Fix testcases after removal of non-smp emulator

16 files changed, 142 insertions, 326 deletions

diff --git a/erts/emulator/test/alloc_SUITE.erl b/erts/emulator/test/alloc_SUITE.erl
index 3a721095e2..f0871ead7d 100644
--- a/erts/emulator/test/alloc_SUITE.erl
+++ b/erts/emulator/test/alloc_SUITE.erl
@@ -65,12 +65,7 @@ mseg_clear_cache(Cfg) -> drv_case(Cfg).
 cpool(Cfg) -> drv_case(Cfg).
 
 migration(Cfg) ->
-    case erlang:system_info(smp_support) of
-	true ->
-	    drv_case(Cfg, concurrent, "+MZe true");
-	false ->
-	    {skipped, "No smp"}
-    end.
+    drv_case(Cfg, concurrent, "+MZe true").
 
 erts_mmap(Config) when is_list(Config) ->
     case {os:type(), mmsc_flags()} of
diff --git a/erts/emulator/test/driver_SUITE.erl b/erts/emulator/test/driver_SUITE.erl
index 6810729285..5fca191679 100644
--- a/erts/emulator/test/driver_SUITE.erl
+++ b/erts/emulator/test/driver_SUITE.erl
@@ -1144,8 +1144,6 @@ check_si_res(["thread", "false"]) ->
     false = erlang:system_info(threads);
 check_si_res(["smp", "true"]) ->
     true = erlang:system_info(smp_support);
-check_si_res(["smp", "false"]) ->
-    false = erlang:system_info(smp_support);
 
 %% Data added in second version of driver_system_info() (driver version 1.1)
 check_si_res(["async_thrs", Value]) ->
@@ -1944,44 +1942,39 @@ thr_msg_blast_receiver_proc(Port, Max, Parent, Done) ->
     end.
 
 thr_msg_blast(Config) when is_list(Config) ->
-    case erlang:system_info(smp_support) of
-        false ->
-            {skipped, "Non-SMP emulator; nothing to test..."};
-        true ->
-            Path = proplists:get_value(data_dir, Config),
-            erl_ddll:start(),
-            ok = load_driver(Path, thr_msg_blast_drv),
-            MemBefore = driver_alloc_size(),
-            Start = os:timestamp(),
-            Port = open_port({spawn, thr_msg_blast_drv}, []),
-            true = is_port(Port),
-            Done = make_ref(),
-            Me = self(),
-            spawn(fun () ->
-                          thr_msg_blast_receiver_proc(Port, 1, Me, Done)
-                  end),
-            receive
-                Done -> ok
-            end,
-            ok = thr_msg_blast_receiver(Port, 0, 32*10000),
-            port_close(Port),
-            End = os:timestamp(),
-            receive
-                Garbage ->
-                    ct:fail({received_garbage, Port, Garbage})
-            after 2000 ->
-                      ok
-            end,
-            MemAfter = driver_alloc_size(),
-            io:format("MemBefore=~p, MemAfter=~p~n",
-                      [MemBefore, MemAfter]),
-            ThrMsgBlastTime = timer:now_diff(End,Start)/1000000,
-            io:format("ThrMsgBlastTime=~p~n", [ThrMsgBlastTime]),
-            MemBefore = MemAfter,
-            Res = {thr_msg_blast_time, ThrMsgBlastTime},
-            erlang:display(Res),
-            Res
-    end.
+    Path = proplists:get_value(data_dir, Config),
+    erl_ddll:start(),
+    ok = load_driver(Path, thr_msg_blast_drv),
+    MemBefore = driver_alloc_size(),
+    Start = os:timestamp(),
+    Port = open_port({spawn, thr_msg_blast_drv}, []),
+    true = is_port(Port),
+    Done = make_ref(),
+    Me = self(),
+    spawn(fun () ->
+                  thr_msg_blast_receiver_proc(Port, 1, Me, Done)
+          end),
+    receive
+        Done -> ok
+    end,
+    ok = thr_msg_blast_receiver(Port, 0, 32*10000),
+    port_close(Port),
+    End = os:timestamp(),
+    receive
+        Garbage ->
+            ct:fail({received_garbage, Port, Garbage})
+    after 2000 ->
+            ok
+    end,
+    MemAfter = driver_alloc_size(),
+    io:format("MemBefore=~p, MemAfter=~p~n",
+              [MemBefore, MemAfter]),
+    ThrMsgBlastTime = timer:now_diff(End,Start)/1000000,
+    io:format("ThrMsgBlastTime=~p~n", [ThrMsgBlastTime]),
+    MemBefore = MemAfter,
+    Res = {thr_msg_blast_time, ThrMsgBlastTime},
+    erlang:display(Res),
+    Res.
 
