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Tsirkin" , "Dr. David Alan Gilbert" , Eric Blake Subject: [PATCH 09/43] migration: Move migrate_use_zero_copy_send() to options.c Date: Thu, 2 Mar 2023 17:33:36 +0100 Message-Id: <20230302163410.11399-10-quintela@redhat.com> In-Reply-To: <20230302163410.11399-1-quintela@redhat.com> References: <20230302163410.11399-1-quintela@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Received-SPF: pass client-ip=170.10.133.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 --- migration/migration.h | 5 ----- migration/options.h | 1 + migration/migration.c | 13 +------------ migration/multifd.c | 8 ++++---- migration/options.c | 9 +++++++++ migration/socket.c | 2 +- 6 files changed, 16 insertions(+), 22 deletions(-) diff --git a/migration/migration.h b/migration/migration.h index 19008fae0b..7b82913c62 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -415,11 +415,6 @@ 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); diff --git a/migration/options.h b/migration/options.h index a4f05a5e13..413ef29a2a 100644 --- a/migration/options.h +++ b/migration/options.h @@ -34,5 +34,6 @@ 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 diff --git a/migration/migration.c b/migration/migration.c index 97daab9fd4..48cffab413 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -1607,7 +1607,7 @@ 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, @@ -2593,17 +2593,6 @@ 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; diff --git a/migration/multifd.c b/migration/multifd.c index 95127feb8b..29d66f5860 100644 --- a/migration/multifd.c +++ b/migration/multifd.c @@ -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()); @@ -944,7 +944,7 @@ 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; diff --git a/migration/options.c b/migration/options.c index 59663c460e..2e00609b7b 100644 --- a/migration/options.c +++ b/migration/options.c @@ -157,3 +157,12 @@ 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]; +} diff --git a/migration/socket.c b/migration/socket.c index f4835a256a..1b6f5baefb 100644 --- a/migration/socket.c +++ b/migration/socket.c @@ -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"); } -- 2.39.2