From 940519f0c8b757fdcbc5d14c93cdaada20ded14c Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Mon, 13 May 2019 17:21:26 -0700 Subject: mm, memory_hotplug: provide a more generic restrictions for memory hotplug arch_add_memory, __add_pages take a want_memblock which controls whether the newly added memory should get the sysfs memblock user API (e.g. ZONE_DEVICE users do not want/need this interface). Some callers even want to control where do we allocate the memmap from by configuring altmap. Add a more generic hotplug context for arch_add_memory and __add_pages. struct mhp_restrictions contains flags which contains additional features to be enabled by the memory hotplug (MHP_MEMBLOCK_API currently) and altmap for alternative memmap allocator. This patch shouldn't introduce any functional change. [akpm@linux-foundation.org: build fix] Link: http://lkml.kernel.org/r/20190408082633.2864-3-osalvador@suse.de Signed-off-by: Michal Hocko Signed-off-by: Oscar Salvador Cc: Dan Williams Cc: David Hildenbrand Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/powerpc/mm/mem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/powerpc/mm') diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 20266898f3a8..de5c591a550d 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -109,8 +109,8 @@ int __weak remove_section_mapping(unsigned long start, unsigned long end) return -ENODEV; } -int __ref arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap, - bool want_memblock) +int __ref arch_add_memory(int nid, u64 start, u64 size, + struct mhp_restrictions *restrictions) { unsigned long start_pfn = start >> PAGE_SHIFT; unsigned long nr_pages = size >> PAGE_SHIFT; @@ -127,7 +127,7 @@ int __ref arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altm } flush_inval_dcache_range(start, start + size); - return __add_pages(nid, start_pfn, nr_pages, altmap, want_memblock); + return __add_pages(nid, start_pfn, nr_pages, restrictions); } #ifdef CONFIG_MEMORY_HOTREMOVE -- cgit v1.2.3