 -define(IN_RANGE(LoW_, VaLuE_, HiGh_),
         case in_range(LoW_, VaLuE_, HiGh_) of
@@ -2488,14 +2481,6 @@ wait_deallocations() ->
     end.
 
 driver_alloc_size() ->
-    case erlang:system_info(smp_support) of
-        true ->
-            ok;
-        false ->
-            %% driver_alloc also used by elements in lock-free queues,
-            %% give these some time to be deallocated...
-            receive after 100 -> ok end
-    end,
     wait_deallocations(),
     case erlang:system_info({allocator_sizes, driver_alloc}) of
         false ->
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl
index 05c250125d..47f9a6e712 100644
--- a/erts/emulator/test/nif_SUITE.erl
+++ b/erts/emulator/test/nif_SUITE.erl
@@ -1721,14 +1721,9 @@ send2(Config) when is_list(Config) ->
 
 %% Send msg from user thread
 send_threaded(Config) when is_list(Config) ->
-    case erlang:system_info(smp_support) of
-	true ->
-	    send2_do1(fun(ME,To) -> send_blob_thread_dbg(ME,To,join) end),
-	    send2_do1(fun(ME,To) -> send_blob_thread_and_join(ME,To) end),
-	    ok;
-	false ->
-	    {skipped,"No threaded send on non-SMP"}
-    end.
+    send2_do1(fun(ME,To) -> send_blob_thread_dbg(ME,To,join) end),
+    send2_do1(fun(ME,To) -> send_blob_thread_and_join(ME,To) end),
+    ok.
 
 
 send2_do1(SendBlobF) ->
diff --git a/erts/emulator/test/port_trace_SUITE.erl b/erts/emulator/test/port_trace_SUITE.erl
index c78dc754a9..a1986397a8 100644
--- a/erts/emulator/test/port_trace_SUITE.erl
+++ b/erts/emulator/test/port_trace_SUITE.erl
@@ -78,13 +78,6 @@ end_per_group(_GroupName, Config) ->
     Config.
 
 
-init_per_testcase(driver_remote_send_term, Config) ->
-    case erlang:system_info(smp_support) of
-        false ->
-            {skip,"Only supported on smp systems"};
-        true ->
-            init_per_testcase(driver_remote_send_term_smp, Config)
-    end;
 init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
     erlang:trace(all, false, [all]),
     os:unsetenv("OUTPUTV"),
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl
index af33de237c..12e26671c2 100644
--- a/erts/emulator/test/scheduler_SUITE.erl
+++ b/erts/emulator/test/scheduler_SUITE.erl
@@ -1083,7 +1083,6 @@ sbt_test(Config, CpuTCmd, ClBt, Bt, LP) ->
     ok.
 
 scheduler_threads(Config) when is_list(Config) ->
-    SmpSupport = erlang:system_info(smp_support),
     {Sched, SchedOnln, _} = get_sstate(Config, ""),
     %% Configure half the number of both the scheduler threads and
     %% the scheduler threads online.
@@ -1095,10 +1094,7 @@ scheduler_threads(Config) when is_list(Config) ->
     %% setting using +SP to 50% scheduler threads and 25% scheduler
     %% threads online. The result should be 2x scheduler threads and
     %% 1x scheduler threads online.
-    TwiceSched = case SmpSupport of
-                     false -> 1;
-                     true -> Sched*2
-                 end,
+    TwiceSched = Sched*2,
     FourSched = integer_to_list(Sched*4),
     FourSchedOnln = integer_to_list(SchedOnln*4),
     CombinedCmd1 = "+S "++FourSched++":"++FourSchedOnln++" +SP50:25",
@@ -1121,8 +1117,8 @@ scheduler_threads(Config) when is_list(Config) ->
 	    ResetCmd = "+S "++FourSched++":"++FourSchedOnln++" +S 0:0",
 	    {LProc, LProcAvail, _} = get_sstate(Config, ResetCmd),
 	    %% Test negative +S settings, but only for SMP-enabled emulators
-	    case {SmpSupport, LProc > 1, LProcAvail > 1} of
-		{true, true, true} ->
+	    case {LProc > 1, LProcAvail > 1} of
+		{true, true} ->
 		    SchedMinus1 = LProc-1,
 		    SchedOnlnMinus1 = LProcAvail-1,
 		    {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1"),
@@ -1157,9 +1153,6 @@ dirty_scheduler_threads_test(Config) ->
     ok.
 
