blob: 2aa7da85ea9eaec9b74d96fa8051883152521c4d [file] [log] [blame]
From 763be8c0a919015a3c1e205005176d4aacec22e3 Mon Sep 17 00:00:00 2001
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 28 Nov 2011 07:42:15 -0500
Subject: lttng instrumentation: tracepoint events
Modifications to the in-kernel TRACE_EVENT are needed to generate the
compact event descriptions and the probe code LTTng generates. These
changes could apply to upstream TRACE_EVENT, but requires changing the
in-kernel API.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
.../staging/lttng/instrumentation/events/README | 7 +
.../instrumentation/events/lttng-module/block.h | 626 ++++++++++++++++++++
.../instrumentation/events/lttng-module/irq.h | 155 +++++
.../instrumentation/events/lttng-module/kvm.h | 312 ++++++++++
.../instrumentation/events/lttng-module/lttng.h | 34 ++
.../instrumentation/events/lttng-module/sched.h | 400 +++++++++++++
.../instrumentation/events/lttng-module/syscalls.h | 76 +++
.../lttng/instrumentation/events/mainline/block.h | 569 ++++++++++++++++++
.../lttng/instrumentation/events/mainline/irq.h | 150 +++++
.../lttng/instrumentation/events/mainline/kvm.h | 312 ++++++++++
.../lttng/instrumentation/events/mainline/sched.h | 397 +++++++++++++
.../instrumentation/events/mainline/syscalls.h | 75 +++
12 files changed, 3113 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/lttng/instrumentation/events/README
create mode 100644 drivers/staging/lttng/instrumentation/events/lttng-module/block.h
create mode 100644 drivers/staging/lttng/instrumentation/events/lttng-module/irq.h
create mode 100644 drivers/staging/lttng/instrumentation/events/lttng-module/kvm.h
create mode 100644 drivers/staging/lttng/instrumentation/events/lttng-module/lttng.h
create mode 100644 drivers/staging/lttng/instrumentation/events/lttng-module/sched.h
create mode 100644 drivers/staging/lttng/instrumentation/events/lttng-module/syscalls.h
create mode 100644 drivers/staging/lttng/instrumentation/events/mainline/block.h
create mode 100644 drivers/staging/lttng/instrumentation/events/mainline/irq.h
create mode 100644 drivers/staging/lttng/instrumentation/events/mainline/kvm.h
create mode 100644 drivers/staging/lttng/instrumentation/events/mainline/sched.h
create mode 100644 drivers/staging/lttng/instrumentation/events/mainline/syscalls.h
diff --git a/drivers/staging/lttng/instrumentation/events/README b/drivers/staging/lttng/instrumentation/events/README
new file mode 100644
index 0000000..dad2cbb
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/README
@@ -0,0 +1,7 @@
+The workflow for updating patches from newer kernel:
+
+Diff mainline/ and lttng-module/ directories.
+
+Pull the new headers from mainline kernel to mainline/.
+Copy them into lttng-modules.
+Apply diff. Fix conflicts.
diff --git a/drivers/staging/lttng/instrumentation/events/lttng-module/block.h b/drivers/staging/lttng/instrumentation/events/lttng-module/block.h
new file mode 100644
index 0000000..42184f3
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/lttng-module/block.h
@@ -0,0 +1,626 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM block
+
+#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_BLOCK_H
+
+#include <linux/blktrace_api.h>
+#include <linux/blkdev.h>
+#include <linux/tracepoint.h>
+#include <linux/trace_seq.h>
+
+#ifndef _TRACE_BLOCK_DEF_
+#define _TRACE_BLOCK_DEF_
+
+#define __blk_dump_cmd(cmd, len) "<unknown>"
+
+enum {
+ RWBS_FLAG_WRITE = (1 << 0),
+ RWBS_FLAG_DISCARD = (1 << 1),
+ RWBS_FLAG_READ = (1 << 2),
+ RWBS_FLAG_RAHEAD = (1 << 3),
+ RWBS_FLAG_SYNC = (1 << 4),
+ RWBS_FLAG_META = (1 << 5),
+ RWBS_FLAG_SECURE = (1 << 6),
+};
+
+#endif /* _TRACE_BLOCK_DEF_ */
+
+#define __print_rwbs_flags(rwbs) \
+ __print_flags(rwbs, "", \
+ { RWBS_FLAG_WRITE, "W" }, \
+ { RWBS_FLAG_DISCARD, "D" }, \
+ { RWBS_FLAG_READ, "R" }, \
+ { RWBS_FLAG_RAHEAD, "A" }, \
+ { RWBS_FLAG_SYNC, "S" }, \
+ { RWBS_FLAG_META, "M" }, \
+ { RWBS_FLAG_SECURE, "E" })
+
+#define blk_fill_rwbs(rwbs, rw, bytes) \
+ tp_assign(rwbs, ((rw) & WRITE ? RWBS_FLAG_WRITE : \
+ ( (rw) & REQ_DISCARD ? RWBS_FLAG_DISCARD : \
+ ( (bytes) ? RWBS_FLAG_READ : \
+ ( 0 )))) \
+ | ((rw) & REQ_RAHEAD ? RWBS_FLAG_RAHEAD : 0) \
+ | ((rw) & REQ_SYNC ? RWBS_FLAG_SYNC : 0) \
+ | ((rw) & REQ_META ? RWBS_FLAG_META : 0) \
+ | ((rw) & REQ_SECURE ? RWBS_FLAG_SECURE : 0))
+
+DECLARE_EVENT_CLASS(block_rq_with_error,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( int, errors )
+ __field( unsigned int, rwbs )
+ __dynamic_array_hex( unsigned char, cmd,
+ (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ rq->cmd_len : 0)
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
+ tp_assign(sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_pos(rq))
+ tp_assign(nr_sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_sectors(rq))
+ tp_assign(errors, rq->errors)
+ blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
+ tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ rq->cmd : NULL);
+ ),
+
+ TP_printk("%d,%d %s (%s) %llu + %u [%d]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ __blk_dump_cmd(__get_dynamic_array(cmd),
+ __get_dynamic_array_len(cmd)),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->errors)
+)
+
+/**
+ * block_rq_abort - abort block operation request
+ * @q: queue containing the block operation request
+ * @rq: block IO operation request
+ *
+ * Called immediately after pending block IO operation request @rq in
+ * queue @q is aborted. The fields in the operation request @rq
+ * can be examined to determine which device and sectors the pending
+ * operation would access.
+ */
+DEFINE_EVENT(block_rq_with_error, block_rq_abort,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+)
+
+/**
+ * block_rq_requeue - place block IO request back on a queue
+ * @q: queue holding operation
+ * @rq: block IO operation request
+ *
+ * The block operation request @rq is being placed back into queue
+ * @q. For some reason the request was not completed and needs to be
+ * put back in the queue.
+ */
+DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+)
+
+/**
+ * block_rq_complete - block IO operation completed by device driver
+ * @q: queue containing the block operation request
+ * @rq: block operations request
+ *
+ * The block_rq_complete tracepoint event indicates that some portion
+ * of operation request has been completed by the device driver. If
+ * the @rq->bio is %NULL, then there is absolutely no additional work to
+ * do for the request. If @rq->bio is non-NULL then there is
+ * additional work required to complete the request.
+ */
+DEFINE_EVENT(block_rq_with_error, block_rq_complete,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+)
+
+DECLARE_EVENT_CLASS(block_rq,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( unsigned int, bytes )
+ __field( unsigned int, rwbs )
+ __array_text( char, comm, TASK_COMM_LEN )
+ __dynamic_array_hex( unsigned char, cmd,
+ (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ rq->cmd_len : 0)
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
+ tp_assign(sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_pos(rq))
+ tp_assign(nr_sector, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_sectors(rq))
+ tp_assign(bytes, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_bytes(rq) : 0)
+ blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
+ tp_memcpy_dyn(cmd, (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ rq->cmd : NULL);
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ __entry->bytes,
+ __blk_dump_cmd(__get_dynamic_array(cmd),
+ __get_dynamic_array_len(cmd)),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+)
+
+/**
+ * block_rq_insert - insert block operation request into queue
+ * @q: target queue
+ * @rq: block IO operation request
+ *
+ * Called immediately before block operation request @rq is inserted
+ * into queue @q. The fields in the operation request @rq struct can
+ * be examined to determine which device and sectors the pending
+ * operation would access.
+ */
+DEFINE_EVENT(block_rq, block_rq_insert,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+)
+
+/**
+ * block_rq_issue - issue pending block IO request operation to device driver
+ * @q: queue holding operation
+ * @rq: block IO operation operation request
+ *
+ * Called when block operation request @rq from queue @q is sent to a
+ * device driver for processing.
+ */
+DEFINE_EVENT(block_rq, block_rq_issue,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+)
+
+/**
+ * block_bio_bounce - used bounce buffer when processing block operation
+ * @q: queue holding the block operation
+ * @bio: block operation
+ *
+ * A bounce buffer was used to handle the block operation @bio in @q.
+ * This occurs when hardware limitations prevent a direct transfer of
+ * data between the @bio data memory area and the IO device. Use of a
+ * bounce buffer requires extra copying of data and decreases
+ * performance.
+ */
+TRACE_EVENT(block_bio_bounce,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( unsigned int, rwbs )
+ __array_text( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, bio->bi_bdev ?
+ bio->bi_bdev->bd_dev : 0)
+ tp_assign(sector, bio->bi_sector)
+ tp_assign(nr_sector, bio->bi_size >> 9)
+ blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+)
+
+/**
+ * block_bio_complete - completed all work on the block operation
+ * @q: queue holding the block operation
+ * @bio: block operation completed
+ * @error: io error value
+ *
+ * This tracepoint indicates there is no further work to do on this
+ * block IO operation @bio.
