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Subject[RFC][PATCH v1 12/15] perf: export tracepoint events via sysfs: kmem
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kmem tracepoint events are exported like below,

/sys/kernel/slab/events/
|-- kfree
| |-- config
| `-- type
|-- kmalloc
| |-- config
| `-- type
|-- kmalloc_node
| |-- config
| `-- type
|-- kmem_cache_alloc
| |-- config
| `-- type
|-- kmem_cache_alloc_node
| |-- config
| `-- type
|-- kmem_cache_free
| |-- config
| `-- type
|-- mm_page_alloc
| |-- config
| `-- type
|-- mm_page_alloc_extfrag
| |-- config
| `-- type
|-- mm_page_alloc_zone_locked
| |-- config
| `-- type
|-- mm_page_free_direct
| |-- config
| `-- type
|-- mm_page_pcpu_drain
| |-- config
| `-- type
`-- mm_pagevec_free
|-- config
`-- type
---
mm/slub.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 7bb7940..0de39dd 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -27,6 +27,7 @@
#include <linux/memory.h>
#include <linux/math64.h>
#include <linux/fault-inject.h>
+#include <linux/perf_event.h>

/*
* Lock order:
@@ -4554,6 +4555,8 @@ static int __init slab_sysfs_init(void)
return -ENOSYS;
}

+ perf_sys_add_tp(&slab_kset->kobj, "kmem");
+
slab_state = SYSFS;

list_for_each_entry(s, &slab_caches, list) {




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