Gen-ust-events: use options instead of arguments

[lttng-tools.git] / tests / regression / tools / snapshots / test_kernel

diff --git a/tests/regression/tools/snapshots/test_kernel b/tests/regression/tools/snapshots/test_kernel
index b4c7f9146e86f02ab7d84c82c6694e40a34e48d9..f6f9508ebb07b3527b7cae00d855cedcaaed394e 100755 (executable)
--- a/tests/regression/tools/snapshots/test_kernel
+++ b/tests/regression/tools/snapshots/test_kernel
@@ -19,22 +19,15 @@ TEST_DESC="Snapshots - Kernel tracing"
 CURDIR=$(dirname $0)/
 TESTDIR=$CURDIR/../../..
 EVENT_NAME="sched_switch"
-PID_RELAYD=0
 SESSION_NAME=""
 CHANNEL_NAME="snapchan"
 
 TRACE_PATH=$(mktemp -d)
 
-NUM_TESTS=2040
+NUM_TESTS=2060
 
 source $TESTDIR/utils/utils.sh
 
-# LTTng kernel modules check
-out=`ls /lib/modules/$(uname -r)/extra | grep lttng`
-if [ -z "$out" ]; then
-       BAIL_OUT "LTTng modules not detected."
-fi
-
 function test_kernel_local_snapshot ()
 {
        diag "Test local kernel snapshots"
@@ -42,10 +35,10 @@ function test_kernel_local_snapshot ()
        enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
        lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
        start_lttng_tracing_ok $SESSION_NAME
-       lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+       lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
        lttng_snapshot_record $SESSION_NAME
        stop_lttng_tracing_ok $SESSION_NAME
-       destroy_lttng_session $SESSION_NAME
+       destroy_lttng_session_ok $SESSION_NAME
 
        # Validate test
        validate_trace $EVENT_NAME $TRACE_PATH/
@@ -65,9 +58,9 @@ function test_kernel_local_snapshot_after_stop ()
        lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
        start_lttng_tracing_ok $SESSION_NAME
        stop_lttng_tracing_ok $SESSION_NAME
-       lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+       lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
        lttng_snapshot_record $SESSION_NAME
-       destroy_lttng_session $SESSION_NAME
+       destroy_lttng_session_ok $SESSION_NAME
 
        # Validate test
        validate_trace $EVENT_NAME $TRACE_PATH/
@@ -89,7 +82,7 @@ function test_kernel_local_snapshot_append_to_metadata ()
        enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
        lttng_enable_kernel_event $SESSION_NAME $EVENT1 $CHANNEL_NAME
        start_lttng_tracing_ok $SESSION_NAME
-       lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+       lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
 
        # first snapshot with only 1 event
        lttng_snapshot_record $SESSION_NAME
@@ -115,7 +108,91 @@ function test_kernel_local_snapshot_append_to_metadata ()
        fi
 
