Fix: remove bad check after epoll wait in consumer

The returned nb_fd value is the number of FD ready for the requested I/O
so having and revents set to 0 is possible since not all fd are ready
thus making this check irrelevant and actually ressource consuming.

Signed-off-by: David Goulet <dgoulet@efficios.com>

diff --git a/src/common/consumer.c b/src/common/consumer.c
index 786a1db7bd93b41ef36f27a978c424d1b434aeaf..256c57a736c3044844be5733c84c92f95f16c47b 100644 (file)
--- a/src/common/consumer.c
+++ b/src/common/consumer.c
@@ -2231,11 +2231,6 @@ restart:
                        revents = LTTNG_POLL_GETEV(&events, i);
                        pollfd = LTTNG_POLL_GETFD(&events, i);
 
-                       /* Just don't waste time if no returned events for the fd */
-                       if (!revents) {
-                               continue;
-                       }
-
                        if (pollfd == lttng_pipe_get_readfd(ctx->consumer_metadata_pipe)) {
                                if (revents & (LPOLLERR | LPOLLHUP )) {
                                        DBG("Metadata thread pipe hung up");