 dirty_schedulers_online_test() ->
-    dirty_schedulers_online_test(erlang:system_info(smp_support)).
-dirty_schedulers_online_test(false) -> ok;
-dirty_schedulers_online_test(true) ->
     dirty_schedulers_online_smp_test(erlang:system_info(schedulers_online)).
 dirty_schedulers_online_smp_test(SchedOnln) when SchedOnln < 4 -> ok;
 dirty_schedulers_online_smp_test(SchedOnln) ->
diff --git a/erts/emulator/test/signal_SUITE.erl b/erts/emulator/test/signal_SUITE.erl
index f1d11d1814..61a8617165 100644
--- a/erts/emulator/test/signal_SUITE.erl
+++ b/erts/emulator/test/signal_SUITE.erl
@@ -139,71 +139,66 @@ pending_exit_gc(Config) when is_list(Config) ->
     pending_exit_test(self(), gc).
 
 pending_exit_test(From, Type) ->
-    case catch erlang:system_info(smp_support) of
-        true ->
-            OTE = process_flag(trap_exit, true),
-            Ref = make_ref(),
-            Master = self(),
-            ExitBySignal = case Type of
-                               gc ->
-                                   lists:duplicate(10000,
-                                                   exit_by_signal);
-                               _ ->
-                                   exit_by_signal
-                           end,
-            Pid = spawn_link(
-                    fun () ->
-                            receive go -> ok end,
-                            false = have_pending_exit(),
-                            exit = fake_exit(From,
-                                             self(),
-                                             ExitBySignal),
-                            true = have_pending_exit(),
-                            Master ! {self(), Ref, Type},
-                            case Type of
-                                gc ->
-                                    force_gc(),
-                                    erlang:yield();
-                                unlink ->
-                                    unlink(From);
-                                trap_exit ->
-                                    process_flag(trap_exit, true);
-                                'receive' ->
-                                    receive _ -> ok
-                                    after 0 -> ok
-                                    end;
-                                exit ->
-                                    ok
-                            end,
-                            exit(exit_by_myself)
-                    end),
-            Mon = erlang:monitor(process, Pid),
-            Pid ! go,
-            Reason = receive
-                         {'DOWN', Mon, process, Pid, R} ->
-                             receive
-                                 {Pid, Ref, Type} ->
-                                     ok
-                             after 0 ->
-                                       ct:fail(premature_exit)
-                             end,
-                             case Type of
-                                 exit ->
-                                     exit_by_myself = R;
-                                 _ ->
-                                     ExitBySignal = R
-                             end
+    OTE = process_flag(trap_exit, true),
+    Ref = make_ref(),
+    Master = self(),
+    ExitBySignal = case Type of
+                       gc ->
+                           lists:duplicate(10000,
+                                           exit_by_signal);
+                       _ ->
+                           exit_by_signal
+                   end,
+    Pid = spawn_link(
+            fun () ->
+                    receive go -> ok end,
+                    false = have_pending_exit(),
+                    exit = fake_exit(From,
+                                     self(),
+                                     ExitBySignal),
+                    true = have_pending_exit(),
+                    Master ! {self(), Ref, Type},
+                    case Type of
+                        gc ->
+                            force_gc(),
+                            erlang:yield();
+                        unlink ->
+                            unlink(From);
+                        trap_exit ->
+                            process_flag(trap_exit, true);
+                        'receive' ->
+                            receive _ -> ok
+                            after 0 -> ok
+                            end;
+                        exit ->
+                            ok
+                    end,
+                    exit(exit_by_myself)
+            end),
+    Mon = erlang:monitor(process, Pid),
+    Pid ! go,
+    Reason = receive
+                 {'DOWN', Mon, process, Pid, R} ->
+                     receive
+                         {Pid, Ref, Type} ->
+                             ok
+                     after 0 ->
+                             ct:fail(premature_exit)
                      end,
-            receive
-                {'EXIT', Pid, R2} ->
-                    Reason = R2
-            end,
-            process_flag(trap_exit, OTE),
-            ok,
-            {comment, "Test only valid with current SMP emulator."};
-        _ ->
-            {skipped, "SMP support not enabled. Test only valid with current SMP emulator."}
-    end.
+                     case Type of
+                         exit ->
+                             exit_by_myself = R;
+                         _ ->
+                             ExitBySignal = R
+                     end
+             end,
+    receive
+        {'EXIT', Pid, R2} ->
+            Reason = R2
+    end,
+    process_flag(trap_exit, OTE),
+    ok,
+    {comment, "Test only valid with current SMP emulator."}.
 