+ */
+TRACE_EVENT(block_bio_complete,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int error),
+
+ TP_ARGS(q, bio, error),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned, nr_sector )
+ __field( int, error )
+ __field( unsigned int, rwbs )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, bio->bi_bdev->bd_dev)
+ tp_assign(sector, bio->bi_sector)
+ tp_assign(nr_sector, bio->bi_size >> 9)
+ tp_assign(error, error)
+ blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%d]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->error)
+)
+
+DECLARE_EVENT_CLASS(block_bio,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( unsigned int, rwbs )
+ __array_text( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, bio->bi_bdev->bd_dev)
+ tp_assign(sector, bio->bi_sector)
+ tp_assign(nr_sector, bio->bi_size >> 9)
+ blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+)
+
+/**
+ * block_bio_backmerge - merging block operation to the end of an existing operation
+ * @q: queue holding operation
+ * @bio: new block operation to merge
+ *
+ * Merging block request @bio to the end of an existing block request
+ * in queue @q.
+ */
+DEFINE_EVENT(block_bio, block_bio_backmerge,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio)
+)
+
+/**
+ * block_bio_frontmerge - merging block operation to the beginning of an existing operation
+ * @q: queue holding operation
+ * @bio: new block operation to merge
+ *
+ * Merging block IO operation @bio to the beginning of an existing block
+ * operation in queue @q.
+ */
+DEFINE_EVENT(block_bio, block_bio_frontmerge,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio)
+)
+
+/**
+ * block_bio_queue - putting new block IO operation in queue
+ * @q: queue holding operation
+ * @bio: new block operation
+ *
+ * About to place the block IO operation @bio into queue @q.
+ */
+DEFINE_EVENT(block_bio, block_bio_queue,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio)
+)
+
+DECLARE_EVENT_CLASS(block_get_rq,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
+
+ TP_ARGS(q, bio, rw),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( unsigned int, rwbs )
+ __array_text( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, bio ? bio->bi_bdev->bd_dev : 0)
+ tp_assign(sector, bio ? bio->bi_sector : 0)
+ tp_assign(nr_sector, bio ? bio->bi_size >> 9 : 0)
+ blk_fill_rwbs(rwbs, bio ? bio->bi_rw : 0,
+ bio ? bio->bi_size >> 9 : 0)
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+)
+
+/**
+ * block_getrq - get a free request entry in queue for block IO operations
+ * @q: queue for operations
+ * @bio: pending block IO operation
+ * @rw: low bit indicates a read (%0) or a write (%1)
+ *
+ * A request struct for queue @q has been allocated to handle the
+ * block IO operation @bio.
+ */
+DEFINE_EVENT(block_get_rq, block_getrq,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
+
+ TP_ARGS(q, bio, rw)
+)
+
+/**
+ * block_sleeprq - waiting to get a free request entry in queue for block IO operation
+ * @q: queue for operation
+ * @bio: pending block IO operation
+ * @rw: low bit indicates a read (%0) or a write (%1)
+ *
+ * In the case where a request struct cannot be provided for queue @q
+ * the process needs to wait for an request struct to become
+ * available. This tracepoint event is generated each time the
+ * process goes to sleep waiting for request struct become available.
+ */
+DEFINE_EVENT(block_get_rq, block_sleeprq,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
+
+ TP_ARGS(q, bio, rw)
+)
+
+/**
+ * block_plug - keep operations requests in request queue
+ * @q: request queue to plug
+ *
+ * Plug the request queue @q. Do not allow block operation requests
+ * to be sent to the device driver. Instead, accumulate requests in
+ * the queue to improve throughput performance of the block device.
+ */
+TRACE_EVENT(block_plug,
+
+ TP_PROTO(struct request_queue *q),
+
+ TP_ARGS(q),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("[%s]", __entry->comm)
+)
+
+DECLARE_EVENT_CLASS(block_unplug,
+
+ TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
+
+ TP_ARGS(q, depth, explicit),
+
+ TP_STRUCT__entry(
+ __field( int, nr_rq )
+ __array_text( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ tp_assign(nr_rq, depth)
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
+)
+
+/**
+ * block_unplug - release of operations requests in request queue
+ * @q: request queue to unplug
+ * @depth: number of requests just added to the queue
+ * @explicit: whether this was an explicit unplug, or one from schedule()
+ *
+ * Unplug request queue @q because device driver is scheduled to work
+ * on elements in the request queue.
+ */
+DEFINE_EVENT(block_unplug, block_unplug,
+
+ TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
+
+ TP_ARGS(q, depth, explicit)
+)
+
+/**
+ * block_split - split a single bio struct into two bio structs
+ * @q: queue containing the bio
+ * @bio: block operation being split
+ * @new_sector: The starting sector for the new bio
+ *
+ * The bio request @bio in request queue @q needs to be split into two
+ * bio requests. The newly created @bio request starts at
+ * @new_sector. This split may be required due to hardware limitation
+ * such as operation crossing device boundaries in a RAID system.
+ */
+TRACE_EVENT(block_split,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio,
+ unsigned int new_sector),
+
+ TP_ARGS(q, bio, new_sector),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( sector_t, new_sector )
+ __field( unsigned int, rwbs )
+ __array_text( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, bio->bi_bdev->bd_dev)
+ tp_assign(sector, bio->bi_sector)
+ tp_assign(new_sector, new_sector)
+ blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ ),
+
+ TP_printk("%d,%d %s %llu / %llu [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ (unsigned long long)__entry->new_sector,
+ __entry->comm)
+)
+
+/**
+ * block_bio_remap - map request for a logical device to the raw device
+ * @q: queue holding the operation
+ * @bio: revised operation
+ * @dev: device for the operation
+ * @from: original sector for the operation
+ *
+ * An operation for a logical device has been mapped to the
+ * raw block device.
+ */
+TRACE_EVENT(block_bio_remap,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
+ sector_t from),
+
+ TP_ARGS(q, bio, dev, from),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( dev_t, old_dev )
+ __field( sector_t, old_sector )
+ __field( unsigned int, rwbs )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, bio->bi_bdev->bd_dev)
+ tp_assign(sector, bio->bi_sector)
+ tp_assign(nr_sector, bio->bi_size >> 9)
+ tp_assign(old_dev, dev)
+ tp_assign(old_sector, from)
+ blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)
+ ),
+
+ TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector,
+ MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
+ (unsigned long long)__entry->old_sector)
+)
+
+/**
+ * block_rq_remap - map request for a block operation request
+ * @q: queue holding the operation
+ * @rq: block IO operation request
+ * @dev: device for the operation
+ * @from: original sector for the operation
+ *
+ * The block operation request @rq in @q has been remapped. The block
+ * operation request @rq holds the current information and @from hold
+ * the original sector.
+ */
+TRACE_EVENT(block_rq_remap,
+
+ TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
+ sector_t from),
+
+ TP_ARGS(q, rq, dev, from),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( dev_t, old_dev )
+ __field( sector_t, old_sector )
+ __field( unsigned int, rwbs )
+ ),
+
+ TP_fast_assign(
+ tp_assign(dev, disk_devt(rq->rq_disk))
+ tp_assign(sector, blk_rq_pos(rq))
+ tp_assign(nr_sector, blk_rq_sectors(rq))
+ tp_assign(old_dev, dev)
+ tp_assign(old_sector, from)
+ blk_fill_rwbs(rwbs, rq->cmd_flags, blk_rq_bytes(rq))
+ ),
+
+ TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __print_rwbs_flags(__entry->rwbs),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector,
+ MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
+ (unsigned long long)__entry->old_sector)
+)
+
+#undef __print_rwbs_flags
+#undef blk_fill_rwbs
+
+#endif /* _TRACE_BLOCK_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"
+
diff --git a/drivers/staging/lttng/instrumentation/events/lttng-module/irq.h b/drivers/staging/lttng/instrumentation/events/lttng-module/irq.h
new file mode 100644
index 0000000..344015d
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/lttng-module/irq.h
@@ -0,0 +1,155 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM irq
+
+#if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_IRQ_H
+
+#include <linux/tracepoint.h>
+
+#ifndef _TRACE_IRQ_DEF_
+#define _TRACE_IRQ_DEF_
+
+struct irqaction;
+struct softirq_action;
+
+#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
+#define show_softirq_name(val) \
+ __print_symbolic(val, \
+ softirq_name(HI), \
+ softirq_name(TIMER), \
+ softirq_name(NET_TX), \
+ softirq_name(NET_RX), \
+ softirq_name(BLOCK), \
+ softirq_name(BLOCK_IOPOLL), \
+ softirq_name(TASKLET), \
+ softirq_name(SCHED), \
+ softirq_name(HRTIMER), \
+ softirq_name(RCU))
+
+#endif /* _TRACE_IRQ_DEF_ */
+
+/**
+ * irq_handler_entry - called immediately before the irq action handler
+ * @irq: irq number
+ * @action: pointer to struct irqaction
+ *
+ * The struct irqaction pointed to by @action contains various
+ * information about the handler, including the device name,
+ * @action->name, and the device id, @action->dev_id. When used in
+ * conjunction with the irq_handler_exit tracepoint, we can figure
+ * out irq handler latencies.
+ */
+TRACE_EVENT(irq_handler_entry,
+
+ TP_PROTO(int irq, struct irqaction *action),
+
+ TP_ARGS(irq, action),
+
+ TP_STRUCT__entry(
+ __field( int, irq )
+ __string( name, action->name )
+ ),
+
+ TP_fast_assign(
+ tp_assign(irq, irq)
+ tp_strcpy(name, action->name)
+ ),
+
+ TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
+)
+
+/**
+ * irq_handler_exit - called immediately after the irq action handler returns
+ * @irq: irq number
+ * @action: pointer to struct irqaction
+ * @ret: return value
+ *
+ * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
+ * @action->handler scuccessully handled this irq. Otherwise, the irq might be
+ * a shared irq line, or the irq was not handled successfully. Can be used in
+ * conjunction with the irq_handler_entry to understand irq handler latencies.
