[PULL 07/17] numa: Make all callbacks of ram block notifiers optional

[Dr. David Alan Gilbert (git)]

From: David Hildenbrand 

Let's make add/remove optional. We want to introduce a RAM block
notifier for RAM migration that is only interested in resize events.

Reviewed-by: Peter Xu 
Signed-off-by: David Hildenbrand 
Message-Id: <20210429112708.12291-4-da...@redhat.com>
Signed-off-by: Dr. David Alan Gilbert 
---
 hw/core/numa.c | 13 ++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/hw/core/numa.c b/hw/core/numa.c
index 4c58b2348d..1058d3697b 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -818,8 +818,11 @@ static int ram_block_notify_add_single(RAMBlock *rb, void 
*opaque)
 void ram_block_notifier_add(RAMBlockNotifier *n)
 {
 QLIST_INSERT_HEAD(_list.ramblock_notifiers, n, next);
+
 /* Notify about all existing ram blocks. */
-qemu_ram_foreach_block(ram_block_notify_add_single, n);
+if (n->ram_block_added) {
+qemu_ram_foreach_block(ram_block_notify_add_single, n);
+}
 }
 
 void ram_block_notifier_remove(RAMBlockNotifier *n)
@@ -832,7 +835,9 @@ void ram_block_notify_add(void *host, size_t size, size_t 
max_size)
 RAMBlockNotifier *notifier;
 
 QLIST_FOREACH(notifier, _list.ramblock_notifiers, next) {
-notifier->ram_block_added(notifier, host, size, max_size);
+if (notifier->ram_block_added) {
+notifier->ram_block_added(notifier, host, size, max_size);
+}
 }
 }
 
@@ -841,7 +846,9 @@ void ram_block_notify_remove(void *host, size_t size, 
size_t max_size)
 RAMBlockNotifier *notifier;
 
 QLIST_FOREACH(notifier, _list.ramblock_notifiers, next) {
-notifier->ram_block_removed(notifier, host, size, max_size);
+if (notifier->ram_block_removed) {
+notifier->ram_block_removed(notifier, host, size, max_size);
+}
 }
 }
 
-- 
2.31.1

[PULL 07/17] numa: Make all callbacks of ram block notifiers optional

[Dr. David Alan Gilbert (git)]

From: David Hildenbrand 

Let's make add/remove optional. We want to introduce a RAM block
notifier for RAM migration that is only interested in resize events.

Reviewed-by: Peter Xu 
Signed-off-by: David Hildenbrand 
Message-Id: <20210429112708.12291-4-da...@redhat.com>
Signed-off-by: Dr. David Alan Gilbert 
---
 hw/core/numa.c | 13 ++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/hw/core/numa.c b/hw/core/numa.c
index 4c58b2348d..1058d3697b 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -818,8 +818,11 @@ static int ram_block_notify_add_single(RAMBlock *rb, void 
*opaque)
 void ram_block_notifier_add(RAMBlockNotifier *n)
 {
 QLIST_INSERT_HEAD(_list.ramblock_notifiers, n, next);
+
 /* Notify about all existing ram blocks. */
-qemu_ram_foreach_block(ram_block_notify_add_single, n);
+if (n->ram_block_added) {
+qemu_ram_foreach_block(ram_block_notify_add_single, n);
+}
 }
 
 void ram_block_notifier_remove(RAMBlockNotifier *n)
@@ -832,7 +835,9 @@ void ram_block_notify_add(void *host, size_t size, size_t 
max_size)
 RAMBlockNotifier *notifier;
 
 QLIST_FOREACH(notifier, _list.ramblock_notifiers, next) {
-notifier->ram_block_added(notifier, host, size, max_size);
+if (notifier->ram_block_added) {
+notifier->ram_block_added(notifier, host, size, max_size);
+}
 }
 }
 
@@ -841,7 +846,9 @@ void ram_block_notify_remove(void *host, size_t size, 
size_t max_size)
 RAMBlockNotifier *notifier;
 
 QLIST_FOREACH(notifier, _list.ramblock_notifiers, next) {
-notifier->ram_block_removed(notifier, host, size, max_size);
+if (notifier->ram_block_removed) {
+notifier->ram_block_removed(notifier, host, size, max_size);
+}
 }
 }
 
-- 
2.31.1