 
 
diff --git a/erts/emulator/test/smoke_test_SUITE.erl b/erts/emulator/test/smoke_test_SUITE.erl
index 41bb07b84c..adc6f56c06 100644
--- a/erts/emulator/test/smoke_test_SUITE.erl
+++ b/erts/emulator/test/smoke_test_SUITE.erl
@@ -88,11 +88,9 @@ native_atomics(Config) when is_list(Config) ->
     {value,{NA32Key, NA32, _}} = lists:keysearch(NA32Key, 1, EthreadInfo),
     {value,{NA64Key, NA64, _}} = lists:keysearch(NA64Key, 1, EthreadInfo),
     {value,{DWNAKey, DWNA, _}} = lists:keysearch(DWNAKey, 1, EthreadInfo),
-    case {erlang:system_info(build_type), erlang:system_info(smp_support), NA32, NA64, DWNA} of
-	{opt, true, "no", "no", _} ->
+    case {erlang:system_info(build_type), NA32, NA64, DWNA} of
+	{opt, "no", "no", _} ->
 	    ct:fail(optimized_smp_runtime_without_native_atomics);
-	{_, false, "no", "no", _} ->
-	    {comment, "No native atomics"};
 	_ ->
 	    {comment,
 	     NA32 ++ " 32-bit, "
diff --git a/erts/emulator/test/statistics_SUITE.erl b/erts/emulator/test/statistics_SUITE.erl
index 7690557fda..6c01bfd45c 100644
--- a/erts/emulator/test/statistics_SUITE.erl
+++ b/erts/emulator/test/statistics_SUITE.erl
@@ -610,9 +610,7 @@ msacc(Config) ->
                         (aux, 0) ->
                              %% aux will be zero if we do not have smp support
                              %% or no async threads
-                             case erlang:system_info(smp_support) orelse
-                                  erlang:system_info(thread_pool_size) > 0
-                             of
+                             case erlang:system_info(thread_pool_size) > 0 of
                                  false ->
                                      ok;
                                  true ->
diff --git a/erts/emulator/test/system_profile_SUITE.erl b/erts/emulator/test/system_profile_SUITE.erl
index 9b678fcff9..c9be54f668 100644
--- a/erts/emulator/test/system_profile_SUITE.erl
+++ b/erts/emulator/test/system_profile_SUITE.erl
@@ -146,9 +146,8 @@ do_runnable_ports({TsType, TsTypeFlag}, Config) ->
 
 %% Tests system_profiling with scheduler.
 scheduler(Config) when is_list(Config) ->
-    case {erlang:system_info(smp_support), erlang:system_info(schedulers_online)} of
-	{false,_} -> {skipped, "No need for scheduler test when smp support is disabled."};
-	{_,    1} -> {skipped, "No need for scheduler test when only one scheduler online."};
+    case erlang:system_info(schedulers_online) of
+	1 -> {skipped, "No need for scheduler test when only one scheduler online."};
 	_ ->
 	    Nodes = 10,
 	    lists:foreach(fun (TsType) ->
diff --git a/lib/common_test/test_server/ts_install.erl b/lib/common_test/test_server/ts_install.erl
index c4e0223ac7..c5631fb9c3 100644
--- a/lib/common_test/test_server/ts_install.erl
+++ b/lib/common_test/test_server/ts_install.erl
@@ -408,17 +408,13 @@ off_heap_msgq() ->
     end.
 
