The kmem_cache_free tracepoint includes a "name" field, which allows
for easy identification and filtering of specific kmem's. However, the
kmem_cache_alloc tracepoint lacks this field, making it difficult to
pair corresponding alloc and free events for analysis.
Add the "name" field to kmem_cache_alloc to enable consistent tracking
and correlation of kmem alloc and free events.
Signed-off-by: Wander Lairson Costa <wan...@redhat.com>
---
include/trace/events/kmem.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/trace/events/kmem.h b/include/trace/events/kmem.h
index 474358773abe..7f93e754da5c 100644
--- a/include/trace/events/kmem.h
+++ b/include/trace/events/kmem.h
@@ -22,6 +22,7 @@ TRACE_EVENT(kmem_cache_alloc,
TP_STRUCT__entry(
__field( unsigned long, call_site )
__field( const void *, ptr )
+ __string( name, s->name )
__field( size_t, bytes_req )
__field( size_t, bytes_alloc )
__field( unsigned long, gfp_flags )
@@ -32,6 +33,7 @@ TRACE_EVENT(kmem_cache_alloc,
TP_fast_assign(
__entry->call_site = call_site;
__entry->ptr = ptr;
+ __assign_str(name);
__entry->bytes_req = s->object_size;
__entry->bytes_alloc = s->size;
__entry->gfp_flags = (__force unsigned long)gfp_flags;
@@ -41,9 +43,10 @@ TRACE_EVENT(kmem_cache_alloc,
(s->flags & SLAB_ACCOUNT)) : false;
),
- TP_printk("call_site=%pS ptr=%p bytes_req=%zu bytes_alloc=%zu
gfp_flags=%s node=%d accounted=%s",
+ TP_printk("call_site=%pS ptr=%p name=%s bytes_req=%zu bytes_alloc=%zu
gfp_flags=%s node=%d accounted=%s",
(void *)__entry->call_site,
__entry->ptr,
+ __get_str(name),
__entry->bytes_req,
__entry->bytes_alloc,
show_gfp_flags(__entry->gfp_flags),
--
2.51.0
