+ /* /context */
+ ret = config_writer_close_element(writer);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+static
+int save_kernel_contexts(struct config_writer *writer,
+ struct ltt_kernel_channel *kchan)
+{
+ int ret;
+ struct ltt_kernel_context *ctx;
+
+ if (cds_list_empty(&kchan->ctx_list)) {
+ ret = 0;
+ goto end;
+ }
+
+ ret = config_writer_open_element(writer, config_element_contexts);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ cds_list_for_each_entry(ctx, &kchan->ctx_list, list) {
+ ret = save_kernel_context(writer, &ctx->ctx);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* /contexts */
+ ret = config_writer_close_element(writer);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+end:
+ return ret;
+}
+
+static
+int save_ust_context_perf_thread_counter(struct config_writer *writer,
+ struct ltt_ust_context *ctx)
+{
+ int ret;
+
+ assert(writer);
+ assert(ctx);
+
+ /* Perf contexts are saved as event_perf_context_type */
+ ret = config_writer_open_element(writer, config_element_context_perf);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ ret = config_writer_write_element_unsigned_int(writer,
+ config_element_type, ctx->ctx.u.perf_counter.type);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ ret = config_writer_write_element_unsigned_int(writer,
+ config_element_config, ctx->ctx.u.perf_counter.config);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ ret = config_writer_write_element_string(writer, config_element_name,
+ ctx->ctx.u.perf_counter.name);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ /* /perf */
+ ret = config_writer_close_element(writer);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+end:
+ return ret;
+}
+
+static
+int save_ust_context_app_ctx(struct config_writer *writer,
+ struct ltt_ust_context *ctx)
+{
+ int ret;
+
+ assert(writer);
+ assert(ctx);
+
+ /* Application contexts are saved as application_context_type */
+ ret = config_writer_open_element(writer, config_element_context_app);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ ret = config_writer_write_element_string(writer,
+ config_element_context_app_provider_name,
+ ctx->ctx.u.app_ctx.provider_name);
+ if (ret) {
+ ret = LTTNG_ERR_SAVE_IO_FAIL;
+ goto end;
+ }
+
+ ret = config_writer_write_element_string(writer,
+ config_element_context_app_ctx_name,
+ ctx->ctx.u.app_ctx.ctx_name);