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-rw-r--r--scripts/bootgraph.pl12
1 files changed, 7 insertions, 5 deletions
diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
index a8635a10fef..f0af9aa9b24 100644
--- a/scripts/bootgraph.pl
+++ b/scripts/bootgraph.pl
@@ -78,11 +78,13 @@ while (<>) {
78} 78}
79 79
80if ($count == 0) { 80if ($count == 0) {
81 print "No data found in the dmesg. Make sure that 'printk.time=1' and\n"; 81 print STDERR <<END;
82 print "'initcall_debug' are passed on the kernel command line.\n\n"; 82No data found in the dmesg. Make sure that 'printk.time=1' and
83 print "Usage: \n"; 83'initcall_debug' are passed on the kernel command line.
84 print " dmesg | perl scripts/bootgraph.pl > output.svg\n\n"; 84Usage:
85 exit; 85 dmesg | perl scripts/bootgraph.pl > output.svg
86END
87 exit 1;
86} 88}
87 89
88print "<?xml version=\"1.0\" standalone=\"no\"?> \n"; 90print "<?xml version=\"1.0\" standalone=\"no\"?> \n";