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migration: Move migrate_use_zero_copy_send() to options.c

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

We can remove the CONFIG_LINUX guard.  We already check that we can't
setup this capability in migrate_caps_check().

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
This commit is contained in:
Juan Quintela 2023-03-01 22:17:14 +01:00
parent 51b07548f7
commit b4bc342c76
6 changed files with 16 additions and 22 deletions
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13
migration/migration.c
View File

@ -1609,7 +1609,7 @@ static bool migrate_params_check(MigrationParameters *params, Error **errp)
}
#ifdef CONFIG_LINUX
if (migrate_use_zero_copy_send() &&
if (migrate_zero_copy_send() &&
((params->has_multifd_compression && params->multifd_compression) ||
(params->tls_creds && *params->tls_creds))) {
error_setg(errp,
@ -2595,17 +2595,6 @@ int migrate_multifd_zstd_level(void)
return s->parameters.multifd_zstd_level;
}
#ifdef CONFIG_LINUX
bool migrate_use_zero_copy_send(void)
{
MigrationState *s;
s = migrate_get_current();
return s->capabilities[MIGRATION_CAPABILITY_ZERO_COPY_SEND];
}
#endif
int migrate_use_tls(void)
{
MigrationState *s;

5
migration/migration.h
View File

@ -454,11 +454,6 @@ MultiFDCompression migrate_multifd_compression(void);
int migrate_multifd_zlib_level(void);
int migrate_multifd_zstd_level(void);
#ifdef CONFIG_LINUX
bool migrate_use_zero_copy_send(void);
#else
#define migrate_use_zero_copy_send() (false)
#endif
int migrate_use_tls(void);
int migrate_use_xbzrle(void);
uint64_t migrate_xbzrle_cache_size(void);

8
migration/multifd.c
View File

@ -25,7 +25,7 @@
#include "trace.h"
#include "multifd.h"
#include "threadinfo.h"
#include "options.h"
#include "qemu/yank.h"
#include "io/channel-socket.h"
#include "yank_functions.h"
@ -608,7 +608,7 @@ int multifd_send_sync_main(QEMUFile *f)
* all the dirty bitmaps.
*/
flush_zero_copy = migrate_use_zero_copy_send();
flush_zero_copy = migrate_zero_copy_send();
for (i = 0; i < migrate_multifd_channels(); i++) {
MultiFDSendParams *p = &multifd_send_state->params[i];
@ -653,7 +653,7 @@ static void *multifd_send_thread(void *opaque)
MigrationThread *thread = NULL;
Error *local_err = NULL;
int ret = 0;
bool use_zero_copy_send = migrate_use_zero_copy_send();
bool use_zero_copy_send = migrate_zero_copy_send();
thread = MigrationThreadAdd(p->name, qemu_get_thread_id());
@ -945,7 +945,7 @@ int multifd_save_setup(Error **errp)
p->page_size = qemu_target_page_size();
p->page_count = page_count;
if (migrate_use_zero_copy_send()) {
if (migrate_zero_copy_send()) {
p->write_flags = QIO_CHANNEL_WRITE_FLAG_ZERO_COPY;
} else {
p->write_flags = 0;

9
migration/options.c
View File

@ -155,3 +155,12 @@ bool migrate_zero_blocks(void)
return s->capabilities[MIGRATION_CAPABILITY_ZERO_BLOCKS];
}
bool migrate_zero_copy_send(void)
{
MigrationState *s;
s = migrate_get_current();
return s->capabilities[MIGRATION_CAPABILITY_ZERO_COPY_SEND];
}

1
migration/options.h
View File

@ -32,5 +32,6 @@ bool migrate_postcopy_ram(void);
bool migrate_release_ram(void);
bool migrate_validate_uuid(void);
bool migrate_zero_blocks(void);
bool migrate_zero_copy_send(void);
#endif

2
migration/socket.c
View File

@ -98,7 +98,7 @@ static void socket_outgoing_migration(QIOTask *task,
trace_migration_socket_outgoing_connected(data->hostname);
if (migrate_use_zero_copy_send() &&
if (migrate_zero_copy_send() &&
!qio_channel_has_feature(sioc, QIO_CHANNEL_FEATURE_WRITE_ZERO_COPY)) {
error_setg(&err, "Zero copy send feature not detected in host kernel");
}