perf header: Stop using die() calls when processing tracing data

The callers of this function (perf_event__process_tracing_data) already
handles a negative value return as error, so just use pr_err() to log
the problem and return -1 instead of panic'ing.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-eeeljnecpi0zi5s7ux1mzdv9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 12 insertions, 6 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index fccd69dbbbb9..e17a8fe9c4d7 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2921,16 +2921,22 @@ int perf_event__process_tracing_data(union perf_event *event,
                                  session->repipe);
         padding = PERF_ALIGN(size_read, sizeof(u64)) - size_read;
 
-        if (readn(session->fd, buf, padding) < 0)
-                die("reading input file");
+        if (readn(session->fd, buf, padding) < 0) {
+                pr_err("%s: reading input file", __func__);
+                return -1;
+        }
         if (session->repipe) {
                 int retw = write(STDOUT_FILENO, buf, padding);
-                if (retw <= 0 || retw != padding)
-                        die("repiping tracing data padding");
+                if (retw <= 0 || retw != padding) {
+                        pr_err("%s: repiping tracing data padding", __func__);
+                        return -1;
+                }
         }
 
-        if (size_read + padding != size)
-                die("tracing data size mismatch");
+        if (size_read + padding != size) {
+                pr_err("%s: tracing data size mismatch", __func__);
+                return -1;
+        }
 
         perf_evlist__prepare_tracepoint_events(session->evlist,
                                                session->pevent);