fix: block: simplify and extend the block_bio_merge tracepoint class (v5.11)
[lttng-modules.git] / include / instrumentation / events / block.h
index ba51fe2c3737cb1d6f2f0d06eee1abfb7715bb43..d0d69672d29632b5cca9e66860eb85e2b03fa156 100644 (file)
@@ -266,6 +266,31 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_abort,
 )
 #endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_rq_requeue - place block IO request back on a queue
+ * @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.
+ */
+LTTNG_TRACEPOINT_EVENT(block_rq_requeue,
+
+       TP_PROTO(struct request *rq),
+
+       TP_ARGS(rq),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev,
+                       rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
+               ctf_integer(sector_t, sector, blk_rq_trace_sector(rq))
+               ctf_integer(unsigned int, nr_sector, blk_rq_trace_nr_sectors(rq))
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq))
+       )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0))
 /**
  * block_rq_requeue - place block IO request back on a queue
  * @q: queue holding operation
@@ -275,7 +300,6 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_abort,
  * @q.  For some reason the request was not completed and needs to be
  * put back in the queue.
  */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0))
 LTTNG_TRACEPOINT_EVENT(block_rq_requeue,
 
        TP_PROTO(struct request_queue *q, struct request *rq),
@@ -434,7 +458,26 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq_with_error, block_rq_complete,
 
 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+LTTNG_TRACEPOINT_EVENT_CLASS(block_rq,
+
+       TP_PROTO(struct request *rq),
+
+       TP_ARGS(rq),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev,
+                       rq->rq_disk ? disk_devt(rq->rq_disk) : 0)
+               ctf_integer(sector_t, sector, blk_rq_trace_sector(rq))
+               ctf_integer(unsigned int, nr_sector, blk_rq_trace_nr_sectors(rq))
+               ctf_integer(unsigned int, bytes, blk_rq_bytes(rq))
+               ctf_integer(pid_t, tid, current->pid)
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq))
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,12,0))
 LTTNG_TRACEPOINT_EVENT_CLASS(block_rq,
 
        TP_PROTO(struct request_queue *q, struct request *rq),
@@ -550,6 +593,23 @@ LTTNG_TRACEPOINT_EVENT_CLASS_CODE(block_rq,
 )
 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_rq_insert - insert block operation request into 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.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_insert,
+
+       TP_PROTO(struct request *rq),
+
+       TP_ARGS(rq)
+)
+#else
 /**
  * block_rq_insert - insert block operation request into queue
  * @q: target queue
@@ -566,7 +626,23 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_insert,
 
        TP_ARGS(q, rq)
 )
+#endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_rq_issue - issue pending block IO request operation to device driver
+ * @rq: block IO operation operation request
+ *
+ * Called when block operation request @rq from queue @q is sent to a
+ * device driver for processing.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_issue,
+
+       TP_PROTO(struct request *rq),
+
+       TP_ARGS(rq)
+)
+#else
 /**
  * block_rq_issue - issue pending block IO request operation to device driver
  * @q: queue holding operation
@@ -581,48 +657,38 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_issue,
 
        TP_ARGS(q, rq)
 )
+#endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
 /**
- * block_bio_bounce - used bounce buffer when processing block operation
- * @q: queue holding the block operation
- * @bio: block operation
+ * block_rq_merge - merge request with another one in the elevator
+ * @rq: block IO operation operation request
  *
- * 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.
+ * Called when block operation request @rq from queue @q is merged to another
+ * request queued in the elevator.
  */
-LTTNG_TRACEPOINT_EVENT(block_bio_bounce,
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_merge,
 
-       TP_PROTO(struct request_queue *q, struct bio *bio),
+       TP_PROTO(struct request *rq),
 
-       TP_ARGS(q, bio),
-
-       TP_FIELDS(
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
-               ctf_integer(dev_t, dev, bio_dev(bio))
-#else
-               ctf_integer(dev_t, dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
-#endif
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
-               ctf_integer(sector_t, sector, bio->bi_iter.bi_sector)
-               ctf_integer(unsigned int, nr_sector, bio_sectors(bio))
-               blk_rwbs_ctf_integer(unsigned int, rwbs,
-                       lttng_bio_op(bio), lttng_bio_rw(bio),
-                       bio->bi_iter.bi_size)
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
-               ctf_integer(sector_t, sector, bio->bi_sector)
-               ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9)
-               blk_rwbs_ctf_integer(unsigned int, rwbs,
-                       lttng_bio_op(bio), lttng_bio_rw(bio),
-                       bio->bi_size)
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
-               ctf_integer(pid_t, tid, current->pid)
-               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
-       )
+       TP_ARGS(rq)
 )
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(5,9,0))
+/**
+ * block_rq_merge - merge request with another one in the elevator
+ * @q: queue holding operation
+ * @rq: block IO operation operation request
+ *
+ * Called when block operation request @rq from queue @q is merged to another
+ * request queued in the elevator.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_rq, block_rq_merge,
 
