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Subject[PATCH 35/49] bootmem, x86: Add weak version of reserve_bootmem_generic
Date
It will be used memblock_x86_to_bootmem converting

It is an wrapper for reserve_bootmem, and x86 64bit is using special one.

Also clean up that version for x86_64. We don't need to take care of numa
path for that, bootmem can handle it how

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/mm/init_32.c | 6 ------
arch/x86/mm/init_64.c | 20 ++------------------
mm/bootmem.c | 6 ++++++
3 files changed, 8 insertions(+), 24 deletions(-)
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index bca7909..90e0545 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -1069,9 +1069,3 @@ void mark_rodata_ro(void)
#endif
}
#endif
-
-int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
- int flags)
-{
- return reserve_bootmem(phys, len, flags);
-}
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index ee41bba..634fa08 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -799,13 +799,10 @@ void mark_rodata_ro(void)

#endif

+#ifndef CONFIG_NO_BOOTMEM
int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
int flags)
{
-#ifdef CONFIG_NUMA
- int nid, next_nid;
- int ret;
-#endif
unsigned long pfn = phys >> PAGE_SHIFT;

if (pfn >= max_pfn) {
@@ -821,21 +818,7 @@ int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
return -EFAULT;
}

- /* Should check here against the e820 map to avoid double free */
-#ifdef CONFIG_NUMA
- nid = phys_to_nid(phys);
- next_nid = phys_to_nid(phys + len - 1);
- if (nid == next_nid)
- ret = reserve_bootmem_node(NODE_DATA(nid), phys, len, flags);
- else
- ret = reserve_bootmem(phys, len, flags);
-
- if (ret != 0)
- return ret;
-
-#else
reserve_bootmem(phys, len, flags);
-#endif

if (phys+len <= MAX_DMA_PFN*PAGE_SIZE) {
dma_reserve += len / PAGE_SIZE;
@@ -844,6 +827,7 @@ int __init reserve_bootmem_generic(unsigned long phys, unsigned long len,

return 0;
}
+#endif

int kern_addr_valid(unsigned long addr)
{
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 142c84a..bde170d 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -526,6 +526,12 @@ int __init reserve_bootmem(unsigned long addr, unsigned long size,
}

#ifndef CONFIG_NO_BOOTMEM
+int __weak __init reserve_bootmem_generic(unsigned long phys, unsigned long len,
+ int flags)
+{
+ return reserve_bootmem(phys, len, flags);
+}
+
static unsigned long __init align_idx(struct bootmem_data *bdata,
unsigned long idx, unsigned long step)
{
--
1.6.4.2


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