linux-kernel - [PATCH v2 1/2] selftests/damon: suppress compiler warnings for huge_count_read

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Message-Id: <20220504000358.1174849-1-yuanchu@google.com>
Date:   Wed,  4 May 2022 00:03:57 +0000
From:   Yuanchu Xie <yuanchu@...gle.com>
To:     Shuah Khan <shuah@...nel.org>, Markus Boehme <markubo@...zon.de>,
        SeongJae Park <sj@...nel.org>
Cc:     rientjes@...gle.com, Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yuanchu Xie <yuanchu@...gle.com>
Subject: [PATCH v2 1/2] selftests/damon: suppress compiler warnings for huge_count_read_write

The test case added in commit db7a347b26fe ("mm/damon/dbgfs:
use '__GFP_NOWARN' for user-specified size buffer allocation")
intentionally writes and reads with a large count to cause
allocation failure and check for kernel warnings. We suppress
the compiler warnings for these calls as they work as intended.

Signed-off-by: Yuanchu Xie <yuanchu@...gle.com>
---
 tools/testing/selftests/damon/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile
index 0470c5f3e690..a300b4c5b373 100644
--- a/tools/testing/selftests/damon/Makefile
+++ b/tools/testing/selftests/damon/Makefile
@@ -1,6 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0
 # Makefile for damon selftests
 
+CFLAGS += -Wno-stringop-overread
+CFLAGS += -Wno-stringop-overflow
+
 TEST_GEN_FILES += huge_count_read_write
 
 TEST_FILES = _chk_dependency.sh _debugfs_common.sh
-- 
2.36.0.464.gb9c8b46e94-goog