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Message-Id: <1457537342-678-7-git-send-email-emilio.lopez@collabora.co.uk>
Date: Wed, 9 Mar 2016 12:28:59 -0300
From: Emilio López <emilio.lopez@...labora.co.uk>
To: Shuah Khan <shuahkh@....samsung.com>
Cc: devel@...verdev.osuosl.org,
Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
Riley Andrews <riandrews@...roid.com>,
Daniel Vetter <daniel.vetter@...ll.ch>,
John Harrison <John.C.Harrison@...el.com>,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
Greg Hackmann <ghackmann@...gle.com>,
Rob Clark <robdclark@...il.com>,
linux-kselftest@...r.kernel.org,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Daniel Stone <daniels@...labora.com>,
Arve Hjønnevåg <arve@...roid.com>,
Emilio López <emilio.lopez@...labora.co.uk>
Subject: [RFC PATCH v1 6/9] selftest: sync: stress test for parallelism
This test is based on the libsync test suite from Android.
This commit includes a stress test that invokes operations
in parallel.
Signed-off-by: Emilio López <emilio.lopez@...labora.co.uk>
---
tools/testing/selftests/sync/Makefile | 1 +
.../selftests/sync/sync_stress_parallelism.c | 111 +++++++++++++++++++++
tools/testing/selftests/sync/sync_test.c | 1 +
tools/testing/selftests/sync/synctest.h | 3 +
4 files changed, 116 insertions(+)
create mode 100644 tools/testing/selftests/sync/sync_stress_parallelism.c
diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
index 4104d22..55739a4 100644
--- a/tools/testing/selftests/sync/Makefile
+++ b/tools/testing/selftests/sync/Makefile
@@ -16,6 +16,7 @@ TESTS += sync_fence.o
TESTS += sync_merge.o
TESTS += sync_wait.o
TESTS += sync_destroyed.o
+TESTS += sync_stress_parallelism.o
sync_test: $(SRC) $(TESTS)
diff --git a/tools/testing/selftests/sync/sync_stress_parallelism.c b/tools/testing/selftests/sync/sync_stress_parallelism.c
new file mode 100644
index 0000000..293794b
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_stress_parallelism.c
@@ -0,0 +1,111 @@
+/*
+ * sync stress test: parallelism
+ * Copyright 2015-2016 Collabora Ltd.
+ *
+ * Based on the implementation from the Android Open Source Project,
+ *
+ * Copyright 2012 Google, Inc
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <pthread.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+static struct {
+ int iterations;
+ int timeline;
+ int counter;
+} test_data_two_threads;
+
+static int test_stress_two_threads_shared_timeline_thread(void *d)
+{
+ int threadId = (long)d;
+ int timeline = test_data_two_threads.timeline;
+ int iterations = test_data_two_threads.iterations;
+ int fence, valid, ret, i;
+
+ for (i = 0; i < iterations; i++) {
+ fence = sw_sync_fence_create(timeline, "fence",
+ i * 2 + threadId);
+ valid = sw_sync_fence_is_valid(fence);
+ ASSERT(valid, "Failure allocating fence\n");
+
+ /* Wait on the prior thread to complete */
+ ret = sync_wait(fence, -1);
+ ASSERT(ret > 0, "Problem occurred on prior thread\n");
+
+ /*
+ * Confirm the previous thread's writes are visible
+ * and then increment
+ */
+ ASSERT(test_data_two_threads.counter == i * 2 + threadId,
+ "Counter got damaged!\n");
+ test_data_two_threads.counter++;
+
+ /* Kick off the other thread */
+ ret = sw_sync_timeline_inc(timeline, 1);
+ ASSERT(ret == 0, "Advancing timeline failed\n");
+
+ sw_sync_fence_destroy(fence);
+ }
+
+ return 0;
+}
+
+int test_stress_two_threads_shared_timeline(void)
+{
+ pthread_t a, b;
+ int valid;
+ int timeline = sw_sync_timeline_create();
+
+ valid = sw_sync_timeline_is_valid(timeline);
+ ASSERT(valid, "Failure allocating timeline\n");
+
+ test_data_two_threads.iterations = 1 << 16;
+ test_data_two_threads.counter = 0;
+ test_data_two_threads.timeline = timeline;
+
+ /*
+ * Use a single timeline to synchronize two threads
+ * hammmering on the same counter.
+ */
+
+ pthread_create(&a, NULL, (void *(*)(void *))
+ test_stress_two_threads_shared_timeline_thread,
+ (void *)0);
+ pthread_create(&b, NULL, (void *(*)(void *))
+ test_stress_two_threads_shared_timeline_thread,
+ (void *)1);
+
+ pthread_join(a, NULL);
+ pthread_join(b, NULL);
+
+ /* make sure the threads did not trample on one another */
+ ASSERT(test_data_two_threads.counter ==
+ test_data_two_threads.iterations * 2,
+ "Counter has unexpected value\n");
+
+ sw_sync_timeline_destroy(timeline);
+
+ return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
index 91f6b51..d4306ae 100644
--- a/tools/testing/selftests/sync/sync_test.c
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -67,6 +67,7 @@ int main(void)
err += RUN_TEST(test_fence_merge_same_fence);
err += RUN_TEST(test_fence_multi_timeline_wait);
err += RUN_TEST(test_fence_wait_on_destroyed_timeline);
+ err += RUN_TEST(test_stress_two_threads_shared_timeline);
if (err)
printf("[FAIL]\tsync errors: %d\n", err);
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
index bc8faae0..8c64504 100644
--- a/tools/testing/selftests/sync/synctest.h
+++ b/tools/testing/selftests/sync/synctest.h
@@ -57,4 +57,7 @@ int test_fence_multi_timeline_wait(void);
/* Fence test on destroyed timelines */
int test_fence_wait_on_destroyed_timeline(void);
+/* Stress test - parallelism */
+int test_stress_two_threads_shared_timeline(void);
+
#endif
--
2.5.0
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