softlockup: show irqtrace

This patch adds some information about when interrupts were last
enabled and disabled to the output of the softlockup detector.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Johannes Weiner <hannes@saeurebad.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index f2bf5decb108d31f9fa1d56450d50e013a90adce..97977ecc317164ab866dcb8f48495499d03892f7 100644 (file)
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -13,6 +13,7 @@
 #include <linux/delay.h>
 #include <linux/freezer.h>
 #include <linux/kthread.h>
+#include <linux/lockdep.h>
 #include <linux/notifier.h>
 #include <linux/module.h>
 
@@ -144,6 +145,7 @@ void softlockup_tick(void)
                        this_cpu, now - touch_timestamp,
                        current->comm, task_pid_nr(current));
        print_modules();
+       print_irqtrace_events(current);
        if (regs)
                show_regs(regs);
        else