[PATCH] pi-futex: rt mutex tester

RT-mutex tester: scriptable tester for rt mutexes, which allows userspace
scripting of mutex unit-tests (and dynamic tests as well), using the actual
rt-mutex implementation of the kernel.

[akpm@osdl.org: fixlet]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 127 insertions, 0 deletions

diff --git a/scripts/rt-tester/t4-l2-pi-deboost.tst b/scripts/rt-tester/t4-l2-pi-deboost.tst
new file mode 100644
index 000000000000..01f1a80fa02a
--- /dev/null
+++ b/scripts/rt-tester/t4-l2-pi-deboost.tst
@@ -0,0 +1,127 @@
+#
+# 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
+
+#
+# 4 threads 2 lock PI
+#
+C: resetevent:          0:      0
+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
+W: locked:              0:      0
+
+# T1 lock L1
+C: locknowait:          1:      1
+W: locked:              1:      1
+
+# T3 lock L0
+C: lockintnowait:       3:      0
+W: blocked:             3:      0
+T: prioeq:              0:      83
+
+# T0 lock L1
+C: lock:                0:      1
+W: blocked:             0:      1
+T: prioeq:              1:      83
+
+# T1 unlock L1
+C: unlock:              1:      1
+
+# Wait until T0 is in the wakeup code
+W: blockedwake:         0:      1
+
+# Verify that T1 is unboosted
+W: unlocked:            1:      1
+T: priolt:              1:      1
+
+# T2 lock L1 (T0 is boosted and pending owner !)
+C: locknowait:          2:      1
+W: blocked:             2:      1
+T: prioeq:              0:      83
+
+# Interrupt T3 and wait until T3 returned
+C: signal:              3:      0
+W: unlocked:            3:      0
+
+# Verify prio of T0 (still pending owner,
+# but T2 is enqueued due to the previous boost by T3
+T: prioeq:              0:      82
+
+# Let T0 continue
+C: lockcont:            0:      1
+W: locked:              0:      1
+
+# Unlock L1 and let T2 get L1
+C: unlock:              0:      1
+W: locked:              2:      1
+
+# Verify that T0 is unboosted
+W: unlocked:            0:      1
+T: priolt:              0:      1
+
+# Unlock everything and exit
+C: unlock:              2:      1
+W: unlocked:            2:      1
+
+C: unlock:              0:      0
+W: unlocked:            0:      0
+