linux-kernel - [PATCH] test suite: Use %zu to print size

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Message-ID: <20250403003311.359917-1-Liam.Howlett@oracle.com>
Date: Wed,  2 Apr 2025 20:33:11 -0400
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>
Subject: [PATCH] test suite: Use %zu to print size_t

From: "Matthew Wilcox (Oracle)" <willy@...radead.org>

On 32-bit, we can't use %lu to print a size_t variable and gcc warns us
about it.  Shame it doesn't warn about it on 64-bit.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Fixes: cc86e0c2f306 (radix tree test suite: add support for slab bulk APIs)
Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---

Note that this requires the patch to fix the headers [1] for the testing
to build.  Unfortunately, that has not landed, but the patches do not
conflict so we should push this upstream anyways.

[1].  https://lore.kernel.org/all/20250321-fix-radix-tree-build-v1-1-838a1e6540e2@samsung.com/

 tools/testing/shared/linux.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/shared/linux.c b/tools/testing/shared/linux.c
index 66dbb362385f3..0f97fb0d19e19 100644
--- a/tools/testing/shared/linux.c
+++ b/tools/testing/shared/linux.c
@@ -150,7 +150,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp)
 void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t size, void **list)
 {
 	if (kmalloc_verbose)
-		pr_debug("Bulk free %p[0-%lu]\n", list, size - 1);
+		pr_debug("Bulk free %p[0-%zu]\n", list, size - 1);
 
 	pthread_mutex_lock(&cachep->lock);
 	for (int i = 0; i < size; i++)
@@ -168,7 +168,7 @@ int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
 	size_t i;
 
 	if (kmalloc_verbose)
-		pr_debug("Bulk alloc %lu\n", size);
+		pr_debug("Bulk alloc %zu\n", size);
 
 	pthread_mutex_lock(&cachep->lock);
 	if (cachep->nr_objs >= size) {
-- 
2.43.0