+ */
+TRACE_EVENT(irq_handler_exit,
+
+ TP_PROTO(int irq, struct irqaction *action, int ret),
+
+ TP_ARGS(irq, action, ret),
+
+ TP_STRUCT__entry(
+ __field( int, irq )
+ __field( int, ret )
+ ),
+
+ TP_fast_assign(
+ tp_assign(irq, irq)
+ tp_assign(ret, ret)
+ ),
+
+ TP_printk("irq=%d ret=%s",
+ __entry->irq, __entry->ret ? "handled" : "unhandled")
+)
+
+DECLARE_EVENT_CLASS(softirq,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, vec )
+ ),
+
+ TP_fast_assign(
+ tp_assign(vec, vec_nr)
+ ),
+
+ TP_printk("vec=%u [action=%s]", __entry->vec,
+ show_softirq_name(__entry->vec))
+)
+
+/**
+ * softirq_entry - called immediately before the softirq handler
+ * @vec_nr: softirq vector number
+ *
+ * When used in combination with the softirq_exit tracepoint
+ * we can determine the softirq handler runtine.
+ */
+DEFINE_EVENT(softirq, softirq_entry,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr)
+)
+
+/**
+ * softirq_exit - called immediately after the softirq handler returns
+ * @vec_nr: softirq vector number
+ *
+ * When used in combination with the softirq_entry tracepoint
+ * we can determine the softirq handler runtine.
+ */
+DEFINE_EVENT(softirq, softirq_exit,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr)
+)
+
+/**
+ * softirq_raise - called immediately when a softirq is raised
+ * @vec_nr: softirq vector number
+ *
+ * When used in combination with the softirq_entry tracepoint
+ * we can determine the softirq raise to run latency.
+ */
+DEFINE_EVENT(softirq, softirq_raise,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr)
+)
+
+#endif /* _TRACE_IRQ_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"
diff --git a/drivers/staging/lttng/instrumentation/events/lttng-module/kvm.h b/drivers/staging/lttng/instrumentation/events/lttng-module/kvm.h
new file mode 100644
index 0000000..e10455b
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/lttng-module/kvm.h
@@ -0,0 +1,312 @@
+#if !defined(_TRACE_KVM_MAIN_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KVM_MAIN_H
+
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kvm
+
+#define ERSN(x) { KVM_EXIT_##x, "KVM_EXIT_" #x }
+
+#define kvm_trace_exit_reason \
+ ERSN(UNKNOWN), ERSN(EXCEPTION), ERSN(IO), ERSN(HYPERCALL), \
+ ERSN(DEBUG), ERSN(HLT), ERSN(MMIO), ERSN(IRQ_WINDOW_OPEN), \
+ ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR), \
+ ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\
+ ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI)
+
+TRACE_EVENT(kvm_userspace_exit,
+ TP_PROTO(__u32 reason, int errno),
+ TP_ARGS(reason, errno),
+
+ TP_STRUCT__entry(
+ __field( __u32, reason )
+ __field( int, errno )
+ ),
+
+ TP_fast_assign(
+ tp_assign(reason, reason)
+ tp_assign(errno, errno)
+ ),
+
+ TP_printk("reason %s (%d)",
+ __entry->errno < 0 ?
+ (__entry->errno == -EINTR ? "restart" : "error") :
+ __print_symbolic(__entry->reason, kvm_trace_exit_reason),
+ __entry->errno < 0 ? -__entry->errno : __entry->reason)
+)
+
+#if defined(__KVM_HAVE_IOAPIC)
+TRACE_EVENT(kvm_set_irq,
+ TP_PROTO(unsigned int gsi, int level, int irq_source_id),
+ TP_ARGS(gsi, level, irq_source_id),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, gsi )
+ __field( int, level )
+ __field( int, irq_source_id )
+ ),
+
+ TP_fast_assign(
+ tp_assign(gsi, gsi)
+ tp_assign(level, level)
+ tp_assign(irq_source_id, irq_source_id)
+ ),
+
+ TP_printk("gsi %u level %d source %d",
+ __entry->gsi, __entry->level, __entry->irq_source_id)
+)
+
+#define kvm_deliver_mode \
+ {0x0, "Fixed"}, \
+ {0x1, "LowPrio"}, \
+ {0x2, "SMI"}, \
+ {0x3, "Res3"}, \
+ {0x4, "NMI"}, \
+ {0x5, "INIT"}, \
+ {0x6, "SIPI"}, \
+ {0x7, "ExtINT"}
+
+TRACE_EVENT(kvm_ioapic_set_irq,
+ TP_PROTO(__u64 e, int pin, bool coalesced),
+ TP_ARGS(e, pin, coalesced),
+
+ TP_STRUCT__entry(
+ __field( __u64, e )
+ __field( int, pin )
+ __field( bool, coalesced )
+ ),
+
+ TP_fast_assign(
+ tp_assign(e, e)
+ tp_assign(pin, pin)
+ tp_assign(coalesced, coalesced)
+ ),
+
+ TP_printk("pin %u dst %x vec=%u (%s|%s|%s%s)%s",
+ __entry->pin, (u8)(__entry->e >> 56), (u8)__entry->e,
+ __print_symbolic((__entry->e >> 8 & 0x7), kvm_deliver_mode),
+ (__entry->e & (1<<11)) ? "logical" : "physical",
+ (__entry->e & (1<<15)) ? "level" : "edge",
+ (__entry->e & (1<<16)) ? "|masked" : "",
+ __entry->coalesced ? " (coalesced)" : "")
+)
+
+TRACE_EVENT(kvm_msi_set_irq,
+ TP_PROTO(__u64 address, __u64 data),
+ TP_ARGS(address, data),
+
+ TP_STRUCT__entry(
+ __field( __u64, address )
+ __field( __u64, data )
+ ),
+
+ TP_fast_assign(
+ tp_assign(address, address)
+ tp_assign(data, data)
+ ),
+
+ TP_printk("dst %u vec %x (%s|%s|%s%s)",
+ (u8)(__entry->address >> 12), (u8)__entry->data,
+ __print_symbolic((__entry->data >> 8 & 0x7), kvm_deliver_mode),
+ (__entry->address & (1<<2)) ? "logical" : "physical",
+ (__entry->data & (1<<15)) ? "level" : "edge",
+ (__entry->address & (1<<3)) ? "|rh" : "")
+)
+
+#define kvm_irqchips \
+ {KVM_IRQCHIP_PIC_MASTER, "PIC master"}, \
+ {KVM_IRQCHIP_PIC_SLAVE, "PIC slave"}, \
+ {KVM_IRQCHIP_IOAPIC, "IOAPIC"}
+
+TRACE_EVENT(kvm_ack_irq,
+ TP_PROTO(unsigned int irqchip, unsigned int pin),
+ TP_ARGS(irqchip, pin),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, irqchip )
+ __field( unsigned int, pin )
+ ),
+
+ TP_fast_assign(
+ tp_assign(irqchip, irqchip)
+ tp_assign(pin, pin)
+ ),
+
+ TP_printk("irqchip %s pin %u",
+ __print_symbolic(__entry->irqchip, kvm_irqchips),
+ __entry->pin)
+)
+
+
+
+#endif /* defined(__KVM_HAVE_IOAPIC) */
+
+#define KVM_TRACE_MMIO_READ_UNSATISFIED 0
+#define KVM_TRACE_MMIO_READ 1
+#define KVM_TRACE_MMIO_WRITE 2
+
+#define kvm_trace_symbol_mmio \
+ { KVM_TRACE_MMIO_READ_UNSATISFIED, "unsatisfied-read" }, \
+ { KVM_TRACE_MMIO_READ, "read" }, \
+ { KVM_TRACE_MMIO_WRITE, "write" }
+
+TRACE_EVENT(kvm_mmio,
+ TP_PROTO(int type, int len, u64 gpa, u64 val),
+ TP_ARGS(type, len, gpa, val),
+
+ TP_STRUCT__entry(
+ __field( u32, type )
+ __field( u32, len )
+ __field( u64, gpa )
+ __field( u64, val )
+ ),
+
+ TP_fast_assign(
+ tp_assign(type, type)
+ tp_assign(len, len)
+ tp_assign(gpa, gpa)
+ tp_assign(val, val)
+ ),
+
+ TP_printk("mmio %s len %u gpa 0x%llx val 0x%llx",
+ __print_symbolic(__entry->type, kvm_trace_symbol_mmio),
+ __entry->len, __entry->gpa, __entry->val)
+)
+
+#define kvm_fpu_load_symbol \
+ {0, "unload"}, \
+ {1, "load"}
+
+TRACE_EVENT(kvm_fpu,
+ TP_PROTO(int load),
+ TP_ARGS(load),
+
+ TP_STRUCT__entry(
+ __field( u32, load )
+ ),
+
+ TP_fast_assign(
+ tp_assign(load, load)
+ ),
+
+ TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol))
+)
+
+TRACE_EVENT(kvm_age_page,
+ TP_PROTO(ulong hva, struct kvm_memory_slot *slot, int ref),
+ TP_ARGS(hva, slot, ref),
+
+ TP_STRUCT__entry(
+ __field( u64, hva )
+ __field( u64, gfn )
+ __field( u8, referenced )
+ ),
+
+ TP_fast_assign(
+ tp_assign(hva, hva)
+ tp_assign(gfn,
+ slot->base_gfn + ((hva - slot->userspace_addr) >> PAGE_SHIFT))
+ tp_assign(referenced, ref)
+ ),
+
+ TP_printk("hva %llx gfn %llx %s",
+ __entry->hva, __entry->gfn,
+ __entry->referenced ? "YOUNG" : "OLD")
+)
+
+#ifdef CONFIG_KVM_ASYNC_PF
+DECLARE_EVENT_CLASS(kvm_async_get_page_class,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn),
+
+ TP_STRUCT__entry(
+ __field(__u64, gva)
+ __field(u64, gfn)
+ ),
+
+ TP_fast_assign(
+ tp_assign(gva, gva)
+ tp_assign(gfn, gfn)
+ ),
+
+ TP_printk("gva = %#llx, gfn = %#llx", __entry->gva, __entry->gfn)
+)
+
+DEFINE_EVENT(kvm_async_get_page_class, kvm_try_async_get_page,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn)
+)
+
+DEFINE_EVENT(kvm_async_get_page_class, kvm_async_pf_doublefault,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn)
+)
+
+DECLARE_EVENT_CLASS(kvm_async_pf_nopresent_ready,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva),
+
+ TP_STRUCT__entry(
+ __field(__u64, token)
+ __field(__u64, gva)
+ ),
+
+ TP_fast_assign(
+ tp_assign(token, token)
+ tp_assign(gva, gva)
+ ),
+
+ TP_printk("token %#llx gva %#llx", __entry->token, __entry->gva)
+
+)
+
+DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_not_present,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva)
+)
+
+DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_ready,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva)
+)
+
+TRACE_EVENT(
+ kvm_async_pf_completed,
+ TP_PROTO(unsigned long address, struct page *page, u64 gva),
+ TP_ARGS(address, page, gva),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, address)
+ __field(pfn_t, pfn)
+ __field(u64, gva)
+ ),
+
+ TP_fast_assign(
+ tp_assign(address, address)
+ tp_assign(pfn, page ? page_to_pfn(page) : 0)
+ tp_assign(gva, gva)
+ ),
+
+ TP_printk("gva %#llx address %#lx pfn %#llx", __entry->gva,
+ __entry->address, __entry->pfn)
+)
+
+#endif
+
+#endif /* _TRACE_KVM_MAIN_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"
diff --git a/drivers/staging/lttng/instrumentation/events/lttng-module/lttng.h b/drivers/staging/lttng/instrumentation/events/lttng-module/lttng.h
new file mode 100644
index 0000000..6f3d6d1
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/lttng-module/lttng.h
@@ -0,0 +1,34 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM lttng
+
+#if !defined(_TRACE_LTTNG_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_LTTNG_H
+
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(lttng_metadata,
+
+ TP_PROTO(const char *str),
+
+ TP_ARGS(str),
+
+ /*
+ * Not exactly a string: more a sequence of bytes (dynamic
+ * array) without the length. This is a dummy anyway: we only
+ * use this declaration to generate an event metadata entry.
