bootchart: ask for --rel when failed to initialize graph start time

[elogind.git] / src / bootchart / bootchart.c

diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c
index fc00b4e3f2df888fa1fcf27ffeff770d29f0375d..5683025b1970df3f16da846326f70c2713c68fb8 100644 (file)
--- a/src/bootchart/bootchart.c
+++ b/src/bootchart/bootchart.c
@@ -350,6 +350,14 @@ int main(int argc, char *argv[]) {
 
         log_uptime();
 
+        if (graph_start < 0.0) {
+                fprintf(stderr,
+                        "Failed to setup graph start time.\n\nThe system uptime "
+                        "probably includes time that the system was suspended. "
+                        "Use --rel to bypass this issue.\n");
+                exit (EXIT_FAILURE);
+        }
+
         has_procfs = access("/proc/vmstat", F_OK) == 0;
 
         LIST_HEAD_INIT(head);