memory_hotplug.c (952eea9b01e4bbb7011329f1b7240844e61e5128) memory_hotplug.c (32befe9e27859b87e70e0aba9b60bfb8000d9a66)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/mm/memory_hotplug.c
4 *
5 * Copyright (C)
6 */
7
8#include <linux/stddef.h>

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1337 * NOTE: The caller must call lock_device_hotplug() to serialize hotplug
1338 * and online/offline operations (triggered e.g. by sysfs).
1339 *
1340 * we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG
1341 */
1342int __ref add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags)
1343{
1344 struct mhp_params params = { .pgprot = pgprot_mhp(PAGE_KERNEL) };
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/mm/memory_hotplug.c
4 *
5 * Copyright (C)
6 */
7
8#include <linux/stddef.h>

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1337 * NOTE: The caller must call lock_device_hotplug() to serialize hotplug
1338 * and online/offline operations (triggered e.g. by sysfs).
1339 *
1340 * we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG
1341 */
1342int __ref add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags)
1343{
1344 struct mhp_params params = { .pgprot = pgprot_mhp(PAGE_KERNEL) };
1345 enum memblock_flags memblock_flags = MEMBLOCK_NONE;
1345 struct vmem_altmap mhp_altmap = {};
1346 struct memory_group *group = NULL;
1347 u64 start, size;
1348 bool new_node = false;
1349 int ret;
1350
1351 start = res->start;
1352 size = resource_size(res);

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1365 if (!node_possible(nid)) {
1366 WARN(1, "node %d was absent from the node_possible_map\n", nid);
1367 return -EINVAL;
1368 }
1369
1370 mem_hotplug_begin();
1371
1372 if (IS_ENABLED(CONFIG_ARCH_KEEP_MEMBLOCK)) {
1346 struct vmem_altmap mhp_altmap = {};
1347 struct memory_group *group = NULL;
1348 u64 start, size;
1349 bool new_node = false;
1350 int ret;
1351
1352 start = res->start;
1353 size = resource_size(res);

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1366 if (!node_possible(nid)) {
1367 WARN(1, "node %d was absent from the node_possible_map\n", nid);
1368 return -EINVAL;
1369 }
1370
1371 mem_hotplug_begin();
1372
1373 if (IS_ENABLED(CONFIG_ARCH_KEEP_MEMBLOCK)) {
1373 ret = memblock_add_node(start, size, nid, MEMBLOCK_NONE);
1374 if (res->flags & IORESOURCE_SYSRAM_DRIVER_MANAGED)
1375 memblock_flags = MEMBLOCK_DRIVER_MANAGED;
1376 ret = memblock_add_node(start, size, nid, memblock_flags);
1374 if (ret)
1375 goto error_mem_hotplug_end;
1376 }
1377
1378 ret = __try_online_node(nid, false);
1379 if (ret < 0)
1380 goto error;
1381 new_node = ret;

--- 954 unchanged lines hidden --- 		1377 if (ret)
1378 goto error_mem_hotplug_end;
1379 }
1380
1381 ret = __try_online_node(nid, false);
1382 if (ret < 0)
1383 goto error;
1384 new_node = ret;

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