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[PATCH v5 03/10] numa: Make all callbacks of ram block notifiers optiona
From: |
David Hildenbrand |
Subject: |
[PATCH v5 03/10] numa: Make all callbacks of ram block notifiers optional |
Date: |
Thu, 29 Apr 2021 13:27:01 +0200 |
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 <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
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 921bf86ab4..64b9334050 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -819,8 +819,11 @@ static int ram_block_notify_add_single(RAMBlock *rb, void
*opaque)
void ram_block_notifier_add(RAMBlockNotifier *n)
{
QLIST_INSERT_HEAD(&ram_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)
@@ -833,7 +836,9 @@ void ram_block_notify_add(void *host, size_t size, size_t
max_size)
RAMBlockNotifier *notifier;
QLIST_FOREACH(notifier, &ram_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);
+ }
}
}
@@ -842,7 +847,9 @@ void ram_block_notify_remove(void *host, size_t size,
size_t max_size)
RAMBlockNotifier *notifier;
QLIST_FOREACH(notifier, &ram_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);
+ }
}
}
--
2.30.2
- [PATCH v5 00/10] numa/exec/migration: Fix resizing RAM blocks while migrating, David Hildenbrand, 2021/04/29
- [PATCH v5 01/10] util: vfio-helpers: Factor out and fix processing of existing ram blocks, David Hildenbrand, 2021/04/29
- [PATCH v5 02/10] numa: Teach ram block notifiers about resizeable ram blocks, David Hildenbrand, 2021/04/29
- [PATCH v5 03/10] numa: Make all callbacks of ram block notifiers optional,
David Hildenbrand <=
- [PATCH v5 04/10] migration/ram: Handle RAM block resizes during precopy, David Hildenbrand, 2021/04/29
- [PATCH v5 05/10] exec: Relax range check in ram_block_discard_range(), David Hildenbrand, 2021/04/29
- [PATCH v5 06/10] migration/ram: Discard RAM when growing RAM blocks after ram_postcopy_incoming_init(), David Hildenbrand, 2021/04/29
- [PATCH v5 07/10] migration/ram: Simplify host page handling in ram_load_postcopy(), David Hildenbrand, 2021/04/29
- [PATCH v5 08/10] migration/ram: Handle RAM block resizes during postcopy, David Hildenbrand, 2021/04/29
- [PATCH v5 09/10] migration/multifd: Print used_length of memory block, David Hildenbrand, 2021/04/29
- [PATCH v5 10/10] migration/ram: Use offset_in_ramblock() in range checks, David Hildenbrand, 2021/04/29