#include <linux/sysrq.h>
#include <linux/kbd_kern.h>
#include <linux/proc_fs.h>
+#include <linux/nmi.h>
#include <linux/quotaops.h>
#include <linux/perf_counter.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/vt_kern.h>
#include <linux/workqueue.h>
-#include <linux/kexec.h>
#include <linux/hrtimer.h>
#include <linux/oom.h>
static void sysrq_handle_crash(int key, struct tty_struct *tty)
{
char *killer = NULL;
+
+ panic_on_oops = 1; /* force panic */
+ wmb();
*killer = 1;
}
-static struct sysrq_key_op sysrq_crashdump_op = {
+static struct sysrq_key_op sysrq_crash_op = {
.handler = sysrq_handle_crash,
.help_msg = "Crash",
.action_msg = "Trigger a crash",
static void sysrq_handle_showallcpus(int key, struct tty_struct *tty)
{
- struct pt_regs *regs = get_irq_regs();
- if (regs) {
- printk(KERN_INFO "CPU%d:\n", smp_processor_id());
- show_regs(regs);
+ /*
+ * Fall back to the workqueue based printing if the
+ * backtrace printing did not succeed or the
+ * architecture has no support for it:
+ */
+ if (!trigger_all_cpu_backtrace()) {
+ struct pt_regs *regs = get_irq_regs();
+
+ if (regs) {
+ printk(KERN_INFO "CPU%d:\n", smp_processor_id());
+ show_regs(regs);
+ }
+ schedule_work(&sysrq_showallcpus);
}
- schedule_work(&sysrq_showallcpus);
}
static struct sysrq_key_op sysrq_showallcpus_op = {
*/
NULL, /* a */
&sysrq_reboot_op, /* b */
- &sysrq_crashdump_op, /* c & ibm_emac driver debug */
+ &sysrq_crash_op, /* c & ibm_emac driver debug */
&sysrq_showlocks_op, /* d */
&sysrq_term_op, /* e */
&sysrq_moom_op, /* f */