Currently, NOMMU pull km allocator via !SMP dependency because most of
them are UP, yet for SMP+NOMMU vm allocator gets pulled which:
* may lead to broken build [1]
* ...or not working runtime due to [2]
It looks like SMP+NOMMU case was overlooked in bbddff054587 ("percpu:
use percpu allocator on UP too") so restore that.
[1]
For ARM SMP+NOMMU (R-class cores)
arm-none-linux-gnueabihf-ld: mm/percpu.o: in function `pcpu_post_unmap_tlb_flush':
mm/percpu-vm.c:188: undefined reference to `flush_tlb_kernel_range'
[2]
static inline
int vmap_pages_range_noflush(unsigned long addr, unsigned long end,
pgprot_t prot, struct page **pages, unsigned int page_shift)
{
return -EINVAL;
}
Signed-off-by: Vladimir Murzin <vladimir.murzin@xxxxxxx>
---
mm/Kconfig | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/Kconfig b/mm/Kconfig
index d16ba92..66331e0 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -425,9 +425,8 @@ config THP_SWAP
# UP and nommu archs use km based percpu allocator
#
config NEED_PER_CPU_KM
- depends on !SMP
bool
- default y
+ default !SMP || !MMU
config CLEANCACHE
bool "Enable cleancache driver to cache clean pages if tmem is present"
--
2.7.4
