[PATCH v2] selftests: vDSO: don't include generated headers for chacha test

["Jason A. Donenfeld" <Jason@zx2c4.com>]

It's not correct to use $(top_srcdir) for generated header files, for
builds that are done out of tree via O=, and $(objtree) isn't valid in
the selftests context. Instead, just obviate the need for these
generated header files by defining empty stubs in tools/include, which
is the same thing that's done for rwlock.h.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
I'll replace the broken commit with this one. I've verified the
kselftests are fine now, particularly for kvm.

 tools/include/generated/asm-offsets.h     | 0
 tools/include/generated/asm/cpucap-defs.h | 0
 tools/include/generated/asm/sysreg-defs.h | 0
 tools/testing/selftests/vDSO/Makefile     | 2 +-
 4 files changed, 1 insertion(+), 1 deletion(-)
 create mode 100644 tools/include/generated/asm-offsets.h
 create mode 100644 tools/include/generated/asm/cpucap-defs.h
 create mode 100644 tools/include/generated/asm/sysreg-defs.h

diff --git a/tools/include/generated/asm-offsets.h b/tools/include/generated/asm-offsets.h
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/tools/include/generated/asm/cpucap-defs.h b/tools/include/generated/asm/cpucap-defs.h
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/tools/include/generated/asm/sysreg-defs.h b/tools/include/generated/asm/sysreg-defs.h
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/tools/testing/selftests/vDSO/Makefile b/tools/testing/selftests/vDSO/Makefile
index 3c6fafbd83a6..610056acc1b7 100644
--- a/tools/testing/selftests/vDSO/Makefile
+++ b/tools/testing/selftests/vDSO/Makefile
@@ -39,7 +39,7 @@ $(OUTPUT)/vdso_test_getrandom: CFLAGS += -isystem $(top_srcdir)/tools/include \
 
 $(OUTPUT)/vdso_test_chacha: $(top_srcdir)/tools/arch/$(SRCARCH)/vdso/vgetrandom-chacha.S
 $(OUTPUT)/vdso_test_chacha: CFLAGS += -idirafter $(top_srcdir)/tools/include \
+                                      -idirafter $(top_srcdir)/tools/include/generated \
                                       -idirafter $(top_srcdir)/arch/$(SRCARCH)/include \
-                                      -idirafter $(top_srcdir)/arch/$(SRCARCH)/include/generated \
                                       -idirafter $(top_srcdir)/include \
                                       -D__ASSEMBLY__ -Wa,--noexecstack
-- 
2.46.0