Fix: tracepoint event: allow same provider and event name

Using the same name for the provider (TRACE_SYSTEM) and event name
causes a compilation error because the same identifiers are emitted
twice.

Fix this by prefixing the provider identifier with
"__provider_event_desc___".

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I8cdf8f859e35b8bd5c19737860d12f1ed546dfc2

diff --git a/include/lttng/tracepoint-event-impl.h b/include/lttng/tracepoint-event-impl.h
index 38b1dc438366546e105e359154e9fc98aff01059..dcb22247d4bdb61eef608fe38acbccd0a44ff2e9 100644 (file)
--- a/include/lttng/tracepoint-event-impl.h
+++ b/include/lttng/tracepoint-event-impl.h
@@ -1255,7 +1255,7 @@ static const struct lttng_kernel_event_desc __event_desc___##_map = {     \
 #define TP_ID1(_token, _system)        _token##_system
 #define TP_ID(_token, _system) TP_ID1(_token, _system)
 
-static const struct lttng_kernel_event_desc * const TP_ID(__event_desc___, TRACE_SYSTEM)[] = {
+static const struct lttng_kernel_event_desc * const TP_ID(__provider_event_desc___, TRACE_SYSTEM)[] = {
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 };
 
@@ -1274,8 +1274,8 @@ static const struct lttng_kernel_event_desc * const TP_ID(__event_desc___, TRACE
 /* non-const because list head will be modified when registered. */
 static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
        .provider_name = __stringify(TRACE_SYSTEM),
-       .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM),
-       .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)),
+       .event_desc = TP_ID(__provider_event_desc___, TRACE_SYSTEM),
+       .nr_events = ARRAY_SIZE(TP_ID(__provider_event_desc___, TRACE_SYSTEM)),
        .head = { NULL, NULL },
        .lazy_init_head = { NULL, NULL },
        .lazy = 0,