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authorKent Overstreet2014-02-12 18:43:32 -0800
committerKent Overstreet2014-03-18 12:22:35 -0700
commit7159b1ad3dded9da040b5c608acf3d52d50f661e (patch)
tree3ec196333d8ae22e359dc7d16fe8d48b8352fbea /include/trace
parent3f5e0a34daed197aa55d0c6b466bb4cd03babb4f (diff)
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.h48
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)
);