[PATCH 3/4] perf_counter: tool: handle 0-length data files

[Peter Zijlstra]

Avoid perf-report barfing on 0-length data files.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
---
 Documentation/perf_counter/perf-report.cc |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux-2.6/Documentation/perf_counter/perf-report.cc
===================================================================
--- linux-2.6.orig/Documentation/perf_counter/perf-report.cc
+++ linux-2.6/Documentation/perf_counter/perf-report.cc
@@ -402,6 +402,11 @@ int main(int argc, char *argv[])
 		exit(-1);
 	}
 
+	if (!stat.st_size) {
+		fprintf(stderr, "zero-sized file, nothing to do!\n");
+		exit(0);
+	}
+
 	load_kallsyms();
 
 remap:

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