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powerpc/pseries: Auto-online hotplugged memory

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A recent update (commit id 31bc3858ea) allows for automatically
onlining memory that is added. This patch sets the config option
CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y for pseries and updates the
pseries memory hotplug code so that DLPAR added memory can be
automatically onlined instead of explicitly onlining the memory.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nathan Fontenot 2016-06-29 12:19:14 -05:00 committed by Michael Ellerman
parent c05a5a4096
commit ec99907244
2 changed files with 1 additions and 14 deletions
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1
arch/powerpc/configs/pseries_defconfig
View file

@ -53,6 +53,7 @@ CONFIG_KEXEC=y
CONFIG_IRQ_ALL_CPUS=y
CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_PPC_64K_PAGES=y

14
arch/powerpc/platforms/pseries/hotplug-memory.c
View file

@ -590,7 +590,6 @@ static int dlpar_memory_remove_by_index(u32 drc_index, struct property *prop)
static int dlpar_add_lmb_memory(struct of_drconf_cell *lmb)
{
struct memory_block *mem_block;
unsigned long block_sz;
int nid, rc;
@ -611,19 +610,6 @@ static int dlpar_add_lmb_memory(struct of_drconf_cell *lmb)
return rc;
}
mem_block = lmb_to_memblock(lmb);
if (!mem_block) {
remove_memory(nid, lmb->base_addr, block_sz);
return -EINVAL;
}
rc = device_online(&mem_block->dev);
put_device(&mem_block->dev);
if (rc) {
remove_memory(nid, lmb->base_addr, block_sz);
return rc;
}
lmb->flags |= DRCONF_MEM_ASSIGNED;
return 0;
}