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authorMichael Ellerman <mpe@ellerman.id.au>2014-11-18 16:47:35 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2014-11-19 21:41:51 +1100
commite39f223fc93580c86ccf6b3422033e349f57f0dd (patch)
tree0aa179423f4c553bbf1fa361d28fe4c9c75927e7 /arch/powerpc/mm
parenta49ab6eeebe5624d51466969a7bac611231eede8 (diff)
powerpc: Remove more traces of bootmem
Although we are now selecting NO_BOOTMEM, we still have some traces of bootmem lying around. That is because even with NO_BOOTMEM there is still a shim that converts bootmem calls into memblock calls, but ultimately we want to remove all traces of bootmem. Most of the patch is conversions from alloc_bootmem() to memblock_virt_alloc(). In general a call such as: p = (struct foo *)alloc_bootmem(x); Becomes: p = memblock_virt_alloc(x, 0); We don't need the cast because memblock_virt_alloc() returns a void *. The alignment value of zero tells memblock to use the default alignment, which is SMP_CACHE_BYTES, the same value alloc_bootmem() uses. We remove a number of NULL checks on the result of memblock_virt_alloc(). That is because memblock_virt_alloc() will panic if it can't allocate, in exactly the same way as alloc_bootmem(), so the NULL checks are and always have been redundant. The memory returned by memblock_virt_alloc() is already zeroed, so we remove several memsets of the result of memblock_virt_alloc(). Finally we convert a few uses of __alloc_bootmem(x, y, MAX_DMA_ADDRESS) to just plain memblock_virt_alloc(). We don't use memblock_alloc_base() because MAX_DMA_ADDRESS is ~0ul on powerpc, so limiting the allocation to that is pointless, 16XB ought to be enough for anyone. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/hugetlbpage.c2
-rw-r--r--arch/powerpc/mm/mmu_context_nohash.c8
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index af56de82375d..8c9b8115867c 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -315,7 +315,7 @@ int alloc_bootmem_huge_page(struct hstate *hstate)
* If gpages can be in highmem we can't use the trick of storing the
* data structure in the page; allocate space for this
*/
- m = alloc_bootmem(sizeof(struct huge_bootmem_page));
+ m = memblock_virt_alloc(sizeof(struct huge_bootmem_page), 0);
m->phys = gpage_freearray[idx].gpage_list[--nr_gpages];
#else
m = phys_to_virt(gpage_freearray[idx].gpage_list[--nr_gpages]);
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index 928ebe79668b..9cba6cba2e50 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -421,12 +421,12 @@ void __init mmu_context_init(void)
/*
* Allocate the maps used by context management
*/
- context_map = alloc_bootmem(CTX_MAP_SIZE);
- context_mm = alloc_bootmem(sizeof(void *) * (last_context + 1));
+ context_map = memblock_virt_alloc(CTX_MAP_SIZE, 0);
+ context_mm = memblock_virt_alloc(sizeof(void *) * (last_context + 1), 0);
#ifndef CONFIG_SMP
- stale_map[0] = alloc_bootmem(CTX_MAP_SIZE);
+ stale_map[0] = memblock_virt_alloc(CTX_MAP_SIZE, 0);
#else
- stale_map[boot_cpuid] = alloc_bootmem(CTX_MAP_SIZE);
+ stale_map[boot_cpuid] = memblock_virt_alloc(CTX_MAP_SIZE, 0);
register_cpu_notifier(&mmu_context_cpu_nb);
#endif