        stop_lttng_tracing_ok $SESSION_NAME
-       destroy_lttng_session $SESSION_NAME
+       destroy_lttng_session_ok $SESSION_NAME
+}
+
+function true_loop_cpu0()
+{
+       # Generate many system call events (fill buffers) on CPU 0
+       for a in $(seq 1 $1); do
+               taskset 0x00000001 /bin/true;
+       done
+}
+
+function test_kernel_local_snapshot_discard ()
+{
+       diag "Test local kernel snapshots with small discard buffers"
+       create_lttng_session_no_output $SESSION_NAME
+       enable_lttng_mmap_discard_small_kernel_channel $SESSION_NAME \
+                       $CHANNEL_NAME
+       lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
+       start_lttng_tracing_ok $SESSION_NAME
+       lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
+
+       true_loop_cpu0 10000
+
+       # Take first snapshot, remember first line.
+       lttng_snapshot_record $SESSION_NAME
+       FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
+       diag "First line (1st snapshot): $FIRST_LINE"
+
+       rm -rf $TRACE_PATH
+
+       true_loop_cpu0 10000
+
+       # Take 2nd snapshot, compare first line. In discard mode, they
+       # should still be the same.
+       lttng_snapshot_record $SESSION_NAME
+       FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
+       diag "First line (2nd snapshot): $FIRST_LINE"
+       rm -rf $TRACE_PATH
+
+       if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
+               fail "First snapshot event do not match."
+       else
+               pass "First snapshot event match."
+       fi
+
+       stop_lttng_tracing_ok $SESSION_NAME
+       destroy_lttng_session_ok $SESSION_NAME
+}
+
+function test_kernel_local_snapshot_overwrite_small_buffers ()
+{
+       diag "Test local kernel snapshot with small overwrite buffers"
+       create_lttng_session_no_output $SESSION_NAME
+       enable_lttng_mmap_overwrite_small_kernel_channel $SESSION_NAME \
+                       $CHANNEL_NAME
+       lttng_enable_kernel_syscall_ok $SESSION_NAME -a $CHANNEL_NAME
+       start_lttng_tracing_ok $SESSION_NAME
+       lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
+
+       true_loop_cpu0 10000
+
+       # Take first snapshot, remember first line.
+       lttng_snapshot_record $SESSION_NAME
+       FIRST_LINE="$(trace_first_line $TRACE_PATH/)"
+       diag "First line (1st snapshot): $FIRST_LINE"
+
+       rm -rf $TRACE_PATH
+
+       true_loop_cpu0 10000
+
+       # Take 2nd snapshot, compare first line. In overwrite mode, they
+       # WILL be different.
+       lttng_snapshot_record $SESSION_NAME
+       FIRST_LINE_2="$(trace_first_line $TRACE_PATH/)"
+       diag "First line (2nd snapshot): $FIRST_LINE_2"
+       rm -rf $TRACE_PATH
+
+       if [ x"$FIRST_LINE" != x"$FIRST_LINE_2" ]; then
+               pass "First snapshot event do not match."
+       else
+               fail "First snapshot event match."
+       fi
+
+       stop_lttng_tracing_ok $SESSION_NAME
+       destroy_lttng_session_ok $SESSION_NAME
 }
 
 function test_kernel_1000_local_snapshots ()
@@ -127,7 +204,7 @@ function test_kernel_1000_local_snapshots ()
        enable_lttng_mmap_overwrite_kernel_channel $SESSION_NAME $CHANNEL_NAME
        lttng_enable_kernel_event $SESSION_NAME $EVENT_NAME $CHANNEL_NAME
        start_lttng_tracing_ok $SESSION_NAME
-       lttng_snapshot_add_output $SESSION_NAME $TRACE_PATH
+       lttng_snapshot_add_output_ok $SESSION_NAME $TRACE_PATH
        for i in $(seq 1 $NB_SNAP); do
                diag "Snapshot $i/$NB_SNAP"
                rm -rf $TRACE_PATH/snapshot/* 2>/dev/null
@@ -142,7 +219,7 @@ function test_kernel_1000_local_snapshots ()
                fi
        done
        stop_lttng_tracing_ok $SESSION_NAME
-       destroy_lttng_session $SESSION_NAME
+       destroy_lttng_session_ok $SESSION_NAME
 }
 
 plan_tests $NUM_TESTS
@@ -157,10 +234,19 @@ fi
 
 skip $isroot "Root access is needed. Skipping all kernel snapshot tests." $NUM_TESTS ||
 {
+
+       validate_lttng_modules_present
+
        start_lttng_sessiond
 
        #tests=( test_kernel_1000_local_snapshots )
-       tests=( test_kernel_local_snapshot test_kernel_local_snapshot_after_stop test_kernel_local_snapshot_append_to_metadata test_kernel_1000_local_snapshots )
+       tests=( test_kernel_local_snapshot
+               test_kernel_local_snapshot_after_stop
+               test_kernel_local_snapshot_append_to_metadata
+               test_kernel_local_snapshot_discard
+               test_kernel_local_snapshot_overwrite_small_buffers
+               test_kernel_1000_local_snapshots
+       )
 
        for fct_test in ${tests[@]};
        do