+ */
+ TP_STRUCT__entry(
+ __string( str, str )
+ ),
+
+ TP_fast_assign(
+ tp_strcpy(str, str)
+ ),
+
+ TP_printk("")
+)
+
+#endif /* _TRACE_LTTNG_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"
diff --git a/drivers/staging/lttng/instrumentation/events/lttng-module/sched.h b/drivers/staging/lttng/instrumentation/events/lttng-module/sched.h
new file mode 100644
index 0000000..33f6921
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/lttng-module/sched.h
@@ -0,0 +1,400 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sched
+
+#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SCHED_H
+
+#include <linux/sched.h>
+#include <linux/tracepoint.h>
+
+#ifndef _TRACE_SCHED_DEF_
+#define _TRACE_SCHED_DEF_
+
+static inline long __trace_sched_switch_state(struct task_struct *p)
+{
+ long state = p->state;
+
+#ifdef CONFIG_PREEMPT
+ /*
+ * For all intents and purposes a preempted task is a running task.
+ */
+ if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
+ state = TASK_RUNNING;
+#endif
+
+ return state;
+}
+
+#endif /* _TRACE_SCHED_DEF_ */
+
+/*
+ * Tracepoint for calling kthread_stop, performed to end a kthread:
+ */
+TRACE_EVENT(sched_kthread_stop,
+
+ TP_PROTO(struct task_struct *t),
+
+ TP_ARGS(t),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, t->comm, TASK_COMM_LEN)
+ tp_assign(tid, t->pid)
+ ),
+
+ TP_printk("comm=%s tid=%d", __entry->comm, __entry->tid)
+)
+
+/*
+ * Tracepoint for the return value of the kthread stopping:
+ */
+TRACE_EVENT(sched_kthread_stop_ret,
+
+ TP_PROTO(int ret),
+
+ TP_ARGS(ret),
+
+ TP_STRUCT__entry(
+ __field( int, ret )
+ ),
+
+ TP_fast_assign(
+ tp_assign(ret, ret)
+ ),
+
+ TP_printk("ret=%d", __entry->ret)
+)
+
+/*
+ * Tracepoint for waking up a task:
+ */
+DECLARE_EVENT_CLASS(sched_wakeup_template,
+
+ TP_PROTO(struct task_struct *p, int success),
+
+ TP_ARGS(p, success),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( int, prio )
+ __field( int, success )
+ __field( int, target_cpu )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, p->comm, TASK_COMM_LEN)
+ tp_assign(tid, p->pid)
+ tp_assign(prio, p->prio)
+ tp_assign(success, success)
+ tp_assign(target_cpu, task_cpu(p))
+ ),
+
+ TP_printk("comm=%s tid=%d prio=%d success=%d target_cpu=%03d",
+ __entry->comm, __entry->tid, __entry->prio,
+ __entry->success, __entry->target_cpu)
+)
+
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
+ TP_PROTO(struct task_struct *p, int success),
+ TP_ARGS(p, success))
+
+/*
+ * Tracepoint for waking up a new task:
+ */
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
+ TP_PROTO(struct task_struct *p, int success),
+ TP_ARGS(p, success))
+
+/*
+ * Tracepoint for task switches, performed by the scheduler:
+ */
+TRACE_EVENT(sched_switch,
+
+ TP_PROTO(struct task_struct *prev,
+ struct task_struct *next),
+
+ TP_ARGS(prev, next),
+
+ TP_STRUCT__entry(
+ __array_text( char, prev_comm, TASK_COMM_LEN )
+ __field( pid_t, prev_tid )
+ __field( int, prev_prio )
+ __field( long, prev_state )
+ __array_text( char, next_comm, TASK_COMM_LEN )
+ __field( pid_t, next_tid )
+ __field( int, next_prio )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(next_comm, next->comm, TASK_COMM_LEN)
+ tp_assign(prev_tid, prev->pid)
+ tp_assign(prev_prio, prev->prio - MAX_RT_PRIO)
+ tp_assign(prev_state, __trace_sched_switch_state(prev))
+ tp_memcpy(prev_comm, prev->comm, TASK_COMM_LEN)
+ tp_assign(next_tid, next->pid)
+ tp_assign(next_prio, next->prio - MAX_RT_PRIO)
+ ),
+
+ TP_printk("prev_comm=%s prev_tid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_tid=%d next_prio=%d",
+ __entry->prev_comm, __entry->prev_tid, __entry->prev_prio,
+ __entry->prev_state ?
+ __print_flags(__entry->prev_state, "|",
+ { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
+ { 16, "Z" }, { 32, "X" }, { 64, "x" },
+ { 128, "W" }) : "R",
+ __entry->next_comm, __entry->next_tid, __entry->next_prio)
+)
+
+/*
+ * Tracepoint for a task being migrated:
+ */
+TRACE_EVENT(sched_migrate_task,
+
+ TP_PROTO(struct task_struct *p, int dest_cpu),
+
+ TP_ARGS(p, dest_cpu),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( int, prio )
+ __field( int, orig_cpu )
+ __field( int, dest_cpu )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, p->comm, TASK_COMM_LEN)
+ tp_assign(tid, p->pid)
+ tp_assign(prio, p->prio - MAX_RT_PRIO)
+ tp_assign(orig_cpu, task_cpu(p))
+ tp_assign(dest_cpu, dest_cpu)
+ ),
+
+ TP_printk("comm=%s tid=%d prio=%d orig_cpu=%d dest_cpu=%d",
+ __entry->comm, __entry->tid, __entry->prio,
+ __entry->orig_cpu, __entry->dest_cpu)
+)
+
+DECLARE_EVENT_CLASS(sched_process_template,
+
+ TP_PROTO(struct task_struct *p),
+
+ TP_ARGS(p),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( int, prio )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, p->comm, TASK_COMM_LEN)
+ tp_assign(tid, p->pid)
+ tp_assign(prio, p->prio - MAX_RT_PRIO)
+ ),
+
+ TP_printk("comm=%s tid=%d prio=%d",
+ __entry->comm, __entry->tid, __entry->prio)
+)
+
+/*
+ * Tracepoint for freeing a task:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_free,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p))
+
+
+/*
+ * Tracepoint for a task exiting:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_exit,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p))
+
+/*
+ * Tracepoint for waiting on task to unschedule:
+ */
+DEFINE_EVENT(sched_process_template, sched_wait_task,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p))
+
+/*
+ * Tracepoint for a waiting task:
+ */
+TRACE_EVENT(sched_process_wait,
+
+ TP_PROTO(struct pid *pid),
+
+ TP_ARGS(pid),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( int, prio )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, current->comm, TASK_COMM_LEN)
+ tp_assign(tid, pid_nr(pid))
+ tp_assign(prio, current->prio - MAX_RT_PRIO)
+ ),
+
+ TP_printk("comm=%s tid=%d prio=%d",
+ __entry->comm, __entry->tid, __entry->prio)
+)
+
+/*
+ * Tracepoint for do_fork:
+ */
+TRACE_EVENT(sched_process_fork,
+
+ TP_PROTO(struct task_struct *parent, struct task_struct *child),
+
+ TP_ARGS(parent, child),
+
+ TP_STRUCT__entry(
+ __array_text( char, parent_comm, TASK_COMM_LEN )
+ __field( pid_t, parent_tid )
+ __array_text( char, child_comm, TASK_COMM_LEN )
+ __field( pid_t, child_tid )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(parent_comm, parent->comm, TASK_COMM_LEN)
+ tp_assign(parent_tid, parent->pid)
+ tp_memcpy(child_comm, child->comm, TASK_COMM_LEN)
+ tp_assign(child_tid, child->pid)
+ ),
+
+ TP_printk("comm=%s tid=%d child_comm=%s child_tid=%d",
+ __entry->parent_comm, __entry->parent_tid,
+ __entry->child_comm, __entry->child_tid)
+)
+
+/*
+ * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
+ * adding sched_stat support to SCHED_FIFO/RR would be welcome.
