selftests: ublk: kublk: fix include path

Building kublk currently fails (with a "could not find linux/ublk_cmd.h"
error message) if kernel headers are not installed in a system-global
location (i.e. somewhere in the compiler's default include search path).
This failure is unnecessary, as make kselftest installs kernel headers
in the build tree - kublk's build just isn't looking for them properly.
There is an include path in kublk's CFLAGS which is probably intended to
find the kernel headers installed in the build tree; fix it so that it
can actually find them.

This introduces some macro redefinition issues between glibc-provided
headers and kernel headers; fix those by eliminating one include in
kublk.

Signed-off-by: Uday Shankar <ushankar@purestorage.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250429-ublk_selftests-v2-3-e970b6d9e4f4@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/tools/testing/selftests/ublk/Makefile b/tools/testing/selftests/ublk/Makefile
index d8eb137abacdb7c43d14f32ece70e53a4970716f..e2e7b1e52a06252f626df5606221d17e3106d0d3 100644 (file)
--- a/tools/testing/selftests/ublk/Makefile
+++ b/tools/testing/selftests/ublk/Makefile
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 
-CFLAGS += -O3 -Wl,-no-as-needed -Wall -I $(top_srcdir)
+CFLAGS += -O3 -Wl,-no-as-needed -Wall -I $(top_srcdir)/usr/include
 ifneq ($(WERROR),0)
        CFLAGS += -Werror
 endif

diff --git a/tools/testing/selftests/ublk/kublk.h b/tools/testing/selftests/ublk/kublk.h
index 44ee1e4ac55b2de145249205ddb449a56d8103ce..81fb5864ab722380d7aaca3450b5c642d0c95a16 100644 (file)
--- a/tools/testing/selftests/ublk/kublk.h
+++ b/tools/testing/selftests/ublk/kublk.h
@@ -19,7 +19,6 @@
 #include <sys/inotify.h>
 #include <sys/wait.h>
 #include <sys/eventfd.h>
-#include <sys/uio.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>
 #include <linux/io_uring.h>