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authorPhilipp Hachtmann <phacht@linux.vnet.ibm.com>2014-01-29 18:16:01 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-05-20 08:58:40 +0200
commit50be634507284eea38df78154d22615d21200b42 (patch)
tree427a1302d043bb64b5d4d01c0459f7b4a2282110 /drivers/s390
parent70210ed950b538ee7eb811dccc402db9df1c9be4 (diff)
s390/mm: Convert bootmem to memblock
The original bootmem allocator is getting replaced by memblock. To cover the needs of the s390 kdump implementation the physical memory list is used. With this patch the bootmem allocator and its bitmaps are completely removed from s390. Signed-off-by: Philipp Hachtmann <phacht@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/zcore.c44
1 files changed, 14 insertions, 30 deletions
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 3d8e4d63f51..1884653e447 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -17,6 +17,8 @@
#include <linux/miscdevice.h>
#include <linux/debugfs.h>
#include <linux/module.h>
+#include <linux/memblock.h>
+
#include <asm/asm-offsets.h>
#include <asm/ipl.h>
#include <asm/sclp.h>
@@ -411,33 +413,24 @@ static ssize_t zcore_memmap_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
return simple_read_from_buffer(buf, count, ppos, filp->private_data,
- MEMORY_CHUNKS * CHUNK_INFO_SIZE);
+ memblock.memory.cnt * CHUNK_INFO_SIZE);
}
static int zcore_memmap_open(struct inode *inode, struct file *filp)
{
- int i;
+ struct memblock_region *reg;
char *buf;
- struct mem_chunk *chunk_array;
+ int i = 0;
- chunk_array = kzalloc(MEMORY_CHUNKS * sizeof(struct mem_chunk),
- GFP_KERNEL);
- if (!chunk_array)
- return -ENOMEM;
- detect_memory_layout(chunk_array, 0);
- buf = kzalloc(MEMORY_CHUNKS * CHUNK_INFO_SIZE, GFP_KERNEL);
+ buf = kzalloc(memblock.memory.cnt * CHUNK_INFO_SIZE, GFP_KERNEL);
if (!buf) {
- kfree(chunk_array);
return -ENOMEM;
}
- for (i = 0; i < MEMORY_CHUNKS; i++) {
- sprintf(buf + (i * CHUNK_INFO_SIZE), "%016llx %016llx ",
- (unsigned long long) chunk_array[i].addr,
- (unsigned long long) chunk_array[i].size);
- if (chunk_array[i].size == 0)
- break;
+ for_each_memblock(memory, reg) {
+ sprintf(buf + (i++ * CHUNK_INFO_SIZE), "%016llx %016llx ",
+ (unsigned long long) reg->base,
+ (unsigned long long) reg->size);
}
- kfree(chunk_array);
filp->private_data = buf;
return nonseekable_open(inode, filp);
}
@@ -593,21 +586,12 @@ static int __init check_sdias(void)
static int __init get_mem_info(unsigned long *mem, unsigned long *end)
{
- int i;
- struct mem_chunk *chunk_array;
+ struct memblock_region *reg;
- chunk_array = kzalloc(MEMORY_CHUNKS * sizeof(struct mem_chunk),
- GFP_KERNEL);
- if (!chunk_array)
- return -ENOMEM;
- detect_memory_layout(chunk_array, 0);
- for (i = 0; i < MEMORY_CHUNKS; i++) {
- if (chunk_array[i].size == 0)
- break;
- *mem += chunk_array[i].size;
- *end = max(*end, chunk_array[i].addr + chunk_array[i].size);
+ for_each_memblock(memory, reg) {
+ *mem += reg->size;
+ *end = max_t(unsigned long, *end, reg->base + reg->size);
}
- kfree(chunk_array);
return 0;
}