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 <[email protected]> --- Changes: v2: move the "name" field to avoid a hole in the struct. Signed-off-by: Wander Lairson Costa <[email protected]> --- 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 b37eb0a7060f..c6aea6610cf5 100644 --- a/include/trace/events/kmem.h +++ b/include/trace/events/kmem.h @@ -26,12 +26,14 @@ TRACE_EVENT(kmem_cache_alloc, __field( size_t, bytes_alloc ) __field( unsigned long, gfp_flags ) __field( int, node ) + __string( name, s->name ) __field( bool, accounted ) ), 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), -- 2.48.1
