update_max_tr_single(tr, current, cpu);
- if (!runqueue_is_locked()) {
- if (tracing_thresh) {
- printk(KERN_INFO "(%16s-%-5d|#%d): %lu us critical"
- " section violates %lu us threshold.\n",
- current->comm, current->pid,
- raw_smp_processor_id(),
- latency, nsecs_to_usecs(tracing_thresh));
- } else {
- printk(KERN_INFO "(%16s-%-5d|#%d): new %lu us"
- " maximum-latency critical section.\n",
- current->comm, current->pid,
- raw_smp_processor_id(),
- latency);
- }
- }
-
max_sequence++;
out_unlock:
if (preempt_trace() || irq_trace())
start_critical_timing(CALLER_ADDR0, CALLER_ADDR1);
}
+EXPORT_SYMBOL_GPL(start_critical_timings);
void stop_critical_timings(void)
{
if (preempt_trace() || irq_trace())
stop_critical_timing(CALLER_ADDR0, CALLER_ADDR1);
}
+EXPORT_SYMBOL_GPL(stop_critical_timings);
#ifdef CONFIG_IRQSOFF_TRACER
#ifdef CONFIG_PROVE_LOCKING
#ifdef CONFIG_PREEMPT_TRACER
void trace_preempt_on(unsigned long a0, unsigned long a1)
{
- stop_critical_timing(a0, a1);
+ if (preempt_trace())
+ stop_critical_timing(a0, a1);
}
void trace_preempt_off(unsigned long a0, unsigned long a1)
{
- start_critical_timing(a0, a1);
+ if (preempt_trace())
+ start_critical_timing(a0, a1);
}
#endif /* CONFIG_PREEMPT_TRACER */