On 11/18/2010 07:14 AM, Takuya Yoshikawa wrote:
This patch introduces the counter to hold the number of dirty bits in each
memslot. We will use this to optimize dirty logging later.
@@ -3217,11 +3216,8 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
n = kvm_dirty_bitmap_bytes(memslot);
- for (i = 0; !is_dirty&& i< n/sizeof(long); i++)
- is_dirty = memslot->dirty_bitmap[i];
-
This can already be an improvement.
@@ -152,6 +152,7 @@ struct kvm_memory_slot {
unsigned long *rmap;
unsigned long *dirty_bitmap;
unsigned long *dirty_bitmap_head;
+ unsigned long num_dirty_bits;
The bits themselves are not dirty; only the pages are dirty.
(+ we usually use 'nr' for 'number')
--
error compiling committee.c: too many arguments to function
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