powerpc/pseries: Enable kernel CPU dlpar from sysfs

Enable new kernel cpu hotplug functionality by allowing cpu dlpar requests
to be initiated from sysfs.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 438fdbd7e40e..2b93ae8d557a 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -356,6 +356,9 @@ static int handle_dlpar_errorlog(struct pseries_hp_errorlog *hp_elog)
         case PSERIES_HP_ELOG_RESOURCE_MEM:
                 rc = dlpar_memory(hp_elog);
                 break;
+        case PSERIES_HP_ELOG_RESOURCE_CPU:
+                rc = dlpar_cpu(hp_elog);
+                break;
         default:
                 pr_warn_ratelimited("Invalid resource (%d) specified\n",
                                     hp_elog->resource);
@@ -385,6 +388,9 @@ static ssize_t dlpar_store(struct class *class, struct class_attribute *attr,
         if (!strncmp(arg, "memory", 6)) {
                 hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_MEM;
                 arg += strlen("memory ");
+        } else if (!strncmp(arg, "cpu", 3)) {
+                hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_CPU;
+                arg += strlen("cpu ");
         } else {
                 pr_err("Invalid resource specified: \"%s\"\n", buf);
                 rc = -EINVAL;