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| author | Juan Quintela <quintela@redhat.com> | 2012-06-22 15:21:07 +0200 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2012-06-29 13:31:07 +0200 |
| commit | 45f33f01f359d6028ec4b4018a2bf2ff53806e11 (patch) | |
| tree | 1349fd5ada2a86bfa51df5fd8c9c9da5abbe95ea /exec-obsolete.h | |
| parent | 1720aeee72888f80b974c33b6eb39922a0bea992 (diff) | |
| download | qemu-45f33f01f359d6028ec4b4018a2bf2ff53806e11.tar.gz | |
Maintain the number of dirty pages
Calculate the number of dirty pages takes a lot on hosts with lots
of memory. Just maintain how many pages are dirty.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'exec-obsolete.h')
| -rw-r--r-- | exec-obsolete.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/exec-obsolete.h b/exec-obsolete.h index f8ffce607a..c09925610d 100644 --- a/exec-obsolete.h +++ b/exec-obsolete.h @@ -74,6 +74,11 @@ static inline int cpu_physical_memory_get_dirty(ram_addr_t start, static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr, int dirty_flags) { + if ((dirty_flags & MIGRATION_DIRTY_FLAG) && + !cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE, + MIGRATION_DIRTY_FLAG)) { + ram_list.dirty_pages++; + } return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags; } @@ -87,6 +92,11 @@ static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr, { int mask = ~dirty_flags; + if ((dirty_flags & MIGRATION_DIRTY_FLAG) && + cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE, + MIGRATION_DIRTY_FLAG)) { + ram_list.dirty_pages--; + } return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask; } |