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authorHeiko Carstens <heiko.carstens@de.ibm.com>2016-10-18 13:35:32 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-11-29 07:52:55 +0100
commit9e427365af736be864b1cef737b26c516b832144 (patch)
tree2375b5467cd7c61202eae738626479986452074b
parentcb9c638510efc794cc719eee8fe5399dcb3e4046 (diff)
s390: convert remaining bootmem allocations to memblock
Get rid of all remaining alloc_bootmem calls and use memblock_alloc instead everywhere. This way we get rid of the inconsistent mixture of alloc_bootmem and memblock_alloc usages. Two of the alloc_bootmem_low calls within arch/s390/kernel/setup.c are replaced with memblock_alloc calls that don't enforce that the allocated memory is below 2GB. This restriction was never necessary. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r--arch/s390/kernel/setup.c16
-rw-r--r--arch/s390/mm/vmem.c9
2 files changed, 12 insertions, 13 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 17160fb43777..304787512c7a 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -304,7 +304,9 @@ static void __init setup_lowcore(void)
* Setup lowcore for boot cpu
*/
BUILD_BUG_ON(sizeof(struct lowcore) != LC_PAGES * 4096);
- lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
+ lc = (struct lowcore *) memblock_alloc_base(sizeof(struct lowcore),
+ sizeof(struct lowcore),
+ MAX_DMA_ADDRESS);
lc->restart_psw.mask = PSW_KERNEL_BITS;
lc->restart_psw.addr = (unsigned long) restart_int_handler;
lc->external_new_psw.mask = PSW_KERNEL_BITS |
@@ -324,11 +326,9 @@ static void __init setup_lowcore(void)
lc->clock_comparator = -1ULL;
lc->kernel_stack = ((unsigned long) &init_thread_union)
+ THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
- lc->async_stack = (unsigned long)
- __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0)
+ lc->async_stack = memblock_alloc(ASYNC_SIZE, ASYNC_SIZE)
+ ASYNC_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
- lc->panic_stack = (unsigned long)
- __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0)
+ lc->panic_stack = memblock_alloc(PAGE_SIZE, PAGE_SIZE)
+ PAGE_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->current_task = (unsigned long)&init_task;
lc->lpp = LPP_MAGIC;
@@ -350,7 +350,7 @@ static void __init setup_lowcore(void)
lc->last_update_timer = S390_lowcore.last_update_timer;
lc->last_update_clock = S390_lowcore.last_update_clock;
- restart_stack = __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0);
+ restart_stack = (void *) memblock_alloc(ASYNC_SIZE, ASYNC_SIZE);
restart_stack += ASYNC_SIZE;
/*
@@ -413,7 +413,7 @@ static void __init setup_resources(void)
bss_resource.end = (unsigned long) &__bss_stop - 1;
for_each_memblock(memory, reg) {
- res = alloc_bootmem_low(sizeof(*res));
+ res = (void *) memblock_alloc(sizeof(*res), 8);
res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
res->name = "System RAM";
@@ -427,7 +427,7 @@ static void __init setup_resources(void)
std_res->start > res->end)
continue;
if (std_res->end > res->end) {
- sub_res = alloc_bootmem_low(sizeof(*sub_res));
+ sub_res = (void *) memblock_alloc(sizeof(*sub_res), 8);
*sub_res = *std_res;
sub_res->end = res->end;
std_res->start = res->end + 1;
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 1848292766ef..45becc8a44ec 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -34,7 +34,7 @@ static void __ref *vmem_alloc_pages(unsigned int order)
if (slab_is_available())
return (void *)__get_free_pages(GFP_KERNEL, order);
- return alloc_bootmem_align(size, size);
+ return (void *) memblock_alloc(size, size);
}
static inline pud_t *vmem_pud_alloc(void)
@@ -61,17 +61,16 @@ pmd_t *vmem_pmd_alloc(void)
pte_t __ref *vmem_pte_alloc(void)
{
+ unsigned long size = PTRS_PER_PTE * sizeof(pte_t);
pte_t *pte;
if (slab_is_available())
pte = (pte_t *) page_table_alloc(&init_mm);
else
- pte = alloc_bootmem_align(PTRS_PER_PTE * sizeof(pte_t),
- PTRS_PER_PTE * sizeof(pte_t));
+ pte = (pte_t *) memblock_alloc(size, size);
if (!pte)
return NULL;
- clear_table((unsigned long *) pte, _PAGE_INVALID,
- PTRS_PER_PTE * sizeof(pte_t));
+ clear_table((unsigned long *) pte, _PAGE_INVALID, size);
return pte;
}