linux-kernel - [PATCH v2 21/23] mm/ARM: kernel: Use memblock apis for early memory allocations

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Date:	Mon, 2 Dec 2013 21:27:36 -0500
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	<linux-kernel@...r.kernel.org>
CC:	<linux-arm-kernel@...ts.infradead.org>, <linux-mm@...ck.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Yinghai Lu <yinghai@...nel.org>, Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH v2 21/23] mm/ARM: kernel: Use memblock apis for early memory allocations

Switch to memblock interfaces for early memory allocator instead of
bootmem allocator. No functional change in beahvior than what it is
in current code from bootmem users points of view.

Archs already converted to NO_BOOTMEM now directly use memblock
interfaces instead of bootmem wrappers build on top of memblock. And the
archs which still uses bootmem, these new apis just fallback to exiting
bootmem APIs.

Cc: Yinghai Lu <yinghai@...nel.org>
Cc: Tejun Heo <tj@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...com>
---
 arch/arm/kernel/devtree.c |    2 +-
 arch/arm/kernel/setup.c   |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index 739c3df..85b9b3b 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -33,7 +33,7 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
 
 void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
 {
-	return alloc_bootmem_align(size, align);
+	return memblock_virt_alloc_align(size, align);
 }
 
 void __init arm_dt_memblock_reserve(void)
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 6a1b8a8..0d3c6aa 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -717,7 +717,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
 	kernel_data.end     = virt_to_phys(_end - 1);
 
 	for_each_memblock(memory, region) {
-		res = alloc_bootmem_low(sizeof(*res));
+		res = memblock_virt_alloc(sizeof(*res));
 		res->name  = "System RAM";
 		res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
 		res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
-- 
1.7.9.5

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