[PATCH] rtmutex: Modify rtmutex-tester to test the setscheduler propagation

Make test suite setscheduler calls asynchronously.  Remove the waits in the
test cases and add a new testcase to verify the correctness of the
setscheduler priority propagation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 files changed, 202 insertions, 49 deletions

diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c
index fe211ba3a5b5..e82c2f848249 100644
--- a/kernel/rtmutex-tester.c
+++ b/kernel/rtmutex-tester.c
@@ -46,7 +46,7 @@ enum test_opcodes {
         RTTEST_LOCKINTNOWAIT,   /* 6 Lock interruptible no wait in wakeup, data = lockindex */
         RTTEST_LOCKCONT,        /* 7 Continue locking after the wakeup delay */
         RTTEST_UNLOCK,          /* 8 Unlock, data = lockindex */
-        RTTEST_LOCKBKL,         /* 9 Lock BKL */
+        RTTEST_LOCKBKL,         /* 9 Lock BKL */
         RTTEST_UNLOCKBKL,       /* 10 Unlock BKL */
         RTTEST_SIGNAL,          /* 11 Signal other test thread, data = thread id */
         RTTEST_RESETEVENT = 98, /* 98 Reset event counter */
@@ -55,7 +55,6 @@ enum test_opcodes {
 
 static int handle_op(struct test_thread_data *td, int lockwakeup)
 {
-        struct sched_param schedpar;
         int i, id, ret = -EINVAL;
 
         switch(td->opcode) {
@@ -63,17 +62,6 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
         case RTTEST_NOP:
                 return 0;
 
-        case RTTEST_SCHEDOT:
-                schedpar.sched_priority = 0;
-                ret = sched_setscheduler(current, SCHED_NORMAL, &schedpar);
-                if (!ret)
-                        set_user_nice(current, 0);
-                return ret;
-
-        case RTTEST_SCHEDRT:
-                schedpar.sched_priority = td->opdata;
-                return sched_setscheduler(current, SCHED_FIFO, &schedpar);
-
         case RTTEST_LOCKCONT:
                 td->mutexes[td->opdata] = 1;
                 td->event = atomic_add_return(1, &rttest_event);
@@ -310,9 +298,10 @@ static int test_func(void *data)
 static ssize_t sysfs_test_command(struct sys_device *dev, const char *buf,
                                   size_t count)
 {
+        struct sched_param schedpar;
         struct test_thread_data *td;
         char cmdbuf[32];
-        int op, dat, tid;
+        int op, dat, tid, ret;
 
         td = container_of(dev, struct test_thread_data, sysdev);
         tid = td->sysdev.id;
@@ -334,6 +323,21 @@ static ssize_t sysfs_test_command(struct sys_device *dev, const char *buf,
                 return -EINVAL;
 
         switch (op) {
+        case RTTEST_SCHEDOT:
+                schedpar.sched_priority = 0;
+                ret = sched_setscheduler(threads[tid], SCHED_NORMAL, &schedpar);
+                if (ret)
+                        return ret;
+                set_user_nice(current, 0);
+                break;
+
+        case RTTEST_SCHEDRT:
+                schedpar.sched_priority = dat;
+                ret = sched_setscheduler(threads[tid], SCHED_FIFO, &schedpar);
+                if (ret)
+                        return ret;
+                break;
+
         case RTTEST_SIGNAL:
                 send_sig(SIGHUP, threads[tid], 0);
                 break;
diff --git a/scripts/rt-tester/check-all.sh b/scripts/rt-tester/check-all.sh
index ac45c3e65a35..43098afe7431 100644
--- a/scripts/rt-tester/check-all.sh
+++ b/scripts/rt-tester/check-all.sh
@@ -18,4 +18,5 @@ testit t3-l1-pi-steal.tst
 testit t3-l2-pi.tst
 testit t4-l2-pi-deboost.tst
 testit t5-l4-pi-boost-deboost.tst
+testit t5-l4-pi-boost-deboost-setsched.tst
 
