Release 4.14 arch/s390/mm/mem_detect.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright IBM Corp. 2008, 2009
*
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
*/
#include <linux/kernel.h>
#include <linux/memblock.h>
#include <linux/init.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <asm/ipl.h>
#include <asm/sclp.h>
#include <asm/setup.h>
#define CHUNK_READ_WRITE 0
#define CHUNK_READ_ONLY 1
static inline void memblock_physmem_add(phys_addr_t start, phys_addr_t size)
{
memblock_dbg("memblock_physmem_add: [%#016llx-%#016llx]\n",
start, start + size - 1);
memblock_add_range(&memblock.memory, start, size, 0, 0);
memblock_add_range(&memblock.physmem, start, size, 0, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Philipp Hachtmann | 41 | 70.69% | 1 | 25.00% |
| Heiko Carstens | 17 | 29.31% | 3 | 75.00% |
| Total | 58 | 100.00% | 4 | 100.00% |
void __init detect_memory_memblock(void)
{
unsigned long memsize, rnmax, rzm, addr, size;
int type;
rzm = sclp.rzm;
rnmax = sclp.rnmax;
memsize = rzm * rnmax;
if (!rzm)
rzm = 1UL << 17;
max_physmem_end = memsize;
addr = 0;
/* keep memblock lists close to the kernel */
memblock_set_bottom_up(true);
do {
size = 0;
/* assume lowcore is writable */
type = addr ? tprot(addr) : CHUNK_READ_WRITE;
do {
size += rzm;
if (max_physmem_end && addr + size >= max_physmem_end)
break;
} while (type == tprot(addr + size));
if (type == CHUNK_READ_WRITE || type == CHUNK_READ_ONLY) {
if (max_physmem_end && (addr + size > max_physmem_end))
size = max_physmem_end - addr;
memblock_physmem_add(addr, size);
}
addr += size;
} while (addr < max_physmem_end);
memblock_set_bottom_up(false);
if (!max_physmem_end)
max_physmem_end = memblock_end_of_DRAM();
memblock_dump_all();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Heiko Carstens | 142 | 78.45% | 7 | 70.00% |
| Philipp Hachtmann | 31 | 17.13% | 1 | 10.00% |
| David Hildenbrand | 6 | 3.31% | 1 | 10.00% |
| Michael Holzheu | 2 | 1.10% | 1 | 10.00% |
| Total | 181 | 100.00% | 10 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Heiko Carstens | 171 | 62.64% | 7 | 58.33% |
| Philipp Hachtmann | 92 | 33.70% | 1 | 8.33% |
| David Hildenbrand | 6 | 2.20% | 1 | 8.33% |
| Michael Holzheu | 2 | 0.73% | 1 | 8.33% |
| Hans-Joachim Picht | 1 | 0.37% | 1 | 8.33% |
| Greg Kroah-Hartman | 1 | 0.37% | 1 | 8.33% |
| Total | 273 | 100.00% | 12 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.