On Wed, 31 Jul 2019 14:22:13 +0200 David Hildenbrand <david@xxxxxxxxxx> wrote: > Each memory block spans the same amount of sections/pages/bytes. The size > is determined before the first memory block is created. No need to store > what we can easily calculate - and the calculations even look simpler now. > > While at it, fix the variable naming in register_mem_sect_under_node() - > we no longer talk about a single section. > > ... > > --- a/include/linux/memory.h > +++ b/include/linux/memory.h > @@ -40,6 +39,8 @@ int arch_get_memory_phys_device(unsigned long start_pfn); > unsigned long memory_block_size_bytes(void); > int set_memory_block_size_order(unsigned int order); > > +#define PAGES_PER_MEMORY_BLOCK (memory_block_size_bytes() / PAGE_SIZE) Please let's not hide function calls inside macros which look like compile-time constants! Adding "()" to the macro would be a bit better. Making it a regular old inline C function would be better still. But I'd suggest just open-coding this at the macro's single callsite.
