powerpc/pseries: Report DLPAR capabilities

As we add the ability to do DLPAR of additional devices through
the sysfs interface we need to know which devices are supported.
This adds the reporting of supported devices with a comma separated
list reported in the existing /sys/kernel/dlpar.

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

diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 5cb2e4beffc513b910bb8a67c79e937b3d02ed4b..d3a81e746fc48c3d06b30728cc2c4164487f1b85 100644 (file)
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -551,7 +551,13 @@ dlpar_store_out:
        return rc ? rc : count;
 }
 
-static CLASS_ATTR(dlpar, S_IWUSR, NULL, dlpar_store);
+static ssize_t dlpar_show(struct class *class, struct class_attribute *attr,
+                         char *buf)
+{
+       return sprintf(buf, "%s\n", "memory,cpu");
+}
+
+static CLASS_ATTR(dlpar, S_IWUSR | S_IRUSR, dlpar_show, dlpar_store);
 
 static int __init pseries_dlpar_init(void)
 {