2014-04-22 14:22:59

by Drew Richardson

Subject: [PATCH] Export kmem tracepoints for use by kernel modules

After commit de7b2973903c6cc50b31ee5682a69b2219b9919d ("tracepoint:
Use struct pointer instead of name hash for reg/unreg tracepoints"),
any tracepoints used in a kernel module must be exported.

Signed-off-by: Drew Richardson <[email protected]>
Acked-by: Pawel Moll <[email protected]>
---
mm/util.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/mm/util.c b/mm/util.c
index f380af7ea779..379e8db560b3 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -502,3 +502,9 @@ EXPORT_TRACEPOINT_SYMBOL(kmalloc_node);
EXPORT_TRACEPOINT_SYMBOL(kmem_cache_alloc_node);
EXPORT_TRACEPOINT_SYMBOL(kfree);
EXPORT_TRACEPOINT_SYMBOL(kmem_cache_free);
+EXPORT_TRACEPOINT_SYMBOL_GPL(mm_page_free);
+EXPORT_TRACEPOINT_SYMBOL_GPL(mm_page_free_batched);
+EXPORT_TRACEPOINT_SYMBOL_GPL(mm_page_alloc);
+EXPORT_TRACEPOINT_SYMBOL_GPL(mm_page_alloc_zone_locked);
+EXPORT_TRACEPOINT_SYMBOL_GPL(mm_page_pcpu_drain);
+EXPORT_TRACEPOINT_SYMBOL_GPL(mm_page_alloc_extfrag);
--
1.8.3.2

2014-04-22 15:19:59

by Christoph Hellwig

Subject: Re: [PATCH] Export kmem tracepoints for use by kernel modules

On Tue, Apr 22, 2014 at 07:22:45AM -0700, Drew Richardson wrote:
> After commit de7b2973903c6cc50b31ee5682a69b2219b9919d ("tracepoint:
> Use struct pointer instead of name hash for reg/unreg tracepoints"),
> any tracepoints used in a kernel module must be exported.

But none of them are used by any in-tree module, so this isn't relevant.