Commit a14832ff authored Jun 07, 2009 by Ingo Molnar

perf report: Print more expressive message in case of file open error



Before:

 $ perf report
 failed to open file: No such file or directory

After:

 $ perf report
  failed to open file: perf.data  (try 'perf record' first)

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 30c806a0

tools/perf/builtin-report.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -1120,7 +1120,10 @@ static int __cmd_report(void)

		input = open(input_name, O_RDONLY);
		if (input < 0) {
		perror("failed to open file");
		fprintf(stderr, " failed to open file: %s", input_name);
		if (!strcmp(input_name, "perf.data"))
		fprintf(stderr, " (try 'perf record' first)");
		fprintf(stderr, "\n");
		exit(-1);
		}