summaryrefslogtreecommitdiff
path: root/net/core
diff options
context:
space:
mode:
authorJakub Kicinski <kuba@kernel.org>2024-04-29 07:44:21 -0700
committerJakub Kicinski <kuba@kernel.org>2024-04-30 08:15:31 -0700
commit12b6c3a0380a220edb03691689167be13faa4f45 (patch)
tree38aead9410b2151317a1961d04e6bfa42a68b0eb /net/core
parentf581bcf02f0e0b42516bfeb3e34860919b9e78d2 (diff)
net: page_pool: support error injection
Because of caching / recycling using the general page allocation failures to induce errors in page pool allocation is very hard. Add direct error injection support to page_pool_alloc_pages(). Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/r/20240429144426.743476-2-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/page_pool.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 273c24429bce..8bcc7014a61a 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -5,6 +5,7 @@
* Copyright (C) 2016 Red Hat, Inc.
*/
+#include <linux/error-injection.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
@@ -550,6 +551,7 @@ struct page *page_pool_alloc_pages(struct page_pool *pool, gfp_t gfp)
return page;
}
EXPORT_SYMBOL(page_pool_alloc_pages);
+ALLOW_ERROR_INJECTION(page_pool_alloc_pages, NULL);
/* Calculate distance between two u32 values, valid if distance is below 2^(31)
* https://en.wikipedia.org/wiki/Serial_number_arithmetic#General_Solution