TAPSET::IRQ(3stap)														TAPSET::IRQ(3stap)

NAME

       tapset::irq - Systemtap probes for IRQ, workqueue,etc

DESCRIPTION

       Probe points for probing irq handler execution, softirqs, workqueues,etc

       workqueue.create
	      probes creation of a new workqueue

	      Arguments:

	      wq_thread
		 task_struct of the workqueue thread.

	      cpu
		 cpu for which the worker thread is created.

       workqueue.insert
	      probes queuing of work on a workqueue.

	      Arguments:

	      wq_thread
		 task_struct of the workqueue thread.

	      work
		 work_struct* being executed.

	      work_func
		 pointer to handler func.

       workqueue.execute
	      probes execution of deferred work.

	      Arguments:

	      wq_thread
		 task_struct of the workqueue thread.

	      work
		 work_struct* being executed.

	      work_func
		 pointer to handler func.

       workqueue.destroy
	      probes destruction of each worker thread of each cpu for a workqueue.

	      Arguments:

	      wq_thread
		task_struct of the workqueue thread.

       irq_handler.entry
	      Fires prior to execution of interrupt handler.

	      Arguments:

	      irq
		 irq number

	      action
		 struct irqaction* for this interrupt number

	      handler
		 interrupt handler function

	      flags
		 flags for this irq.

	      flags_str
		 A formatted string of flags.

	      dev_name
		 name of device

	      dev_id
		 cookie to identify device

	      next_irqaction
		 pointer to next irqaction for shared interrupts

	      dir
		 pointer to the /proc/irq/NN/name entry

	      thread_fn
		 interrupt handler function for threaded interrupts

	      thread
		 thread pointer for threaded interrupts

	      thread_flags
		 flags related to thread

       irq_handler.exit
	      Fires post execution of interrupt handler.

	      Arguments:

	      irq
		 irq number

	      action
		 struct irqaction* for this interrupt number

	      ret
		 return value from interrupt handler that just executed.

	      handler
		 interrupt handler function

	      flags
		 flags for this irq.

	      flags_str
		 A formatted string of flags.

	      dev_name
		 name of device

	      dev_id
		 cookie to identify device

	      next_irqaction
		 pointer to next irqaction for shared interrupts

	      dir
		 pointer to the /proc/irq/NN/name entry

	      thread_fn
		 interrupt handler function for threaded interrupts

	      thread
		 thread pointer for threaded interrupts

	      thread_flags
		 flags related to thread

       softirq.entry
	      triggered just before executing handler for a pending softirq

	      Arguments:

	      h
		 struct softirq* for current pending softirq.

	      vec
		 softirq_action vector

	      action
		 pointer to softirq handler just about to execute.

       softirq.exit
	      triggered just after executing handler for a pending softirq

	      Arguments:

	      h
		 struct softirq* for just executed softirq.

	      vec
		 softirq_action vector

	      action
		 pointer to softirq handler that just finished execution.

SEE ALSO

       stap(1), stapprobes(3stap)

IBM
																TAPSET::IRQ(3stap)