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linux_dsm_epyc7002/include/trace/events/bcache.h
Christoph Hellwig 74d46992e0 block: replace bi_bdev with a gendisk pointer and partitions index 
This way we don't need a block_device structure to submit I/O.  The
block_device has different life time rules from the gendisk and
request_queue and is usually only available when the block device node
is open.  Other callers need to explicitly create one (e.g. the lightnvm
passthrough code, or the new nvme multipathing code).

For the actual I/O path all that we need is the gendisk, which exists
once per block device.  But given that the block layer also does
partition remapping we additionally need a partition index, which is
used for said remapping in generic_make_request.

Note that all the block drivers generally want request_queue or
sometimes the gendisk, so this removes a layer of indirection all
over the stack.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-08-23 12:49:55 -06:00

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#undef TRACE_SYSTEM
#define TRACE_SYSTEM bcache
#if !defined(_TRACE_BCACHE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_BCACHE_H
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(bcache_request,
TP_PROTO(struct bcache_device *d, struct bio *bio),
TP_ARGS(d, bio),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(unsigned int, orig_major )
__field(unsigned int, orig_minor )
__field(sector_t, sector )
__field(dev_t, orig_sector )
__field(unsigned int, nr_sector )
__array(char, rwbs, 6 )
),
TP_fast_assign(
__entry->dev = bio_dev(bio);
__entry->orig_major = d->disk->major;
__entry->orig_minor = d->disk->first_minor;
__entry->sector = bio->bi_iter.bi_sector;
__entry->orig_sector = bio->bi_iter.bi_sector - 16;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->rwbs, (unsigned long long)__entry->sector,
__entry->nr_sector, __entry->orig_major, __entry->orig_minor,
(unsigned long long)__entry->orig_sector)
);
DECLARE_EVENT_CLASS(bkey,
TP_PROTO(struct bkey *k),
TP_ARGS(k),
TP_STRUCT__entry(
__field(u32, size )
__field(u32, inode )
__field(u64, offset )
__field(bool, dirty )
),
TP_fast_assign(
__entry->inode = KEY_INODE(k);
__entry->offset = KEY_OFFSET(k);
__entry->size = KEY_SIZE(k);
__entry->dirty = KEY_DIRTY(k);
),
TP_printk("%u:%llu len %u dirty %u", __entry->inode,
__entry->offset, __entry->size, __entry->dirty)
);
DECLARE_EVENT_CLASS(btree_node,
TP_PROTO(struct btree *b),
TP_ARGS(b),
TP_STRUCT__entry(
__field(size_t, bucket )
),
TP_fast_assign(
__entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0);
),
TP_printk("bucket %zu", __entry->bucket)
);
/* request.c */
DEFINE_EVENT(bcache_request, bcache_request_start,
TP_PROTO(struct bcache_device *d, struct bio *bio),
TP_ARGS(d, bio)
);
DEFINE_EVENT(bcache_request, bcache_request_end,
TP_PROTO(struct bcache_device *d, struct bio *bio),
TP_ARGS(d, bio)
);
DECLARE_EVENT_CLASS(bcache_bio,
TP_PROTO(struct bio *bio),
TP_ARGS(bio),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(sector_t, sector )
__field(unsigned int, nr_sector )
__array(char, rwbs, 6 )
),
TP_fast_assign(
__entry->dev = bio_dev(bio);
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
(unsigned long long)__entry->sector, __entry->nr_sector)
);
DEFINE_EVENT(bcache_bio, bcache_bypass_sequential,
TP_PROTO(struct bio *bio),
TP_ARGS(bio)
);
DEFINE_EVENT(bcache_bio, bcache_bypass_congested,
TP_PROTO(struct bio *bio),
TP_ARGS(bio)
);
TRACE_EVENT(bcache_read,
TP_PROTO(struct bio *bio, bool hit, bool bypass),
TP_ARGS(bio, hit, bypass),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(sector_t, sector )
