mm: fix sparsemem configuration

Currently, sparsemem is only available if EXPERIMENTAL is enabled.
However, it hasn't ever been marked experimental.

It's been about four years since sparsemem was merged, and we have
platforms which depend on it; allow architectures to decide whether
sparsemem should be the default memory model.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/Kconfig b/mm/Kconfig
index 57963c6063d1be3158bbc01c3e69dc0473b1d524..f791196cee8c3a03834650d7375eda25c31d3f24 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -67,7 +67,7 @@ config DISCONTIGMEM
 
 config SPARSEMEM
        def_bool y
-       depends on SPARSEMEM_MANUAL
+       depends on (!SELECT_MEMORY_MODEL && ARCH_SPARSEMEM_ENABLE) || SPARSEMEM_MANUAL
 
 config FLATMEM
        def_bool y