+       TP_PROTO(struct request_queue *q, struct request *rq),
+
+       TP_ARGS(q, rq)
+)
+#endif
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
 /**
@@ -729,7 +795,25 @@ LTTNG_TRACEPOINT_EVENT(block_bio_complete,
 )
 #endif
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+LTTNG_TRACEPOINT_EVENT_CLASS(block_bio,
+
+       TP_PROTO(struct bio *bio),
+
+       TP_ARGS(bio),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev, bio_dev(bio))
+               ctf_integer(sector_t, sector, bio->bi_iter.bi_sector)
+               ctf_integer(unsigned int, nr_sector, bio_sectors(bio))
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_bio_op(bio), lttng_bio_rw(bio),
+                       bio->bi_iter.bi_size)
+               ctf_integer(pid_t, tid, current->pid)
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
 LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge,
 
        TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
@@ -737,31 +821,184 @@ LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge,
        TP_ARGS(q, rq, bio),
 
        TP_FIELDS(
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
                ctf_integer(dev_t, dev, bio_dev(bio))
-#else
+               ctf_integer(sector_t, sector, bio->bi_iter.bi_sector)
+               ctf_integer(unsigned int, nr_sector, bio_sectors(bio))
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_bio_op(bio), lttng_bio_rw(bio),
+                       bio->bi_iter.bi_size)
+               ctf_integer(pid_t, tid, current->pid)
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
+LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge,
+
+       TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
+
+       TP_ARGS(q, rq, bio),
+
+       TP_FIELDS(
                ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev)
-#endif
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
                ctf_integer(sector_t, sector, bio->bi_iter.bi_sector)
                ctf_integer(unsigned int, nr_sector, bio_sectors(bio))
                blk_rwbs_ctf_integer(unsigned int, rwbs,
                        lttng_bio_op(bio), lttng_bio_rw(bio),
                        bio->bi_iter.bi_size)
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
+               ctf_integer(pid_t, tid, current->pid)
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+LTTNG_TRACEPOINT_EVENT_CLASS(block_bio_merge,
+
+       TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
+
+       TP_ARGS(q, rq, bio),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev, bio->bi_bdev->bd_dev)
                ctf_integer(sector_t, sector, bio->bi_sector)
                ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9)
                blk_rwbs_ctf_integer(unsigned int, rwbs,
                        lttng_bio_op(bio), lttng_bio_rw(bio), bio->bi_size)
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)) */
                ctf_integer(pid_t, tid, current->pid)
                ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
        )
 )
+#endif
+
+
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_bio_bounce - used bounce buffer when processing 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.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_bounce,
+
+       TP_PROTO(struct bio *bio),
 