 schedulers() ->
-    case catch erlang:system_info(smp_support) of
-	true ->
-	    case {erlang:system_info(schedulers),
-		  erlang:system_info(schedulers_online)} of
-		{S,S} ->
-		    "/S"++integer_to_list(S);
-		{S,O} ->
-		    "/S"++integer_to_list(S) ++ ":" ++
-			integer_to_list(O)
-	    end;
-	_ -> ""
+    case {erlang:system_info(schedulers),
+          erlang:system_info(schedulers_online)} of
+        {S,S} ->
+            "/S"++integer_to_list(S);
+        {S,O} ->
+            "/S"++integer_to_list(S) ++ ":" ++
+                integer_to_list(O)
     end.
 
 bind_type() ->
diff --git a/lib/common_test/test_server/ts_run.erl b/lib/common_test/test_server/ts_run.erl
index 82ae44ec06..ec4a54b249 100644
--- a/lib/common_test/test_server/ts_run.erl
+++ b/lib/common_test/test_server/ts_run.erl
@@ -204,11 +204,7 @@ make_command(Vars, Spec, State) ->
 		      _ ->
 			  ok
 		  end,
-		  "cerl -valgrind" ++
-		      case erlang:system_info(smp_support) of
-			  true -> " -smp";
-			  false -> ""
-		      end
+		  "cerl -valgrind"
 	  end,
     Naming =
 	case ts_lib:var(longnames, Vars) of
diff --git a/lib/kernel/test/gen_udp_SUITE.erl b/lib/kernel/test/gen_udp_SUITE.erl
index aa616d43d6..8364fe7cdc 100644
--- a/lib/kernel/test/gen_udp_SUITE.erl
+++ b/lib/kernel/test/gen_udp_SUITE.erl
@@ -295,21 +295,9 @@ bad_address(Config) when is_list(Config) ->
 %% are received per in/out scheduling, which should be
 %% the same as the read_packets parameter.
 %% 
-%% What happens on the SMP emulator remains to be seen...
-%%
 
 %% OTP-6249 UDP option for number of packet reads.
 read_packets(Config) when is_list(Config) ->
-    case erlang:system_info(smp_support) of
-	false ->
-	    read_packets_1();
-	true ->
-	    %% We would need some new sort of tracing to test this
-	    %% option reliably in an SMP emulator.
-	    {skip,"SMP emulator"}
-    end.
-
-read_packets_1() ->
     N1 = 5,
     N2 = 7,
     {ok,R} = gen_udp:open(0, [{read_packets,N1}]),
diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl
index 4b67fce9a8..a44ef106d3 100644
--- a/lib/kernel/test/zlib_SUITE.erl
+++ b/lib/kernel/test/zlib_SUITE.erl
@@ -885,29 +885,23 @@ split_bin(Last,Acc) ->
 
 %% Check concurrent access to zlib driver.
 smp(Config) ->
-    case erlang:system_info(smp_support) of
-	true ->
-	    NumOfProcs = lists:min([8,erlang:system_info(schedulers)]),
-	    io:format("smp starting ~p workers\n",[NumOfProcs]),
-
-	    %% Tests to run in parallel.
-	    Funcs = [zip_usage, gz_usage, compress_usage, dictionary_usage,
-		     crc, adler],
-
-	    %% We get all function arguments here to avoid repeated parallel
-	    %% file read access.
-	    FnAList = lists:map(fun(F) -> {F,?MODULE:F({get_arg,Config})}
-				end, Funcs),	    
-
-	    Pids = [spawn_link(?MODULE, worker, [rand:uniform(9999),
-						 list_to_tuple(FnAList),
-						 self()])
-		    || _ <- lists:seq(1,NumOfProcs)],
-	    wait_pids(Pids);
-
-	false ->
-	    {skipped,"No smp support"}
-    end.
+    NumOfProcs = lists:min([8,erlang:system_info(schedulers)]),
+    io:format("smp starting ~p workers\n",[NumOfProcs]),
+
+    %% Tests to run in parallel.
+    Funcs = [zip_usage, gz_usage, compress_usage, dictionary_usage,
+             crc, adler],
+
+    %% We get all function arguments here to avoid repeated parallel
+    %% file read access.
+    FnAList = lists:map(fun(F) -> {F,?MODULE:F({get_arg,Config})}
+                        end, Funcs),
+
+    Pids = [spawn_link(?MODULE, worker, [rand:uniform(9999),
+                                         list_to_tuple(FnAList),
+                                         self()])
+            || _ <- lists:seq(1,NumOfProcs)],
+    wait_pids(Pids).
 
