path: root/scripts/bootgraph.pl
diff options
authorStephen Hemminger <shemminger@vyatta.com>2008-11-13 08:33:00 -0800
committerIngo Molnar <mingo@elte.hu>2008-11-13 19:58:22 +0100
commitd1aaf8cf8afe70a8c2235a565885291fe290c57c (patch)
tree027bbef67998a8f7e3a519d66a62a45a6526b354 /scripts/bootgraph.pl
parent24de38620dd3504782c90c0892eef888d0c351e9 (diff)
tracing/fastboot: put error message on stderr
Since this scripts output is usually redirected, put error messages on standard error and exit with error code if no data is found. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'scripts/bootgraph.pl')
1 files changed, 7 insertions, 5 deletions
diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
index a8635a10fef2..f0af9aa9b243 100644
--- a/scripts/bootgraph.pl
+++ b/scripts/bootgraph.pl
@@ -78,11 +78,13 @@ while (<>) {
if ($count == 0) {
- print "No data found in the dmesg. Make sure that 'printk.time=1' and\n";
- print "'initcall_debug' are passed on the kernel command line.\n\n";
- print "Usage: \n";
- print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n";
- exit;
+ print STDERR <<END;
+No data found in the dmesg. Make sure that 'printk.time=1' and
+'initcall_debug' are passed on the kernel command line.
+ dmesg | perl scripts/bootgraph.pl > output.svg
+ exit 1;
print "<?xml version=\"1.0\" standalone=\"no\"?> \n";

Privacy Policy