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[Qemu-devel] [PATCH 22/31] ram: move migration_bitmap_mutex into RAMStat
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [PATCH 22/31] ram: move migration_bitmap_mutex into RAMState |
Date: |
Wed, 15 Mar 2017 14:50:12 +0100 |
Signed-off-by: Juan Quintela <address@hidden>
---
migration/ram.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/migration/ram.c b/migration/ram.c
index 7f56b5f..c14293c 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -178,6 +178,8 @@ struct RAMState {
uint64_t xbzrle_overflows;
/* number of dirty bits in the bitmap */
uint64_t migration_dirty_pages;
+ /* protects modification of the bitmap */
+ QemuMutex bitmap_mutex;
};
typedef struct RAMState RAMState;
@@ -223,8 +225,6 @@ static ram_addr_t ram_save_remaining(void)
return ram_state.migration_dirty_pages;
}
-static QemuMutex migration_bitmap_mutex;
-
/* used by the search for pages to send */
struct PageSearchStatus {
/* Current block being searched */
@@ -626,13 +626,13 @@ static void migration_bitmap_sync(RAMState *rs)
trace_migration_bitmap_sync_start();
memory_global_dirty_log_sync();
- qemu_mutex_lock(&migration_bitmap_mutex);
+ qemu_mutex_lock(&rs->bitmap_mutex);
rcu_read_lock();
QLIST_FOREACH_RCU(block, &ram_list.blocks, next) {
migration_bitmap_sync_range(rs, block->offset, block->used_length);
}
rcu_read_unlock();
- qemu_mutex_unlock(&migration_bitmap_mutex);
+ qemu_mutex_unlock(&rs->bitmap_mutex);
trace_migration_bitmap_sync_end(rs->migration_dirty_pages
- num_dirty_pages_init);
@@ -1498,7 +1498,7 @@ void migration_bitmap_extend(ram_addr_t old, ram_addr_t
new)
* it is safe to migration if migration_bitmap is cleared bit
* at the same time.
*/
- qemu_mutex_lock(&migration_bitmap_mutex);
+ qemu_mutex_lock(&ram_state.bitmap_mutex);
bitmap_copy(bitmap->bmap, old_bitmap->bmap, old);
bitmap_set(bitmap->bmap, old, new - old);
@@ -1509,7 +1509,7 @@ void migration_bitmap_extend(ram_addr_t old, ram_addr_t
new)
bitmap->unsentmap = NULL;
atomic_rcu_set(&migration_bitmap_rcu, bitmap);
- qemu_mutex_unlock(&migration_bitmap_mutex);
+ qemu_mutex_unlock(&ram_state.bitmap_mutex);
ram_state.migration_dirty_pages += new - old;
call_rcu(old_bitmap, migration_bitmap_free, rcu);
}
@@ -1911,7 +1911,7 @@ static int ram_state_init(RAMState *rs)
int64_t ram_bitmap_pages; /* Size of bitmap in pages, including gaps */
memset(rs, 0, sizeof(*rs));
- qemu_mutex_init(&migration_bitmap_mutex);
+ qemu_mutex_init(&rs->bitmap_mutex);
if (migrate_use_xbzrle()) {
XBZRLE_cache_lock();
--
2.9.3
- [Qemu-devel] [PATCH 11/31] ram: Remove unused pages_skiped variable, (continued)
- [Qemu-devel] [PATCH 11/31] ram: Remove unused pages_skiped variable, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 15/31] ram: Move xbzrle_bytes into RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 19/31] ram: move xbzrle_overflows into RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 21/31] ram: Everything was init to zero, so use memset, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 18/31] ram: move xbzrle_cache_miss_rate into RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 17/31] ram: Move xbzrle_cache_miss into RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 16/31] ram: Move xbzrle_pages into RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 22/31] ram: move migration_bitmap_mutex into RAMState,
Juan Quintela <=
- [Qemu-devel] [PATCH 20/31] ram: move migration_dirty_pages to RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 23/31] ram: Move migration_bitmap_rcu into RAMState, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 25/31] ram: Use the RAMState bytes_transferred parameter, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 26/31] ram: Remove ram_save_remaining, Juan Quintela, 2017/03/15
- [Qemu-devel] [PATCH 27/31] ram: Move last_req_rb to RAMState, Juan Quintela, 2017/03/15