 
 worker(Seed, FnATpl, Parent) ->
diff --git a/lib/runtime_tools/test/dbg_SUITE.erl b/lib/runtime_tools/test/dbg_SUITE.erl
index 4b0864858c..cfe8412e33 100644
--- a/lib/runtime_tools/test/dbg_SUITE.erl
+++ b/lib/runtime_tools/test/dbg_SUITE.erl
@@ -23,7 +23,7 @@
 -export([all/0, suite/0,
          big/1, tiny/1, simple/1, message/1, distributed/1, port/1,
 	 send/1, recv/1,
-         ip_port/1, file_port/1, file_port2/1, file_port_schedfix/1,
+         ip_port/1, file_port/1, file_port2/1,
          ip_port_busy/1, wrap_port/1, wrap_port_time/1,
          with_seq_trace/1, dead_suspend/1, local_trace/1,
          saved_patterns/1, tracer_exit_on_stop/1,
@@ -41,7 +41,7 @@ suite() ->
 all() -> 
     [big, tiny, simple, message, distributed, port, ip_port,
      send, recv,
-     file_port, file_port2, file_port_schedfix, ip_port_busy,
+     file_port, file_port2, ip_port_busy,
      wrap_port, wrap_port_time, with_seq_trace, dead_suspend,
      local_trace, saved_patterns, tracer_exit_on_stop,
      erl_tracer, distributed_erl_tracer].
@@ -623,99 +623,6 @@ file_port2(Config) when is_list(Config) ->
     end,
     ok.
 
-%% Test that the scheduling timestamp fix for trace flag 'running' works.
-file_port_schedfix(Config) when is_list(Config) ->
-    case (catch erlang:system_info(smp_support)) of
-        true ->
-            {skip, "No schedule fix on SMP"};
-        _ ->
-            try
-                file_port_schedfix1(Config)
-            after
-                dbg:stop()
-            end
-    end.
-file_port_schedfix1(Config) when is_list(Config) ->
-    stop(),
-    {A,B,C} = erlang:now(),
-    FTMP =  atom_to_list(?MODULE) ++ integer_to_list(A) ++
-    "-" ++ integer_to_list(B) ++ "-" ++ integer_to_list(C),
-    FName = filename:join([proplists:get_value(data_dir, Config), FTMP]),
-    %%
-    Port = dbg:trace_port(file, {FName, wrap, ".wraplog", 8*1024, 4}),
-    {ok, _} = dbg:tracer(port, Port),
-    {ok,[{matched,_node,0}]} = dbg:p(new,[running,procs,send,timestamp]),
-    %%
-    %% Generate the trace data
-    %%
-    %% This starts 3 processes that sends a message to each other in a ring,
-    %% 4 laps. Prior to sending the message to the next in the ring, each
-    %% process send 8 messages to itself, just to generate some trace data,
-    %% and to lower the possibility that the trace log wraps just after
-    %% a schedule out message (which would not burden any process and hence
-    %% not show up in the result)
-    %%
-    %% The wrap file trace is used because it burns a lot of time when the
-    %% driver swaps files, a lot more than the regular file trace. The test
-    %% case is dimensioned so that the log fills two files and just starts
-    %% on the third (out of four wrap files). This gives two file swaps,
-    %% and there are three processes, so one process will NOT be burdened.
-    %% The criterion for trace success is then that the max process
-    %% execution time must not be more than twice the min process
-    %% execution time. Wallclock. A normal result is about 10 times more
-    %% without schedule in - schedule out compensation (OTP-3938).
-    %%
-    ok = token_volleyball(3, 4, 8),
-    %%
-    {ok,[{matched,_,_}]} = dbg:p(all, [clear]),
-    stop(),
-    %%
-    %% Get the trace result
-    %%
-    Tag = make_ref(),
-    dbg:trace_client(file, {FName, wrap, ".wraplog"},
-                     {fun schedstat_handler/2, {self(), Tag, []}}),
-    Result =
-    receive
-        {Tag, D} ->
-            lists:map(
-              fun({Pid, {A1, B1, C1}}) ->
-                      {Pid, C1/1000000 + B1 + A1*1000000}
-              end,
-              D)
-    end,
-    ok = io:format("Result=~p", [Result]),
-    %    erlang:display({?MODULE, ?LINE, Result}),
-    %%
-    %% Analyze the result
-    %%
-    {Min, Max} = lists:foldl(fun({_Pid, M}, {Mi, Ma}) ->
-                                     {if M < Mi -> M; true -> Mi end,
-                                      if M > Ma -> M; true -> Ma end}
-                             end,
-                             {void, 0},
-                             Result),
-    % More PaN debug
-    io:format("Min = ~f, Max = ~f~n",[Min,Max]),
-    %%
-    %% Cleanup
-    %%
-    ToBeDeleted = filelib:wildcard(FName++"*"++".wraplog"),
-    lists:map(fun file:delete/1, ToBeDeleted),
-    %    io:format("ToBeDeleted=~p", [ToBeDeleted]),
-    %%
-    %% Present the result
-    %%
-    P = (Max / Min - 1) * 100,
-    BottomLine = lists:flatten(io_lib:format("~.2f %", [P])),
-    if P > 100 ->
-           Reason = {BottomLine, '>', "100%"},
-           erlang:display({file_port_schedfix, fail, Reason}),
-           ct:fail(Reason);
-       true ->
-           {comment, BottomLine}
-    end.
-
 %% Test tracing to wrapping file port
 wrap_port(Config) when is_list(Config) ->
     Self = self(),
diff --git a/lib/runtime_tools/test/dyntrace_SUITE.erl b/lib/runtime_tools/test/dyntrace_SUITE.erl
index 7be2f49a8b..7ffbe54446 100644
--- a/lib/runtime_tools/test/dyntrace_SUITE.erl
+++ b/lib/runtime_tools/test/dyntrace_SUITE.erl
@@ -51,11 +51,7 @@ init_per_suite(Config) ->
 	case erlang:system_info(debug_compiled) of
 	    false -> "";
 	    true -> ".debug"
-	end ++
-	case erlang:system_info(smp_support) of
-	    false -> "";
-	    true -> ".smp"
-	end,
+	end ++ ".smp",
     [{emu_name,N}|Config].
 
