[v4,36/39] dyndbg-test: add test for label keyword
Commit Message
From: Jim Cromie <jim.cromie@gmail.com>
Test the use of the label keyword by selecting, labelling, and
re-labelling a handful of prdbgs:
4 in module/params.c -> param_log
these are labelled and enabled prior to modprobe test_dynamic_debug
trace output to the instance is verified
4 in test-dynamic-debug -> param_log also
2 class'd, 2 un-class'd
After modprobe, all param_log labels are relabelled to new_out, then
doprints reruns the prdbgs, generating new trace output to the new_out
instance.
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
---
.../dynamic_debug/dyndbg_selftest.sh | 65 +++++++++++++++++++
1 file changed, 65 insertions(+)
@@ -859,6 +859,69 @@ function setup_env_for_tests {
echo
}
+function test_labelling {
+ echo -e "${GREEN}# TEST_SITE_LABELLING - ${NC}"
+ ifrmmod test_dynamic_debug
+ ddcmd =_
+
+ # trace params processing of the modprobe
+ ddcmd open,param_log%module,params,+T:param_log.tmfs
+ check_match_ct =T:param_log 4 -r -v
+
+ # modprobe with params. This uses the default_dest :param_log
+ modprobe test_dynamic_debug \
+ dyndbg=class,D2_CORE,+Tmf%class,D2_KMS,+Tmf%class,D2_ATOMIC,+pmT
+
+ # check the trace for params processing during modprobe, with the expected prefixes
+ search_trace_name param_log 5 "params:parse_args:kernel/params.c: doing test_dynamic_debug"
+ search_trace_name param_log 4 "params:parse_one:kernel/params.c: doing test_dynamic_debug"
+
+ # and for the enabled test-module's pr-debugs
+ search_trace_name param_log 3 "test_dynamic_debug:do_cats: test_dd: D2_CORE msg"
+ search_trace_name param_log 2 "test_dynamic_debug:do_cats: test_dd: D2_KMS msg"
+ search_trace_name param_log 1 "test_dynamic_debug: test_dd: D2_ATOMIC msg"
+
+ # now change the labelled sites, by using the existing label
+ ddcmd open new_out
+ ddcmd label param_log +T:new_out # redirect unclassed
+ check_match_ct =T:new_out 4 -r # the module params prdbgs got moved
+ check_match_ct =T:param_log 2 -r # CORE, KMS remain
+ ddcmd label param_log class D2_CORE +T:new_out # must name class to change it
+ ddcmd label param_log class D2_KMS +T:new_out # case for class D2_* (wildcard) ??
+ check_match_ct =T:param_log 0
+ check_match_ct =T:new_out 6 -r # all are redirected
+ check_match_ct =T:new_out.mfst 4 # module/params.c prdbgs still have the flags
+
+ doprints
+ search_trace_name new_out 2 "test_dynamic_debug:do_cats: test_dd: D2_CORE msg"
+ search_trace_name new_out 1 "test_dynamic_debug:do_cats: test_dd: D2_KMS msg"
+
+ check_match_ct =T.new_out 6 -r -v
+ check_match_ct =T: 6 -r -v
+
+ # its not enough to turn off T
+ ddcmd -T
+ ddcmd class D2_CORE -T % class D2_KMS -T
+ check_match_ct =T 0
+ check_match_ct =:new_out 6 -r -v
+
+ # must un-label prdbgs to close the label
+ ddcmd label new_out +:0
+ ddcmd label new_out class D2_CORE +:0
+ ddcmd label new_out class D2_KMS +:0
+ ddcmd close new_out
+
+ check_match_ct =T:param_log 0 # ok, but
+ check_match_ct :param_log 1 -r -v # pick up the D2_ATOMIC
+ ddcmd label param_log class D2_ATOMIC +:0
+ ddcmd close param_log # now it closes wo -EBUSY
+
+ ifrmmod test_dynamic_debug
+
+ del_trace_instance_dir param_log 1
+ del_trace_instance_dir new_out 1
+}
+
tests_list=(
basic_tests
comma_terminator_tests
@@ -878,6 +941,8 @@ tests_list=(
test_private_trace_overlong_name
+ test_labelling
+
# works, takes 30 sec
test_private_trace_fill_trace_index
)