qemu-kvm/SOURCES/kvm-migration-Move-migrate_use_compression-to-options.c.patch

From ae183bfc9d7b001d3c4929556b095a76203bc08d Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Wed, 1 Mar 2023 22:03:48 +0100
Subject: [PATCH 25/56] migration: Move migrate_use_compression() to options.c
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RH-Author: Peter Xu <peterx@redhat.com>
RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
RH-Bugzilla: 2057267
RH-Acked-by: Leonardo Brás <leobras@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: quintela1 <quintela@redhat.com>
RH-Commit: [24/50] 126b865f51bd4a1ae3a46411fdcd59033bfc5376 (peterx/qemu-kvm)

Once that we are there, we rename the function to migrate_compress()
to be consistent with all other capabilities.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
(cherry picked from commit a7a94d14358dd7b445e20c2f26218ff987747642)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 11 +----------
 migration/migration.h |  1 -
 migration/options.c   |  9 +++++++++
 migration/options.h   |  1 +
 migration/ram.c       | 16 ++++++++--------
 5 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index 59ee0ef82b..c6e32555a8 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1133,7 +1133,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
         info->xbzrle_cache->overflow = xbzrle_counters.overflow;
     }
 
-    if (migrate_use_compression()) {
+    if (migrate_compress()) {
         info->compression = g_malloc0(sizeof(*info->compression));
         info->compression->pages = compression_counters.pages;
         info->compression->busy = compression_counters.busy;
@@ -2522,15 +2522,6 @@ bool migrate_postcopy(void)
     return migrate_postcopy_ram() || migrate_dirty_bitmaps();
 }
 
-bool migrate_use_compression(void)
-{
-    MigrationState *s;
-
-    s = migrate_get_current();
-
-    return s->capabilities[MIGRATION_CAPABILITY_COMPRESS];
-}
-
 int migrate_compress_level(void)
 {
     MigrationState *s;
diff --git a/migration/migration.h b/migration/migration.h
index 42f0c68b6f..77aa91c840 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -471,7 +471,6 @@ bool migrate_use_return_path(void);
 
 uint64_t ram_get_total_transferred_pages(void);
 
-bool migrate_use_compression(void);
 int migrate_compress_level(void);
 int migrate_compress_threads(void);
 int migrate_compress_wait_thread(void);
diff --git a/migration/options.c b/migration/options.c
index bd33c5da0a..fa7a13d3dc 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -39,6 +39,15 @@ bool migrate_colo(void)
     return s->capabilities[MIGRATION_CAPABILITY_X_COLO];
 }
 
+bool migrate_compress(void)
+{
+    MigrationState *s;
+
+    s = migrate_get_current();
+
+    return s->capabilities[MIGRATION_CAPABILITY_COMPRESS];
+}
+
 bool migrate_dirty_bitmaps(void)
 {
     MigrationState *s;
diff --git a/migration/options.h b/migration/options.h
index 2a0ee61ff8..da2193fd94 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -19,6 +19,7 @@
 bool migrate_auto_converge(void);
 bool migrate_background_snapshot(void);
 bool migrate_colo(void);
+bool migrate_compress(void);
 bool migrate_dirty_bitmaps(void);
 bool migrate_ignore_shared(void);
 bool migrate_late_block_activate(void);
diff --git a/migration/ram.c b/migration/ram.c
index 912ccd89fa..d050d0c5fd 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -586,7 +586,7 @@ static void compress_threads_save_cleanup(void)
 {
     int i, thread_count;
 
-    if (!migrate_use_compression() || !comp_param) {
+    if (!migrate_compress() || !comp_param) {
         return;
     }
 
@@ -625,7 +625,7 @@ static int compress_threads_save_setup(void)
 {
     int i, thread_count;
 
-    if (!migrate_use_compression()) {
+    if (!migrate_compress()) {
         return 0;
     }
     thread_count = migrate_compress_threads();
@@ -1155,7 +1155,7 @@ static void migration_update_rates(RAMState *rs, int64_t end_time)
         rs->xbzrle_bytes_prev = xbzrle_counters.bytes;
     }
 
-    if (migrate_use_compression()) {
+    if (migrate_compress()) {
         compression_counters.busy_rate = (double)(compression_counters.busy -
             rs->compress_thread_busy_prev) / page_count;
         rs->compress_thread_busy_prev = compression_counters.busy;
@@ -2270,7 +2270,7 @@ int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len)
 
 static bool save_page_use_compression(RAMState *rs)
 {
-    if (!migrate_use_compression()) {
+    if (!migrate_compress()) {
         return false;
     }
 
@@ -3734,7 +3734,7 @@ static int wait_for_decompress_done(void)
 {
     int idx, thread_count;
 
-    if (!migrate_use_compression()) {
+    if (!migrate_compress()) {
         return 0;
     }
 
@@ -3753,7 +3753,7 @@ static void compress_threads_load_cleanup(void)
 {
     int i, thread_count;
 
-    if (!migrate_use_compression()) {
+    if (!migrate_compress()) {
         return;
     }
     thread_count = migrate_decompress_threads();
@@ -3794,7 +3794,7 @@ static int compress_threads_load_setup(QEMUFile *f)
 {
     int i, thread_count;
 
-    if (!migrate_use_compression()) {
+    if (!migrate_compress()) {
         return 0;
     }
 
@@ -4260,7 +4260,7 @@ static int ram_load_precopy(QEMUFile *f)
     int flags = 0, ret = 0, invalid_flags = 0, len = 0, i = 0;
     /* ADVISE is earlier, it shows the source has the postcopy capability on */
     bool postcopy_advised = migration_incoming_postcopy_advised();
-    if (!migrate_use_compression()) {
+    if (!migrate_compress()) {
         invalid_flags |= RAM_SAVE_FLAG_COMPRESS_PAGE;
     }
 
-- 
2.39.1