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.\" -*- nroff -*-
.TH TAPSET::IRQ 3stap "" "IBM"
.SH NAME
tapset::irq \- Systemtap probes for IRQ, workqueue,etc
.\" macros
.de SAMPLE
.br
.RS
.nf
.nh
..
.de ESAMPLE
.hy
.fi
.RE
..
.SH DESCRIPTION
Probe points for probing irq handler execution, softirqs, workqueues,etc
.P
.TP
.B workqueue.create
probes creation of a new workqueue
.B Arguments:
.I wq_thread
task_struct of the workqueue thread.
.I cpu
cpu for which the worker thread is created.
.P
.TP
.B workqueue.insert
probes queuing of work on a workqueue.
.B Arguments:
.I wq_thread
task_struct of the workqueue thread.
.I work
work_struct* being executed.
.I work_func
pointer to handler func.
.P
.TP
.B workqueue.execute
probes execution of deferred work.
.B Arguments:
.I wq_thread
task_struct of the workqueue thread.
.I work
work_struct* being executed.
.I work_func
pointer to handler func.
.P
.TP
.B workqueue.destroy
probes destruction of each worker thread of each cpu for a workqueue.
.B Arguments:
.I wq_thread
task_struct of the workqueue thread.
.P
.TP
.B irq_handler.entry
Fires prior to execution of interrupt handler.
.B Arguments:
.I irq
irq number
.I action
struct irqaction* for this interrupt number
.I handler
interrupt handler function
.I flags
flags for this irq.
.I flags_str
A formatted string of flags.
.I dev_name
name of device
.I dev_id
cookie to identify device
.I next_irqaction
pointer to next irqaction for shared interrupts
.I dir
pointer to the /proc/irq/NN/name entry
.I thread_fn
interrupt handler function for threaded interrupts
.I thread
thread pointer for threaded interrupts
.I thread_flags
flags related to thread
.P
.TP
.B irq_handler.exit
Fires post execution of interrupt handler.
.B Arguments:
.I irq
irq number
.I action
struct irqaction* for this interrupt number
.I ret
return value from interrupt handler that just executed.
.I handler
interrupt handler function
.I flags
flags for this irq.
.I flags_str
A formatted string of flags.
.I dev_name
name of device
.I dev_id
cookie to identify device
.I next_irqaction
pointer to next irqaction for shared interrupts
.I dir
pointer to the /proc/irq/NN/name entry
.I thread_fn
interrupt handler function for threaded interrupts
.I thread
thread pointer for threaded interrupts
.I thread_flags
flags related to thread
.P
.TP
.B softirq.entry
triggered just before executing handler for a pending softirq
.B Arguments:
.I h
struct softirq* for current pending softirq.
.I vec
softirq_action vector
.I action
pointer to softirq handler just about to execute.
.P
.TP
.B softirq.exit
triggered just after executing handler for a pending softirq
.B Arguments:
.I h
struct softirq* for just executed softirq.
.I vec
softirq_action vector
.I action
pointer to softirq handler that just finished execution.
.SH SEE ALSO
.IR stap (1),
.IR stapprobes (3stap)
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