powerpc: Add tests of the code patching routines

Add tests of the existing code patching routines, as well as the new
routines added in the last commit.  The self-tests are run late in boot
when CONFIG_CODE_PATCHING_SELFTEST=y, which depends on DEBUG_KERNEL=y.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index a7d24e692bab..dc5893903363 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -57,6 +57,11 @@ config KGDB
           debugger.  See <http://kgdb.sourceforge.net/> for more information.
           Unless you are intending to debug the kernel, say N here.
 
+config CODE_PATCHING_SELFTEST
+        bool "Run self-tests of the code-patching code."
+        depends on DEBUG_KERNEL
+        default n
+
 choice
         prompt "Serial Port"
         depends on KGDB