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migration/rdma: Unfold ram_control_after_iterate()

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Once there:
- Remove unused data parameter
- unfold it in its callers
- change all callers to call qemu_rdma_registration_stop()
- We need to call QIO_CHANNEL_RDMA() after we check for migrate_rdma()

Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231011203527.9061-4-quintela@redhat.com>
This commit is contained in:
Juan Quintela 2023-10-11 22:35:17 +02:00
parent 48408174a7
commit 5f5b8858dc
5 changed files with 21 additions and 22 deletions
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12
migration/qemu-file.c
View File

@ -298,18 +298,6 @@ void qemu_fflush(QEMUFile *f)
f->iovcnt = 0;
}
void ram_control_after_iterate(QEMUFile *f, uint64_t flags)
{
int ret = 0;
if (f->hooks && f->hooks->after_ram_iterate) {
ret = f->hooks->after_ram_iterate(f, flags, NULL);
if (ret < 0) {
qemu_file_set_error(f, ret);
}
}
}
void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data)
{
if (f->hooks && f->hooks->hook_ram_load) {

2
migration/qemu-file.h
View File

@ -55,7 +55,6 @@ typedef int (QEMURamSaveFunc)(QEMUFile *f,
size_t size);
typedef struct QEMUFileHooks {
QEMURamHookFunc *after_ram_iterate;
QEMURamHookFunc *hook_ram_load;
QEMURamSaveFunc *save_page;
} QEMUFileHooks;
@ -126,7 +125,6 @@ void qemu_fflush(QEMUFile *f);
void qemu_file_set_blocking(QEMUFile *f, bool block);
int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size);
void ram_control_after_iterate(QEMUFile *f, uint64_t flags);
void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data);
/* Whenever this is found in the data stream, the flags

17
migration/ram.c
View File

@ -3065,7 +3065,11 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
if (ret < 0) {
qemu_file_set_error(f, ret);
}
ram_control_after_iterate(f, RAM_CONTROL_SETUP);
ret = qemu_rdma_registration_stop(f, RAM_CONTROL_SETUP);
if (ret < 0) {
qemu_file_set_error(f, ret);
}
migration_ops = g_malloc0(sizeof(MigrationOps));
migration_ops->ram_save_target_page = ram_save_target_page_legacy;
@ -3187,7 +3191,10 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
* Must occur before EOS (or any QEMUFile operation)
* because of RDMA protocol.
*/
ram_control_after_iterate(f, RAM_CONTROL_ROUND);
ret = qemu_rdma_registration_stop(f, RAM_CONTROL_ROUND);
if (ret < 0) {
qemu_file_set_error(f, ret);
}
out:
if (ret >= 0
@ -3260,7 +3267,11 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
qemu_mutex_unlock(&rs->bitmap_mutex);
ram_flush_compressed_data(rs);
ram_control_after_iterate(f, RAM_CONTROL_FINISH);
int ret = qemu_rdma_registration_stop(f, RAM_CONTROL_FINISH);
if (ret < 0) {
qemu_file_set_error(f, ret);
}
}
if (ret < 0) {

9
migration/rdma.c
View File

@ -3878,20 +3878,20 @@ int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags)
* Inform dest that dynamic registrations are done for now.
* First, flush writes, if any.
*/
static int qemu_rdma_registration_stop(QEMUFile *f,
uint64_t flags, void *data)
int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags)
{
QIOChannelRDMA *rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f));
QIOChannelRDMA *rioc;
Error *err = NULL;
RDMAContext *rdma;
RDMAControlHeader head = { .len = 0, .repeat = 1 };
int ret;
if (migration_in_postcopy()) {
if (!migrate_rdma() || migration_in_postcopy()) {
return 0;
}
RCU_READ_LOCK_GUARD();
rioc = QIO_CHANNEL_RDMA(qemu_file_get_ioc(f));
rdma = qatomic_rcu_read(&rioc->rdmaout);
if (!rdma) {
return -1;
@ -3999,7 +3999,6 @@ static const QEMUFileHooks rdma_read_hooks = {
};
static const QEMUFileHooks rdma_write_hooks = {
.after_ram_iterate = qemu_rdma_registration_stop,
.save_page = qemu_rdma_save_page,
};

3
migration/rdma.h
View File

@ -25,8 +25,11 @@ void rdma_start_incoming_migration(const char *host_port, Error **errp);
#ifdef CONFIG_RDMA
int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags);
int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags);
#else
static inline
int qemu_rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; }
static inline
int qemu_rdma_registration_stop(QEMUFile *f, uint64_t flags) { return 0; }
#endif
#endif