[PATCH v2 17/17] memblock: use separate iterators for memory and reserved regions
From: Mike Rapoport <rppt@kernel.org>
Date: 2020-08-02 16:39:25
Also in:
linux-arch, linux-iommu, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, linuxppc-dev, lkml, sparclinux
Subsystem:
arm64 port (aarch64 architecture), clang-format file, memblock and memory management initialization, memory management, memory management - page allocator, mips, the rest, x86 architecture (32-bit and 64-bit), x86 mm · Maintainers:
Catalin Marinas, Will Deacon, Miguel Ojeda, Mike Rapoport, Andrew Morton, Vlastimil Babka, Thomas Bogendoerfer, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, Andy Lutomirski, Peter Zijlstra
From: Mike Rapoport <redacted> for_each_memblock() is used to iterate over memblock.memory in a few places that use data from memblock_region rather than the memory ranges. Introduce separate for_each_mem_region() and for_each_reserved_mem_region() to improve encapsulation of memblock internals from its users. Signed-off-by: Mike Rapoport <redacted> --- .clang-format | 3 ++- arch/arm64/kernel/setup.c | 2 +- arch/arm64/mm/numa.c | 2 +- arch/mips/netlogic/xlp/setup.c | 2 +- arch/x86/mm/numa.c | 2 +- include/linux/memblock.h | 19 ++++++++++++++++--- mm/memblock.c | 4 ++-- mm/page_alloc.c | 8 ++++---- 8 files changed, 28 insertions(+), 14 deletions(-)
diff --git a/.clang-format b/.clang-format
index e28a849a1c58..cff71d345456 100644
--- a/.clang-format
+++ b/.clang-format@@ -201,7 +201,7 @@ ForEachMacros: - 'for_each_matching_node' - 'for_each_matching_node_and_match' - 'for_each_member' - - 'for_each_memblock' + - 'for_each_mem_region' - 'for_each_memblock_type' - 'for_each_memcg_cache_index' - 'for_each_mem_pfn_range'
@@ -267,6 +267,7 @@ ForEachMacros: - 'for_each_property_of_node' - 'for_each_registered_fb' - 'for_each_reserved_mem_range' + - 'for_each_reserved_mem_region' - 'for_each_rtd_codec_dais' - 'for_each_rtd_codec_dais_rollback' - 'for_each_rtd_components'
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index f3aec7244aab..52ea2f1a7184 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c@@ -217,7 +217,7 @@ static void __init request_standard_resources(void) if (!standard_resources) panic("%s: Failed to allocate %zu bytes\n", __func__, res_size); - for_each_memblock(memory, region) { + for_each_mem_region(region) { res = &standard_resources[i++]; if (memblock_is_nomap(region)) { res->name = "reserved";
diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
index 0cbdbcc885fb..f121e42246a6 100644
--- a/arch/arm64/mm/numa.c
+++ b/arch/arm64/mm/numa.c@@ -350,7 +350,7 @@ static int __init numa_register_nodes(void) struct memblock_region *mblk; /* Check that valid nid is set to memblks */ - for_each_memblock(memory, mblk) { + for_each_mem_region(mblk) { int mblk_nid = memblock_get_region_node(mblk); if (mblk_nid == NUMA_NO_NODE || mblk_nid >= MAX_NUMNODES) {
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
index 1a0fc5b62ba4..6e3102bcd2f1 100644
--- a/arch/mips/netlogic/xlp/setup.c
+++ b/arch/mips/netlogic/xlp/setup.c@@ -70,7 +70,7 @@ static void nlm_fixup_mem(void) const int pref_backup = 512; struct memblock_region *mem; - for_each_memblock(memory, mem) { + for_each_mem_region(mem) { memblock_remove(mem->base + mem->size - pref_backup, pref_backup); }
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 8ee952038c80..fe6ea18d6923 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c@@ -516,7 +516,7 @@ static void __init numa_clear_kernel_node_hotplug(void) * memory ranges, because quirks such as trim_snb_memory() * reserve specific pages for Sandy Bridge graphics. ] */ - for_each_memblock(reserved, mb_region) { + for_each_reserved_mem_region(mb_region) { int nid = memblock_get_region_node(mb_region); if (nid != MAX_NUMNODES)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 9e51b3fd4134..a6970e058bd7 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h@@ -522,9 +522,22 @@ static inline unsigned long memblock_region_reserved_end_pfn(const struct memblo return PFN_UP(reg->base + reg->size); } -#define for_each_memblock(memblock_type, region) \ - for (region = memblock.memblock_type.regions; \ - region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \ +/** + * for_each_mem_region - itereate over registered memory regions + * @region: loop variable + */ +#define for_each_mem_region(region) \ + for (region = memblock.memory.regions; \ + region < (memblock.memory.regions + memblock.memory.cnt); \ + region++) + +/** + * for_each_reserved_mem_region - itereate over reserved memory regions + * @region: loop variable + */ +#define for_each_reserved_mem_region(region) \ + for (region = memblock.reserved.regions; \ + region < (memblock.reserved.regions + memblock.reserved.cnt); \ region++) extern void *alloc_large_system_hash(const char *tablename,
diff --git a/mm/memblock.c b/mm/memblock.c
index dadf579f7c53..7d30db5c539f 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c@@ -1653,7 +1653,7 @@ static phys_addr_t __init_memblock __find_max_addr(phys_addr_t limit) * the memory memblock regions, if the @limit exceeds the total size * of those regions, max_addr will keep original value PHYS_ADDR_MAX */ - for_each_memblock(memory, r) { + for_each_mem_region(r) { if (limit <= r->size) { max_addr = r->base + limit; break;
@@ -1823,7 +1823,7 @@ void __init_memblock memblock_trim_memory(phys_addr_t align) phys_addr_t start, end, orig_start, orig_end; struct memblock_region *r; - for_each_memblock(memory, r) { + for_each_mem_region(r) { orig_start = r->base; orig_end = r->base + r->size; start = round_up(orig_start, align);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 95af111d69d3..948c7a754cdb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c@@ -5927,7 +5927,7 @@ overlap_memmap_init(unsigned long zone, unsigned long *pfn) if (mirrored_kernelcore && zone == ZONE_MOVABLE) { if (!r || *pfn >= memblock_region_memory_end_pfn(r)) { - for_each_memblock(memory, r) { + for_each_mem_region(r) { if (*pfn < memblock_region_memory_end_pfn(r)) break; }
@@ -6528,7 +6528,7 @@ static unsigned long __init zone_absent_pages_in_node(int nid, unsigned long start_pfn, end_pfn; struct memblock_region *r; - for_each_memblock(memory, r) { + for_each_mem_region(r) { start_pfn = clamp(memblock_region_memory_base_pfn(r), zone_start_pfn, zone_end_pfn); end_pfn = clamp(memblock_region_memory_end_pfn(r),
@@ -7122,7 +7122,7 @@ static void __init find_zone_movable_pfns_for_nodes(void) * options. */ if (movable_node_is_enabled()) { - for_each_memblock(memory, r) { + for_each_mem_region(r) { if (!memblock_is_hotpluggable(r)) continue;
@@ -7143,7 +7143,7 @@ static void __init find_zone_movable_pfns_for_nodes(void) if (mirrored_kernelcore) { bool mem_below_4gb_not_mirrored = false; - for_each_memblock(memory, r) { + for_each_mem_region(r) { if (memblock_is_mirror(r)) continue;
--
2.26.2
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