liblockdep: Add pthread_mutex_t test suite

This is a rather simple and basic test suite to test common
locking issues.

Beyond tests, it also shows how to use the library.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/1371163284-6346-5-git-send-email-sasha.levin@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/tools/lib/lockdep/run_tests.sh b/tools/lib/lockdep/run_tests.sh
new file mode 100644 (file)
index 0000000..5334ad9
--- /dev/null
+++ b/tools/lib/lockdep/run_tests.sh
@@ -0,0 +1,27 @@
+#! /bin/bash
+
+make &> /dev/null
+
+for i in `ls tests/*.c`; do
+       testname=$(basename -s .c "$i")
+       gcc -o tests/$testname -pthread -lpthread $i liblockdep.a -Iinclude -D__USE_LIBLOCKDEP &> /dev/null
+       echo -ne "$testname... "
+       if [ $(timeout 1 ./tests/$testname | wc -l) -gt 0 ]; then
+               echo "PASSED!"
+       else
+               echo "FAILED!"
+       fi
+       rm tests/$testname
+done
+
+for i in `ls tests/*.c`; do
+       testname=$(basename -s .c "$i")
+       gcc -o tests/$testname -pthread -lpthread -Iinclude $i &> /dev/null
+       echo -ne "(PRELOAD) $testname... "
+       if [ $(timeout 1 ./lockdep ./tests/$testname | wc -l) -gt 0 ]; then
+               echo "PASSED!"
+       else
+               echo "FAILED!"
+       fi
+       rm tests/$testname
+done

diff --git a/tools/lib/lockdep/tests/AA.c b/tools/lib/lockdep/tests/AA.c
new file mode 100644 (file)
index 0000000..0f782ff
--- /dev/null
+++ b/tools/lib/lockdep/tests/AA.c
@@ -0,0 +1,13 @@
+#include <liblockdep/mutex.h>
+
+void main(void)
+{
+       pthread_mutex_t a, b;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+
+       pthread_mutex_lock(&a);
+       pthread_mutex_lock(&b);
+       pthread_mutex_lock(&a);
+}

diff --git a/tools/lib/lockdep/tests/ABBA.c b/tools/lib/lockdep/tests/ABBA.c
new file mode 100644 (file)
index 0000000..07f0e29
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBA.c
@@ -0,0 +1,13 @@
+#include <liblockdep/mutex.h>
+#include "common.h"
+
+void main(void)
+{
+       pthread_mutex_t a, b;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+
+       LOCK_UNLOCK_2(a, b);
+       LOCK_UNLOCK_2(b, a);
+}

diff --git a/tools/lib/lockdep/tests/ABBCCA.c b/tools/lib/lockdep/tests/ABBCCA.c
new file mode 100644 (file)
index 0000000..843db09
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBCCA.c
@@ -0,0 +1,15 @@
+#include <liblockdep/mutex.h>
+#include "common.h"
+
+void main(void)
+{
+       pthread_mutex_t a, b, c;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+       pthread_mutex_init(&c, NULL);
+
+       LOCK_UNLOCK_2(a, b);
+       LOCK_UNLOCK_2(b, c);
+       LOCK_UNLOCK_2(c, a);
+}

diff --git a/tools/lib/lockdep/tests/ABBCCDDA.c b/tools/lib/lockdep/tests/ABBCCDDA.c
new file mode 100644 (file)
index 0000000..33620e2
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBCCDDA.c
@@ -0,0 +1,17 @@
+#include <liblockdep/mutex.h>
+#include "common.h"
+
+void main(void)
+{
+       pthread_mutex_t a, b, c, d;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+       pthread_mutex_init(&c, NULL);
+       pthread_mutex_init(&d, NULL);
+
+       LOCK_UNLOCK_2(a, b);
+       LOCK_UNLOCK_2(b, c);
+       LOCK_UNLOCK_2(c, d);
+       LOCK_UNLOCK_2(d, a);
+}

diff --git a/tools/lib/lockdep/tests/ABCABC.c b/tools/lib/lockdep/tests/ABCABC.c
new file mode 100644 (file)
index 0000000..3fee51e
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABCABC.c
@@ -0,0 +1,15 @@
+#include <liblockdep/mutex.h>
+#include "common.h"
+
+void main(void)
+{
+       pthread_mutex_t a, b, c;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+       pthread_mutex_init(&c, NULL);
+
+       LOCK_UNLOCK_2(a, b);
+       LOCK_UNLOCK_2(c, a);
+       LOCK_UNLOCK_2(b, c);
+}

diff --git a/tools/lib/lockdep/tests/ABCDBCDA.c b/tools/lib/lockdep/tests/ABCDBCDA.c
new file mode 100644 (file)
index 0000000..427ba56
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABCDBCDA.c
@@ -0,0 +1,17 @@
+#include <liblockdep/mutex.h>
+#include "common.h"
+
+void main(void)
+{
+       pthread_mutex_t a, b, c, d;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+       pthread_mutex_init(&c, NULL);
+       pthread_mutex_init(&d, NULL);
+
+       LOCK_UNLOCK_2(a, b);
+       LOCK_UNLOCK_2(c, d);
+       LOCK_UNLOCK_2(b, c);
+       LOCK_UNLOCK_2(d, a);
+}

diff --git a/tools/lib/lockdep/tests/ABCDBDDA.c b/tools/lib/lockdep/tests/ABCDBDDA.c
new file mode 100644 (file)
index 0000000..680c6cf
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABCDBDDA.c
@@ -0,0 +1,17 @@
+#include <liblockdep/mutex.h>
+#include "common.h"
+
+void main(void)
+{
+       pthread_mutex_t a, b, c, d;
+
+       pthread_mutex_init(&a, NULL);
+       pthread_mutex_init(&b, NULL);
+       pthread_mutex_init(&c, NULL);
+       pthread_mutex_init(&d, NULL);
+
+       LOCK_UNLOCK_2(a, b);
+       LOCK_UNLOCK_2(c, d);
+       LOCK_UNLOCK_2(b, d);
+       LOCK_UNLOCK_2(d, a);
+}

diff --git a/tools/lib/lockdep/tests/common.h b/tools/lib/lockdep/tests/common.h
new file mode 100644 (file)
index 0000000..d89e94d
--- /dev/null
+++ b/tools/lib/lockdep/tests/common.h
@@ -0,0 +1,12 @@
+#ifndef _LIBLOCKDEP_TEST_COMMON_H
+#define _LIBLOCKDEP_TEST_COMMON_H
+
+#define LOCK_UNLOCK_2(a, b)                    \
+       do {                                    \
+               pthread_mutex_lock(&(a));       \
+               pthread_mutex_lock(&(b));       \
+               pthread_mutex_unlock(&(b));     \
+               pthread_mutex_unlock(&(a));     \
+       } while(0)
+
+#endif

diff --git a/tools/lib/lockdep/tests/unlock_balance.c b/tools/lib/lockdep/tests/unlock_balance.c
new file mode 100644 (file)
index 0000000..0bc62de
--- /dev/null
+++ b/tools/lib/lockdep/tests/unlock_balance.c
@@ -0,0 +1,12 @@
+#include <liblockdep/mutex.h>
+
+void main(void)
+{
+       pthread_mutex_t a;
+
+       pthread_mutex_init(&a, NULL);
+
+       pthread_mutex_lock(&a);
+       pthread_mutex_unlock(&a);
+       pthread_mutex_unlock(&a);
+}