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memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones

Browse source 
Other than sanity check and debug message, the x86 specific version of
memblock reserve/free functions are simple wrappers around the generic
versions - memblock_reserve/free().

This patch adds debug messages with caller identification to the
generic versions and replaces x86 specific ones and kills them.
arch/x86/include/asm/memblock.h and arch/x86/mm/memblock.c are empty
after this change and removed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1310462166-31469-14-git-send-email-tj@kernel.org
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Tejun Heo 2011-07-12 11:16:06 +02:00 committed by H. Peter Anvin
parent c378ddd53f
commit 24aa07882b
22 changed files with 48 additions and 97 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
arch/x86/include/asm/memblock.h
View file

@ -1,7 +0,0 @@
#ifndef _X86_MEMBLOCK_H
#define _X86_MEMBLOCK_H
void memblock_x86_reserve_range(u64 start, u64 end, char *name);
void memblock_x86_free_range(u64 start, u64 end);
#endif

2
arch/x86/kernel/aperture_64.c
View file

@ -94,7 +94,7 @@ static u32 __init allocate_aperture(void)
addr, aper_size>>10);
return 0;
}
memblock_x86_reserve_range(addr, addr + aper_size, "aperture64");
memblock_reserve(addr, aper_size);
/*
* Kmemleak should not scan this block as it may not be mapped via the
* kernel direct mapping.

2
arch/x86/kernel/check.c
View file

@ -91,7 +91,7 @@ void __init setup_bios_corruption_check(void)
if (start >= end)
continue;
memblock_x86_reserve_range(start, end, "SCAN RAM");
memblock_reserve(start, end - start);
scan_areas[num_scan_areas].addr = start;
scan_areas[num_scan_areas].size = end - start;

2
arch/x86/kernel/head.c
View file

@ -52,5 +52,5 @@ void __init reserve_ebda_region(void)
lowmem = 0x9f000;
/* reserve all memory between lowmem and the 1MB mark */
memblock_x86_reserve_range(lowmem, 0x100000, "* BIOS reserved");
memblock_reserve(lowmem, 0x100000 - lowmem);
}

5
arch/x86/kernel/head32.c
View file

@ -33,7 +33,8 @@ void __init i386_start_kernel(void)
{
memblock_init();
memblock_x86_reserve_range(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS");
memblock_reserve(__pa_symbol(&_text),
__pa_symbol(&__bss_stop) - __pa_symbol(&_text));
#ifdef CONFIG_BLK_DEV_INITRD
/* Reserve INITRD */
@ -42,7 +43,7 @@ void __init i386_start_kernel(void)
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
u64 ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size);
memblock_x86_reserve_range(ramdisk_image, ramdisk_end, "RAMDISK");
memblock_reserve(ramdisk_image, ramdisk_end - ramdisk_image);
}
#endif

5
arch/x86/kernel/head64.c
View file

@ -100,7 +100,8 @@ void __init x86_64_start_reservations(char *real_mode_data)
memblock_init();
memblock_x86_reserve_range(__pa_symbol(&_text), __pa_symbol(&__bss_stop), "TEXT DATA BSS");
memblock_reserve(__pa_symbol(&_text),
__pa_symbol(&__bss_stop) - __pa_symbol(&_text));
#ifdef CONFIG_BLK_DEV_INITRD
/* Reserve INITRD */
@ -109,7 +110,7 @@ void __init x86_64_start_reservations(char *real_mode_data)
unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
unsigned long ramdisk_size = boot_params.hdr.ramdisk_size;
unsigned long ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size);
memblock_x86_reserve_range(ramdisk_image, ramdisk_end, "RAMDISK");
memblock_reserve(ramdisk_image, ramdisk_end - ramdisk_image);
}
#endif

6
arch/x86/kernel/mpparse.c
View file

@ -564,9 +564,7 @@ void __init default_get_smp_config(unsigned int early)
static void __init smp_reserve_memory(struct mpf_intel *mpf)
{
unsigned long size = get_mpc_size(mpf->physptr);
memblock_x86_reserve_range(mpf->physptr, mpf->physptr+size, "* MP-table mpc");
memblock_reserve(mpf->physptr, get_mpc_size(mpf->physptr));
}
static int __init smp_scan_config(unsigned long base, unsigned long length)
@ -595,7 +593,7 @@ static int __init smp_scan_config(unsigned long base, unsigned long length)
mpf, (u64)virt_to_phys(mpf));
mem = virt_to_phys(mpf);
memblock_x86_reserve_range(mem, mem + sizeof(*mpf), "* MP-table mpf");
memblock_reserve(mem, sizeof(*mpf));
if (mpf->physptr)
smp_reserve_memory(mpf);

