Commit-ID: 91b4eaea93f5be95f4477554399680a53aff2343
Gitweb: http://git.kernel.org/tip/91b4eaea93f5be95f4477554399680a53aff2343
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Sun, 5 Jul 2009 07:39:17 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Sun, 5 Jul 2009 10:30:21 +0200
perf report: Warn on callchain output request from non-callchain file
perf report segfaults while trying to handle callchains from a non
callchain data file.
Instead of a segfault, print a useful message to the user.
Reported-by: Jens Axboe <jens.axboe@xxxxxxxxxx>
Reported-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Anton Blanchard <anton@xxxxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
LKML-Reference: <1246772361-9960-1-git-send-email-fweisbec@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
tools/perf/builtin-report.c | 16 +++++++++++++---
1 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index fa937f5..9f9575a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1684,9 +1684,19 @@ static int __cmd_report(void)
sample_type = perf_header__sample_type();
- if (sort__has_parent && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
- fprintf(stderr, "selected --sort parent, but no callchain data\n");
- exit(-1);
+ if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
+ if (sort__has_parent) {
+ fprintf(stderr, "selected --sort parent, but no"
+ " callchain data. Did you call"
+ " perf record without -g?\n");
+ exit(-1);
+ }
+ if (callchain) {
+ fprintf(stderr, "selected -c but no callchain data."
+ " Did you call perf record without"
+ " -g?\n");
+ exit(-1);
+ }
}
if (load_kernel() < 0) {
--
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