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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2014-01-21 15:50:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-21 16:19:47 -0800
commit999c17e3de4855af4e829c0871ad32fc76a93991 (patch)
tree5cf6df6899637182bca35591c6e5812b75c20002 /mm
parent0d036e9e33df8befa9348683ba68258fee7f0a00 (diff)
downloadop-kernel-dev-999c17e3de4855af4e829c0871ad32fc76a93991.zip
op-kernel-dev-999c17e3de4855af4e829c0871ad32fc76a93991.tar.gz
mm/percpu.c: 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. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Paul Walmsley <paul@pwsan.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Russell King <linux@arm.linux.org.uk> Cc: Tejun Heo <tj@kernel.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/percpu.c38
1 files changed, 22 insertions, 16 deletions
diff --git a/mm/percpu.c b/mm/percpu.c
index 0d10def..65fd8a7 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1063,7 +1063,7 @@ struct pcpu_alloc_info * __init pcpu_alloc_alloc_info(int nr_groups,
__alignof__(ai->groups[0].cpu_map[0]));
ai_size = base_size + nr_units * sizeof(ai->groups[0].cpu_map[0]);
- ptr = alloc_bootmem_nopanic(PFN_ALIGN(ai_size));
+ ptr = memblock_virt_alloc_nopanic(PFN_ALIGN(ai_size), 0);
if (!ptr)
return NULL;
ai = ptr;
@@ -1088,7 +1088,7 @@ struct pcpu_alloc_info * __init pcpu_alloc_alloc_info(int nr_groups,
*/
void __init pcpu_free_alloc_info(struct pcpu_alloc_info *ai)
{
- free_bootmem(__pa(ai), ai->__ai_size);
+ memblock_free_early(__pa(ai), ai->__ai_size);
}
/**
@@ -1246,10 +1246,12 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
PCPU_SETUP_BUG_ON(pcpu_verify_alloc_info(ai) < 0);
/* process group information and build config tables accordingly */
- group_offsets = alloc_bootmem(ai->nr_groups * sizeof(group_offsets[0]));
- group_sizes = alloc_bootmem(ai->nr_groups * sizeof(group_sizes[0]));
- unit_map = alloc_bootmem(nr_cpu_ids * sizeof(unit_map[0]));
- unit_off = alloc_bootmem(nr_cpu_ids * sizeof(unit_off[0]));
+ group_offsets = memblock_virt_alloc(ai->nr_groups *
+ sizeof(group_offsets[0]), 0);
+ group_sizes = memblock_virt_alloc(ai->nr_groups *
+ sizeof(group_sizes[0]), 0);
+ unit_map = memblock_virt_alloc(nr_cpu_ids * sizeof(unit_map[0]), 0);
+ unit_off = memblock_virt_alloc(nr_cpu_ids * sizeof(unit_off[0]), 0);
for (cpu = 0; cpu < nr_cpu_ids; cpu++)
unit_map[cpu] = UINT_MAX;
@@ -1311,7 +1313,8 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
* empty chunks.
*/
pcpu_nr_slots = __pcpu_size_to_slot(pcpu_unit_size) + 2;
- pcpu_slot = alloc_bootmem(pcpu_nr_slots * sizeof(pcpu_slot[0]));
+ pcpu_slot = memblock_virt_alloc(
+ pcpu_nr_slots * sizeof(pcpu_slot[0]), 0);
for (i = 0; i < pcpu_nr_slots; i++)
INIT_LIST_HEAD(&pcpu_slot[i]);
@@ -1322,7 +1325,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
* covers static area + reserved area (mostly used for module
* static percpu allocation).
*/
- schunk = alloc_bootmem(pcpu_chunk_struct_size);
+ schunk = memblock_virt_alloc(pcpu_chunk_struct_size, 0);
INIT_LIST_HEAD(&schunk->list);
schunk->base_addr = base_addr;
schunk->map = smap;
@@ -1346,7 +1349,7 @@ int __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
/* init dynamic chunk if necessary */
if (dyn_size) {
- dchunk = alloc_bootmem(pcpu_chunk_struct_size);
+ dchunk = memblock_virt_alloc(pcpu_chunk_struct_size, 0);
INIT_LIST_HEAD(&dchunk->list);
dchunk->base_addr = base_addr;
dchunk->map = dmap;
@@ -1626,7 +1629,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
size_sum = ai->static_size + ai->reserved_size + ai->dyn_size;
areas_size = PFN_ALIGN(ai->nr_groups * sizeof(void *));
- areas = alloc_bootmem_nopanic(areas_size);
+ areas = memblock_virt_alloc_nopanic(areas_size, 0);
if (!areas) {
rc = -ENOMEM;
goto out_free;
@@ -1712,7 +1715,7 @@ out_free_areas:
out_free:
pcpu_free_alloc_info(ai);
if (areas)
- free_bootmem(__pa(areas), areas_size);
+ memblock_free_early(__pa(areas), areas_size);
return rc;
}
#endif /* BUILD_EMBED_FIRST_CHUNK */
@@ -1760,7 +1763,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size,
/* unaligned allocations can't be freed, round up to page size */
pages_size = PFN_ALIGN(unit_pages * num_possible_cpus() *
sizeof(pages[0]));
- pages = alloc_bootmem(pages_size);
+ pages = memblock_virt_alloc(pages_size, 0);
/* allocate pages */
j = 0;
@@ -1823,7 +1826,7 @@ enomem:
free_fn(page_address(pages[j]), PAGE_SIZE);
rc = -ENOMEM;
out_free_ar:
- free_bootmem(__pa(pages), pages_size);
+ memblock_free_early(__pa(pages), pages_size);
pcpu_free_alloc_info(ai);
return rc;
}
@@ -1848,12 +1851,13 @@ EXPORT_SYMBOL(__per_cpu_offset);
static void * __init pcpu_dfl_fc_alloc(unsigned int cpu, size_t size,
size_t align)
{
- return __alloc_bootmem_nopanic(size, align, __pa(MAX_DMA_ADDRESS));
+ return memblock_virt_alloc_from_nopanic(
+ size, align, __pa(MAX_DMA_ADDRESS));
}
static void __init pcpu_dfl_fc_free(void *ptr, size_t size)
{
- free_bootmem(__pa(ptr), size);
+ memblock_free_early(__pa(ptr), size);
}
void __init setup_per_cpu_areas(void)
@@ -1896,7 +1900,9 @@ void __init setup_per_cpu_areas(void)
void *fc;
ai = pcpu_alloc_alloc_info(1, 1);
- fc = __alloc_bootmem(unit_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
+ fc = memblock_virt_alloc_from_nopanic(unit_size,
+ PAGE_SIZE,
+ __pa(MAX_DMA_ADDRESS));
if (!ai || !fc)
panic("Failed to allocate memory for percpu areas.");
/* kmemleak tracks the percpu allocations separately */
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