+ */
+DECLARE_EVENT_CLASS(sched_stat_template,
+
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+
+ TP_ARGS(tsk, delay),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( u64, delay )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
+ tp_assign(tid, tsk->pid)
+ tp_assign(delay, delay)
+ )
+ TP_perf_assign(
+ __perf_count(delay)
+ ),
+
+ TP_printk("comm=%s tid=%d delay=%Lu [ns]",
+ __entry->comm, __entry->tid,
+ (unsigned long long)__entry->delay)
+)
+
+
+/*
+ * Tracepoint for accounting wait time (time the task is runnable
+ * but not actually running due to scheduler contention).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_wait,
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+ TP_ARGS(tsk, delay))
+
+/*
+ * Tracepoint for accounting sleep time (time the task is not runnable,
+ * including iowait, see below).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_sleep,
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+ TP_ARGS(tsk, delay))
+
+/*
+ * Tracepoint for accounting iowait time (time the task is not runnable
+ * due to waiting on IO to complete).
+ */
+DEFINE_EVENT(sched_stat_template, sched_stat_iowait,
+ TP_PROTO(struct task_struct *tsk, u64 delay),
+ TP_ARGS(tsk, delay))
+
+/*
+ * Tracepoint for accounting runtime (time the task is executing
+ * on a CPU).
+ */
+TRACE_EVENT(sched_stat_runtime,
+
+ TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
+
+ TP_ARGS(tsk, runtime, vruntime),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( u64, runtime )
+ __field( u64, vruntime )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
+ tp_assign(tid, tsk->pid)
+ tp_assign(runtime, runtime)
+ tp_assign(vruntime, vruntime)
+ )
+ TP_perf_assign(
+ __perf_count(runtime)
+ ),
+
+ TP_printk("comm=%s tid=%d runtime=%Lu [ns] vruntime=%Lu [ns]",
+ __entry->comm, __entry->tid,
+ (unsigned long long)__entry->runtime,
+ (unsigned long long)__entry->vruntime)
+)
+
+/*
+ * Tracepoint for showing priority inheritance modifying a tasks
+ * priority.
+ */
+TRACE_EVENT(sched_pi_setprio,
+
+ TP_PROTO(struct task_struct *tsk, int newprio),
+
+ TP_ARGS(tsk, newprio),
+
+ TP_STRUCT__entry(
+ __array_text( char, comm, TASK_COMM_LEN )
+ __field( pid_t, tid )
+ __field( int, oldprio )
+ __field( int, newprio )
+ ),
+
+ TP_fast_assign(
+ tp_memcpy(comm, tsk->comm, TASK_COMM_LEN)
+ tp_assign(tid, tsk->pid)
+ tp_assign(oldprio, tsk->prio - MAX_RT_PRIO)
+ tp_assign(newprio, newprio - MAX_RT_PRIO)
+ ),
+
+ TP_printk("comm=%s tid=%d oldprio=%d newprio=%d",
+ __entry->comm, __entry->tid,
+ __entry->oldprio, __entry->newprio)
+)
+
+#endif /* _TRACE_SCHED_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"
diff --git a/drivers/staging/lttng/instrumentation/events/lttng-module/syscalls.h b/drivers/staging/lttng/instrumentation/events/lttng-module/syscalls.h
new file mode 100644
index 0000000..a2bb956
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/lttng-module/syscalls.h
@@ -0,0 +1,76 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM raw_syscalls
+#define TRACE_INCLUDE_FILE syscalls
+
+#if !defined(_TRACE_EVENTS_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_EVENTS_SYSCALLS_H
+
+#include <linux/tracepoint.h>
+
+#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
+
+#ifndef _TRACE_SYSCALLS_DEF_
+#define _TRACE_SYSCALLS_DEF_
+
+#include <asm/ptrace.h>
+#include <asm/syscall.h>
+
+#endif /* _TRACE_SYSCALLS_DEF_ */
+
+TRACE_EVENT(sys_enter,
+
+ TP_PROTO(struct pt_regs *regs, long id),
+
+ TP_ARGS(regs, id),
+
+ TP_STRUCT__entry(
+ __field( long, id )
+ __array( unsigned long, args, 6 )
+ ),
+
+ TP_fast_assign(
+ tp_assign(id, id)
+ {
+ tp_memcpy(args,
+ ({
+ unsigned long args_copy[6];
+ syscall_get_arguments(current, regs,
+ 0, 6, args_copy);
+ args_copy;
+ }), 6 * sizeof(unsigned long));
+ }
+ ),
+
+ TP_printk("NR %ld (%lx, %lx, %lx, %lx, %lx, %lx)",
+ __entry->id,
+ __entry->args[0], __entry->args[1], __entry->args[2],
+ __entry->args[3], __entry->args[4], __entry->args[5])
+)
+
+TRACE_EVENT(sys_exit,
+
+ TP_PROTO(struct pt_regs *regs, long ret),
+
+ TP_ARGS(regs, ret),
+
+ TP_STRUCT__entry(
+ __field( long, id )
+ __field( long, ret )
+ ),
+
+ TP_fast_assign(
+ tp_assign(id, syscall_get_nr(current, regs))
+ tp_assign(ret, ret)
+ ),
+
+ TP_printk("NR %ld = %ld",
+ __entry->id, __entry->ret)
+)
+
+#endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */
+
+#endif /* _TRACE_EVENTS_SYSCALLS_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"
+
diff --git a/drivers/staging/lttng/instrumentation/events/mainline/block.h b/drivers/staging/lttng/instrumentation/events/mainline/block.h
new file mode 100644
index 0000000..bf36654
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/mainline/block.h
@@ -0,0 +1,569 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM block
+
+#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_BLOCK_H
+
+#include <linux/blktrace_api.h>
+#include <linux/blkdev.h>
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(block_rq_with_error,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( int, errors )
+ __array( char, rwbs, 6 )
+ __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
+ __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_pos(rq);
+ __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_sectors(rq);
+ __entry->errors = rq->errors;
+
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_dump_cmd(__get_str(cmd), rq);
+ ),
+
+ TP_printk("%d,%d %s (%s) %llu + %u [%d]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->rwbs, __get_str(cmd),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->errors)
+);
+
+/**
+ * block_rq_abort - abort block operation request
+ * @q: queue containing the block operation request
+ * @rq: block IO operation request
+ *
+ * Called immediately after pending block IO operation request @rq in
+ * queue @q is aborted. The fields in the operation request @rq
+ * can be examined to determine which device and sectors the pending
+ * operation would access.
+ */
+DEFINE_EVENT(block_rq_with_error, block_rq_abort,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+);
+
+/**
+ * block_rq_requeue - place block IO request back on a queue
+ * @q: queue holding operation
+ * @rq: block IO operation request
+ *
+ * The block operation request @rq is being placed back into queue
+ * @q. For some reason the request was not completed and needs to be
+ * put back in the queue.
+ */
+DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+);
+
+/**
+ * block_rq_complete - block IO operation completed by device driver
+ * @q: queue containing the block operation request
+ * @rq: block operations request
+ *
+ * The block_rq_complete tracepoint event indicates that some portion
+ * of operation request has been completed by the device driver. If
+ * the @rq->bio is %NULL, then there is absolutely no additional work to
+ * do for the request. If @rq->bio is non-NULL then there is
+ * additional work required to complete the request.
+ */
+DEFINE_EVENT(block_rq_with_error, block_rq_complete,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+);
+
+DECLARE_EVENT_CLASS(block_rq,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( unsigned int, bytes )
+ __array( char, rwbs, 6 )
+ __array( char, comm, TASK_COMM_LEN )
+ __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
+ __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_pos(rq);
+ __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ 0 : blk_rq_sectors(rq);
+ __entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
+ blk_rq_bytes(rq) : 0;
+
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_dump_cmd(__get_str(cmd), rq);
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->rwbs, __entry->bytes, __get_str(cmd),
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+);
+
+/**
+ * block_rq_insert - insert block operation request into queue
+ * @q: target queue
+ * @rq: block IO operation request
+ *
+ * Called immediately before block operation request @rq is inserted
+ * into queue @q. The fields in the operation request @rq struct can
+ * be examined to determine which device and sectors the pending
+ * operation would access.
+ */
+DEFINE_EVENT(block_rq, block_rq_insert,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+);
+
+/**
+ * block_rq_issue - issue pending block IO request operation to device driver
+ * @q: queue holding operation
+ * @rq: block IO operation operation request
+ *
+ * Called when block operation request @rq from queue @q is sent to a
+ * device driver for processing.
+ */
+DEFINE_EVENT(block_rq, block_rq_issue,
+
+ TP_PROTO(struct request_queue *q, struct request *rq),
+
+ TP_ARGS(q, rq)
+);
+
+/**
+ * block_bio_bounce - used bounce buffer when processing block operation
+ * @q: queue holding the block operation
+ * @bio: block operation
+ *
+ * A bounce buffer was used to handle the block operation @bio in @q.
