From: Grygorii Strashko <[email protected]> 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 <[email protected]>. Cc: Yinghai Lu <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Grygorii Strashko <[email protected]> Signed-off-by: Santosh Shilimkar <[email protected]> --- include/linux/memblock.h | 4 ++-- mm/memblock.c | 28 +++++++++++++++++++--------- mm/nobootmem.c | 8 ++++---- 3 files changed, 25 insertions(+), 15 deletions(-) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index dca4533..8607429 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -88,7 +88,7 @@ void __next_free_mem_range(u64 *idx, int nid, phys_addr_t *out_start, /** * for_each_free_mem_range - iterate through free memblock areas * @i: u64 used as loop variable - * @nid: node selector, %MAX_NUMNODES for all nodes + * @nid: node selector, %NUMA_NO_NODE for all nodes * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL * @p_nid: ptr to int for nid of the range, can be %NULL @@ -108,7 +108,7 @@ void __next_free_mem_range_rev(u64 *idx, int nid, phys_addr_t *out_start, /** * for_each_free_mem_range_reverse - rev-iterate through free memblock areas * @i: u64 used as loop variable - * @nid: node selector, %MAX_NUMNODES for all nodes + * @nid: node selector, %NUMA_NO_NODE for all nodes * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL * @p_nid: ptr to int for nid of the range, can be %NULL diff --git a/mm/memblock.c b/mm/memblock.c index 8786503..900057b 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -91,7 +91,7 @@ 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. * @@ -123,7 +123,7 @@ __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. * @@ -158,7 +158,7 @@ __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. * @@ -239,7 +239,7 @@ 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) @@ -677,7 +677,7 @@ int __init_memblock memblock_reserve(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 @@ -705,6 +705,11 @@ 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]; @@ -712,7 +717,7 @@ 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 */ @@ -753,7 +758,7 @@ 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 @@ -768,6 +773,11 @@ 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; @@ -780,7 +790,7 @@ 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; /* scan areas before each reservation for intersection */ @@ -903,7 +913,7 @@ 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) diff --git a/mm/nobootmem.c b/mm/nobootmem.c index 59777e0..19121ce 100644 --- a/mm/nobootmem.c +++ b/mm/nobootmem.c @@ -117,7 +117,7 @@ static unsigned long __init free_low_memory_core_early(void) phys_addr_t start, end, size; u64 i; - for_each_free_mem_range(i, MAX_NUMNODES, &start, &end, NULL) + for_each_free_mem_range(i, NUMA_NO_NODE, &start, &end, NULL) count += __free_memory_core(start, end); /* free range that is used for reserved array if we allocate it */ @@ -161,7 +161,7 @@ unsigned long __init free_all_bootmem(void) reset_all_zones_managed_pages(); /* - * We need to use MAX_NUMNODES instead of NODE_DATA(0)->node_id + * We need to use NUMA_NO_NODE instead of NODE_DATA(0)->node_id * because in some case like Node0 doesn't have RAM installed * low ram will be on Node1 */ @@ -215,7 +215,7 @@ static void * __init ___alloc_bootmem_nopanic(unsigned long size, restart: - ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align, goal, limit); + ptr = __alloc_memory_core_early(NUMA_NO_NODE, size, align, goal, limit); if (ptr) return ptr; @@ -299,7 +299,7 @@ again: if (ptr) return ptr; - ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align, + ptr = __alloc_memory_core_early(NUMA_NO_NODE, size, align, goal, limit); if (ptr) return ptr; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
