linux-kernel - [PATCH] selftests/mm: Fix build warnings on ppc64

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Date: Tue, 21 May 2024 13:02:19 +1000
From: Michael Ellerman <mpe@...erman.id.au>
To: <linux-kselftest@...r.kernel.org>,
	<skhan@...uxfoundation.org>
Cc: <linux-kernel@...r.kernel.org>,
	<linuxppc-dev@...ts.ozlabs.org>,
	<akpm@...ux-foundation.org>,
	<linux-mm@...ck.org>
Subject: [PATCH] selftests/mm: Fix build warnings on ppc64

Fix warnings like:

  In file included from uffd-unit-tests.c:8:
  uffd-unit-tests.c: In function ‘uffd_poison_handle_fault’:
  uffd-common.h:45:33: warning: format ‘%llu’ expects argument of type
  ‘long long unsigned int’, but argument 3 has type ‘__u64’ {aka ‘long
  unsigned int’} [-Wformat=]

By switching to unsigned long long for u64 for ppc64 builds.

Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
---
 tools/testing/selftests/mm/gup_test.c    | 1 +
 tools/testing/selftests/mm/uffd-common.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tools/testing/selftests/mm/gup_test.c b/tools/testing/selftests/mm/gup_test.c
index bd335cf9bc0e..bdeaac67ff9a 100644
--- a/tools/testing/selftests/mm/gup_test.c
+++ b/tools/testing/selftests/mm/gup_test.c
@@ -1,3 +1,4 @@
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 #include <fcntl.h>
 #include <errno.h>
 #include <stdio.h>
diff --git a/tools/testing/selftests/mm/uffd-common.h b/tools/testing/selftests/mm/uffd-common.h
index cc5629c3d2aa..a70ae10b5f62 100644
--- a/tools/testing/selftests/mm/uffd-common.h
+++ b/tools/testing/selftests/mm/uffd-common.h
@@ -8,6 +8,7 @@
 #define __UFFD_COMMON_H__
 
 #define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
-- 
2.45.1