linux-toradex.git/arch/um/include/shared/mem_user.h, branch v3.19 Linux kernel for Apalis and Colibri modules um: delete unnecessary bootmem struct page array 2014-10-13T15:15:09+00:00 Honggang Li enjoymindful@gmail.com 2014-06-03T05:30:45+00:00 9e6a57d2cdee36a6d9c5d5cc3db85713dd416719 1) uml kernel bootmem managed through bootmem_data->node_bootmem_map, not the struct page array, so the array is unnecessary. 2) the bootmem struct page array has been pointed by a *local* pointer, struct page *map, in init_maps function. The array can be accessed only in init_maps's scope. As a result, uml kernel wastes about 1% of total memory. Signed-off-by: Honggang Li <enjoymindful@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
1) uml kernel bootmem managed through bootmem_data->node_bootmem_map,
not the struct page array, so the array is unnecessary.

2) the bootmem struct page array has been pointed by a *local* pointer,
struct page *map, in init_maps function. The array can be accessed only
in init_maps's scope. As a result, uml kernel wastes about 1% of total
memory.

Signed-off-by: Honggang Li <enjoymindful@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
x86, um: take arch/um/include/* out of the way 2008-10-23T05:55:19+00:00 Al Viro viro@zeniv.linux.org.uk 2008-08-17T17:48:37+00:00 8569c9140bd41089f9b6be8837ca421102714a90 We can't just plop asm/* into it - userland helpers are built with it in search path and seeing asm/* show up there suddenly would be a bad idea. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
We can't just plop asm/* into it - userland helpers are built with it
in search path and seeing asm/* show up there suddenly would be a bad
idea.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>