linux-kernel - [PATCH 1/1] lib: kunit: Suppress a compilation warning of frame size

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Date:   Tue, 18 May 2021 17:45:33 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Vitor Massaru Iha <vitor@...saru.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>
Subject: [PATCH 1/1] lib: kunit: Suppress a compilation warning of frame size

lib/bitfield_kunit.c: In function ‘test_bitfields_constants’:
lib/bitfield_kunit.c:93:1: warning: the frame size of 7456 bytes is larger than 2048 bytes [-Wframe-larger-than=]
 }
 ^

As the description of BITFIELD_KUNIT in lib/Kconfig.debug, it "Only useful
for kernel devs running the KUnit test harness, and not intended for
inclusion into a production build". Therefore, it is not worth modifying
variable 'test_bitfields_constants' to clear this warning. Just suppress
it.

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 lib/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Makefile b/lib/Makefile
index e11cfc18b6c0826..2cc359ec1fdd3e1 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -348,6 +348,7 @@ obj-$(CONFIG_OBJAGG) += objagg.o
 obj-$(CONFIG_PLDMFW) += pldmfw/
 
 # KUnit tests
+CFLAGS_bitfield_kunit.o := $(call cc-option,-Wframe-larger-than=10240)
 obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o
 obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
 obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
-- 
2.26.0.106.g9fadedd