__field(unsigned int, nr_sector )
__array(char, rwbs, 6 )
__field(bool, cache_hit )
__field(bool, bypass )
),
TP_fast_assign(
__entry->dev = bio_dev(bio);
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
__entry->cache_hit = hit;
__entry->bypass = bypass;
),
TP_printk("%d,%d %s %llu + %u hit %u bypass %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->rwbs, (unsigned long long)__entry->sector,
__entry->nr_sector, __entry->cache_hit, __entry->bypass)
);
TRACE_EVENT(bcache_write,
TP_PROTO(struct cache_set *c, u64 inode, struct bio *bio,
bool writeback, bool bypass),
TP_ARGS(c, inode, bio, writeback, bypass),
TP_STRUCT__entry(
__array(char, uuid, 16 )
__field(u64, inode )
__field(sector_t, sector )
__field(unsigned int, nr_sector )
__array(char, rwbs, 6 )
__field(bool, writeback )
__field(bool, bypass )
),
TP_fast_assign(
memcpy(__entry->uuid, c->sb.set_uuid, 16);
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
blk_fill_rwbs(__entry->rwbs, bio->bi_opf, bio->bi_iter.bi_size);
__entry->writeback = writeback;
__entry->bypass = bypass;
),
TP_printk("%pU inode %llu %s %llu + %u hit %u bypass %u",
__entry->uuid, __entry->inode,
__entry->rwbs, (unsigned long long)__entry->sector,
__entry->nr_sector, __entry->writeback, __entry->bypass)
);
DEFINE_EVENT(bcache_bio, bcache_read_retry,
TP_PROTO(struct bio *bio),
TP_ARGS(bio)
);
DEFINE_EVENT(bkey, bcache_cache_insert,
TP_PROTO(struct bkey *k),
TP_ARGS(k)
);
/* Journal */
DECLARE_EVENT_CLASS(cache_set,
TP_PROTO(struct cache_set *c),
TP_ARGS(c),
TP_STRUCT__entry(
__array(char, uuid, 16 )
),
TP_fast_assign(
memcpy(__entry->uuid, c->sb.set_uuid, 16);
),
TP_printk("%pU", __entry->uuid)
);
DEFINE_EVENT(bkey, bcache_journal_replay_key,
TP_PROTO(struct bkey *k),
TP_ARGS(k)
);
DEFINE_EVENT(cache_set, bcache_journal_full,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(cache_set, bcache_journal_entry_full,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(bcache_bio, bcache_journal_write,
TP_PROTO(struct bio *bio),
TP_ARGS(bio)
);
/* Btree */
DEFINE_EVENT(cache_set, bcache_btree_cache_cannibalize,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(btree_node, bcache_btree_read,
TP_PROTO(struct btree *b),
TP_ARGS(b)
);
TRACE_EVENT(bcache_btree_write,
TP_PROTO(struct btree *b),
TP_ARGS(b),
TP_STRUCT__entry(
__field(size_t, bucket )
__field(unsigned, block )
__field(unsigned, keys )
),
TP_fast_assign(
__entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0);
__entry->block = b->written;
__entry->keys = b->keys.set[b->keys.nsets].data->keys;
),
TP_printk("bucket %zu", __entry->bucket)
);
DEFINE_EVENT(btree_node, bcache_btree_node_alloc,
TP_PROTO(struct btree *b),
TP_ARGS(b)
);
DEFINE_EVENT(cache_set, bcache_btree_node_alloc_fail,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(btree_node, bcache_btree_node_free,
TP_PROTO(struct btree *b),
TP_ARGS(b)
);
TRACE_EVENT(bcache_btree_gc_coalesce,
TP_PROTO(unsigned nodes),
TP_ARGS(nodes),
TP_STRUCT__entry(
__field(unsigned, nodes )
),
TP_fast_assign(
__entry->nodes = nodes;
),
TP_printk("coalesced %u nodes", __entry->nodes)
);
DEFINE_EVENT(cache_set, bcache_gc_start,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(cache_set, bcache_gc_end,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(bkey, bcache_gc_copy,
TP_PROTO(struct bkey *k),
TP_ARGS(k)
);
DEFINE_EVENT(bkey, bcache_gc_copy_collision,
TP_PROTO(struct bkey *k),
TP_ARGS(k)
);
TRACE_EVENT(bcache_btree_insert_key,
TP_PROTO(struct btree *b, struct bkey *k, unsigned op, unsigned status),
TP_ARGS(b, k, op, status),
TP_STRUCT__entry(
__field(u64, btree_node )
__field(u32, btree_level )
__field(u32, inode )
__field(u64, offset )
__field(u32, size )
__field(u8, dirty )
__field(u8, op )
__field(u8, status )
),
