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From: John Hubbard <jhubbard@nvidia.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: David Hildenbrand <david@redhat.com>,
	Peter Xu <peterx@redhat.com>, "Shuah Khan" <shuah@kernel.org>,
	Nathan Chancellor <nathan@kernel.org>, <linux-mm@kvack.org>,
	<linux-kselftest@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	John Hubbard <jhubbard@nvidia.com>
Subject: [PATCH 02/12] selftests/mm: fix unused variable warning in hugetlb-madvise.c
Date: Thu, 1 Jun 2023 18:33:48 -0700	[thread overview]
Message-ID: <20230602013358.900637-3-jhubbard@nvidia.com> (raw)
In-Reply-To: <20230602013358.900637-1-jhubbard@nvidia.com>

The dummy variable is required in order to make this work, so declare it
as volatile in order to avoid the clang compiler warning.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 tools/testing/selftests/mm/hugetlb-madvise.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/hugetlb-madvise.c b/tools/testing/selftests/mm/hugetlb-madvise.c
index 28426e30d9bc..3296ccaf7525 100644
--- a/tools/testing/selftests/mm/hugetlb-madvise.c
+++ b/tools/testing/selftests/mm/hugetlb-madvise.c
@@ -65,7 +65,7 @@ void write_fault_pages(void *addr, unsigned long nr_pages)
 
 void read_fault_pages(void *addr, unsigned long nr_pages)
 {
-	unsigned long dummy = 0;
+	volatile unsigned long dummy = 0;
 	unsigned long i;
 
 	for (i = 0; i < nr_pages; i++)
-- 
2.40.1


  parent reply	other threads:[~2023-06-02  1:36 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-02  1:33 [PATCH 00/12] A minor flurry of selftest/mm fixes John Hubbard
2023-06-02  1:33 ` [PATCH 01/12] selftests/mm: fix uffd-stress unused function warning John Hubbard
2023-06-02  9:58   ` David Hildenbrand
2023-06-02 15:25   ` Peter Xu
2023-06-02  1:33 ` John Hubbard [this message]
2023-06-02 10:01   ` [PATCH 02/12] selftests/mm: fix unused variable warning in hugetlb-madvise.c David Hildenbrand
2023-06-02 18:38     ` John Hubbard
2023-06-02  1:33 ` [PATCH 03/12] selftests/mm: fix unused variable warning in migration.c John Hubbard
2023-06-02 10:02   ` David Hildenbrand
2023-06-02 18:39     ` John Hubbard
2023-06-02  1:33 ` [PATCH 04/12] selftests/mm: fix a char* assignment in mlock2-tests.c John Hubbard
2023-06-02 10:04   ` David Hildenbrand
2023-06-02 15:24     ` Peter Xu
2023-06-02 18:52       ` John Hubbard
2023-06-05 15:38         ` Peter Xu
2023-06-05 18:45           ` John Hubbard
2023-06-02  1:33 ` [PATCH 05/12] selftests/mm: fix invocation of tests that are run via shell scripts John Hubbard
2023-06-02 10:05   ` David Hildenbrand
2023-06-02 20:38     ` John Hubbard
2023-06-02 15:34   ` Peter Xu
2023-06-02 19:19     ` John Hubbard
2023-06-02 21:36       ` Peter Xu
2023-06-02 21:46         ` John Hubbard
2023-06-02  1:33 ` [PATCH 06/12] selftests/mm: .gitignore: add mkdirty, va_high_addr_switch John Hubbard
2023-06-02 10:06   ` David Hildenbrand
2023-06-02  1:33 ` [PATCH 07/12] selftests/mm: set -Wno-format-security to avoid uffd build warnings John Hubbard
2023-06-02 10:15   ` David Hildenbrand
2023-06-02 21:22     ` John Hubbard
2023-06-02  1:33 ` [PATCH 08/12] selftests/mm: fix a "possibly uninitialized" warning in pkey-x86.h John Hubbard
2023-06-02 10:16   ` David Hildenbrand
2023-06-02  1:33 ` [PATCH 09/12] selftests/mm: move psize(), pshift() into vm_utils.c John Hubbard
2023-06-02 10:19   ` David Hildenbrand
2023-06-02 21:58     ` John Hubbard
2023-06-02  1:33 ` [PATCH 10/12] selftests/mm: move uffd* routines from vm_util.c to uffd-common.c John Hubbard
2023-06-02 15:59   ` Peter Xu
2023-06-02 22:11     ` John Hubbard
2023-06-02 22:38       ` Peter Xu
2023-06-02 22:52         ` John Hubbard
2023-06-03  0:43           ` John Hubbard
2023-06-03  1:18             ` Peter Xu
2023-06-03  1:39               ` John Hubbard
2023-06-02  1:33 ` [PATCH 11/12] selftests/mm: fix missing UFFDIO_CONTINUE_MODE_WP and similar build failures John Hubbard
2023-06-02 10:23   ` David Hildenbrand
2023-06-02 22:20     ` John Hubbard
2023-06-03  8:27       ` David Hildenbrand
2023-06-03 23:48         ` John Hubbard
2023-06-02 16:25   ` Muhammad Usama Anjum
2023-06-02 22:24     ` John Hubbard
2023-06-02  1:33 ` [PATCH 12/12] selftests/mm: fix uffd-unit-tests.c build failure due to missing MADV_COLLAPSE John Hubbard
2023-06-02 10:23   ` David Hildenbrand
2023-06-02 16:34   ` Muhammad Usama Anjum
2023-06-02 22:26     ` John Hubbard
2023-06-02  9:32 ` [PATCH 00/12] A minor flurry of selftest/mm fixes David Hildenbrand
2023-06-02 17:51   ` John Hubbard

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