 end_per_suite(_Config) ->
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index 05451a83fb..5a5e282998 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -2283,13 +2283,8 @@ write_concurrency(Config) when is_list(Config) ->
     NoHashMem = ets:info(No7,memory),
     NoHashMem = ets:info(No8,memory),
 
-    case erlang:system_info(smp_support) of
-	true ->
-	    true = YesMem > NoHashMem,
-	    true = YesMem > NoTreeMem;
-	false ->
-	    true = YesMem =:= NoHashMem
-    end,
+    true = YesMem > NoHashMem,
+    true = YesMem > NoTreeMem,
 
     {'EXIT',{badarg,_}} = (catch ets_new(foo,[public,{write_concurrency,foo}])),
     {'EXIT',{badarg,_}} = (catch ets_new(foo,[public,{write_concurrency}])),
@@ -5912,16 +5907,11 @@ add_lists([E1|T1], [E2|T2], Acc) ->
 run_smp_workers(InitF,ExecF,FiniF,Laps) ->
     run_smp_workers(InitF,ExecF,FiniF,Laps, 0).
 run_smp_workers(InitF,ExecF,FiniF,Laps, Exclude) ->
-    case erlang:system_info(smp_support) of
-	true ->
-            case erlang:system_info(schedulers_online) of
-                N when N > Exclude ->
-                    run_workers_do(InitF,ExecF,FiniF,Laps, N - Exclude);
-                _ ->
-                    {skipped, "Too few schedulers online"}
-            end;
-	false ->
-	    {skipped,"No smp support"}
+    case erlang:system_info(schedulers_online) of
+        N when N > Exclude ->
+            run_workers_do(InitF,ExecF,FiniF,Laps, N - Exclude);
+        _ ->
+            {skipped, "Too few schedulers online"}
     end.
 
 run_sched_workers(InitF,ExecF,FiniF,Laps) ->
@@ -6231,11 +6221,9 @@ spawn_monitor_with_pid(Pid, Fun, N) ->
 only_if_smp(Func) ->
     only_if_smp(2, Func).
 only_if_smp(Schedulers, Func) ->
-    case {erlang:system_info(smp_support),
-	  erlang:system_info(schedulers_online)} of
-	{false,_} -> {skip,"No smp support"};
-	{true,N} when N < Schedulers -> {skip,"Too few schedulers online"};
-	{true,_} -> Func()
+    case erlang:system_info(schedulers_online) of
+	N when N < Schedulers -> {skip,"Too few schedulers online"};
+	_ -> Func()
     end.
 
 %% Copy-paste from emulator/test/binary_SUITE.erl