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| author |   Kent Overstreet <kmo@daterainc.com> | 2014-02-12 18:43:32 -0800 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2014-03-18 12:22:35 -0700 |
| commit | 7159b1ad3dded9da040b5c608acf3d52d50f661e (patch) | |
| tree | 3ec196333d8ae22e359dc7d16fe8d48b8352fbea /include/trace | |
| parent | bcache: Kill dead cgroup code (diff) | |
| download | linux-dev-7159b1ad3dded9da040b5c608acf3d52d50f661e.tar.xz linux-dev-7159b1ad3dded9da040b5c608acf3d52d50f661e.zip | |
bcache: Better alloc tracepoints
Change the invalidate tracepoint to indicate how much data we're invalidating,
and change the alloc tracepoints to indicate what offset they're for.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/bcache.h | 48 |
1 files changed, 34 insertions, 14 deletions
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h index 7110897c3dfa..8fc2a7134d3c 100644 --- a/include/trace/events/bcache.h +++ b/include/trace/events/bcache.h @@ -399,26 +399,43 @@ TRACE_EVENT(bcache_keyscan, /* Allocator */ -TRACE_EVENT(bcache_alloc_invalidate, - TP_PROTO(struct cache *ca), - TP_ARGS(ca), +TRACE_EVENT(bcache_invalidate, + TP_PROTO(struct cache *ca, size_t bucket), + TP_ARGS(ca, bucket), TP_STRUCT__entry( - __field(unsigned, free ) - __field(unsigned, free_inc ) - __field(unsigned, free_inc_size ) - __field(unsigned, unused ) + __field(unsigned, sectors ) + __field(dev_t, dev ) + __field(__u64, offset ) ), TP_fast_assign( - __entry->free = fifo_used(&ca->free[RESERVE_NONE]); - __entry->free_inc = fifo_used(&ca->free_inc); - __entry->free_inc_size = ca->free_inc.size; - __entry->unused = fifo_used(&ca->unused); + __entry->dev = ca->bdev->bd_dev; + __entry->offset = bucket << ca->set->bucket_bits; + __entry->sectors = GC_SECTORS_USED(&ca->buckets[bucket]); ), - TP_printk("free %u free_inc %u/%u unused %u", __entry->free, - __entry->free_inc, __entry->free_inc_size, __entry->unused) + 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, @@ -426,6 +443,7 @@ TRACE_EVENT(bcache_alloc_fail, TP_ARGS(ca, reserve), TP_STRUCT__entry( + __field(dev_t, dev ) __field(unsigned, free ) __field(unsigned, free_inc ) __field(unsigned, unused ) @@ -433,13 +451,15 @@ TRACE_EVENT(bcache_alloc_fail, ), 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->unused = fifo_used(&ca->unused); __entry->blocked = atomic_read(&ca->set->prio_blocked); ), - TP_printk("free %u free_inc %u unused %u blocked %u", __entry->free, + TP_printk("alloc fail %d,%d free %u free_inc %u unused %u blocked %u", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->free, __entry->free_inc, __entry->unused, __entry->blocked) ); |