17
arch/x86/kernel/setup.c
View file

@ -306,7 +306,8 @@ static void __init cleanup_highmap(void)
static void __init reserve_brk(void)
{
if (_brk_end > _brk_start)
memblock_x86_reserve_range(__pa(_brk_start), __pa(_brk_end), "BRK");
memblock_reserve(__pa(_brk_start),
__pa(_brk_end) - __pa(_brk_start));
/* Mark brk area as locked down and no longer taking any
new allocations */
@ -337,7 +338,7 @@ static void __init relocate_initrd(void)
/* Note: this includes all the lowmem currently occupied by
the initrd, we rely on that fact to keep the data intact. */
memblock_x86_reserve_range(ramdisk_here, ramdisk_here + area_size, "NEW RAMDISK");
memblock_reserve(ramdisk_here, area_size);
initrd_start = ramdisk_here + PAGE_OFFSET;
initrd_end = initrd_start + ramdisk_size;
printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n",
@ -393,7 +394,7 @@ static void __init reserve_initrd(void)
initrd_start = 0;
if (ramdisk_size >= (end_of_lowmem>>1)) {
memblock_x86_free_range(ramdisk_image, ramdisk_end);
memblock_free(ramdisk_image, ramdisk_end - ramdisk_image);
printk(KERN_ERR "initrd too large to handle, "
"disabling initrd\n");
return;
@ -416,7 +417,7 @@ static void __init reserve_initrd(void)
relocate_initrd();
memblock_x86_free_range(ramdisk_image, ramdisk_end);
memblock_free(ramdisk_image, ramdisk_end - ramdisk_image);
}
#else
static void __init reserve_initrd(void)
@ -490,15 +491,13 @@ static void __init memblock_x86_reserve_range_setup_data(void)
{
struct setup_data *data;
u64 pa_data;
char buf[32];
if (boot_params.hdr.version < 0x0209)
return;
pa_data = boot_params.hdr.setup_data;
while (pa_data) {
data = early_memremap(pa_data, sizeof(*data));
sprintf(buf, "setup data %x", data->type);
memblock_x86_reserve_range(pa_data, pa_data+sizeof(*data)+data->len, buf);
memblock_reserve(pa_data, sizeof(*data) + data->len);
pa_data = data->next;
early_iounmap(data, sizeof(*data));
}
@ -568,7 +567,7 @@ static void __init reserve_crashkernel(void)
return;
}
}
memblock_x86_reserve_range(crash_base, crash_base + crash_size, "CRASH KERNEL");
memblock_reserve(crash_base, crash_size);
printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
"for crashkernel (System RAM: %ldMB)\n",
@ -626,7 +625,7 @@ static __init void reserve_ibft_region(void)
addr = find_ibft_region(&size);
if (size)
memblock_x86_reserve_range(addr, addr + size, "* ibft");
memblock_reserve(addr, size);
}
static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10;

2
arch/x86/kernel/trampoline.c
View file

@ -18,7 +18,7 @@ void __init setup_trampolines(void)
panic("Cannot allocate trampoline\n");
x86_trampoline_base = __va(mem);
memblock_x86_reserve_range(mem, mem + size, "TRAMPOLINE");
memblock_reserve(mem, size);
printk(KERN_DEBUG "Base memory trampoline at [%p] %llx size %zu\n",
x86_trampoline_base, (unsigned long long)mem, size);

2
arch/x86/mm/Makefile
View file

@ -27,6 +27,4 @@ obj-$(CONFIG_AMD_NUMA) += amdtopology.o
obj-$(CONFIG_ACPI_NUMA) += srat.o
obj-$(CONFIG_NUMA_EMU) += numa_emulation.o
obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
obj-$(CONFIG_MEMTEST) += memtest.o

6
arch/x86/mm/init.c
View file

@ -81,7 +81,7 @@ static void __init find_early_table_space(unsigned long end, int use_pse,
void __init native_pagetable_reserve(u64 start, u64 end)
{
memblock_x86_reserve_range(start, end, "PGTABLE");
memblock_reserve(start, end - start);
}
struct map_range {
@ -280,8 +280,8 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
* pgt_buf_end) and free the other ones (pgt_buf_end - pgt_buf_top)
* so that they can be reused for other purposes.
*
* On native it just means calling memblock_x86_reserve_range, on Xen it
* also means marking RW the pagetable pages that we allocated before
* On native it just means calling memblock_reserve, on Xen it also
* means marking RW the pagetable pages that we allocated before
* but that haven't been used.
*
* In fact on xen we mark RO the whole range pgt_buf_start -

