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Message-ID: <Pine.LNX.4.64.0607230217170.11861@localhost.localdomain>
Date: Sun, 23 Jul 2006 02:18:27 +0100 (BST)
From: Esben Nielsen <nielsen.esben@...glemail.com>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
Steven Rostedt <rostedt@...dmis.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [patch 2/3] [-rt] Fixes the timeout-bug in the rtmutex/PI-futex.
This is based on and almost identical to the one Thomas Gleixner sent out
earlier. His description was:
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
kernel/rtmutex-tester.c | 31 +--
scripts/rt-tester/check-all.sh | 2
scripts/rt-tester/reset-tester.py | 18 +
scripts/rt-tester/t2-l1-signal.tst | 3
scripts/rt-tester/t3-l1-pi-signal.tst | 3
scripts/rt-tester/t4-l2-pi-deboost.tst | 2
scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst | 182 ++++++++++++++++++
scripts/rt-tester/t5-l4-pi-boost-deboost.tst | 2
8 files changed, 228 insertions(+), 15 deletions(-)
Index: linux-2.6.17-rt7/kernel/rtmutex-tester.c
===================================================================
--- linux-2.6.17-rt7.orig/kernel/rtmutex-tester.c
+++ linux-2.6.17-rt7/kernel/rtmutex-tester.c
@@ -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_
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 +323,22 @@ static ssize_t sysfs_test_command(struct
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;
Index: linux-2.6.17-rt7/scripts/rt-tester/reset-tester.py
===================================================================
--- /dev/null
+++ linux-2.6.17-rt7/scripts/rt-tester/reset-tester.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+
+sysfsprefix = "/sys/devices/system/rttest/rttest"
+statusfile = "/status"
+commandfile = "/command"
+
+for i in range(0,8):
+ cmdstr = "%s:%s" %("99", "0")
+ fname = "%s%d%s" %(sysfsprefix, i, commandfile)
+
+ try:
+ fcmd = open(fname, 'w')
+ fcmd.write(cmdstr)
+ fcmd.close()
+ except Exception,ex:
+ print i
+ print ex
+
Index: linux-2.6.17-rt7/scripts/rt-tester/t2-l1-signal.tst
===================================================================
--- linux-2.6.17-rt7.orig/scripts/rt-tester/t2-l1-signal.tst
+++ linux-2.6.17-rt7/scripts/rt-tester/t2-l1-signal.tst
@@ -77,3 +77,6 @@ T: opcodeeq: 1: -4
# Unlock and exit
C: unlock: 0: 0
W: unlocked: 0: 0
+
+# Reset the -4 opcode from the signal
+C: reset: 1: 0
\ No newline at end of file
Index: linux-2.6.17-rt7/scripts/rt-tester/t3-l1-pi-signal.tst
===================================================================
--- linux-2.6.17-rt7.orig/scripts/rt-tester/t3-l1-pi-signal.tst
+++ linux-2.6.17-rt7/scripts/rt-tester/t3-l1-pi-signal.tst
@@ -98,4 +98,5 @@ C: unlock: 1: 0
W: unlocked: 1: 0
-
+# Reset the -4 opcode from the signal
+C: reset: 2: 0
\ No newline at end of file
Index: linux-2.6.17-rt7/scripts/rt-tester/t4-l2-pi-deboost.tst
===================================================================
--- linux-2.6.17-rt7.orig/scripts/rt-tester/t4-l2-pi-deboost.tst
+++ linux-2.6.17-rt7/scripts/rt-tester/t4-l2-pi-deboost.tst
@@ -125,3 +125,5 @@ W: unlocked: 2: 1
C: unlock: 0: 0
W: unlocked: 0: 0
+# Reset the -4 opcode from the signal
+C: reset: 3: 0
\ No newline at end of file
Index: linux-2.6.17-rt7/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
===================================================================
--- /dev/null
+++ linux-2.6.17-rt7/scripts/rt-tester/t5-l4-pi-boost-deboost-setsched.tst
@@ -0,0 +1,182 @@
+#
+# 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
Index: linux-2.6.17-rt7/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
===================================================================
--- linux-2.6.17-rt7.orig/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
+++ linux-2.6.17-rt7/scripts/rt-tester/t5-l4-pi-boost-deboost.tst
@@ -146,3 +146,5 @@ W: unlocked: 2: 2
W: unlocked: 1: 1
W: unlocked: 0: 0
+# Reset the -4 opcode from the signal
+C: reset: 4: 0
\ No newline at end of file
Index: linux-2.6.17-rt7/scripts/rt-tester/check-all.sh
===================================================================
--- linux-2.6.17-rt7.orig/scripts/rt-tester/check-all.sh
+++ linux-2.6.17-rt7/scripts/rt-tester/check-all.sh
@@ -18,4 +18,4 @@ 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
\ No newline at end of file
--
-
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