TP_fast_assign(
__entry->btree_node = PTR_BUCKET_NR(b->c, &b->key, 0);
__entry->btree_level = b->level;
__entry->inode = KEY_INODE(k);
__entry->offset = KEY_OFFSET(k);
__entry->size = KEY_SIZE(k);
__entry->dirty = KEY_DIRTY(k);
__entry->op = op;
__entry->status = status;
),
TP_printk("%u for %u at %llu(%u): %u:%llu len %u dirty %u",
__entry->status, __entry->op,
__entry->btree_node, __entry->btree_level,
__entry->inode, __entry->offset,
__entry->size, __entry->dirty)
);
DECLARE_EVENT_CLASS(btree_split,
TP_PROTO(struct btree *b, unsigned keys),
TP_ARGS(b, keys),
TP_STRUCT__entry(
__field(size_t, bucket )
__field(unsigned, keys )
),
TP_fast_assign(
__entry->bucket = PTR_BUCKET_NR(b->c, &b->key, 0);
__entry->keys = keys;
),
TP_printk("bucket %zu keys %u", __entry->bucket, __entry->keys)
);
DEFINE_EVENT(btree_split, bcache_btree_node_split,
TP_PROTO(struct btree *b, unsigned keys),
TP_ARGS(b, keys)
);
DEFINE_EVENT(btree_split, bcache_btree_node_compact,
TP_PROTO(struct btree *b, unsigned keys),
TP_ARGS(b, keys)
);
DEFINE_EVENT(btree_node, bcache_btree_set_root,
TP_PROTO(struct btree *b),
TP_ARGS(b)
);
TRACE_EVENT(bcache_keyscan,
TP_PROTO(unsigned nr_found,
unsigned start_inode, uint64_t start_offset,
unsigned end_inode, uint64_t end_offset),
TP_ARGS(nr_found,
start_inode, start_offset,
end_inode, end_offset),
TP_STRUCT__entry(
__field(__u32, nr_found )
__field(__u32, start_inode )
__field(__u64, start_offset )
__field(__u32, end_inode )
__field(__u64, end_offset )
),
TP_fast_assign(
__entry->nr_found = nr_found;
__entry->start_inode = start_inode;
__entry->start_offset = start_offset;
__entry->end_inode = end_inode;
__entry->end_offset = end_offset;
),
TP_printk("found %u keys from %u:%llu to %u:%llu", __entry->nr_found,
__entry->start_inode, __entry->start_offset,
__entry->end_inode, __entry->end_offset)
);
/* Allocator */
TRACE_EVENT(bcache_invalidate,
TP_PROTO(struct cache *ca, size_t bucket),
TP_ARGS(ca, bucket),
TP_STRUCT__entry(
__field(unsigned, sectors )
__field(dev_t, dev )
__field(__u64, offset )
),
TP_fast_assign(
__entry->dev = ca->bdev->bd_dev;
__entry->offset = bucket << ca->set->bucket_bits;
__entry->sectors = GC_SECTORS_USED(&ca->buckets[bucket]);
),
TP_printk("invalidated %u sectors at %d,%d sector=%llu",
__entry->sectors, MAJOR(__entry->dev),
MINOR(__entry->dev), __entry->offset)
);
TRACE_EVENT(bcache_alloc,
TP_PROTO(struct cache *ca, size_t bucket),
TP_ARGS(ca, bucket),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(__u64, offset )
),
TP_fast_assign(
__entry->dev = ca->bdev->bd_dev;
__entry->offset = bucket << ca->set->bucket_bits;
),
TP_printk("allocated %d,%d sector=%llu", MAJOR(__entry->dev),
MINOR(__entry->dev), __entry->offset)
);
TRACE_EVENT(bcache_alloc_fail,
TP_PROTO(struct cache *ca, unsigned reserve),
TP_ARGS(ca, reserve),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(unsigned, free )
__field(unsigned, free_inc )
__field(unsigned, blocked )
),
TP_fast_assign(
__entry->dev = ca->bdev->bd_dev;
__entry->free = fifo_used(&ca->free[reserve]);
__entry->free_inc = fifo_used(&ca->free_inc);
__entry->blocked = atomic_read(&ca->set->prio_blocked);
),
TP_printk("alloc fail %d,%d free %u free_inc %u blocked %u",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->free,
__entry->free_inc, __entry->blocked)
);
/* Background writeback */
DEFINE_EVENT(bkey, bcache_writeback,
TP_PROTO(struct bkey *k),
TP_ARGS(k)
);
DEFINE_EVENT(bkey, bcache_writeback_collision,
TP_PROTO(struct bkey *k),
TP_ARGS(k)
);
#endif /* _TRACE_BCACHE_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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