2011/4/24 Michael Schmitz <[email protected]>:
> Michael Schmitz wrote:
>>
>> Besides, your solution would set N_HIGH_MEMORY not N_NORMAL_MEMORY if I
>> read free_area_init_nodes() right. Does that matter?
>
> check_for_regular_memory() does take care of that - so it would be all the
> same in the end. Whether it's worth it for a handful of nodes at best I'm
> unsure. I'll leave that for Geert to decide.
check_for_regular_memory() doesn't. It is CONFIG_HIGHMEM specific.
The trick is in node_status definition. N_NORMAL_MEMORY and
N_HIGHMEMORY share the same value. then
node_set_state(nid, N_HIGH_MEMORY) turn on both normal and
highmem bitmask.
--------------------------------------------------------------------
enum node_states {
N_POSSIBLE, /* The node could become online at some point */
N_ONLINE, /* The node is online */
N_NORMAL_MEMORY, /* The node has regular memory */
#ifdef CONFIG_HIGHMEM
N_HIGH_MEMORY, /* The node has regular or high memory */
#else
N_HIGH_MEMORY = N_NORMAL_MEMORY,
#endif
N_CPU, /* The node has one or more cpus */
NR_NODE_STATES
};
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