qemu-kvm/kvm-migration-Create-migrate_max_bandwidth-function.patch

From b6228b3122f5c1f220f92042277ab1bfbb5ba086 Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Thu, 2 Mar 2023 11:00:12 +0100
Subject: [PATCH 48/56] migration: Create migrate_max_bandwidth() function
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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: [47/50] 3874656f70cb9c2a30f4d63e146539480d422326 (peterx/qemu-kvm)

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
(cherry picked from commit 9c894df3a37d675652390f7dbbe2f65b7bad7efa)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 70 +-------------------------------------
 migration/options.c   | 79 +++++++++++++++++++++++++++++++++++++++++++
 migration/options.h   |  1 +
 3 files changed, 81 insertions(+), 69 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index 46a5ea4d42..c2e109329d 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -886,74 +886,6 @@ void migrate_send_rp_resume_ack(MigrationIncomingState *mis, uint32_t value)
     migrate_send_rp_message(mis, MIG_RP_MSG_RESUME_ACK, sizeof(buf), &buf);
 }
 
-MigrationParameters *qmp_query_migrate_parameters(Error **errp)
-{
-    MigrationParameters *params;
-    MigrationState *s = migrate_get_current();
-
-    /* TODO use QAPI_CLONE() instead of duplicating it inline */
-    params = g_malloc0(sizeof(*params));
-    params->has_compress_level = true;
-    params->compress_level = s->parameters.compress_level;
-    params->has_compress_threads = true;
-    params->compress_threads = s->parameters.compress_threads;
-    params->has_compress_wait_thread = true;
-    params->compress_wait_thread = s->parameters.compress_wait_thread;
-    params->has_decompress_threads = true;
-    params->decompress_threads = s->parameters.decompress_threads;
-    params->has_throttle_trigger_threshold = true;
-    params->throttle_trigger_threshold = s->parameters.throttle_trigger_threshold;
-    params->has_cpu_throttle_initial = true;
-    params->cpu_throttle_initial = s->parameters.cpu_throttle_initial;
-    params->has_cpu_throttle_increment = true;
-    params->cpu_throttle_increment = s->parameters.cpu_throttle_increment;
-    params->has_cpu_throttle_tailslow = true;
-    params->cpu_throttle_tailslow = s->parameters.cpu_throttle_tailslow;
-    params->tls_creds = g_strdup(s->parameters.tls_creds);
-    params->tls_hostname = g_strdup(s->parameters.tls_hostname);
-    params->tls_authz = g_strdup(s->parameters.tls_authz ?
-                                 s->parameters.tls_authz : "");
-    params->has_max_bandwidth = true;
-    params->max_bandwidth = s->parameters.max_bandwidth;
-    params->has_downtime_limit = true;
-    params->downtime_limit = s->parameters.downtime_limit;
-    params->has_x_checkpoint_delay = true;
-    params->x_checkpoint_delay = s->parameters.x_checkpoint_delay;
-    params->has_block_incremental = true;
-    params->block_incremental = s->parameters.block_incremental;
-    params->has_multifd_channels = true;
-    params->multifd_channels = s->parameters.multifd_channels;
-    params->has_multifd_compression = true;
-    params->multifd_compression = s->parameters.multifd_compression;
-    params->has_multifd_zlib_level = true;
-    params->multifd_zlib_level = s->parameters.multifd_zlib_level;
-    params->has_multifd_zstd_level = true;
-    params->multifd_zstd_level = s->parameters.multifd_zstd_level;
-    params->has_xbzrle_cache_size = true;
-    params->xbzrle_cache_size = s->parameters.xbzrle_cache_size;
-    params->has_max_postcopy_bandwidth = true;
-    params->max_postcopy_bandwidth = s->parameters.max_postcopy_bandwidth;
-    params->has_max_cpu_throttle = true;
-    params->max_cpu_throttle = s->parameters.max_cpu_throttle;
-    params->has_announce_initial = true;
-    params->announce_initial = s->parameters.announce_initial;
-    params->has_announce_max = true;
-    params->announce_max = s->parameters.announce_max;
-    params->has_announce_rounds = true;
-    params->announce_rounds = s->parameters.announce_rounds;
-    params->has_announce_step = true;
-    params->announce_step = s->parameters.announce_step;
-
-    if (s->parameters.has_block_bitmap_mapping) {
-        params->has_block_bitmap_mapping = true;
-        params->block_bitmap_mapping =
-            QAPI_CLONE(BitmapMigrationNodeAliasList,
-                       s->parameters.block_bitmap_mapping);
-    }
-
-    return params;
-}
-
 /*
  * Return true if we're already in the middle of a migration
  * (i.e. any of the active or setup states)
@@ -3775,7 +3707,7 @@ void migrate_fd_connect(MigrationState *s, Error *error_in)
             XFER_LIMIT_RATIO;
     } else {
         /* This is a fresh new migration */
-        rate_limit = s->parameters.max_bandwidth / XFER_LIMIT_RATIO;
+        rate_limit = migrate_max_bandwidth() / XFER_LIMIT_RATIO;
 