34
arch/x86/mm/memblock.c
View file

@ -1,34 +0,0 @@
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/memblock.h>
#include <linux/bootmem.h>
#include <linux/mm.h>
#include <linux/range.h>
void __init memblock_x86_reserve_range(u64 start, u64 end, char *name)
{
if (start == end)
return;
if (WARN_ONCE(start > end, "memblock_x86_reserve_range: wrong range [%#llx, %#llx)\n", start, end))
return;
memblock_dbg(" memblock_x86_reserve_range: [%#010llx-%#010llx] %16s\n", start, end - 1, name);
memblock_reserve(start, end - start);
}
void __init memblock_x86_free_range(u64 start, u64 end)
{
if (start == end)
return;
if (WARN_ONCE(start > end, "memblock_x86_free_range: wrong range [%#llx, %#llx)\n", start, end))
return;
memblock_dbg(" memblock_x86_free_range: [%#010llx-%#010llx]\n", start, end - 1);
memblock_free(start, end - start);
}

2
arch/x86/mm/memtest.c
View file

@ -34,7 +34,7 @@ static void __init reserve_bad_mem(u64 pattern, u64 start_bad, u64 end_bad)
(unsigned long long) pattern,
(unsigned long long) start_bad,
(unsigned long long) end_bad);
memblock_x86_reserve_range(start_bad, end_bad, "BAD RAM");
memblock_reserve(start_bad, end_bad - start_bad);
}
static void __init memtest(u64 pattern, u64 start_phys, u64 size)

5
arch/x86/mm/numa.c
View file

@ -364,8 +364,7 @@ void __init numa_reset_distance(void)
/* numa_distance could be 1LU marking allocation failure, test cnt */
if (numa_distance_cnt)
memblock_x86_free_range(__pa(numa_distance),
__pa(numa_distance) + size);
memblock_free(__pa(numa_distance), size);
numa_distance_cnt = 0;
numa_distance = NULL; /* enable table creation */
}
@ -394,7 +393,7 @@ static int __init numa_alloc_distance(void)
numa_distance = (void *)1LU;
return -ENOMEM;
}
memblock_x86_reserve_range(phys, phys + size, "NUMA DIST");
memblock_reserve(phys, size);
numa_distance = __va(phys);
numa_distance_cnt = cnt;

6
arch/x86/mm/numa_32.c
View file

@ -204,7 +204,7 @@ void __init init_alloc_remap(int nid, u64 start, u64 end)
size, nid);
return;
}
memblock_x86_reserve_range(node_pa, node_pa + size, "KVA RAM");
memblock_reserve(node_pa, size);
remap_pa = memblock_find_in_range(min_low_pfn << PAGE_SHIFT,
max_low_pfn << PAGE_SHIFT,
@ -212,10 +212,10 @@ void __init init_alloc_remap(int nid, u64 start, u64 end)
if (!remap_pa) {
pr_warning("remap_alloc: failed to allocate %lu bytes remap area for node %d\n",
size, nid);
memblock_x86_free_range(node_pa, node_pa + size);
memblock_free(node_pa, size);
return;
}
memblock_x86_reserve_range(remap_pa, remap_pa + size, "KVA PG");
memblock_reserve(remap_pa, size);
remap_va = phys_to_virt(remap_pa);
/* perform actual remap */

4
arch/x86/mm/numa_emulation.c
View file

@ -361,7 +361,7 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
pr_warning("NUMA: Warning: can't allocate copy of distance table, disabling emulation\n");
goto no_emu;
}
memblock_x86_reserve_range(phys, phys + phys_size, "TMP NUMA DIST");
memblock_reserve(phys, phys_size);
phys_dist = __va(phys);
for (i = 0; i < numa_dist_cnt; i++)
@ -430,7 +430,7 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
/* free the copied physical distance table */
if (phys_dist)
memblock_x86_free_range(__pa(phys_dist), __pa(phys_dist) + phys_size);
memblock_free(__pa(phys_dist), phys_size);
return;
no_emu:

