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ram.c: Remove last ram.c dependency from the core compress code 

Make compression interfaces take send_queued_data() as an argument.
Remove save_page_use_compression() from flush_compressed_data().

This removes the last ram.c dependency from the core compress code.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Lukas Straub 2023-04-20 11:48:13 +02:00 committed by Juan Quintela
parent 680628d200
commit ef4f5f5d5a
1 changed files with 17 additions and 10 deletions
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27
migration/ram.c
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@ -1545,13 +1545,10 @@ static int send_queued_data(CompressParam *param)
return len;
}
static void flush_compressed_data(RAMState *rs)
static void flush_compressed_data(int (send_queued_data(CompressParam *)))
{
int idx, thread_count;
if (!save_page_use_compression(rs)) {
return;
}
thread_count = migrate_compress_threads();
qemu_mutex_lock(&comp_done_lock);
@ -1573,6 +1570,15 @@ static void flush_compressed_data(RAMState *rs)
}
}
static void ram_flush_compressed_data(RAMState *rs)
{
if (!save_page_use_compression(rs)) {
return;
}
flush_compressed_data(send_queued_data);
}
static inline void set_compress_params(CompressParam *param, RAMBlock *block,
ram_addr_t offset)
{
@ -1581,7 +1587,8 @@ static inline void set_compress_params(CompressParam *param, RAMBlock *block,
param->trigger = true;
}
static int compress_page_with_multi_thread(RAMBlock *block, ram_addr_t offset)
static int compress_page_with_multi_thread(RAMBlock *block, ram_addr_t offset,
int (send_queued_data(CompressParam *)))
{
int idx, thread_count, pages = -1;
bool wait = migrate_compress_wait_thread();
@ -1672,7 +1679,7 @@ static int find_dirty_block(RAMState *rs, PageSearchStatus *pss)
* Also If xbzrle is on, stop using the data compression at this
* point. In theory, xbzrle can do better than compression.
*/
flush_compressed_data(rs);
ram_flush_compressed_data(rs);
/* Hit the end of the list */
pss->block = QLIST_FIRST_RCU(&ram_list.blocks);
@ -2362,11 +2369,11 @@ static bool save_compress_page(RAMState *rs, PageSearchStatus *pss,
* much CPU resource.
*/
if (block != pss->last_sent_block) {
flush_compressed_data(rs);
ram_flush_compressed_data(rs);
return false;
}
if (compress_page_with_multi_thread(block, offset) > 0) {
if (compress_page_with_multi_thread(block, offset, send_queued_data) > 0) {
return true;
}
@ -3412,7 +3419,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
* page is sent in one chunk.
*/
if (migrate_postcopy_ram()) {
flush_compressed_data(rs);
ram_flush_compressed_data(rs);
}
/*
@ -3507,7 +3514,7 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
}
qemu_mutex_unlock(&rs->bitmap_mutex);
flush_compressed_data(rs);
ram_flush_compressed_data(rs);
ram_control_after_iterate(f, RAM_CONTROL_FINISH);
}