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Change-Id: I37ade764d873c701b35eac5881eb40412ba64a86
Story: 2002801
Task: 22687
Signed-off-by: Scott Little <scott.little@windriver.com>
97 lines
3.8 KiB
Diff
97 lines
3.8 KiB
Diff
From b4007dff3d6d7fc27d8b3431213202fb9c34793d Mon Sep 17 00:00:00 2001
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Message-Id: <b4007dff3d6d7fc27d8b3431213202fb9c34793d.1527544850.git.Jim.Somerville@windriver.com>
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In-Reply-To: <b6ceef1c915827b50ce3f76da4dc47f3eb768b44.1527544850.git.Jim.Somerville@windriver.com>
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References: <b6ceef1c915827b50ce3f76da4dc47f3eb768b44.1527544850.git.Jim.Somerville@windriver.com>
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From: Akinobu Mita <akinobu.mita@gmail.com>
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Date: Tue, 31 May 2016 16:07:55 -0400
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Subject: [PATCH 09/26] memblock: introduce memblock_alloc_range()
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Commit 2bfc2862c4fe38379a2fb2cfba33fad32ccb4ff4 upstream
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Backported-by: Nam Ninh <nam.ninh@windriver.com>
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This introduces memblock_alloc_range() which allocates memblock from the
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specified range of physical address. I would like to use this function
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to specify the location of CMA.
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Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
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Cc: Marek Szyprowski <m.szyprowski@samsung.com>
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Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Cc: David Woodhouse <dwmw2@infradead.org>
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Cc: Don Dutile <ddutile@redhat.com>
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Cc: Thomas Gleixner <tglx@linutronix.de>
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Cc: Ingo Molnar <mingo@redhat.com>
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Cc: "H. Peter Anvin" <hpa@zytor.com>
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Cc: Andi Kleen <andi@firstfloor.org>
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Cc: Yinghai Lu <yinghai@kernel.org>
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Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
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---
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include/linux/memblock.h | 2 ++
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mm/memblock.c | 22 ++++++++++++++++++----
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2 files changed, 20 insertions(+), 4 deletions(-)
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diff --git a/include/linux/memblock.h b/include/linux/memblock.h
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index 5a439c9..d6bcbef 100644
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--- a/include/linux/memblock.h
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+++ b/include/linux/memblock.h
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@@ -304,6 +304,8 @@ static inline bool memblock_bottom_up(void) { return false; }
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#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
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#define MEMBLOCK_ALLOC_ACCESSIBLE 0
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+phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
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+ phys_addr_t start, phys_addr_t end);
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phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
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phys_addr_t max_addr);
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phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
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diff --git a/mm/memblock.c b/mm/memblock.c
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index fbc8071..ff910a4 100644
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--- a/mm/memblock.c
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+++ b/mm/memblock.c
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@@ -1120,9 +1120,9 @@ int __init_memblock memblock_set_node(phys_addr_t base, phys_addr_t size,
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}
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#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
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-static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
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- phys_addr_t align, phys_addr_t max_addr,
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- int nid, ulong flags)
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+static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
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+ phys_addr_t align, phys_addr_t start,
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+ phys_addr_t end, int nid, ulong flags)
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{
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phys_addr_t found;
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@@ -1132,7 +1132,7 @@ static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
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/* align @size to avoid excessive fragmentation on reserved array */
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size = round_up(size, align);
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- found = memblock_find_in_range_node(size, align, 0, max_addr, nid,
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+ found = memblock_find_in_range_node(size, align, start, end, nid,
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flags);
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if (found && !memblock_reserve(found, size))
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return found;
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@@ -1140,6 +1140,20 @@ static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
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return 0;
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}
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+phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
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+ phys_addr_t start, phys_addr_t end)
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+{
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+ ulong flags = choose_memblock_flags();
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+ return memblock_alloc_range_nid(size, align, start, end, NUMA_NO_NODE, flags);
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+}
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+
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+static phys_addr_t __init memblock_alloc_base_nid(phys_addr_t size,
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+ phys_addr_t align, phys_addr_t max_addr,
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+ int nid, ulong flags)
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+{
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+ return memblock_alloc_range_nid(size, align, 0, max_addr, nid, flags);
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+}
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+
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phys_addr_t __init memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid)
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{
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ulong flags = choose_memblock_flags();
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--
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1.8.3.1
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