diff --git a/scripts/rt-tester/t2-l1-2rt-sameprio.tst b/scripts/rt-tester/t2-l1-2rt-sameprio.tst
index a2b6f2aae755..8821f27cc8be 100644
--- a/scripts/rt-tester/t2-l1-2rt-sameprio.tst
+++ b/scripts/rt-tester/t2-l1-2rt-sameprio.tst
@@ -57,9 +57,7 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedfifo:           0:      80
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      80
-W: opcodeeq:            1:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t2-l1-pi.tst b/scripts/rt-tester/t2-l1-pi.tst
index aa4c8940acd6..cde1f189a02b 100644
--- a/scripts/rt-tester/t2-l1-pi.tst
+++ b/scripts/rt-tester/t2-l1-pi.tst
@@ -57,9 +57,7 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      80
-W: opcodeeq:            1:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t2-l1-signal.tst b/scripts/rt-tester/t2-l1-signal.tst
index c47ba06af209..3ab0bfc49950 100644
--- a/scripts/rt-tester/t2-l1-signal.tst
+++ b/scripts/rt-tester/t2-l1-signal.tst
@@ -57,9 +57,7 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedother:          1:      0
-W: opcodeeq:            1:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t2-l2-2rt-deadlock.tst b/scripts/rt-tester/t2-l2-2rt-deadlock.tst
index 0cee476b206e..f4b5d5d6215f 100644
--- a/scripts/rt-tester/t2-l2-2rt-deadlock.tst
+++ b/scripts/rt-tester/t2-l2-2rt-deadlock.tst
@@ -57,9 +57,7 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedfifo:           0:      80
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      80
-W: opcodeeq:            1:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t3-l1-pi-1rt.tst b/scripts/rt-tester/t3-l1-pi-1rt.tst
index a5eaf7ed5d54..63440ca2cce9 100644
--- a/scripts/rt-tester/t3-l1-pi-1rt.tst
+++ b/scripts/rt-tester/t3-l1-pi-1rt.tst
@@ -57,11 +57,8 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedother:          1:      0
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      82
-W: opcodeeq:            2:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t3-l1-pi-2rt.tst b/scripts/rt-tester/t3-l1-pi-2rt.tst
index c622391a8afe..e5816fe67df3 100644
--- a/scripts/rt-tester/t3-l1-pi-2rt.tst
+++ b/scripts/rt-tester/t3-l1-pi-2rt.tst
@@ -57,11 +57,8 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      81
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      82
-W: opcodeeq:            2:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t3-l1-pi-3rt.tst b/scripts/rt-tester/t3-l1-pi-3rt.tst
index b5057fb13e09..718b82b5d3bb 100644
--- a/scripts/rt-tester/t3-l1-pi-3rt.tst
+++ b/scripts/rt-tester/t3-l1-pi-3rt.tst
@@ -57,11 +57,8 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedfifo:           0:      80
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      81
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      82
-W: opcodeeq:            2:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t3-l1-pi-signal.tst b/scripts/rt-tester/t3-l1-pi-signal.tst
index 3e427daa33ff..c6e213563498 100644
--- a/scripts/rt-tester/t3-l1-pi-signal.tst
+++ b/scripts/rt-tester/t3-l1-pi-signal.tst
@@ -55,11 +55,8 @@ W: opcodeeq:		0: 	0
 
 # Set priorities
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      80
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      81
-W: opcodeeq:            2:      0
 
 # T0 lock L0
 C: lock:                0:      0
diff --git a/scripts/rt-tester/t3-l1-pi-steal.tst b/scripts/rt-tester/t3-l1-pi-steal.tst
index 72c24a9e4be4..f53749d59d79 100644
--- a/scripts/rt-tester/t3-l1-pi-steal.tst
+++ b/scripts/rt-tester/t3-l1-pi-steal.tst
@@ -57,11 +57,8 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      80
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      81
-W: opcodeeq:            2:      0
 
 # T0 lock L0
 C: lock:                0:      0
diff --git a/scripts/rt-tester/t3-l2-pi.tst b/scripts/rt-tester/t3-l2-pi.tst
index 2ba0dced48fa..cdc3e4fd7bac 100644
--- a/scripts/rt-tester/t3-l2-pi.tst
+++ b/scripts/rt-tester/t3-l2-pi.tst
@@ -57,11 +57,8 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedother:          1:      0
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      82
-W: opcodeeq:            2:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t4-l2-pi-deboost.tst b/scripts/rt-tester/t4-l2-pi-deboost.tst
index 01f1a80fa02a..baa14137f473 100644
--- a/scripts/rt-tester/t4-l2-pi-deboost.tst
+++ b/scripts/rt-tester/t4-l2-pi-deboost.tst
@@ -57,13 +57,9 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedother:          1:      0
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      82
-W: opcodeeq:            2:      0
 C: schedfifo:           3:      83
-W: opcodeeq:            3:      0
 
