diff mbox

[1/3] powerpc/pseries: Refactor dlpar_add_lmb() code

Message ID 56BB6F14.9020708@linux.vnet.ibm.com (mailing list archive)
State Accepted
Headers show

Commit Message

Nathan Fontenot Feb. 10, 2016, 5:10 p.m. UTC 
Re-factor dlpar_lmb_add() routine by moving the validation of the lmb
flags and the acquireing of the DRC to a wrapper around the work to add
the memory to the system. This is done to make handling of errors
during the addition of the memory easier and to facilitate the upcoming
addition of updating the lmb's affinity prior to adding the memory.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
---
 arch/powerpc/platforms/pseries/hotplug-memory.c |   34 ++++++++++++++---------
 1 file changed, 20 insertions(+), 14 deletions(-)

Comments

Michael Ellerman April 11, 2016, 12:35 p.m. UTC | #1 
On Wed, 2016-10-02 at 17:10:44 UTC, Nathan Fontenot wrote:
> Re-factor dlpar_lmb_add() routine by moving the validation of the lmb
> flags and the acquireing of the DRC to a wrapper around the work to add
> the memory to the system. This is done to make handling of errors
> during the addition of the memory easier and to facilitate the upcoming
> addition of updating the lmb's affinity prior to adding the memory.
> 
> Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/4a4bdfea7cb75b5c8b22293279

cheers
diff mbox

Patch

diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index e9ff44c..294acfd 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -384,43 +384,32 @@  static int dlpar_memory_remove_by_index(u32 drc_index, struct property *prop)
 
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 
-static int dlpar_add_lmb(struct of_drconf_cell *lmb)
+static int dlpar_add_lmb_memory(struct of_drconf_cell *lmb)
 {
 	struct memory_block *mem_block;
 	unsigned long block_sz;
 	int nid, rc;
 
-	if (lmb->flags & DRCONF_MEM_ASSIGNED)
-		return -EINVAL;
-
 	block_sz = memory_block_size_bytes();
 
-	rc = dlpar_acquire_drc(lmb->drc_index);
-	if (rc)
-		return rc;
-
 	/* Find the node id for this address */
 	nid = memory_add_physaddr_to_nid(lmb->base_addr);
 
 	/* Add the memory */
 	rc = add_memory(nid, lmb->base_addr, block_sz);
-	if (rc) {
-		dlpar_release_drc(lmb->drc_index);
+	if (rc)
 		return rc;
-	}
 
 	/* Register this block of memory */
 	rc = memblock_add(lmb->base_addr, block_sz);
 	if (rc) {
 		remove_memory(nid, lmb->base_addr, block_sz);
-		dlpar_release_drc(lmb->drc_index);
 		return rc;
 	}
 
 	mem_block = lmb_to_memblock(lmb);
 	if (!mem_block) {
 		remove_memory(nid, lmb->base_addr, block_sz);
-		dlpar_release_drc(lmb->drc_index);
 		return -EINVAL;
 	}
 
@@ -428,7 +417,6 @@  static int dlpar_add_lmb(struct of_drconf_cell *lmb)
 	put_device(&mem_block->dev);
 	if (rc) {
 		remove_memory(nid, lmb->base_addr, block_sz);
-		dlpar_release_drc(lmb->drc_index);
 		return rc;
 	}
 
@@ -436,6 +424,24 @@  static int dlpar_add_lmb(struct of_drconf_cell *lmb)
 	return 0;
 }
 
+static int dlpar_add_lmb(struct of_drconf_cell *lmb)
+{
+	int rc;
+
+	if (lmb->flags & DRCONF_MEM_ASSIGNED)
+		return -EINVAL;
+
+	rc = dlpar_acquire_drc(lmb->drc_index);
+	if (rc)
+		return rc;
+
+	rc = dlpar_add_lmb_memory(lmb);
+	if (rc)
+		dlpar_release_drc(lmb->drc_index);
+
+	return rc;
+}
+
 static int dlpar_memory_add_by_count(u32 lmbs_to_add, struct property *prop)
 {
 	struct of_drconf_cell *lmbs;