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migration/ram: Fix some helper functions' parameter to use PageSearchStatus 

Some helper functions use parameters 'RAMBlock *block' and 'ram_addr_t *offset',
We can use 'PageSearchStatus *pss' directly instead, with this change, we
can reduce the number of parameters for these helper function, also
it is easily to add new parameters for these helper functions.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1452829066-9764-5-git-send-email-zhang.zhanghailiang@huawei.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
zhanghailiang 2016-01-15 11:37:44 +08:00 committed by Amit Shah
parent fb3520a84e
commit a08f689034
1 changed files with 19 additions and 14 deletions
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33
migration/ram.c
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@ -729,7 +729,7 @@ static int save_zero_page(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
* @last_stage: if we are at the completion stage
* @bytes_transferred: increase it with the number of transferred bytes
*/
static int ram_save_page(QEMUFile *f, RAMBlock* block, ram_addr_t offset,
static int ram_save_page(QEMUFile *f, PageSearchStatus *pss,
bool last_stage, uint64_t *bytes_transferred)
{
int pages = -1;
@ -738,6 +738,8 @@ static int ram_save_page(QEMUFile *f, RAMBlock* block, ram_addr_t offset,
uint8_t *p;
int ret;
bool send_async = true;
RAMBlock *block = pss->block;
ram_addr_t offset = pss->offset;
p = block->host + offset;
@ -912,14 +914,16 @@ static int compress_page_with_multi_thread(QEMUFile *f, RAMBlock *block,
* @last_stage: if we are at the completion stage
* @bytes_transferred: increase it with the number of transferred bytes
*/
static int ram_save_compressed_page(QEMUFile *f, RAMBlock *block,
ram_addr_t offset, bool last_stage,
static int ram_save_compressed_page(QEMUFile *f, PageSearchStatus *pss,
bool last_stage,
uint64_t *bytes_transferred)
{
int pages = -1;
uint64_t bytes_xmit;
uint8_t *p;
int ret;
RAMBlock *block = pss->block;
ram_addr_t offset = pss->offset;
p = block->host + offset;
@ -1229,7 +1233,7 @@ err:
* Returns: Number of pages written.
*/
static int ram_save_target_page(MigrationState *ms, QEMUFile *f,
RAMBlock *block, ram_addr_t offset,
PageSearchStatus *pss,
bool last_stage,
uint64_t *bytes_transferred,
ram_addr_t dirty_ram_abs)
@ -1240,11 +1244,11 @@ static int ram_save_target_page(MigrationState *ms, QEMUFile *f,
if (migration_bitmap_clear_dirty(dirty_ram_abs)) {
unsigned long *unsentmap;
if (compression_switch && migrate_use_compression()) {
res = ram_save_compressed_page(f, block, offset,
res = ram_save_compressed_page(f, pss,
last_stage,
bytes_transferred);
} else {
res = ram_save_page(f, block, offset, last_stage,
res = ram_save_page(f, pss, last_stage,
bytes_transferred);
}
@ -1260,7 +1264,7 @@ static int ram_save_target_page(MigrationState *ms, QEMUFile *f,
* to the stream.
*/
if (res > 0) {
last_sent_block = block;
last_sent_block = pss->block;
}
}
@ -1284,26 +1288,27 @@ static int ram_save_target_page(MigrationState *ms, QEMUFile *f,
* @bytes_transferred: increase it with the number of transferred bytes
* @dirty_ram_abs: Address of the start of the dirty page in ram_addr_t space
*/
static int ram_save_host_page(MigrationState *ms, QEMUFile *f, RAMBlock *block,
ram_addr_t *offset, bool last_stage,
static int ram_save_host_page(MigrationState *ms, QEMUFile *f,
PageSearchStatus *pss,
bool last_stage,
uint64_t *bytes_transferred,
ram_addr_t dirty_ram_abs)
{
int tmppages, pages = 0;
do {
tmppages = ram_save_target_page(ms, f, block, *offset, last_stage,
tmppages = ram_save_target_page(ms, f, pss, last_stage,
bytes_transferred, dirty_ram_abs);
if (tmppages < 0) {
return tmppages;
}
pages += tmppages;
*offset += TARGET_PAGE_SIZE;
pss->offset += TARGET_PAGE_SIZE;
dirty_ram_abs += TARGET_PAGE_SIZE;
} while (*offset & (qemu_host_page_size - 1));
} while (pss->offset & (qemu_host_page_size - 1));
/* The offset we leave with is the last one we looked at */
*offset -= TARGET_PAGE_SIZE;
pss->offset -= TARGET_PAGE_SIZE;
return pages;
}
@ -1351,7 +1356,7 @@ static int ram_find_and_save_block(QEMUFile *f, bool last_stage,
}
if (found) {
pages = ram_save_host_page(ms, f, pss.block, &pss.offset,
pages = ram_save_host_page(ms, f, &pss,
last_stage, bytes_transferred,
dirty_ram_abs);
}