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bootmem: fix wrong call parameter for free_bootmem()

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It is strange that alloc_bootmem() returns a virtual address and
free_bootmem() requires a physical address.  Anyway, free_bootmem()'s
first parameter should be physical address.

There are some call sites for free_bootmem() with virtual address.  So fix
them.

[akpm@linux-foundation.org: improve free_bootmem() and free_bootmem_pate() documentation]
Signed-off-by: Joonsoo Kim <js1304@gmail.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joonsoo Kim 2012-12-11 16:03:10 -08:00 committed by Linus Torvalds
parent e9b2e78c6a
commit 81df9bff26
5 changed files with 16 additions and 16 deletions
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4
arch/powerpc/platforms/cell/celleb_pci.c
View File

@ -401,11 +401,11 @@ static int __init celleb_setup_fake_pci_device(struct device_node *node,
} else {
if (config && *config) {
size = 256;
free_bootmem((unsigned long)(*config), size);
free_bootmem(__pa(*config), size);
}
if (res && *res) {
size = sizeof(struct celleb_pci_resource);
free_bootmem((unsigned long)(*res), size);
free_bootmem(__pa(*res), size);
}
}

2
drivers/macintosh/smu.c
View File

@ -565,7 +565,7 @@ int __init smu_init (void)
fail_db_node:
of_node_put(smu->db_node);
fail_bootmem:
free_bootmem((unsigned long)smu, sizeof(struct smu_device));
free_bootmem(__pa(smu), sizeof(struct smu_device));
smu = NULL;
fail_np:
of_node_put(np);

4
include/linux/bootmem.h
View File

@ -51,8 +51,8 @@ extern unsigned long free_all_bootmem(void);
extern void free_bootmem_node(pg_data_t *pgdat,
unsigned long addr,
unsigned long size);
extern void free_bootmem(unsigned long addr, unsigned long size);
extern void free_bootmem_late(unsigned long addr, unsigned long size);
extern void free_bootmem(unsigned long physaddr, unsigned long size);
extern void free_bootmem_late(unsigned long physaddr, unsigned long size);
/*
* Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,

2
lib/cpumask.c
View File

@ -161,6 +161,6 @@ EXPORT_SYMBOL(free_cpumask_var);
*/
void __init free_bootmem_cpumask_var(cpumask_var_t mask)
{
free_bootmem((unsigned long)mask, cpumask_size());
free_bootmem(__pa(mask), cpumask_size());
}
#endif

20
mm/bootmem.c
View File

@ -147,21 +147,21 @@ unsigned long __init init_bootmem(unsigned long start, unsigned long pages)
/*
* free_bootmem_late - free bootmem pages directly to page allocator
* @addr: starting address of the range
* @addr: starting physical address of the range
* @size: size of the range in bytes
*
* This is only useful when the bootmem allocator has already been torn
* down, but we are still initializing the system. Pages are given directly
* to the page allocator, no bootmem metadata is updated because it is gone.
*/
void __init free_bootmem_late(unsigned long addr, unsigned long size)
void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
{
unsigned long cursor, end;
kmemleak_free_part(__va(addr), size);
kmemleak_free_part(__va(physaddr), size);
cursor = PFN_UP(addr);
end = PFN_DOWN(addr + size);
cursor = PFN_UP(physaddr);
end = PFN_DOWN(physaddr + size);
for (; cursor < end; cursor++) {
__free_pages_bootmem(pfn_to_page(cursor), 0);
@ -377,21 +377,21 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
/**
* free_bootmem - mark a page range as usable
* @addr: starting address of the range
* @addr: starting physical address of the range
* @size: size of the range in bytes
*
* Partial pages will be considered reserved and left as they are.
*
* The range must be contiguous but may span node boundaries.
*/
void __init free_bootmem(unsigned long addr, unsigned long size)
void __init free_bootmem(unsigned long physaddr, unsigned long size)
{
unsigned long start, end;
kmemleak_free_part(__va(addr), size);
kmemleak_free_part(__va(physaddr), size);
start = PFN_UP(addr);
end = PFN_DOWN(addr + size);
start = PFN_UP(physaddr);
end = PFN_DOWN(physaddr + size);
mark_bootmem(start, end, 0, 0);
}