         /* Notify before starting migration thread */
         notifier_list_notify(&migration_state_notifiers, s);
diff --git a/migration/options.c b/migration/options.c
index 8bd2d949ae..8e8753d9be 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -12,8 +12,10 @@
  */
 
 #include "qemu/osdep.h"
+#include "qapi/clone-visitor.h"
 #include "qapi/error.h"
 #include "qapi/qapi-commands-migration.h"
+#include "qapi/qapi-visit-migration.h"
 #include "qapi/qmp/qerror.h"
 #include "sysemu/runstate.h"
 #include "migration/misc.h"
@@ -562,6 +564,15 @@ uint8_t migrate_max_cpu_throttle(void)
     return s->parameters.max_cpu_throttle;
 }
 
+uint64_t migrate_max_bandwidth(void)
+{
+    MigrationState *s;
+
+    s = migrate_get_current();
+
+    return s->parameters.max_bandwidth;
+}
+
 int64_t migrate_max_postcopy_bandwidth(void)
 {
     MigrationState *s;
@@ -641,3 +652,71 @@ AnnounceParameters *migrate_announce_params(void)
 
     return &ap;
 }
+
+MigrationParameters *qmp_query_migrate_parameters(Error **errp)
+{
+    MigrationParameters *params;
+    MigrationState *s = migrate_get_current();
+
+    /* TODO use QAPI_CLONE() instead of duplicating it inline */
+    params = g_malloc0(sizeof(*params));
+    params->has_compress_level = true;
+    params->compress_level = s->parameters.compress_level;
+    params->has_compress_threads = true;
+    params->compress_threads = s->parameters.compress_threads;
+    params->has_compress_wait_thread = true;
+    params->compress_wait_thread = s->parameters.compress_wait_thread;
+    params->has_decompress_threads = true;
+    params->decompress_threads = s->parameters.decompress_threads;
+    params->has_throttle_trigger_threshold = true;
+    params->throttle_trigger_threshold = s->parameters.throttle_trigger_threshold;
+    params->has_cpu_throttle_initial = true;
+    params->cpu_throttle_initial = s->parameters.cpu_throttle_initial;
+    params->has_cpu_throttle_increment = true;
+    params->cpu_throttle_increment = s->parameters.cpu_throttle_increment;
+    params->has_cpu_throttle_tailslow = true;
+    params->cpu_throttle_tailslow = s->parameters.cpu_throttle_tailslow;
+    params->tls_creds = g_strdup(s->parameters.tls_creds);
+    params->tls_hostname = g_strdup(s->parameters.tls_hostname);
+    params->tls_authz = g_strdup(s->parameters.tls_authz ?
+                                 s->parameters.tls_authz : "");
+    params->has_max_bandwidth = true;
+    params->max_bandwidth = s->parameters.max_bandwidth;
+    params->has_downtime_limit = true;
+    params->downtime_limit = s->parameters.downtime_limit;
+    params->has_x_checkpoint_delay = true;
+    params->x_checkpoint_delay = s->parameters.x_checkpoint_delay;
+    params->has_block_incremental = true;
+    params->block_incremental = s->parameters.block_incremental;
+    params->has_multifd_channels = true;
+    params->multifd_channels = s->parameters.multifd_channels;
+    params->has_multifd_compression = true;
+    params->multifd_compression = s->parameters.multifd_compression;
+    params->has_multifd_zlib_level = true;
+    params->multifd_zlib_level = s->parameters.multifd_zlib_level;
+    params->has_multifd_zstd_level = true;
+    params->multifd_zstd_level = s->parameters.multifd_zstd_level;
+    params->has_xbzrle_cache_size = true;
+    params->xbzrle_cache_size = s->parameters.xbzrle_cache_size;
+    params->has_max_postcopy_bandwidth = true;
+    params->max_postcopy_bandwidth = s->parameters.max_postcopy_bandwidth;
+    params->has_max_cpu_throttle = true;
+    params->max_cpu_throttle = s->parameters.max_cpu_throttle;
+    params->has_announce_initial = true;
+    params->announce_initial = s->parameters.announce_initial;
+    params->has_announce_max = true;
+    params->announce_max = s->parameters.announce_max;
+    params->has_announce_rounds = true;
+    params->announce_rounds = s->parameters.announce_rounds;
+    params->has_announce_step = true;
+    params->announce_step = s->parameters.announce_step;
+
+    if (s->parameters.has_block_bitmap_mapping) {
+        params->has_block_bitmap_mapping = true;
+        params->block_bitmap_mapping =
+            QAPI_CLONE(BitmapMigrationNodeAliasList,
+                       s->parameters.block_bitmap_mapping);
+    }
+
+    return params;
+}
diff --git a/migration/options.h b/migration/options.h
index 093bc907a1..1b78fa9f3d 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -64,6 +64,7 @@ uint8_t migrate_cpu_throttle_initial(void);
 bool migrate_cpu_throttle_tailslow(void);
 int migrate_decompress_threads(void);
 uint8_t migrate_max_cpu_throttle(void);
+uint64_t migrate_max_bandwidth(void);
 int64_t migrate_max_postcopy_bandwidth(void);
 int migrate_multifd_channels(void);
 MultiFDCompression migrate_multifd_compression(void);
-- 
2.39.1