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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-05-30 10:03:27 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-05-30 10:03:34 +0200
commit67060d9c1f5d91c917cc51bed464cb5638eaddbc (patch)
tree84a9f66567bcec141f80b0fbc9db995ac9323a50 /arch
parentbebd9a455b2593ba6543b961bc82c43350c2d8d9 (diff)
downloadop-kernel-dev-67060d9c1f5d91c917cc51bed464cb5638eaddbc.zip
op-kernel-dev-67060d9c1f5d91c917cc51bed464cb5638eaddbc.tar.gz
[S390] Fix section mismatch warnings.
This fixes the last remaining section mismatch warnings in s390 architecture code. It reveals also a real bug introduced by... me with git commit 2069e978d5a6e7b45d58027e3de7f879b8c5e488 ("[S390] sparsemem vmemmap: initialize memmap.") Calling the generic vmemmap_alloc_block() function to get initialized memory is a nice idea, however that function is __meminit annotated and therefore the function might be gone if we try to call it later. This can happen if a DCSS segment gets added. So basically revert the patch and clear the memmap explicitly to fix the original bug. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/smp.c2
-rw-r--r--arch/s390/mm/vmem.c18
2 files changed, 14 insertions, 6 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 1f42289..42b1d12 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -1089,7 +1089,7 @@ out:
#ifdef CONFIG_HOTPLUG_CPU
-int smp_rescan_cpus(void)
+int __ref smp_rescan_cpus(void)
{
cpumask_t newcpus;
int cpu;
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index ea28048..f591188 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -27,12 +27,19 @@ struct memory_segment {
static LIST_HEAD(mem_segs);
-static pud_t *vmem_pud_alloc(void)
+static void __ref *vmem_alloc_pages(unsigned int order)
+{
+ if (slab_is_available())
+ return (void *)__get_free_pages(GFP_KERNEL, order);
+ return alloc_bootmem_pages((1 << order) * PAGE_SIZE);
+}
+
+static inline pud_t *vmem_pud_alloc(void)
{
pud_t *pud = NULL;
#ifdef CONFIG_64BIT
- pud = vmemmap_alloc_block(PAGE_SIZE * 4, 0);
+ pud = vmem_alloc_pages(2);
if (!pud)
return NULL;
clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4);
@@ -40,12 +47,12 @@ static pud_t *vmem_pud_alloc(void)
return pud;
}
-static pmd_t *vmem_pmd_alloc(void)
+static inline pmd_t *vmem_pmd_alloc(void)
{
pmd_t *pmd = NULL;
#ifdef CONFIG_64BIT
- pmd = vmemmap_alloc_block(PAGE_SIZE * 4, 0);
+ pmd = vmem_alloc_pages(2);
if (!pmd)
return NULL;
clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4);
@@ -207,13 +214,14 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
if (pte_none(*pt_dir)) {
unsigned long new_page;
- new_page =__pa(vmemmap_alloc_block(PAGE_SIZE, 0));
+ new_page =__pa(vmem_alloc_pages(0));
if (!new_page)
goto out;
pte = pfn_pte(new_page >> PAGE_SHIFT, PAGE_KERNEL);
*pt_dir = pte;
}
}
+ memset(start, 0, nr * sizeof(struct page));
ret = 0;
out:
flush_tlb_kernel_range(start_addr, end_addr);
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