 # T0 lock L0
 C: locknowait:          0:      0
diff --git a/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst b/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
new file mode 100644
index 000000000000..e6ec0c81b54d
--- /dev/null
+++ b/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
@@ -0,0 +1,183 @@
+#
+# rt-mutex test
+#
+# Op: C(ommand)/T(est)/W(ait)
+# |  opcode
+# |  |     threadid: 0-7
+# |  |     |  opcode argument
+# |  |     |  |
+# C: lock: 0: 0
+#
+# Commands
+#
+# opcode        opcode argument
+# schedother    nice value
+# schedfifo     priority
+# lock          lock nr (0-7)
+# locknowait    lock nr (0-7)
+# lockint       lock nr (0-7)
+# lockintnowait lock nr (0-7)
+# lockcont      lock nr (0-7)
+# unlock        lock nr (0-7)
+# lockbkl       lock nr (0-7)
+# unlockbkl     lock nr (0-7)
+# signal        thread to signal (0-7)
+# reset         0
+# resetevent    0
+#
+# Tests / Wait
+#
+# opcode        opcode argument
+#
+# prioeq        priority
+# priolt        priority
+# priogt        priority
+# nprioeq       normal priority
+# npriolt       normal priority
+# npriogt       normal priority
+# locked        lock nr (0-7)
+# blocked       lock nr (0-7)
+# blockedwake   lock nr (0-7)
+# unlocked      lock nr (0-7)
+# lockedbkl     dont care
+# blockedbkl    dont care
+# unlockedbkl   dont care
+# opcodeeq      command opcode or number
+# opcodelt      number
+# opcodegt      number
+# eventeq       number
+# eventgt       number
+# eventlt       number
+
+#
+# 5 threads 4 lock PI - modify priority of blocked threads
+#
+C: resetevent:          0:      0
+W: opcodeeq:            0:      0
+
+# Set schedulers
+C: schedother:          0:      0
+C: schedfifo:           1:      81
+C: schedfifo:           2:      82
+C: schedfifo:           3:      83
+C: schedfifo:           4:      84
+
+# T0 lock L0
+C: locknowait:          0:      0
+W: locked:              0:      0
+
+# T1 lock L1
+C: locknowait:          1:      1
+W: locked:              1:      1
+
+# T1 lock L0
+C: lockintnowait:       1:      0
+W: blocked:             1:      0
+T: prioeq:              0:      81
+
+# T2 lock L2
+C: locknowait:          2:      2
+W: locked:              2:      2
+
+# T2 lock L1
+C: lockintnowait:       2:      1
+W: blocked:             2:      1
+T: prioeq:              0:      82
+T: prioeq:              1:      82
+
+# T3 lock L3
+C: locknowait:          3:      3
+W: locked:              3:      3
+
+# T3 lock L2
+C: lockintnowait:       3:      2
+W: blocked:             3:      2
+T: prioeq:              0:      83
+T: prioeq:              1:      83
+T: prioeq:              2:      83
+
+# T4 lock L3
+C: lockintnowait:       4:      3
+W: blocked:             4:      3
+T: prioeq:              0:      84
+T: prioeq:              1:      84
+T: prioeq:              2:      84
+T: prioeq:              3:      84
+
+# Reduce prio of T4
+C: schedfifo:           4:      80
+T: prioeq:              0:      83
+T: prioeq:              1:      83
+T: prioeq:              2:      83
+T: prioeq:              3:      83
+T: prioeq:              4:      80
+
+# Increase prio of T4
+C: schedfifo:           4:      84
+T: prioeq:              0:      84
+T: prioeq:              1:      84
+T: prioeq:              2:      84
+T: prioeq:              3:      84
+T: prioeq:              4:      84
+
+# Reduce prio of T3
+C: schedfifo:           3:      80
+T: prioeq:              0:      84
+T: prioeq:              1:      84
+T: prioeq:              2:      84
+T: prioeq:              3:      84
+T: prioeq:              4:      84
+
+# Increase prio of T3
+C: schedfifo:           3:      85
+T: prioeq:              0:      85
+T: prioeq:              1:      85
+T: prioeq:              2:      85
+T: prioeq:              3:      85
+T: prioeq:              4:      84
+
+# Reduce prio of T3
+C: schedfifo:           3:      83
+T: prioeq:              0:      84
+T: prioeq:              1:      84
+T: prioeq:              2:      84
+T: prioeq:              3:      84
+T: prioeq:              4:      84
+
+# Signal T4
+C: signal:              4:      0
+W: unlocked:            4:      3
+T: prioeq:              0:      83
+T: prioeq:              1:      83
+T: prioeq:              2:      83
+T: prioeq:              3:      83
+
+# Signal T3
+C: signal:              3:      0
+W: unlocked:            3:      2
+T: prioeq:              0:      82
+T: prioeq:              1:      82
+T: prioeq:              2:      82
+
+# Signal T2
+C: signal:              2:      0
+W: unlocked:            2:      1
+T: prioeq:              0:      81
+T: prioeq:              1:      81
+
+# Signal T1
+C: signal:              1:      0
+W: unlocked:            1:      0
+T: priolt:              0:      1
+
+# Unlock and exit
+C: unlock:              3:      3
+C: unlock:              2:      2
+C: unlock:              1:      1
+C: unlock:              0:      0
+
+W: unlocked:            3:      3
+W: unlocked:            2:      2
+W: unlocked:            1:      1
+W: unlocked:            0:      0
+
diff --git a/scripts/rt-tester/t5-l4-pi-boost-deboost.tst b/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
index efa0788c1189..ca64f8bbf4bc 100644
--- a/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
+++ b/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
@@ -57,15 +57,10 @@ W: opcodeeq:		0: 	0
 
 # Set schedulers
 C: schedother:          0:      0
-W: opcodeeq:            0:      0
 C: schedfifo:           1:      81
-W: opcodeeq:            1:      0
 C: schedfifo:           2:      82
-W: opcodeeq:            2:      0
 C: schedfifo:           3:      83
-W: opcodeeq:            3:      0
 C: schedfifo:           4:      84
-W: opcodeeq:            4:      0
 
 # T0 lock L0
 C: locknowait:          0:      0