This is used to expand the interface of get_pfn_range_for_nid with flags of memblock, so mm can get pfn range with special flags.
Signed-off-by: Huaisheng Ye <[email protected]> Signed-off-by: Ocean He <[email protected]> --- include/linux/mm.h | 4 ++++ mm/page_alloc.c | 17 ++++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index ad06d42..8abf9c9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2046,6 +2046,10 @@ extern unsigned long absent_pages_in_range(unsigned long start_pfn, unsigned long end_pfn); extern void get_pfn_range_for_nid(unsigned int nid, unsigned long *start_pfn, unsigned long *end_pfn); +extern void get_pfn_range_for_nid_with_flags(unsigned int nid, + unsigned long *start_pfn, + unsigned long *end_pfn, + unsigned long flags); extern unsigned long find_min_pfn_with_active_regions(void); extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 1741dd2..266c065 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5705,13 +5705,28 @@ void __init sparse_memory_present_with_active_regions(int nid) void __meminit get_pfn_range_for_nid(unsigned int nid, unsigned long *start_pfn, unsigned long *end_pfn) { + get_pfn_range_for_nid_with_flags(nid, start_pfn, end_pfn, + MEMBLOCK_MAX_TYPE); +} + +/* + * If MAX_NUMNODES, includes all node memmory regions. + * If MEMBLOCK_MAX_TYPE, includes all memory regions with or without Flags. + */ + +void __meminit get_pfn_range_for_nid_with_flags(unsigned int nid, + unsigned long *start_pfn, + unsigned long *end_pfn, + unsigned long flags) +{ unsigned long this_start_pfn, this_end_pfn; int i; *start_pfn = -1UL; *end_pfn = 0; - for_each_mem_pfn_range(i, nid, &this_start_pfn, &this_end_pfn, NULL) { + for_each_mem_pfn_range_with_flags(i, nid, &this_start_pfn, + &this_end_pfn, NULL, flags) { *start_pfn = min(*start_pfn, this_start_pfn); *end_pfn = max(*end_pfn, this_end_pfn); } -- 1.8.3.1
