tests: test kernel snapshot with discard buffers

[lttng-tools.git] / tests / utils / utils.sh

diff --git a/tests/utils/utils.sh b/tests/utils/utils.sh
index c59442b22c09cc45db2c5118a46aa75a30c25cc1..da2efe91a72264b93cd5c67b8d46cf28c53408d2 100644 (file)
--- a/tests/utils/utils.sh
+++ b/tests/utils/utils.sh
@@ -735,6 +735,24 @@ function enable_lttng_mmap_overwrite_kernel_channel()
        ok $? "Enable channel $channel_name for session $sess_name"
 }
 
+function enable_lttng_mmap_discard_small_kernel_channel()
+{
+       local sess_name=$1
+       local channel_name=$2
+
+       $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --discard --subbuf-size=$(getconf PAGE_SIZE) --num-subbuf=2 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+       ok $? "Enable small discard channel $channel_name for session $sess_name"
+}
+
+function enable_lttng_mmap_overwrite_small_kernel_channel()
+{
+       local sess_name=$1
+       local channel_name=$2
+
+       $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -s $sess_name $channel_name -k --output mmap --overwrite --subbuf-size=$(getconf PAGE_SIZE) --num-subbuf=2 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+       ok $? "Enable small discard channel $channel_name for session $sess_name"
+}
+
 function enable_lttng_mmap_overwrite_ust_channel()
 {
        local sess_name=$1
@@ -1276,6 +1294,18 @@ function validate_trace
        return $ret
 }
 
+function trace_first_line
+{
+       local trace_path=$1
+
+       which $BABELTRACE_BIN >/dev/null
+       if [ $? -ne 0 ]; then
+           skip 0 "Babeltrace binary not found. Skipping trace validation"
+       fi
+
+       $BABELTRACE_BIN $trace_path 2>/dev/null | head -n 1
+}
+
 function validate_trace_exp()
 {
        local event_exp=$1