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migration: Rename duplicate to zero_pages

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Rest of counters that refer to pages has a _pages suffix.
And historically, this showed the number of pages composed of the same
character, here comes the name "duplicated".  But since years ago, it
refers to the number of zero_pages.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Juan Quintela 2023-04-19 18:16:05 +02:00
parent 3c764f9b2b
commit 1a386e8de5
3 changed files with 7 additions and 7 deletions
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2
migration/migration.c
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@ -1142,7 +1142,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
info->ram = g_malloc0(sizeof(*info->ram));
info->ram->transferred = stat64_get(&ram_counters.transferred);
info->ram->total = ram_bytes_total();
info->ram->duplicate = stat64_get(&ram_counters.duplicate);
info->ram->duplicate = stat64_get(&ram_counters.zero_pages);
/* legacy value. It is not used anymore */
info->ram->skipped = 0;
info->ram->normal = stat64_get(&ram_counters.normal);

10
migration/ram.c
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@ -1119,7 +1119,7 @@ uint64_t ram_pagesize_summary(void)
uint64_t ram_get_total_transferred_pages(void)
{
return stat64_get(&ram_counters.normal) +
stat64_get(&ram_counters.duplicate) +
stat64_get(&ram_counters.zero_pages) +
compression_counters.pages + xbzrle_counters.pages;
}
@ -1320,7 +1320,7 @@ static int save_zero_page(PageSearchStatus *pss, QEMUFile *f, RAMBlock *block,
int len = save_zero_page_to_file(pss, f, block, offset);
if (len) {
stat64_add(&ram_counters.duplicate, 1);
stat64_add(&ram_counters.zero_pages, 1);
ram_transferred_add(len);
return 1;
}
@ -1359,7 +1359,7 @@ static bool control_save_page(PageSearchStatus *pss, RAMBlock *block,
if (bytes_xmit > 0) {
stat64_add(&ram_counters.normal, 1);
} else if (bytes_xmit == 0) {
stat64_add(&ram_counters.duplicate, 1);
stat64_add(&ram_counters.zero_pages, 1);
}
return true;
@ -1486,7 +1486,7 @@ update_compress_thread_counts(const CompressParam *param, int bytes_xmit)
ram_transferred_add(bytes_xmit);
if (param->zero_page) {
stat64_add(&ram_counters.duplicate, 1);
stat64_add(&ram_counters.zero_pages, 1);
return;
}
@ -2621,7 +2621,7 @@ void acct_update_position(QEMUFile *f, size_t size, bool zero)
uint64_t pages = size / TARGET_PAGE_SIZE;
if (zero) {
stat64_add(&ram_counters.duplicate, pages);
stat64_add(&ram_counters.zero_pages, pages);
} else {
stat64_add(&ram_counters.normal, pages);
ram_transferred_add(size);

2
migration/ram.h
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@ -45,7 +45,7 @@ typedef struct {
Stat64 dirty_sync_count;
Stat64 dirty_sync_missed_zero_copy;
Stat64 downtime_bytes;
Stat64 duplicate;
Stat64 zero_pages;
Stat64 multifd_bytes;
Stat64 normal;
Stat64 postcopy_bytes;