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authorStephen Hemminger <shemminger@vyatta.com>2008-11-13 11:33:00 -0500
committerIngo Molnar <mingo@elte.hu>2008-11-13 13:58:22 -0500
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')
-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";