From b115423357e0cda6d8f45d0c81df537d7b004020 Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Tue, 21 Jan 2014 15:50:16 -0800 Subject: mm/memblock: switch to use NUMA_NO_NODE instead of MAX_NUMNODES It's recommended to use NUMA_NO_NODE everywhere to select "process any node" behavior or to indicate that "no node id specified". Hence, update __next_free_mem_range*() API's to accept both NUMA_NO_NODE and MAX_NUMNODES, but emit warning once on MAX_NUMNODES, and correct corresponding API's documentation to describe new behavior. Also, update other memblock/nobootmem APIs where MAX_NUMNODES is used dirrectly. The change was suggested by Tejun Heo. Signed-off-by: Grygorii Strashko Signed-off-by: Santosh Shilimkar Cc: Yinghai Lu Cc: Tejun Heo Cc: "Rafael J. Wysocki" Cc: Arnd Bergmann Cc: Christoph Lameter Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: Johannes Weiner Cc: KAMEZAWA Hiroyuki Cc: Konrad Rzeszutek Wilk Cc: Michal Hocko Cc: Paul Walmsley Cc: Pavel Machek Cc: Russell King Cc: Tony Lindgren Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memblock.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) (limited to 'mm/memblock.c') diff --git a/mm/memblock.c b/mm/memblock.c index a95d6dc066d5..03f1dc7b663c 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -94,7 +94,7 @@ static long __init_memblock memblock_overlaps_region(struct memblock_type *type, * @end: end of candidate range, can be %MEMBLOCK_ALLOC_{ANYWHERE|ACCESSIBLE} * @size: size of free area to find * @align: alignment of free area to find - * @nid: nid of the free area to find, %MAX_NUMNODES for any node + * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * * Utility called from memblock_find_in_range_node(), find free area bottom-up. * @@ -126,7 +126,7 @@ __memblock_find_range_bottom_up(phys_addr_t start, phys_addr_t end, * @end: end of candidate range, can be %MEMBLOCK_ALLOC_{ANYWHERE|ACCESSIBLE} * @size: size of free area to find * @align: alignment of free area to find - * @nid: nid of the free area to find, %MAX_NUMNODES for any node + * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * * Utility called from memblock_find_in_range_node(), find free area top-down. * @@ -161,7 +161,7 @@ __memblock_find_range_top_down(phys_addr_t start, phys_addr_t end, * @align: alignment of free area to find * @start: start of candidate range * @end: end of candidate range, can be %MEMBLOCK_ALLOC_{ANYWHERE|ACCESSIBLE} - * @nid: nid of the free area to find, %MAX_NUMNODES for any node + * @nid: nid of the free area to find, %NUMA_NO_NODE for any node * * Find @size free area aligned to @align in the specified range and node. * @@ -242,7 +242,7 @@ phys_addr_t __init_memblock memblock_find_in_range(phys_addr_t start, phys_addr_t align) { return memblock_find_in_range_node(size, align, start, end, - MAX_NUMNODES); + NUMA_NO_NODE); } static void __init_memblock memblock_remove_region(struct memblock_type *type, unsigned long r) @@ -754,7 +754,7 @@ int __init_memblock memblock_clear_hotplug(phys_addr_t base, phys_addr_t size) /** * __next_free_mem_range - next function for for_each_free_mem_range() * @idx: pointer to u64 loop variable - * @nid: node selector, %MAX_NUMNODES for all nodes + * @nid: node selector, %NUMA_NO_NODE for all nodes * @out_start: ptr to phys_addr_t for start address of the range, can be %NULL * @out_end: ptr to phys_addr_t for end address of the range, can be %NULL * @out_nid: ptr to int for nid of the range, can be %NULL @@ -782,6 +782,11 @@ void __init_memblock __next_free_mem_range(u64 *idx, int nid, struct memblock_type *rsv = &memblock.reserved; int mi = *idx & 0xffffffff; int ri = *idx >> 32; + bool check_node = (nid != NUMA_NO_NODE) && (nid != MAX_NUMNODES); + + if (nid == MAX_NUMNODES) + pr_warn_once("%s: Usage of MAX_NUMNODES is depricated. Use NUMA_NO_NODE instead\n", + __func__); for ( ; mi < mem->cnt; mi++) { struct memblock_region *m = &mem->regions[mi]; @@ -789,7 +794,7 @@ void __init_memblock __next_free_mem_range(u64 *idx, int nid, phys_addr_t m_end = m->base + m->size; /* only memory regions are associated with nodes, check it */ - if (nid != MAX_NUMNODES && nid != memblock_get_region_node(m)) + if (check_node && nid != memblock_get_region_node(m)) continue; /* scan areas before each reservation for intersection */ @@ -830,7 +835,7 @@ void __init_memblock __next_free_mem_range(u64 *idx, int nid, /** * __next_free_mem_range_rev - next function for for_each_free_mem_range_reverse() * @idx: pointer to u64 loop variable - * @nid: nid: node selector, %MAX_NUMNODES for all nodes + * @nid: nid: node selector, %NUMA_NO_NODE for all nodes * @out_start: ptr to phys_addr_t for start address of the range, can be %NULL * @out_end: ptr to phys_addr_t for end address of the range, can be %NULL * @out_nid: ptr to int for nid of the range, can be %NULL @@ -850,6 +855,11 @@ void __init_memblock __next_free_mem_range_rev(u64 *idx, int nid, struct memblock_type *rsv = &memblock.reserved; int mi = *idx & 0xffffffff; int ri = *idx >> 32; + bool check_node = (nid != NUMA_NO_NODE) && (nid != MAX_NUMNODES); + + if (nid == MAX_NUMNODES) + pr_warn_once("%s: Usage of MAX_NUMNODES is depricated. Use NUMA_NO_NODE instead\n", + __func__); if (*idx == (u64)ULLONG_MAX) { mi = mem->cnt - 1; @@ -862,7 +872,7 @@ void __init_memblock __next_free_mem_range_rev(u64 *idx, int nid, phys_addr_t m_end = m->base + m->size; /* only memory regions are associated with nodes, check it */ - if (nid != MAX_NUMNODES && nid != memblock_get_region_node(m)) + if (check_node && nid != memblock_get_region_node(m)) continue; /* skip hotpluggable memory regions if needed */ @@ -989,7 +999,7 @@ phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int n phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr) { - return memblock_alloc_base_nid(size, align, max_addr, MAX_NUMNODES); + return memblock_alloc_base_nid(size, align, max_addr, NUMA_NO_NODE); } phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr) -- cgit v1.2.3-59-g8ed1b