I should have added more context. I'm sure I recompiled the kernel correctly with CONFIG_IPIPE_TRACE Because, when I unplug my USB device i get the ipipe trace now instead of default kernel panic.
CONFIG_IPIPE_DEBUG=y CONFIG_IPIPE_DEBUG_CONTEXT=y CONFIG_IPIPE_DEBUG_INTERNAL=y CONFIG_IPIPE_TRACE=y CONFIG_IPIPE_TRACE_ENABLE=y CONFIG_IPIPE_TRACE_MCOUNT=y CONFIG_IPIPE_TRACE_IRQSOFF=y CONFIG_IPIPE_TRACE_SHIFT=14 CONFIG_IPIPE_TRACE_VMALLOC=y CONFIG_IPIPE_TRACE_PANIC=y Adding ipipe_trace_freeze to irq/handle.c:146 does not seem to trigger the trace. Even if I define it in the main code block (without if statement) this prints nothing. Could this be that a early printk is needed or some other similar ipipe respective routine? Is there another way of tracing the issue down? On 25 February 2014 20:20, Gilles Chanteperdrix < [email protected]> wrote: > On 02/25/2014 09:04 PM, Gregory Dymarek wrote: > > Thanks Gilles, > > > > Do you mean to execute ipipe_trace_freeze instead of the warning and > > kernel/irq/handle.c:146 > > ? > > Yes. > > > > > I've recompiled the kernel with the following code in handle.c:146 > > 13 irqreturn_t > > > > 12 handle_irq_event_percpu(struct irq_desc *desc, struct irqaction > > *action) > > 11 { > > > > 10 irqreturn_t retval = IRQ_NONE; > > > > 9 unsigned int flags = 0, irq = desc->irq_data.irq; > > > > 8 > > > > 7 do { > > > > 6 irqreturn_t res; > > > > 5 > > > > 4 trace_irq_handler_entry(irq, action); > > > > 3 res = action->handler(irq, action->dev_id); > > > > 2 trace_irq_handler_exit(irq, action, res); > > > > 1 > > > > 145 if (!irqs_disabled()) ipipe_trace_freeze(1); > > > > 1 > > > > 2 if (WARN_ONCE(!irqs_disabled(),"irq %u handler %pF enabled > > interrupts\n", > > 3 irq, action->handler)) > > > > 4 local_irq_disable(); > > > > > > But this does not trigger trace freeze. > > the tracer should be compiled-in and started, see: > http://www.xenomai.org/index.php/Xenomai:I-pipe_Tracer#API > > > > What is the 'unsigned int v' in the definition of ipipe_trace_freeze? > > It is a value you will find back in the trace. > > > -- > Gilles. > _______________________________________________ Xenomai mailing list [email protected] http://www.xenomai.org/mailman/listinfo/xenomai
