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[Qemu-devel] [PULL 4/8] rdma: introduce capability for chunk registratio
From: |
mrhines |
Subject: |
[Qemu-devel] [PULL 4/8] rdma: introduce capability for chunk registration |
Date: |
Mon, 15 Apr 2013 22:44:42 -0400 |
From: "Michael R. Hines" <address@hidden>
This capability allows you to disable dynamic chunk registration
for better throughput on high-performance links.
It is enabled by default.
Signed-off-by: Michael R. Hines <address@hidden>
---
include/migration/migration.h | 2 ++
migration.c | 11 ++++++++++-
qapi-schema.json | 2 +-
3 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/include/migration/migration.h b/include/migration/migration.h
index 0f4510f..e71ac12 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -144,4 +144,6 @@ size_t ram_control_save_page(QEMUFile *f, ram_addr_t
block_offset,
ram_addr_t offset, size_t size);
void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
+
+bool migrate_chunk_register_destination(void);
#endif
diff --git a/migration.c b/migration.c
index 3b4b467..b46e103 100644
--- a/migration.c
+++ b/migration.c
@@ -66,6 +66,7 @@ MigrationState *migrate_get_current(void)
.state = MIG_STATE_SETUP,
.bandwidth_limit = MAX_THROTTLE,
.xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE,
+ .enabled_capabilities[MIGRATION_CAPABILITY_CHUNK_REGISTER_DESTINATION]
= true,
};
return ¤t_migration;
@@ -120,7 +121,6 @@ void process_incoming_migration(QEMUFile *f)
Coroutine *co = qemu_coroutine_create(process_incoming_migration_co);
int fd = qemu_get_fd(f);
- assert(fd != -1);
qemu_set_nonblock(fd);
qemu_coroutine_enter(co, f);
}
@@ -474,6 +474,15 @@ void qmp_migrate_set_downtime(double value, Error **errp)
max_downtime = (uint64_t)value;
}
+bool migrate_chunk_register_destination(void)
+{
+ MigrationState *s;
+
+ s = migrate_get_current();
+
+ return
s->enabled_capabilities[MIGRATION_CAPABILITY_CHUNK_REGISTER_DESTINATION];
+}
+
int migrate_use_xbzrle(void)
{
MigrationState *s;
diff --git a/qapi-schema.json b/qapi-schema.json
index 751d3c2..691bae6 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -602,7 +602,7 @@
# Since: 1.2
##
{ 'enum': 'MigrationCapability',
- 'data': ['xbzrle'] }
+ 'data': ['xbzrle', 'chunk_register_destination'] }
##
# @MigrationCapabilityStatus
--
1.7.10.4
- [Qemu-devel] [PULL 0/8] rdma: migration support, mrhines, 2013/04/15
- [Qemu-devel] [PULL 2/8] rdma: new QEMUFileOps hooks, mrhines, 2013/04/15
- [Qemu-devel] [PULL 3/8] rdma: export ram_handle_compressed(), mrhines, 2013/04/15
- [Qemu-devel] [PULL 7/8] rdma: print out throughput while debugging, mrhines, 2013/04/15
- [Qemu-devel] [PULL 6/8] rdma: send pc.ram, mrhines, 2013/04/15