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Date: Sun, 24 Aug 2014 23:56:02 +0900
From: Akinobu Mita <akinobu.mita@...il.com>
To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Cc: Akinobu Mita <akinobu.mita@...il.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
linux-mm@...ck.org
Subject: [PATCH 1/2] x86: use memblock_alloc_range() or memblock_alloc_base()
Replace memblock_find_in_range() and memblock_reserve() with
memblock_alloc_range() or memblock_alloc_base().
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: x86@...nel.org
Cc: linux-mm@...ck.org
---
arch/x86/kernel/aperture_64.c | 6 +++---
arch/x86/kernel/setup.c | 22 ++++++++++------------
arch/x86/mm/init.c | 7 +++----
arch/x86/mm/numa.c | 4 +---
arch/x86/mm/numa_emulation.c | 5 ++---
arch/x86/realmode/init.c | 3 +--
6 files changed, 20 insertions(+), 27 deletions(-)
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 76164e1..baaa7c9 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -74,14 +74,14 @@ static u32 __init allocate_aperture(void)
* memory. Unfortunately we cannot move it up because that would
* make the IOMMU useless.
*/
- addr = memblock_find_in_range(GART_MIN_ADDR, GART_MAX_ADDR,
- aper_size, aper_size);
+ addr = memblock_alloc_range(aper_size, aper_size,
+ GART_MIN_ADDR, GART_MAX_ADDR);
+
if (!addr) {
pr_err("Cannot allocate aperture memory hole [mem %#010lx-%#010lx] (%uKB)\n",
addr, addr + aper_size - 1, aper_size >> 10);
return 0;
}
- memblock_reserve(addr, aper_size);
pr_info("Mapping aperture over RAM [mem %#010lx-%#010lx] (%uKB)\n",
addr, addr + aper_size - 1, aper_size >> 10);
register_nosave_region(addr >> PAGE_SHIFT,
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 41ead8d..fa609c9 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -327,8 +327,8 @@ static void __init relocate_initrd(void)
char *p, *q;
/* We need to move the initrd down into directly mapped mem */
- relocated_ramdisk = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
- area_size, PAGE_SIZE);
+ relocated_ramdisk = memblock_alloc_base(area_size, PAGE_SIZE,
+ PFN_PHYS(max_pfn_mapped));
if (!relocated_ramdisk)
panic("Cannot find place for new RAMDISK of size %lld\n",
@@ -336,7 +336,6 @@ static void __init relocate_initrd(void)
/* Note: this includes all the mem currently occupied by
the initrd, we rely on that fact to keep the data intact. */
- memblock_reserve(relocated_ramdisk, area_size);
initrd_start = relocated_ramdisk + PAGE_OFFSET;
initrd_end = initrd_start + ramdisk_size;
printk(KERN_INFO "Allocated new RAMDISK: [mem %#010llx-%#010llx]\n",
@@ -545,8 +544,8 @@ static void __init reserve_crashkernel_low(void)
return;
}
- low_base = memblock_find_in_range(low_size, (1ULL<<32),
- low_size, alignment);
+ low_base = memblock_alloc_range(low_size, alignment,
+ low_size, 1ULL << 32);
if (!low_base) {
if (!auto_set)
@@ -555,7 +554,6 @@ static void __init reserve_crashkernel_low(void)
return;
}
- memblock_reserve(low_base, low_size);
pr_info("Reserving %ldMB of low memory at %ldMB for crashkernel (System low RAM: %ldMB)\n",
(unsigned long)(low_size >> 20),
(unsigned long)(low_base >> 20),
@@ -593,10 +591,10 @@ static void __init reserve_crashkernel(void)
/*
* kexec want bzImage is below CRASH_KERNEL_ADDR_MAX
*/
- crash_base = memblock_find_in_range(alignment,
+ crash_base = memblock_alloc_range(crash_size, alignment,
+ alignment,
high ? CRASH_KERNEL_ADDR_HIGH_MAX :
