Introduce LTTNG_IOCTL_CHECK and LTTNG_IOCTL_NO_CHECK macros

[lttng-tools.git] / src / common / kernel-consumer / kernel-consumer.c

diff --git a/src/common/kernel-consumer/kernel-consumer.c b/src/common/kernel-consumer/kernel-consumer.c
index 9e3540426620f64f89cf69c8bbefa3cbe08f8962..68dcc02309a452c756838c6947ecdf0e6a76957b 100644 (file)
--- a/src/common/kernel-consumer/kernel-consumer.c
+++ b/src/common/kernel-consumer/kernel-consumer.c
@@ -118,7 +118,6 @@ int lttng_kconsumer_snapshot_channel(uint64_t key, char *path,
                struct lttng_consumer_local_data *ctx)
 {
        int ret;
-       unsigned long consumed_pos, produced_pos;
        struct lttng_consumer_channel *channel;
        struct lttng_consumer_stream *stream;
 
@@ -143,6 +142,7 @@ int lttng_kconsumer_snapshot_channel(uint64_t key, char *path,
        cds_list_for_each_entry(stream, &channel->streams.head, send_node) {
                /* Are we at a position _before_ the first available packet ? */
                bool before_first_packet = true;
+               unsigned long consumed_pos, produced_pos;
 
                health_code_update();
 
@@ -969,18 +969,18 @@ int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
                uint64_t id = msg.u.discarded_events.session_id;
                uint64_t key = msg.u.discarded_events.channel_key;
 
+               DBG("Kernel consumer discarded events command for session id %"
+                               PRIu64 ", channel key %" PRIu64, id, key);
+
                channel = consumer_find_channel(key);
                if (!channel) {
                        ERR("Kernel consumer discarded events channel %"
                                        PRIu64 " not found", key);
-                       ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+                       ret = 0;
+               } else {
+                       ret = channel->discarded_events;
                }
 
-               DBG("Kernel consumer discarded events command for session id %"
-                               PRIu64 ", channel key %" PRIu64, id, key);
-
-               ret = channel->discarded_events;
-
                health_code_update();
 
                /* Send back returned value to session daemon */
@@ -999,18 +999,18 @@ int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
                uint64_t id = msg.u.lost_packets.session_id;
                uint64_t key = msg.u.lost_packets.channel_key;
 
+               DBG("Kernel consumer lost packets command for session id %"
+                               PRIu64 ", channel key %" PRIu64, id, key);
+
                channel = consumer_find_channel(key);
                if (!channel) {
                        ERR("Kernel consumer lost packets channel %"
                                        PRIu64 " not found", key);
-                       ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+                       ret = 0;
+               } else {
+                       ret = channel->lost_packets;
                }
 
-               DBG("Kernel consumer lost packets command for session id %"
-                               PRIu64 ", channel key %" PRIu64, id, key);
-
-               ret = channel->lost_packets;
-
                health_code_update();
 
                /* Send back returned value to session daemon */
@@ -1186,8 +1186,8 @@ int update_stream_stats(struct lttng_consumer_stream *stream)
        }
        if (discarded < stream->last_discarded_events) {
                /*
-                * Overflow has occured. We assume only one wrap-around
-                * has occured.
+                * Overflow has occurred. We assume only one wrap-around
+                * has occurred.
                 */
                stream->chan->discarded_events += (1ULL << (CAA_BITS_PER_LONG - 1)) -
                        stream->last_discarded_events + discarded;