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xbzrle: Drop unused cache_resize()

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Unused since commit fd8cec XBZRLE: Fix qemu crash when resize the
xbzrle cache.

Cc: Juan Quintela <quintela@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1501148776-16890-2-git-send-email-armbru@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Markus Armbruster 2017-07-27 11:46:14 +02:00 committed by Dr. David Alan Gilbert
parent c232bf58cb
commit d0834eb539
2 changed files with 0 additions and 67 deletions
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56
migration/page_cache.c
View file

@ -178,59 +178,3 @@ int cache_insert(PageCache *cache, uint64_t addr, const uint8_t *pdata,
return 0;
}
int64_t cache_resize(PageCache *cache, int64_t new_num_pages)
{
PageCache *new_cache;
int64_t i;
CacheItem *old_it, *new_it;
g_assert(cache);
/* cache was not inited */
if (cache->page_cache == NULL) {
return -1;
}
/* same size */
if (pow2floor(new_num_pages) == cache->max_num_items) {
return cache->max_num_items;
}
new_cache = cache_init(new_num_pages, cache->page_size);
if (!(new_cache)) {
DPRINTF("Error creating new cache\n");
return -1;
}
/* move all data from old cache */
for (i = 0; i < cache->max_num_items; i++) {
old_it = &cache->page_cache[i];
if (old_it->it_addr != -1) {
/* check for collision, if there is, keep MRU page */
new_it = cache_get_by_addr(new_cache, old_it->it_addr);
if (new_it->it_data && new_it->it_age >= old_it->it_age) {
/* keep the MRU page */
g_free(old_it->it_data);
} else {
if (!new_it->it_data) {
new_cache->num_items++;
}
g_free(new_it->it_data);
new_it->it_data = old_it->it_data;
new_it->it_age = old_it->it_age;
new_it->it_addr = old_it->it_addr;
}
}
}
g_free(cache->page_cache);
cache->page_cache = new_cache->page_cache;
cache->max_num_items = new_cache->max_num_items;
cache->num_items = new_cache->num_items;
g_free(new_cache);
return cache->max_num_items;
}

11
migration/page_cache.h
View file

@ -72,15 +72,4 @@ uint8_t *get_cached_data(const PageCache *cache, uint64_t addr);
int cache_insert(PageCache *cache, uint64_t addr, const uint8_t *pdata,
uint64_t current_age);
/**
* cache_resize: resize the page cache. In case of size reduction the extra
* pages will be freed
*
* Returns -1 on error new cache size on success
*
* @cache pointer to the PageCache struct
* @num_pages: new page cache size (in pages)
*/
int64_t cache_resize(PageCache *cache, int64_t num_pages);
#endif