add Mel Gorman On 2016/4/5 16:22, Chen Feng wrote: > We can reduce the memory allocated at mem-map > by flatmem. > > currently, the default memory-model in arm64 is > sparse memory. The mem-map array is not freed in > this scene. If the physical address is too long, > it will reserved too much memory for the mem-map > array. > > Signed-off-by: Chen Feng <puck.chen@xxxxxxxxxxxxx> > Signed-off-by: Fu Jun <oliver.fu@xxxxxxxxxxxxx> > --- > arch/arm64/Kconfig | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 4f43622..c18930d 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -559,6 +559,9 @@ config ARCH_SPARSEMEM_ENABLE > def_bool y > select SPARSEMEM_VMEMMAP_ENABLE > > +config ARCH_FLATMEM_ENABLE > + def_bool y > + > config ARCH_SPARSEMEM_DEFAULT > def_bool ARCH_SPARSEMEM_ENABLE > > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>