X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-kernel.c;h=8e074fd91b0dcbe829f8c053d32ac6e92766d32c;hp=0c14052e1a37aeb986ab51ab14e6578caa3d0ad9;hb=645328ae989e5f50a3a49c1ac34b2fee287a3d7b;hpb=850767541647c102a299d7fbc39c97555ac70224

diff --git a/src/bin/lttng-sessiond/trace-kernel.c b/src/bin/lttng-sessiond/trace-kernel.c
index 0c14052e1..8e074fd91 100644
--- a/src/bin/lttng-sessiond/trace-kernel.c
+++ b/src/bin/lttng-sessiond/trace-kernel.c
@@ -159,16 +159,16 @@ struct ltt_kernel_channel *trace_kernel_create_channel(
 		strncpy(lkc->channel->name, DEFAULT_CHANNEL_NAME,
 			sizeof(lkc->channel->name));
 	}
-	lkc->channel->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+	lkc->channel->name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
 
 	lkc->fd = -1;
 	lkc->stream_count = 0;
 	lkc->event_count = 0;
 	lkc->enabled = 1;
-	lkc->ctx = NULL;
 	/* Init linked list */
 	CDS_INIT_LIST_HEAD(&lkc->events_list.head);
 	CDS_INIT_LIST_HEAD(&lkc->stream_list.head);
+	CDS_INIT_LIST_HEAD(&lkc->ctx_list);
 
 	return lkc;
 
@@ -176,6 +176,30 @@ error:
 	return NULL;
 }
 
+/*
+ * Allocate and init a kernel context object.
+ *
+ * Return the allocated object or NULL on error.
+ */
+struct ltt_kernel_context *trace_kernel_create_context(
+		struct lttng_kernel_context *ctx)
+{
+	struct ltt_kernel_context *kctx;
+
+	kctx = zmalloc(sizeof(*kctx));
+	if (!kctx) {
+		PERROR("zmalloc kernel context");
+		goto error;
+	}
+
+	if (ctx) {
+		memcpy(&kctx->ctx, ctx, sizeof(kctx->ctx));
+	}
+
+error:
+	return kctx;
+}
+
 /*
  * Allocate and initialize a kernel event. Set name and event type.
  *
@@ -307,7 +331,7 @@ struct ltt_kernel_stream *trace_kernel_create_stream(const char *name,
 	}
 
 	/* Set name */
-	ret = snprintf(lks->name, sizeof(lks->name), "%s_%d", name, count);
+	ret = snprintf(lks->name, sizeof(lks->name), "%s_%u", name, count);
 	if (ret < 0) {
 		PERROR("snprintf stream name");
 		goto error;
@@ -375,6 +399,17 @@ void trace_kernel_destroy_event(struct ltt_kernel_event *event)
 	free(event);
 }
 
+/*
+ * Cleanup kernel context structure.
+ */
+void trace_kernel_destroy_context(struct ltt_kernel_context *ctx)
+{
+	assert(ctx);
+
+	cds_list_del(&ctx->list);
+	free(ctx);
+}
+
 /*
  * Cleanup kernel channel structure.
  */
@@ -382,6 +417,7 @@ void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel)
 {
 	struct ltt_kernel_stream *stream, *stmp;
 	struct ltt_kernel_event *event, *etmp;
+	struct ltt_kernel_context *ctx, *ctmp;
 	int ret;
 
 	assert(channel);
@@ -405,11 +441,15 @@ void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel)
 		trace_kernel_destroy_event(event);
 	}
 
+	/* For each context in the channel list */
+	cds_list_for_each_entry_safe(ctx, ctmp, &channel->ctx_list, list) {
+		trace_kernel_destroy_context(ctx);
+	}
+
 	/* Remove from channel list */
 	cds_list_del(&channel->list);
 
 	free(channel->channel);
-	free(channel->ctx);
 	free(channel);
 }