- CRASH_KERNEL_ADDR_LOW_MAX,
- crash_size, alignment);
+ CRASH_KERNEL_ADDR_LOW_MAX);
if (!crash_base) {
pr_info("crashkernel reservation failed - No suitable area found.\n");
@@ -606,14 +604,14 @@ static void __init reserve_crashkernel(void)
} else {
unsigned long long start;
- start = memblock_find_in_range(crash_base,
- crash_base + crash_size, crash_size, 1<<20);
+ start = memblock_alloc_range(crash_size, 1 << 20,
+ crash_base,
+ crash_base + crash_size);
if (start != crash_base) {
pr_info("crashkernel reservation failed - memory is in use.\n");
return;
}
}
- memblock_reserve(crash_base, crash_size);
printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
"for crashkernel (System RAM: %ldMB)\n",
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 66dba36..76f67be 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -61,12 +61,11 @@ __ref void *alloc_low_pages(unsigned int num)
unsigned long ret;
if (min_pfn_mapped >= max_pfn_mapped)
panic("alloc_low_pages: ran out of memory");
- ret = memblock_find_in_range(min_pfn_mapped << PAGE_SHIFT,
- max_pfn_mapped << PAGE_SHIFT,
- PAGE_SIZE * num , PAGE_SIZE);
+ ret = memblock_alloc_range(PAGE_SIZE * num, PAGE_SIZE,
+ min_pfn_mapped << PAGE_SHIFT,
+ max_pfn_mapped << PAGE_SHIFT);
if (!ret)
panic("alloc_low_pages: can not alloc memory");
- memblock_reserve(ret, PAGE_SIZE * num);
pfn = ret >> PAGE_SHIFT;
} else {
pfn = pgt_buf_end;
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index a32b706..f7c0718 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -375,15 +375,13 @@ static int __init numa_alloc_distance(void)
cnt++;
size = cnt * cnt * sizeof(numa_distance[0]);
- phys = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
- size, PAGE_SIZE);
+ phys = memblock_alloc_base(size, PAGE_SIZE, PFN_PHYS(max_pfn_mapped));
if (!phys) {
pr_warning("NUMA: Warning: can't allocate distance table!\n");
/* don't retry until explicitly reset */
numa_distance = (void *)1LU;
return -ENOMEM;
}
- memblock_reserve(phys, size);
numa_distance = __va(phys);
numa_distance_cnt = cnt;
diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index a8f90ce..341d5ae 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -357,13 +357,12 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
if (numa_dist_cnt) {
u64 phys;
- phys = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
- phys_size, PAGE_SIZE);
+ phys = memblock_alloc_base(phys_size, PAGE_SIZE,
+ PFN_PHYS(max_pfn_mapped));
if (!phys) {
pr_warning("NUMA: Warning: can't allocate copy of distance table, disabling emulation\n");
goto no_emu;
}
- memblock_reserve(phys, phys_size);
phys_dist = __va(phys);
for (i = 0; i < numa_dist_cnt; i++)
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index bad628a..7867ae6 100644
--- a/arch/x86/realmode/init.c
+++ b/arch/x86/realmode/init.c
@@ -15,12 +15,11 @@ void __init reserve_real_mode(void)
size_t size = PAGE_ALIGN(real_mode_blob_end - real_mode_blob);
/* Has to be under 1M so we can execute real-mode AP code. */
- mem = memblock_find_in_range(0, 1<<20, size, PAGE_SIZE);
+ mem = memblock_alloc_base(size, PAGE_SIZE, 1 << 20);
if (!mem)
panic("Cannot allocate trampoline\n");
base = __va(mem);
- memblock_reserve(mem, size);
real_mode_header = (struct real_mode_header *) base;
printk(KERN_DEBUG "Base memory trampoline at [%p] %llx size %zu\n",
base, (unsigned long long)mem, size);
--
1.9.1
--
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