The Linux Kernel Tracepoint API

Table of Contents

1. Introduction

2. IRQ

trace_irq_handler_entry — called immediately before the irq action handler

trace_irq_handler_exit — called immediately after the irq action handler returns

trace_softirq_entry — called immediately before the softirq handler

trace_softirq_exit — called immediately after the softirq handler returns

trace_softirq_raise — called immediately when a softirq is raised

3. SIGNAL

trace_signal_generate — called when a signal is generated

trace_signal_deliver — called when a signal is delivered

trace_signal_overflow_fail — called when signal queue is overflow

trace_signal_lose_info — called when siginfo is lost

4. Block IO

trace_block_rq_abort — abort block operation request

trace_block_rq_requeue — place block IO request back on a queue

trace_block_rq_complete — block IO operation completed by device driver

trace_block_rq_insert — insert block operation request into queue

trace_block_rq_issue — issue pending block IO request operation to device driver

trace_block_bio_bounce — used bounce buffer when processing block operation

trace_block_bio_complete — completed all work on the block operation

trace_block_bio_backmerge — merging block operation to the end of an existing operation

trace_block_bio_frontmerge — merging block operation to the beginning of an existing operation

trace_block_bio_queue — putting new block IO operation in queue

trace_block_getrq — get a free request entry in queue for block IO operations

trace_block_sleeprq — waiting to get a free request entry in queue for block IO operation

trace_block_plug — keep operations requests in request queue

trace_block_unplug — release of operations requests in request queue

trace_block_split — split a single bio struct into two bio structs

trace_block_bio_remap — map request for a logical device to the raw device

trace_block_rq_remap — map request for a block operation request

5. Workqueue

trace_workqueue_queue_work — called when a work gets queued

trace_workqueue_activate_work — called when a work gets activated

trace_workqueue_execute_start — called immediately before the workqueue callback

trace_workqueue_execute_end — called immediately before the workqueue callback