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| author | Jakub Kicinski <kuba@kernel.org> | 2024-04-29 07:44:21 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-04-30 08:15:31 -0700 |
| commit | 12b6c3a0380a220edb03691689167be13faa4f45 (patch) | |
| tree | 38aead9410b2151317a1961d04e6bfa42a68b0eb | |
| parent | f581bcf02f0e0b42516bfeb3e34860919b9e78d2 (diff) | |
| download | net-next-12b6c3a0380a220edb03691689167be13faa4f45.tar.gz | |
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>
| -rw-r--r-- | net/core/page_pool.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 273c24429bced7..8bcc7014a61a00 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 |