tools: fix userspace compilation with new test_xarray changes

Patch series "test_xarray: couple of fixes for v6-9-rc6", v2.

Here are a couple of fixes which should be merged into the queue for
v6.9-rc6.  The first one was reported by Liam, after fixing that I noticed
an issue with a test, and a fix for that is in the second patch.


This patch (of 2):

Liam reported that compiling the test_xarray on userspace was broken.  I
was not even aware that was possible but you can via and you can run these
tests in userspace with:

make -C tools/testing/radix-tree
./tools/testing/radix-tree/xarray

Add the two helpers we need to fix compilation.  We don't need a userspace
schedule() so just make it do nothing.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: a60cc28 ("test_xarray: add tests for advanced multi-index use")
Signed-off-by: Luis Chamberlain <[email protected]>
Reported-by: "Liam R. Howlett" <[email protected]>
Cc: Daniel Gomez <[email protected]>
Cc: Darrick J. Wong <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Pankaj Raghav <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: mcgrof

tools/testing/radix-tree/linux/kernel.h

@@ -18,6 +18,8 @@
 #define pr_info printk
 #define pr_debug printk
 #define pr_cont printk
+#define schedule()
+#define PAGE_SHIFT	12
 
 #define __acquires(x)
 #define __releases(x)