From 5d8b1f9dea17b4bf5e5f088f39eeab32c7e487be Mon Sep 17 00:00:00 2001
From: Nathan Lynch <nathanl@linux.ibm.com>
Date: Thu, 27 Jun 2019 00:30:44 -0500
Subject: [PATCH] powerpc/pseries/mobility: Add pr_debug() for device tree
changes
References: bsc#1181674 ltc#189159
Patch-mainline: v5.9-rc1
Git-commit: 5d8b1f9dea17b4bf5e5f088f39eeab32c7e487be
When investigating issues with partition migration or resource
reassignments it is helpful to have a log of which nodes and
properties in the device tree have changed. Use pr_debug() so it's
easy to enable these at runtime with the dynamic debug facility.
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190627053044.9238-3-nathanl@linux.ibm.com
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
arch/powerpc/platforms/pseries/mobility.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 0ede49a35121..d6f4162478a5 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -67,6 +67,8 @@ static int delete_dt_node(__be32 phandle)
if (!dn)
return -ENOENT;
+ pr_debug("removing node %pOFfp\n", dn);
+
dlpar_detach_node(dn);
of_node_put(dn);
return 0;
@@ -125,6 +127,7 @@ static int update_dt_property(struct device_node *dn, struct property **prop,
}
if (!more) {
+ pr_debug("updating node %pOF property %s\n", dn, name);
of_update_property(dn, new_prop);
*prop = NULL;
}
@@ -243,6 +246,8 @@ static int add_dt_node(__be32 parent_phandle, __be32 drc_index)
if (rc)
dlpar_free_cc_nodes(dn);
+ pr_debug("added node %pOFfp\n", dn);
+
of_node_put(parent_dn);
return rc;
}
--
2.26.2