linux-kernel - [PATCH 3/3] tools: testing: Support EXTRA

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Message-ID: <20250827-b4-vma-no-atomic-h-v1-3-5d3a94ae670f@google.com>
Date: Wed, 27 Aug 2025 11:04:43 +0000
From: Brendan Jackman <jackmanb@...gle.com>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>, Andrew Morton <akpm@...ux-foundation.org>, 
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, Vlastimil Babka <vbabka@...e.cz>, 
	Jann Horn <jannh@...gle.com>, Pedro Falcato <pfalcato@...e.de>
Cc: linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org, 
	linux-mm@...ck.org, Brendan Jackman <jackmanb@...gle.com>
Subject: [PATCH 3/3] tools: testing: Support EXTRA_CFLAGS in shared.mk

This allows the user to set cflags when building tests that use this
shared build infrastructure.

For example, it enables building with -Werror so that patch-check
scripts will fail:

	make -C tools/testing/vma -j EXTRA_CFLAGS=-Werror

Signed-off-by: Brendan Jackman <jackmanb@...gle.com>
---
 tools/testing/shared/shared.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/shared/shared.mk b/tools/testing/shared/shared.mk
index 937aaa7623320da1085a8e0f43f6a728ddd3ab1c..5bcdf26c8a9d51ab2cbd264f2f8a7445d7c036e3 100644
--- a/tools/testing/shared/shared.mk
+++ b/tools/testing/shared/shared.mk
@@ -4,6 +4,7 @@ include ../../scripts/Makefile.arch
 CFLAGS += -I../shared -I. -I../../include -I../../arch/$(SRCARCH)/include \
 	  -I../../../lib -g -Og -Wall \
 	  -D_LGPL_SOURCE -fsanitize=address -fsanitize=undefined
+CFLAGS += $(EXTRA_CFLAGS)
 LDFLAGS += -fsanitize=address -fsanitize=undefined
 LDLIBS += -lpthread -lurcu
 LIBS := slab.o find_bit.o bitmap.o hweight.o vsprintf.o

-- 
2.50.1