+ * This occurs when hardware limitations prevent a direct transfer of
+ * data between the @bio data memory area and the IO device. Use of a
+ * bounce buffer requires extra copying of data and decreases
+ * performance.
+ */
+TRACE_EVENT(block_bio_bounce,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __array( char, rwbs, 6 )
+ __array( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio->bi_bdev ?
+ bio->bi_bdev->bd_dev : 0;
+ __entry->sector = bio->bi_sector;
+ __entry->nr_sector = bio->bi_size >> 9;
+ blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+);
+
+/**
+ * block_bio_complete - completed all work on the block operation
+ * @q: queue holding the block operation
+ * @bio: block operation completed
+ * @error: io error value
+ *
+ * This tracepoint indicates there is no further work to do on this
+ * block IO operation @bio.
+ */
+TRACE_EVENT(block_bio_complete,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int error),
+
+ TP_ARGS(q, bio, error),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned, nr_sector )
+ __field( int, error )
+ __array( char, rwbs, 6 )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio->bi_bdev->bd_dev;
+ __entry->sector = bio->bi_sector;
+ __entry->nr_sector = bio->bi_size >> 9;
+ __entry->error = error;
+ blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%d]",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->error)
+);
+
+DECLARE_EVENT_CLASS(block_bio,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __array( char, rwbs, 6 )
+ __array( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio->bi_bdev->bd_dev;
+ __entry->sector = bio->bi_sector;
+ __entry->nr_sector = bio->bi_size >> 9;
+ blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+);
+
+/**
+ * block_bio_backmerge - merging block operation to the end of an existing operation
+ * @q: queue holding operation
+ * @bio: new block operation to merge
+ *
+ * Merging block request @bio to the end of an existing block request
+ * in queue @q.
+ */
+DEFINE_EVENT(block_bio, block_bio_backmerge,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio)
+);
+
+/**
+ * block_bio_frontmerge - merging block operation to the beginning of an existing operation
+ * @q: queue holding operation
+ * @bio: new block operation to merge
+ *
+ * Merging block IO operation @bio to the beginning of an existing block
+ * operation in queue @q.
+ */
+DEFINE_EVENT(block_bio, block_bio_frontmerge,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio)
+);
+
+/**
+ * block_bio_queue - putting new block IO operation in queue
+ * @q: queue holding operation
+ * @bio: new block operation
+ *
+ * About to place the block IO operation @bio into queue @q.
+ */
+DEFINE_EVENT(block_bio, block_bio_queue,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio),
+
+ TP_ARGS(q, bio)
+);
+
+DECLARE_EVENT_CLASS(block_get_rq,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
+
+ TP_ARGS(q, bio, rw),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __array( char, rwbs, 6 )
+ __array( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
+ __entry->sector = bio ? bio->bi_sector : 0;
+ __entry->nr_sector = bio ? bio->bi_size >> 9 : 0;
+ blk_fill_rwbs(__entry->rwbs,
+ bio ? bio->bi_rw : 0, __entry->nr_sector);
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("%d,%d %s %llu + %u [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector, __entry->comm)
+);
+
+/**
+ * block_getrq - get a free request entry in queue for block IO operations
+ * @q: queue for operations
+ * @bio: pending block IO operation
+ * @rw: low bit indicates a read (%0) or a write (%1)
+ *
+ * A request struct for queue @q has been allocated to handle the
+ * block IO operation @bio.
+ */
+DEFINE_EVENT(block_get_rq, block_getrq,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
+
+ TP_ARGS(q, bio, rw)
+);
+
+/**
+ * block_sleeprq - waiting to get a free request entry in queue for block IO operation
+ * @q: queue for operation
+ * @bio: pending block IO operation
+ * @rw: low bit indicates a read (%0) or a write (%1)
+ *
+ * In the case where a request struct cannot be provided for queue @q
+ * the process needs to wait for an request struct to become
+ * available. This tracepoint event is generated each time the
+ * process goes to sleep waiting for request struct become available.
+ */
+DEFINE_EVENT(block_get_rq, block_sleeprq,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
+
+ TP_ARGS(q, bio, rw)
+);
+
+/**
+ * block_plug - keep operations requests in request queue
+ * @q: request queue to plug
+ *
+ * Plug the request queue @q. Do not allow block operation requests
+ * to be sent to the device driver. Instead, accumulate requests in
+ * the queue to improve throughput performance of the block device.
+ */
+TRACE_EVENT(block_plug,
+
+ TP_PROTO(struct request_queue *q),
+
+ TP_ARGS(q),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("[%s]", __entry->comm)
+);
+
+DECLARE_EVENT_CLASS(block_unplug,
+
+ TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
+
+ TP_ARGS(q, depth, explicit),
+
+ TP_STRUCT__entry(
+ __field( int, nr_rq )
+ __array( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ __entry->nr_rq = depth;
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
+);
+
+/**
+ * block_unplug - release of operations requests in request queue
+ * @q: request queue to unplug
+ * @depth: number of requests just added to the queue
+ * @explicit: whether this was an explicit unplug, or one from schedule()
+ *
+ * Unplug request queue @q because device driver is scheduled to work
+ * on elements in the request queue.
+ */
+DEFINE_EVENT(block_unplug, block_unplug,
+
+ TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
+
+ TP_ARGS(q, depth, explicit)
+);
+
+/**
+ * block_split - split a single bio struct into two bio structs
+ * @q: queue containing the bio
+ * @bio: block operation being split
+ * @new_sector: The starting sector for the new bio
+ *
+ * The bio request @bio in request queue @q needs to be split into two
+ * bio requests. The newly created @bio request starts at
+ * @new_sector. This split may be required due to hardware limitation
+ * such as operation crossing device boundaries in a RAID system.
+ */
+TRACE_EVENT(block_split,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio,
+ unsigned int new_sector),
+
+ TP_ARGS(q, bio, new_sector),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( sector_t, new_sector )
+ __array( char, rwbs, 6 )
+ __array( char, comm, TASK_COMM_LEN )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio->bi_bdev->bd_dev;
+ __entry->sector = bio->bi_sector;
+ __entry->new_sector = new_sector;
+ blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ ),
+
+ TP_printk("%d,%d %s %llu / %llu [%s]",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ (unsigned long long)__entry->new_sector,
+ __entry->comm)
+);
+
+/**
+ * block_bio_remap - map request for a logical device to the raw device
+ * @q: queue holding the operation
+ * @bio: revised operation
+ * @dev: device for the operation
+ * @from: original sector for the operation
+ *
+ * An operation for a logical device has been mapped to the
+ * raw block device.
+ */
+TRACE_EVENT(block_bio_remap,
+
+ TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
+ sector_t from),
+
+ TP_ARGS(q, bio, dev, from),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( dev_t, old_dev )
+ __field( sector_t, old_sector )
+ __array( char, rwbs, 6 )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = bio->bi_bdev->bd_dev;
+ __entry->sector = bio->bi_sector;
+ __entry->nr_sector = bio->bi_size >> 9;
+ __entry->old_dev = dev;
+ __entry->old_sector = from;
+ blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
+ ),
+
+ TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector,
+ MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
+ (unsigned long long)__entry->old_sector)
+);
+
+/**
+ * block_rq_remap - map request for a block operation request
+ * @q: queue holding the operation
+ * @rq: block IO operation request
+ * @dev: device for the operation
+ * @from: original sector for the operation
+ *
+ * The block operation request @rq in @q has been remapped. The block
+ * operation request @rq holds the current information and @from hold
+ * the original sector.
+ */
+TRACE_EVENT(block_rq_remap,
+
+ TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
+ sector_t from),
+
+ TP_ARGS(q, rq, dev, from),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( sector_t, sector )
+ __field( unsigned int, nr_sector )
+ __field( dev_t, old_dev )
+ __field( sector_t, old_sector )
+ __array( char, rwbs, 6 )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = disk_devt(rq->rq_disk);
+ __entry->sector = blk_rq_pos(rq);
+ __entry->nr_sector = blk_rq_sectors(rq);
+ __entry->old_dev = dev;
+ __entry->old_sector = from;
+ blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ ),
+
+ TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
+ MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
+ (unsigned long long)__entry->sector,
+ __entry->nr_sector,
+ MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
+ (unsigned long long)__entry->old_sector)
+);
+
+#endif /* _TRACE_BLOCK_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
+
diff --git a/drivers/staging/lttng/instrumentation/events/mainline/irq.h b/drivers/staging/lttng/instrumentation/events/mainline/irq.h
new file mode 100644
index 0000000..1c09820
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/mainline/irq.h
@@ -0,0 +1,150 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM irq
+
+#if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_IRQ_H
+
+#include <linux/tracepoint.h>
+
+struct irqaction;
+struct softirq_action;
+
+#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
+#define show_softirq_name(val) \
+ __print_symbolic(val, \
+ softirq_name(HI), \
+ softirq_name(TIMER), \
+ softirq_name(NET_TX), \
+ softirq_name(NET_RX), \
+ softirq_name(BLOCK), \
+ softirq_name(BLOCK_IOPOLL), \
+ softirq_name(TASKLET), \
+ softirq_name(SCHED), \
+ softirq_name(HRTIMER), \
+ softirq_name(RCU))
+
+/**
+ * irq_handler_entry - called immediately before the irq action handler
+ * @irq: irq number
+ * @action: pointer to struct irqaction
+ *
+ * The struct irqaction pointed to by @action contains various
+ * information about the handler, including the device name,
+ * @action->name, and the device id, @action->dev_id. When used in
+ * conjunction with the irq_handler_exit tracepoint, we can figure
+ * out irq handler latencies.
