Fix: add UST context in the same order the user enabled them

[lttng-tools.git] / src / bin / lttng-sessiond / trace-ust.c

diff --git a/src/bin/lttng-sessiond/trace-ust.c b/src/bin/lttng-sessiond/trace-ust.c
index c80d5e772de8c48e913b5399f23be7af785241c5..8363ae2954912482900e2aa5f3eeeeb4cd7bd26f 100644 (file)
--- a/src/bin/lttng-sessiond/trace-ust.c
+++ b/src/bin/lttng-sessiond/trace-ust.c
@@ -289,6 +289,8 @@ struct ltt_ust_channel *trace_ust_create_channel(struct lttng_channel *chan)
 
        /* Init node */
        lttng_ht_node_init_str(&luc->node, luc->name);
+       CDS_INIT_LIST_HEAD(&luc->ctx_list);
+
        /* Alloc hash tables */
        luc->events = lttng_ht_new(0, LTTNG_HT_TYPE_STRING);
        luc->ctx = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
@@ -463,6 +465,7 @@ struct ltt_ust_context *trace_ust_create_context(
 
        uctx->ctx.ctx = utype;
        lttng_ht_node_init_ulong(&uctx->node, (unsigned long) uctx->ctx.ctx);
+       CDS_INIT_LIST_HEAD(&uctx->list);
 
        return uctx;
 
@@ -491,11 +494,16 @@ static void destroy_contexts(struct lttng_ht *ht)
        int ret;
        struct lttng_ht_node_ulong *node;
        struct lttng_ht_iter iter;
+       struct ltt_ust_context *ctx;
 
        assert(ht);
 
        rcu_read_lock();
        cds_lfht_for_each_entry(ht->ht, &iter.iter, node, node) {
+               /* Remove from ordered list. */
+               ctx = caa_container_of(node, struct ltt_ust_context, node);
+               cds_list_del(&ctx->list);
+               /* Remove from channel's hash table. */
                ret = lttng_ht_del(ht, &iter);
                if (!ret) {
                        call_rcu(&node->head, destroy_context_rcu);