+       TP_ARGS(bio)
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
+/**
+ * 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.
+ */
+LTTNG_TRACEPOINT_EVENT(block_bio_bounce,
+
+       TP_PROTO(struct request_queue *q, struct bio *bio),
+
+       TP_ARGS(q, bio),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev, bio_dev(bio))
+               ctf_integer(sector_t, sector, bio->bi_iter.bi_sector)
+               ctf_integer(unsigned int, nr_sector, bio_sectors(bio))
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_bio_op(bio), lttng_bio_rw(bio),
+                       bio->bi_iter.bi_size)
+               ctf_integer(pid_t, tid, current->pid)
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0))
+LTTNG_TRACEPOINT_EVENT(block_bio_bounce,
+
+       TP_PROTO(struct request_queue *q, struct bio *bio),
+
+       TP_ARGS(q, bio),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
+               ctf_integer(sector_t, sector, bio->bi_iter.bi_sector)
+               ctf_integer(unsigned int, nr_sector, bio_sectors(bio))
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_bio_op(bio), lttng_bio_rw(bio),
+                       bio->bi_iter.bi_size)
+               ctf_integer(pid_t, tid, current->pid)
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(block_bio_bounce,
+
+       TP_PROTO(struct request_queue *q, struct bio *bio),
+
+       TP_ARGS(q, bio),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
+               ctf_integer(sector_t, sector, bio->bi_sector)
+               ctf_integer(unsigned int, nr_sector, bio->bi_size >> 9)
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_bio_op(bio), lttng_bio_rw(bio),
+                       bio->bi_size)
+               ctf_integer(pid_t, tid, current->pid)
+               ctf_array_text(char, comm, current->comm, TASK_COMM_LEN)
+       )
+)
+#endif
+
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_bio_backmerge - merging block operation to the end of an existing operation
+ * @bio: new block operation to merge
+ *
+ * Merging block request @bio to the end of an existing block request.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_backmerge,
+
+       TP_PROTO(struct bio *bio),
+
+       TP_ARGS(bio)
+)
+
+/**
+ * block_bio_frontmerge - merging block operation to the beginning of an existing operation
+ * @bio: new block operation to merge
+ *
+ * Merging block IO operation @bio to the beginning of an existing block request.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_frontmerge,
+
+       TP_PROTO(struct bio *bio),
+
+       TP_ARGS(bio)
+)
+
+/**
+ * block_bio_queue - putting new block IO operation in queue
+ * @bio: new block operation
+ *
+ * About to place the block IO operation @bio into queue @q.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_queue,
+
+       TP_PROTO(struct bio *bio),
+
+       TP_ARGS(bio)
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
 /**
  * block_bio_backmerge - merging block operation to the end of an existing operation
  * @q: queue holding operation
+ * @rq: request bio is being merged into
  * @bio: new block operation to merge
  *
  * Merging block request @bio to the end of an existing block request
@@ -777,6 +1014,7 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio_merge, block_bio_backmerge,
 /**
  * block_bio_frontmerge - merging block operation to the beginning of an existing operation
  * @q: queue holding operation
+ * @rq: request bio is being merged into
  * @bio: new block operation to merge
  *
  * Merging block IO operation @bio to the beginning of an existing block
@@ -887,6 +1125,20 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_bio_queue,
 )
 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)) */
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_getrq - get a free request entry in queue for block IO operations
+ * @bio: pending block IO operation (can be %NULL)
+ *
+ * A request struct has been allocated to handle the block IO operation @bio.
+ */
+LTTNG_TRACEPOINT_EVENT_INSTANCE(block_bio, block_getrq,
+
+       TP_PROTO(struct bio *bio),
+
+       TP_ARGS(bio)
+)
+#else
 LTTNG_TRACEPOINT_EVENT_CLASS(block_get_rq,
 
        TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
@@ -954,6 +1206,7 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(block_get_rq, block_sleeprq,
 
        TP_ARGS(q, bio, rw)
 )
+#endif
 
 /**
  * block_plug - keep operations requests in request queue
@@ -1084,6 +1337,34 @@ LTTNG_TRACEPOINT_EVENT(block_bio_remap,
        )
 )
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0))
+/**
+ * block_rq_remap - map request for a block operation request
+ * @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.
+ */
+LTTNG_TRACEPOINT_EVENT(block_rq_remap,
+
+       TP_PROTO(struct request *rq, dev_t dev, sector_t from),
+
+       TP_ARGS(rq, dev, from),
+
+       TP_FIELDS(
+               ctf_integer(dev_t, dev, disk_devt(rq->rq_disk))
+               ctf_integer(sector_t, sector, blk_rq_pos(rq))
+               ctf_integer(unsigned int, nr_sector, blk_rq_sectors(rq))
+               ctf_integer(dev_t, old_dev, dev)
+               ctf_integer(sector_t, old_sector, from)
+               blk_rwbs_ctf_integer(unsigned int, rwbs,
+                       lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq))
+       )
+)
+#else
 /**
  * block_rq_remap - map request for a block operation request
  * @q: queue holding the operation
@@ -1112,6 +1393,7 @@ LTTNG_TRACEPOINT_EVENT(block_rq_remap,
                        lttng_req_op(rq), lttng_req_rw(rq), blk_rq_bytes(rq))
        )
 )
+#endif
 
 #undef __print_rwbs_flags
 #undef blk_fill_rwbs
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