+ tools-testing-support-extra_cflags-in-sharedmk.patch added to mm-new branch

+ tools-testing-support-extra_cflags-in-sharedmk.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: tools: testing: support EXTRA_CFLAGS in shared.mk
has been added to the -mm mm-new branch.  Its filename is
     tools-testing-support-extra_cflags-in-sharedmk.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/tools-testing-support-extra_cflags-in-sharedmk.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
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fixup patches in mm-new.

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------------------------------------------------------
From: Brendan Jackman <jackmanb@google.com>
Subject: tools: testing: support EXTRA_CFLAGS in shared.mk
Date: Thu, 28 Aug 2025 12:28:00 +0000

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

Link: https://lkml.kernel.org/r/20250828-b4-vma-no-atomic-h-v2-3-02d146a58ed2@google.com
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Pedro Falcato <pfalcato@suse.de>
Cc: Jann Horn <jannh@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/shared/shared.mk |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/testing/shared/shared.mk~tools-testing-support-extra_cflags-in-sharedmk
+++ a/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
_

Patches currently in -mm which might be from jackmanb@google.com are

mm-remove-is_migrate_highatomic.patch
mm-page_alloc-harmonize-should_compact_retry-type.patch
tools-include-implement-a-couple-of-atomic_t-ops.patch
tools-testing-allow-importing-arch-headers-in-sharedmk.patch
tools-testing-support-extra_cflags-in-sharedmk.patch
tools-testing-use-existing-atomich-for-vma-maple-tests.patch