6
arch/x86/platform/efi/efi.c
View file

@ -280,8 +280,7 @@ void __init efi_memblock_x86_reserve_range(void)
boot_params.efi_info.efi_memdesc_size;
memmap.desc_version = boot_params.efi_info.efi_memdesc_version;
memmap.desc_size = boot_params.efi_info.efi_memdesc_size;
memblock_x86_reserve_range(pmap, pmap + memmap.nr_map * memmap.desc_size,
"EFI memmap");
memblock_reserve(pmap, memmap.nr_map * memmap.desc_size);
}
#if EFI_DEBUG
@ -332,8 +331,7 @@ void __init efi_reserve_boot_services(void)
"[0x%010llx-0x%010llx]\n",
start, start+size-1);
} else
memblock_x86_reserve_range(start, start+size,
"EFI Boot");
memblock_reserve(start, size);
}
}

12
arch/x86/xen/mmu.c
View file

@ -1720,10 +1720,8 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd,
__xen_write_cr3(true, __pa(pgd));
xen_mc_issue(PARAVIRT_LAZY_CPU);
memblock_x86_reserve_range(__pa(xen_start_info->pt_base),
__pa(xen_start_info->pt_base +
xen_start_info->nr_pt_frames * PAGE_SIZE),
"XEN PAGETABLES");
memblock_reserve(__pa(xen_start_info->pt_base),
xen_start_info->nr_pt_frames * PAGE_SIZE);
return pgd;
}
@ -1799,10 +1797,8 @@ pgd_t * __init xen_setup_kernel_pagetable(pgd_t *pgd,
PFN_DOWN(__pa(initial_page_table)));
xen_write_cr3(__pa(initial_page_table));
memblock_x86_reserve_range(__pa(xen_start_info->pt_base),
__pa(xen_start_info->pt_base +
xen_start_info->nr_pt_frames * PAGE_SIZE),
"XEN PAGETABLES");
memblock_reserve(__pa(xen_start_info->pt_base),
xen_start_info->nr_pt_frames * PAGE_SIZE));
return initial_page_table;
}

7
arch/x86/xen/setup.c
View file

@ -63,7 +63,7 @@ static void __init xen_add_extra_mem(unsigned long pages)
e820_add_region(extra_start, size, E820_RAM);
sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
memblock_x86_reserve_range(extra_start, extra_start + size, "XEN EXTRA");
memblock_reserve(extra_start, size);
xen_extra_mem_size += size;
@ -287,9 +287,8 @@ char * __init xen_memory_setup(void)
* - xen_start_info
* See comment above "struct start_info" in <xen/interface/xen.h>
*/
memblock_x86_reserve_range(__pa(xen_start_info->mfn_list),
__pa(xen_start_info->pt_base),
"XEN START INFO");
memblock_reserve(__pa(xen_start_info->mfn_list),
xen_start_info->pt_base - xen_start_info->mfn_list);
sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);

2
include/linux/memblock.h
View file

@ -17,8 +17,6 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/memblock.h>
#define INIT_MEMBLOCK_REGIONS 128
struct memblock_region {

5
mm/memblock.c
View file

@ -449,6 +449,9 @@ long __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size)
long __init_memblock memblock_free(phys_addr_t base, phys_addr_t size)
{
memblock_dbg(" memblock_free: [%#016llx-%#016llx] %pF\n",
base, base + size, (void *)_RET_IP_);
return __memblock_remove(&memblock.reserved, base, size);
}
@ -456,6 +459,8 @@ long __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size)
{
struct memblock_type *_rgn = &memblock.reserved;
memblock_dbg("memblock_reserve: [%#016llx-%#016llx] %pF\n",
base, base + size, (void *)_RET_IP_);
BUG_ON(0 == size);
return memblock_add_region(_rgn, base, size);

6
mm/nobootmem.c
View file

@ -47,7 +47,7 @@ static void * __init __alloc_memory_core_early(int nid, u64 size, u64 align,
ptr = phys_to_virt(addr);
memset(ptr, 0, size);
memblock_x86_reserve_range(addr, addr + size, "BOOTMEM");
memblock_reserve(addr, size);
/*
* The min_count is set to 0 so that bootmem allocated blocks
* are never reported as leaks.
@ -175,7 +175,7 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
unsigned long size)
{
kmemleak_free_part(__va(physaddr), size);
memblock_x86_free_range(physaddr, physaddr + size);
memblock_free(physaddr, size);
}
/**
@ -190,7 +190,7 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
void __init free_bootmem(unsigned long addr, unsigned long size)
{
kmemleak_free_part(__va(addr), size);
memblock_x86_free_range(addr, addr + size);
memblock_free(addr, size);
}
static void * __init ___alloc_bootmem_nopanic(unsigned long size,