X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-events.h;h=2b1370520ecd85ab4d39364586ee08fe949d1f6a;hb=3c1a57e8ce82366ce96774e4ac1d7481c561cc4c;hp=19dd2d30d0d99b71d4cc96f1d0cc95ebf9716756;hpb=1474c8e2ef816a275305fe975b82ca6c50f5eca7;p=lttng-modules.git

diff --git a/lttng-events.h b/lttng-events.h
index 19dd2d30..2b137052 100644
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -219,6 +219,12 @@ struct lttng_ctx_field {
 		struct lttng_perf_counter_field *perf_counter;
 	} u;
 	void (*destroy)(struct lttng_ctx_field *field);
+	/*
+	 * Private data to keep state between get_size and record.
+	 * User must perform its own synchronization to protect against
+	 * concurrent and reentrant contexts.
+	 */
+	void *priv;
 };
 
 struct lttng_ctx {
@@ -708,6 +714,9 @@ int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx)
 	return -ENOSYS;
 }
 #endif
+
+int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type);
+
 #if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
 int lttng_add_perf_counter_to_ctx(uint32_t type,
 				  uint64_t config,