+ */
+TRACE_EVENT(irq_handler_entry,
+
+ TP_PROTO(int irq, struct irqaction *action),
+
+ TP_ARGS(irq, action),
+
+ TP_STRUCT__entry(
+ __field( int, irq )
+ __string( name, action->name )
+ ),
+
+ TP_fast_assign(
+ __entry->irq = irq;
+ __assign_str(name, action->name);
+ ),
+
+ TP_printk("irq=%d name=%s", __entry->irq, __get_str(name))
+);
+
+/**
+ * irq_handler_exit - called immediately after the irq action handler returns
+ * @irq: irq number
+ * @action: pointer to struct irqaction
+ * @ret: return value
+ *
+ * If the @ret value is set to IRQ_HANDLED, then we know that the corresponding
+ * @action->handler scuccessully handled this irq. Otherwise, the irq might be
+ * a shared irq line, or the irq was not handled successfully. Can be used in
+ * conjunction with the irq_handler_entry to understand irq handler latencies.
+ */
+TRACE_EVENT(irq_handler_exit,
+
+ TP_PROTO(int irq, struct irqaction *action, int ret),
+
+ TP_ARGS(irq, action, ret),
+
+ TP_STRUCT__entry(
+ __field( int, irq )
+ __field( int, ret )
+ ),
+
+ TP_fast_assign(
+ __entry->irq = irq;
+ __entry->ret = ret;
+ ),
+
+ TP_printk("irq=%d ret=%s",
+ __entry->irq, __entry->ret ? "handled" : "unhandled")
+);
+
+DECLARE_EVENT_CLASS(softirq,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, vec )
+ ),
+
+ TP_fast_assign(
+ __entry->vec = vec_nr;
+ ),
+
+ TP_printk("vec=%u [action=%s]", __entry->vec,
+ show_softirq_name(__entry->vec))
+);
+
+/**
+ * softirq_entry - called immediately before the softirq handler
+ * @vec_nr: softirq vector number
+ *
+ * When used in combination with the softirq_exit tracepoint
+ * we can determine the softirq handler runtine.
+ */
+DEFINE_EVENT(softirq, softirq_entry,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr)
+);
+
+/**
+ * softirq_exit - called immediately after the softirq handler returns
+ * @vec_nr: softirq vector number
+ *
+ * When used in combination with the softirq_entry tracepoint
+ * we can determine the softirq handler runtine.
+ */
+DEFINE_EVENT(softirq, softirq_exit,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr)
+);
+
+/**
+ * softirq_raise - called immediately when a softirq is raised
+ * @vec_nr: softirq vector number
+ *
+ * When used in combination with the softirq_entry tracepoint
+ * we can determine the softirq raise to run latency.
+ */
+DEFINE_EVENT(softirq, softirq_raise,
+
+ TP_PROTO(unsigned int vec_nr),
+
+ TP_ARGS(vec_nr)
+);
+
+#endif /* _TRACE_IRQ_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/drivers/staging/lttng/instrumentation/events/mainline/kvm.h b/drivers/staging/lttng/instrumentation/events/mainline/kvm.h
new file mode 100644
index 0000000..46e3cd8
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/mainline/kvm.h
@@ -0,0 +1,312 @@
+#if !defined(_TRACE_KVM_MAIN_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KVM_MAIN_H
+
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kvm
+
+#define ERSN(x) { KVM_EXIT_##x, "KVM_EXIT_" #x }
+
+#define kvm_trace_exit_reason \
+ ERSN(UNKNOWN), ERSN(EXCEPTION), ERSN(IO), ERSN(HYPERCALL), \
+ ERSN(DEBUG), ERSN(HLT), ERSN(MMIO), ERSN(IRQ_WINDOW_OPEN), \
+ ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR), \
+ ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\
+ ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI)
+
+TRACE_EVENT(kvm_userspace_exit,
+ TP_PROTO(__u32 reason, int errno),
+ TP_ARGS(reason, errno),
+
+ TP_STRUCT__entry(
+ __field( __u32, reason )
+ __field( int, errno )
+ ),
+
+ TP_fast_assign(
+ __entry->reason = reason;
+ __entry->errno = errno;
+ ),
+
+ TP_printk("reason %s (%d)",
+ __entry->errno < 0 ?
+ (__entry->errno == -EINTR ? "restart" : "error") :
+ __print_symbolic(__entry->reason, kvm_trace_exit_reason),
+ __entry->errno < 0 ? -__entry->errno : __entry->reason)
+);
+
+#if defined(__KVM_HAVE_IOAPIC)
+TRACE_EVENT(kvm_set_irq,
+ TP_PROTO(unsigned int gsi, int level, int irq_source_id),
+ TP_ARGS(gsi, level, irq_source_id),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, gsi )
+ __field( int, level )
+ __field( int, irq_source_id )
+ ),
+
+ TP_fast_assign(
+ __entry->gsi = gsi;
+ __entry->level = level;
+ __entry->irq_source_id = irq_source_id;
+ ),
+
+ TP_printk("gsi %u level %d source %d",
+ __entry->gsi, __entry->level, __entry->irq_source_id)
+);
+
+#define kvm_deliver_mode \
+ {0x0, "Fixed"}, \
+ {0x1, "LowPrio"}, \
+ {0x2, "SMI"}, \
+ {0x3, "Res3"}, \
+ {0x4, "NMI"}, \
+ {0x5, "INIT"}, \
+ {0x6, "SIPI"}, \
+ {0x7, "ExtINT"}
+
+TRACE_EVENT(kvm_ioapic_set_irq,
+ TP_PROTO(__u64 e, int pin, bool coalesced),
+ TP_ARGS(e, pin, coalesced),
+
+ TP_STRUCT__entry(
+ __field( __u64, e )
+ __field( int, pin )
+ __field( bool, coalesced )
+ ),
+
+ TP_fast_assign(
+ __entry->e = e;
+ __entry->pin = pin;
+ __entry->coalesced = coalesced;
+ ),
+
+ TP_printk("pin %u dst %x vec=%u (%s|%s|%s%s)%s",
+ __entry->pin, (u8)(__entry->e >> 56), (u8)__entry->e,
+ __print_symbolic((__entry->e >> 8 & 0x7), kvm_deliver_mode),
+ (__entry->e & (1<<11)) ? "logical" : "physical",
+ (__entry->e & (1<<15)) ? "level" : "edge",
+ (__entry->e & (1<<16)) ? "|masked" : "",
+ __entry->coalesced ? " (coalesced)" : "")
+);
+
+TRACE_EVENT(kvm_msi_set_irq,
+ TP_PROTO(__u64 address, __u64 data),
+ TP_ARGS(address, data),
+
+ TP_STRUCT__entry(
+ __field( __u64, address )
+ __field( __u64, data )
+ ),
+
+ TP_fast_assign(
+ __entry->address = address;
+ __entry->data = data;
+ ),
+
+ TP_printk("dst %u vec %x (%s|%s|%s%s)",
+ (u8)(__entry->address >> 12), (u8)__entry->data,
+ __print_symbolic((__entry->data >> 8 & 0x7), kvm_deliver_mode),
+ (__entry->address & (1<<2)) ? "logical" : "physical",
+ (__entry->data & (1<<15)) ? "level" : "edge",
+ (__entry->address & (1<<3)) ? "|rh" : "")
+);
+
+#define kvm_irqchips \
+ {KVM_IRQCHIP_PIC_MASTER, "PIC master"}, \
+ {KVM_IRQCHIP_PIC_SLAVE, "PIC slave"}, \
+ {KVM_IRQCHIP_IOAPIC, "IOAPIC"}
+
+TRACE_EVENT(kvm_ack_irq,
+ TP_PROTO(unsigned int irqchip, unsigned int pin),
+ TP_ARGS(irqchip, pin),
+
+ TP_STRUCT__entry(
+ __field( unsigned int, irqchip )
+ __field( unsigned int, pin )
+ ),
+
+ TP_fast_assign(
+ __entry->irqchip = irqchip;
+ __entry->pin = pin;
+ ),
+
+ TP_printk("irqchip %s pin %u",
+ __print_symbolic(__entry->irqchip, kvm_irqchips),
+ __entry->pin)
+);
+
+
+
+#endif /* defined(__KVM_HAVE_IOAPIC) */
+
+#define KVM_TRACE_MMIO_READ_UNSATISFIED 0
+#define KVM_TRACE_MMIO_READ 1
+#define KVM_TRACE_MMIO_WRITE 2
+
+#define kvm_trace_symbol_mmio \
+ { KVM_TRACE_MMIO_READ_UNSATISFIED, "unsatisfied-read" }, \
+ { KVM_TRACE_MMIO_READ, "read" }, \
+ { KVM_TRACE_MMIO_WRITE, "write" }
+
+TRACE_EVENT(kvm_mmio,
+ TP_PROTO(int type, int len, u64 gpa, u64 val),
+ TP_ARGS(type, len, gpa, val),
+
+ TP_STRUCT__entry(
+ __field( u32, type )
+ __field( u32, len )
+ __field( u64, gpa )
+ __field( u64, val )
+ ),
+
+ TP_fast_assign(
+ __entry->type = type;
+ __entry->len = len;
+ __entry->gpa = gpa;
+ __entry->val = val;
+ ),
+
+ TP_printk("mmio %s len %u gpa 0x%llx val 0x%llx",
+ __print_symbolic(__entry->type, kvm_trace_symbol_mmio),
+ __entry->len, __entry->gpa, __entry->val)
+);
+
+#define kvm_fpu_load_symbol \
+ {0, "unload"}, \
+ {1, "load"}
+
+TRACE_EVENT(kvm_fpu,
+ TP_PROTO(int load),
+ TP_ARGS(load),
+
+ TP_STRUCT__entry(
+ __field( u32, load )
+ ),
+
+ TP_fast_assign(
+ __entry->load = load;
+ ),
+
+ TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol))
+);
+
+TRACE_EVENT(kvm_age_page,
+ TP_PROTO(ulong hva, struct kvm_memory_slot *slot, int ref),
+ TP_ARGS(hva, slot, ref),
+
+ TP_STRUCT__entry(
+ __field( u64, hva )
+ __field( u64, gfn )
+ __field( u8, referenced )
+ ),
+
+ TP_fast_assign(
+ __entry->hva = hva;
+ __entry->gfn =
+ slot->base_gfn + ((hva - slot->userspace_addr) >> PAGE_SHIFT);
+ __entry->referenced = ref;
+ ),
+
+ TP_printk("hva %llx gfn %llx %s",
+ __entry->hva, __entry->gfn,
+ __entry->referenced ? "YOUNG" : "OLD")
+);
+
+#ifdef CONFIG_KVM_ASYNC_PF
