|
@@ -572,7 +572,6 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
|
|
|
return NOTIFY_STOP;
|
|
|
}
|
|
|
|
|
|
-#ifdef CONFIG_KGDB_LOW_LEVEL_TRAP
|
|
|
int kgdb_ll_trap(int cmd, const char *str,
|
|
|
struct pt_regs *regs, long err, int trap, int sig)
|
|
|
{
|
|
@@ -590,7 +589,6 @@ int kgdb_ll_trap(int cmd, const char *str,
|
|
|
|
|
|
return __kgdb_notify(&args, cmd);
|
|
|
}
|
|
|
-#endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
|
|
|
|
|
|
static int
|
|
|
kgdb_notify(struct notifier_block *self, unsigned long cmd, void *ptr)
|
|
@@ -625,6 +623,12 @@ int kgdb_arch_init(void)
|
|
|
return register_die_notifier(&kgdb_notifier);
|
|
|
}
|
|
|
|
|
|
+static void kgdb_hw_overflow_handler(struct perf_event *event, int nmi,
|
|
|
+ struct perf_sample_data *data, struct pt_regs *regs)
|
|
|
+{
|
|
|
+ kgdb_ll_trap(DIE_DEBUG, "debug", regs, 0, 0, SIGTRAP);
|
|
|
+}
|
|
|
+
|
|
|
void kgdb_arch_late(void)
|
|
|
{
|
|
|
int i, cpu;
|
|
@@ -655,6 +659,7 @@ void kgdb_arch_late(void)
|
|
|
for_each_online_cpu(cpu) {
|
|
|
pevent = per_cpu_ptr(breakinfo[i].pev, cpu);
|
|
|
pevent[0]->hw.sample_period = 1;
|
|
|
+ pevent[0]->overflow_handler = kgdb_hw_overflow_handler;
|
|
|
if (pevent[0]->destroy != NULL) {
|
|
|
pevent[0]->destroy = NULL;
|
|
|
release_bp_slot(*pevent);
|