Hunter <[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]>
---
tools/perf/builtin-trace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 2a347ed7bdf4..98aff12af9e6 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -258,7 +258,8 @@ static int perf_evsel__init_syscall_tp(struct perf_evsel
*evsel)
struct syscall_tp *sc = evsel->priv = malloc(sizeof(struct syscall_tp));
if (evsel->priv != NULL) {
- if (perf_evsel__init_tp_uint_field(evsel, &sc->id,
"__syscall_nr"))
+ if (perf_evsel__init_tp_uint_field(evsel, &sc->id,
"__syscall_nr") &&
+ perf_evsel__init_tp_uint_field(evsel, &sc->id, "nr"))
goto out_delete;
return 0;
}
