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authorDave Jones <davej@redhat.com>2012-12-17 16:04:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 17:15:27 -0800
commit2bf1cbf1c616b4dd85a3a8a715af9c5701c16a91 (patch)
treed42dd56db8607b3a35cd8727c7f6838753c0a262 /tools/testing/selftests/kcmp/kcmp_test.c
parentbreakpoint selftests: print failure status instead of cause make error (diff)
downloadlinux-dev-2bf1cbf1c616b4dd85a3a8a715af9c5701c16a91.tar.xz
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tools/testing/selftests/kcmp/kcmp_test.c: print reason for failure in kcmp_test
I was curious why sys_kcmp wasn't working, which led me to the testcase. It turned out I hadn't enabled CHECKPOINT_RESTORE in the kernel I was testing. Add a decoding of errno to the testcase to make that obvious. Signed-off-by: Dave Jones <davej@redhat.com> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/kcmp/kcmp_test.c')
-rw-r--r--tools/testing/selftests/kcmp/kcmp_test.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/testing/selftests/kcmp/kcmp_test.c b/tools/testing/selftests/kcmp/kcmp_test.c
index 358cc6bfa35d..fa4f1b37e045 100644
--- a/tools/testing/selftests/kcmp/kcmp_test.c
+++ b/tools/testing/selftests/kcmp/kcmp_test.c
@@ -72,7 +72,8 @@ int main(int argc, char **argv)
/* This one should return same fd */
ret = sys_kcmp(pid1, pid2, KCMP_FILE, fd1, fd1);
if (ret) {
- printf("FAIL: 0 expected but %d returned\n", ret);
+ printf("FAIL: 0 expected but %d returned (%s)\n",
+ ret, strerror(errno));
ret = -1;
} else
printf("PASS: 0 returned as expected\n");
@@ -80,7 +81,8 @@ int main(int argc, char **argv)
/* Compare with self */
ret = sys_kcmp(pid1, pid1, KCMP_VM, 0, 0);
if (ret) {
- printf("FAIL: 0 expected but %li returned\n", ret);
+ printf("FAIL: 0 expected but %li returned (%s)\n",
+ ret, strerror(errno));
ret = -1;
} else
printf("PASS: 0 returned as expected\n");