diff options
Diffstat (limited to 'drivers/s390')
-rw-r--r-- | drivers/s390/char/zcore.c | 44 |
1 files changed, 14 insertions, 30 deletions
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 3d8e4d63f514..1884653e4472 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; } |