+DECLARE_EVENT_CLASS(kvm_async_get_page_class,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn),
+
+ TP_STRUCT__entry(
+ __field(__u64, gva)
+ __field(u64, gfn)
+ ),
+
+ TP_fast_assign(
+ __entry->gva = gva;
+ __entry->gfn = gfn;
+ ),
+
+ TP_printk("gva = %#llx, gfn = %#llx", __entry->gva, __entry->gfn)
+);
+
+DEFINE_EVENT(kvm_async_get_page_class, kvm_try_async_get_page,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn)
+);
+
+DEFINE_EVENT(kvm_async_get_page_class, kvm_async_pf_doublefault,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn)
+);
+
+DECLARE_EVENT_CLASS(kvm_async_pf_nopresent_ready,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva),
+
+ TP_STRUCT__entry(
+ __field(__u64, token)
+ __field(__u64, gva)
+ ),
+
+ TP_fast_assign(
+ __entry->token = token;
+ __entry->gva = gva;
+ ),
+
+ TP_printk("token %#llx gva %#llx", __entry->token, __entry->gva)
+
+);
+
+DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_not_present,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva)
+);
+
+DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_ready,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva)
+);
+
+TRACE_EVENT(
+ kvm_async_pf_completed,
+ TP_PROTO(unsigned long address, struct page *page, u64 gva),
+ TP_ARGS(address, page, gva),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, address)
+ __field(pfn_t, pfn)
+ __field(u64, gva)
+ ),
+
+ TP_fast_assign(
+ __entry->address = address;
+ __entry->pfn = page ? page_to_pfn(page) : 0;
+ __entry->gva = gva;
+ ),
+
+ TP_printk("gva %#llx address %#lx pfn %#llx", __entry->gva,
+ __entry->address, __entry->pfn)
+);
+
+#endif
+
+#endif /* _TRACE_KVM_MAIN_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/drivers/staging/lttng/instrumentation/events/mainline/sched.h b/drivers/staging/lttng/instrumentation/events/mainline/sched.h
new file mode 100644
index 0000000..f633478
--- /dev/null
+++ b/drivers/staging/lttng/instrumentation/events/mainline/sched.h
@@ -0,0 +1,397 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sched
+
+#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SCHED_H
+
+#include <linux/sched.h>
+#include <linux/tracepoint.h>
+
+/*
+ * Tracepoint for calling kthread_stop, performed to end a kthread:
+ */
+TRACE_EVENT(sched_kthread_stop,
+
+ TP_PROTO(struct task_struct *t),
+
+ TP_ARGS(t),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
+ __entry->pid = t->pid;
+ ),
+
+ TP_printk("comm=%s pid=%d", __entry->comm, __entry->pid)
+);
+
+/*
+ * Tracepoint for the return value of the kthread stopping:
+ */
+TRACE_EVENT(sched_kthread_stop_ret,
+
+ TP_PROTO(int ret),
+
+ TP_ARGS(ret),
+
+ TP_STRUCT__entry(
+ __field( int, ret )
+ ),
+
+ TP_fast_assign(
+ __entry->ret = ret;
+ ),
+
+ TP_printk("ret=%d", __entry->ret)
+);
+
+/*
+ * Tracepoint for waking up a task:
+ */
+DECLARE_EVENT_CLASS(sched_wakeup_template,
+
+ TP_PROTO(struct task_struct *p, int success),
+
+ TP_ARGS(p, success),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( int, prio )
+ __field( int, success )
+ __field( int, target_cpu )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+ __entry->pid = p->pid;
+ __entry->prio = p->prio;
+ __entry->success = success;
+ __entry->target_cpu = task_cpu(p);
+ ),
+
+ TP_printk("comm=%s pid=%d prio=%d success=%d target_cpu=%03d",
+ __entry->comm, __entry->pid, __entry->prio,
+ __entry->success, __entry->target_cpu)
+);
+
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup,
+ TP_PROTO(struct task_struct *p, int success),
+ TP_ARGS(p, success));
+
+/*
+ * Tracepoint for waking up a new task:
+ */
+DEFINE_EVENT(sched_wakeup_template, sched_wakeup_new,
+ TP_PROTO(struct task_struct *p, int success),
+ TP_ARGS(p, success));
+
+#ifdef CREATE_TRACE_POINTS
+static inline long __trace_sched_switch_state(struct task_struct *p)
+{
+ long state = p->state;
+
+#ifdef CONFIG_PREEMPT
+ /*
+ * For all intents and purposes a preempted task is a running task.
+ */
+ if (task_thread_info(p)->preempt_count & PREEMPT_ACTIVE)
+ state = TASK_RUNNING;
+#endif
+
+ return state;
+}
+#endif
+
+/*
+ * Tracepoint for task switches, performed by the scheduler:
+ */
+TRACE_EVENT(sched_switch,
+
+ TP_PROTO(struct task_struct *prev,
+ struct task_struct *next),
+
+ TP_ARGS(prev, next),
+
+ TP_STRUCT__entry(
+ __array( char, prev_comm, TASK_COMM_LEN )
+ __field( pid_t, prev_pid )
+ __field( int, prev_prio )
+ __field( long, prev_state )
+ __array( char, next_comm, TASK_COMM_LEN )
+ __field( pid_t, next_pid )
+ __field( int, next_prio )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
+ __entry->prev_pid = prev->pid;
+ __entry->prev_prio = prev->prio;
+ __entry->prev_state = __trace_sched_switch_state(prev);
+ memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
+ __entry->next_pid = next->pid;
+ __entry->next_prio = next->prio;
+ ),
+
+ TP_printk("prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s ==> next_comm=%s next_pid=%d next_prio=%d",
+ __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
+ __entry->prev_state ?
+ __print_flags(__entry->prev_state, "|",
+ { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
+ { 16, "Z" }, { 32, "X" }, { 64, "x" },
+ { 128, "W" }) : "R",
+ __entry->next_comm, __entry->next_pid, __entry->next_prio)
+);
+
+/*
+ * Tracepoint for a task being migrated:
+ */
+TRACE_EVENT(sched_migrate_task,
+
+ TP_PROTO(struct task_struct *p, int dest_cpu),
+
+ TP_ARGS(p, dest_cpu),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( int, prio )
+ __field( int, orig_cpu )
+ __field( int, dest_cpu )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+ __entry->pid = p->pid;
+ __entry->prio = p->prio;
+ __entry->orig_cpu = task_cpu(p);
+ __entry->dest_cpu = dest_cpu;
+ ),
+
+ TP_printk("comm=%s pid=%d prio=%d orig_cpu=%d dest_cpu=%d",
+ __entry->comm, __entry->pid, __entry->prio,
+ __entry->orig_cpu, __entry->dest_cpu)
+);
+
+DECLARE_EVENT_CLASS(sched_process_template,
+
+ TP_PROTO(struct task_struct *p),
+
+ TP_ARGS(p),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( int, prio )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+ __entry->pid = p->pid;
+ __entry->prio = p->prio;
+ ),
+
+ TP_printk("comm=%s pid=%d prio=%d",
+ __entry->comm, __entry->pid, __entry->prio)
+);
+
+/*
+ * Tracepoint for freeing a task:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_free,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p));
+
+
+/*
+ * Tracepoint for a task exiting:
+ */
+DEFINE_EVENT(sched_process_template, sched_process_exit,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p));
+
+/*
+ * Tracepoint for waiting on task to unschedule:
+ */
+DEFINE_EVENT(sched_process_template, sched_wait_task,
+ TP_PROTO(struct task_struct *p),
+ TP_ARGS(p));
+
+/*
+ * Tracepoint for a waiting task:
+ */
+TRACE_EVENT(sched_process_wait,
+
+ TP_PROTO(struct pid *pid),
+
+ TP_ARGS(pid),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( int, prio )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
+ __entry->pid = pid_nr(pid);
+ __entry->prio = current->prio;
+ ),
+
+ TP_printk("comm=%s pid=%d prio=%d",
+ __entry->comm, __entry->pid, __entry->prio)
+);
+
+/*
+ * Tracepoint for do_fork:
+ */
+TRACE_EVENT(sched_process_fork,
+
+ TP_PROTO(struct task_struct *parent, struct task_struct *child),
+
+ TP_ARGS(parent, child),
+
+ TP_STRUCT__entry(
+ __array( char, parent_comm, TASK_COMM_LEN )
+ __field( pid_t, parent_pid )
+ __array( char, child_comm, TASK_COMM_LEN )
+ __field( pid_t, child_pid )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
+ __entry->parent_pid = parent->pid;
+ memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
+ __entry->child_pid = child->pid;
+ ),
+
+ TP_printk("comm=%s pid=%d child_comm=%s child_pid=%d",
+ __entry->parent_comm, __entry->parent_pid,
+ __entry->child_comm, __entry->child_pid)
+);
+
+/*
+ * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
+ * adding sched_stat support to SCHED_FIFO/RR would be welcome.