Patch "Revert "selftests: Compile kselftest headers with -D_GNU_SOURCE"" has been added to the 6.9-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    Revert "selftests: Compile kselftest headers with -D_GNU_SOURCE"

to the 6.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-selftests-compile-kselftest-headers-with-d_gn.patch
and it can be found in the queue-6.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit e4f5f98bf219b98f431af32e5fb0651fcb02ac43
Author: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Date:   Thu May 16 20:51:07 2024 -0600

    Revert "selftests: Compile kselftest headers with -D_GNU_SOURCE"
    
    [ Upstream commit cee27ae5f1fb8bc4762f5d5de19ec6de6c45e239 ]
    
    This reverts commit daef47b89efd0b745e8478d69a3ad724bd8b4dc6.
    
    This framework change to add D_GNU_SOURCE to KHDR_INCLUDES
    to Makefile, lib.mk, and kselftest_harness.h is causing build
    failures and warnings.
    
    Revert this change.
    
    Reported-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index ed012a7f07865..e1504833654db 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -161,11 +161,11 @@ ifneq ($(KBUILD_OUTPUT),)
   # $(realpath ...) resolves symlinks
   abs_objtree := $(realpath $(abs_objtree))
   BUILD := $(abs_objtree)/kselftest
-  KHDR_INCLUDES := -D_GNU_SOURCE -isystem ${abs_objtree}/usr/include
+  KHDR_INCLUDES := -isystem ${abs_objtree}/usr/include
 else
   BUILD := $(CURDIR)
   abs_srctree := $(shell cd $(top_srcdir) && pwd)
-  KHDR_INCLUDES := -D_GNU_SOURCE -isystem ${abs_srctree}/usr/include
+  KHDR_INCLUDES := -isystem ${abs_srctree}/usr/include
   DEFAULT_INSTALL_HDR_PATH := 1
 endif
 
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index 37b03f1b8741d..3c8f2965c2850 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -51,7 +51,7 @@
 #define __KSELFTEST_HARNESS_H
 
 #ifndef _GNU_SOURCE
-static_assert(0, "kselftest harness requires _GNU_SOURCE to be defined");
+#define _GNU_SOURCE
 #endif
 #include <asm/types.h>
 #include <ctype.h>
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index 7fa4a96e26ed6..8ae203d8ed7fa 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -53,7 +53,7 @@ selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
 top_srcdir = $(selfdir)/../../..
 
 ifeq ($(KHDR_INCLUDES),)
-KHDR_INCLUDES := -D_GNU_SOURCE -isystem $(top_srcdir)/usr/include
+KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include
 endif
 
 # The following are built by lib.mk common compile rules.