selftest: sync: basic tests for sw_sync framework

These tests are based on the libsync test suite from Android.
This commit lays the ground for future tests, as well as includes
tests for a variety of basic allocation commands.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

9 files changed, 519 insertions, 0 deletions

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index f770dba2a6f6..69cf1a68e4d3 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -23,6 +23,7 @@ TARGETS += seccomp
 TARGETS += sigaltstack
 TARGETS += size
 TARGETS += static_keys
+TARGETS += sync
 TARGETS += sysctl
 ifneq (1, $(quicktest))
 TARGETS += timers
diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
new file mode 100644
index 000000000000..f5091e7792f2
--- /dev/null
+++ b/tools/testing/selftests/sync/.gitignore
@@ -0,0 +1 @@
+sync_test
diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
new file mode 100644
index 000000000000..620a59ae2dab
--- /dev/null
+++ b/tools/testing/selftests/sync/Makefile
@@ -0,0 +1,18 @@
+CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
+CFLAGS += -I../../../../usr/include/
+LDFLAGS += -pthread
+
+TEST_PROGS = sync_test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+OBJS = sync_test.o sync.o
+
+TESTS += sync_alloc.o
+
+sync_test: $(OBJS) $(TESTS)
+
+clean:
+        $(RM) sync_test $(OBJS) $(TESTS)
diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
new file mode 100644
index 000000000000..e2cfc6bad83e
--- /dev/null
+++ b/tools/testing/selftests/sync/sw_sync.h
@@ -0,0 +1,46 @@
+/*
+ *  sw_sync abstraction
+ *
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2013 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.
+ */
+
+#ifndef SELFTESTS_SW_SYNC_H
+#define SELFTESTS_SW_SYNC_H
+
+/*
+ * sw_sync is mainly intended for testing and should not be compiled into
+ * production kernels
+ */
+
+int sw_sync_timeline_create(void);
+int sw_sync_timeline_is_valid(int fd);
+int sw_sync_timeline_inc(int fd, unsigned int count);
+void sw_sync_timeline_destroy(int fd);
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value);
+int sw_sync_fence_is_valid(int fd);
+void sw_sync_fence_destroy(int fd);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
new file mode 100644
index 000000000000..f3d599f249b9
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.c
@@ -0,0 +1,221 @@
+/*
+ *  sync / sw_sync abstraction
+ *  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 <fcntl.h>
+#include <malloc.h>
+#include <poll.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+
+#include <linux/sync_file.h>
+
+
+/* SW_SYNC ioctls */
+struct sw_sync_create_fence_data {
+        __u32   value;
+        char    name[32];
+        __s32   fence;
+};
+
+#define SW_SYNC_IOC_MAGIC               'W'
+#define SW_SYNC_IOC_CREATE_FENCE        _IOWR(SW_SYNC_IOC_MAGIC, 0,\
+                                              struct sw_sync_create_fence_data)
+#define SW_SYNC_IOC_INC                 _IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
+
+
+int sync_wait(int fd, int timeout)
+{
+        struct pollfd fds;
+
+        fds.fd = fd;
+        fds.events = POLLIN | POLLERR;
+
+        return poll(&fds, 1, timeout);
+}
+
+int sync_merge(const char *name, int fd1, int fd2)
+{
+        struct sync_merge_data data = {};
+        int err;
+
+        data.fd2 = fd2;
+        strncpy(data.name, name, sizeof(data.name) - 1);
+        data.name[sizeof(data.name) - 1] = '\0';
+
+        err = ioctl(fd1, SYNC_IOC_MERGE, &data);
+        if (err < 0)
+                return err;
+
+        return data.fence;
+}
+
+static struct sync_file_info *sync_file_info(int fd)
+{
+        struct sync_file_info *info;
+        struct sync_fence_info *fence_info;
+        int err, num_fences;
+
+        info = calloc(1, sizeof(*info));
+        if (info == NULL)
+                return NULL;
+
+        err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+        if (err < 0) {
+                free(info);
+                return NULL;
+        }
+
+        num_fences = info->num_fences;
+
+        if (num_fences) {
+                info->flags = 0;
+                info->num_fences = num_fences;
+
+                fence_info = calloc(num_fences, sizeof(*fence_info));
+                if (!fence_info) {
+                        free(info);
+                        return NULL;
+                }
+
+                info->sync_fence_info = (uint64_t)fence_info;
+
+                err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+                if (err < 0) {
+                        free(fence_info);
+                        free(info);
+                        return NULL;
+                }
+        }
+
+        return info;
+}
+
+static void sync_file_info_free(struct sync_file_info *info)
+{
+        free((void *)info->sync_fence_info);
+        free(info);
+}
+
+int sync_fence_size(int fd)
+{
+        int count;
+        struct sync_file_info *info = sync_file_info(fd);
+
+        if (!info)
+                return 0;
+
+        count = info->num_fences;
+
+        sync_file_info_free(info);
+
+        return count;
+}
+
+int sync_fence_count_with_status(int fd, int status)
+{
+        unsigned int i, count = 0;
+        struct sync_fence_info *fence_info = NULL;
+        struct sync_file_info *info = sync_file_info(fd);
+
+        if (!info)
+                return -1;
+
+        fence_info = (struct sync_fence_info *)info->sync_fence_info;
+        for (i = 0 ; i < info->num_fences ; i++) {
+                if (fence_info[i].status == status)
+                        count++;
+        }
+
+        sync_file_info_free(info);
+
+        return count;
+}
+
+int sw_sync_timeline_create(void)
+{
+        return open("/sys/kernel/debug/sync/sw_sync", O_RDWR);
+}
+
+int sw_sync_timeline_inc(int fd, unsigned int count)
+{
+        __u32 arg = count;
+
+        return ioctl(fd, SW_SYNC_IOC_INC, &arg);
+}
+
+int sw_sync_timeline_is_valid(int fd)
+{
+        int status;
+
+        if (fd == -1)
+                return 0;
+
+        status = fcntl(fd, F_GETFD, 0);
+        return (status >= 0);
+}
+
+void sw_sync_timeline_destroy(int fd)
+{
+        if (sw_sync_timeline_is_valid(fd))
+                close(fd);
+}
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value)
+{
+        struct sw_sync_create_fence_data data = {};
+        int err;
+
+        data.value = value;
+        strncpy(data.name, name, sizeof(data.name) - 1);
+        data.name[sizeof(data.name) - 1] = '\0';
+
+        err = ioctl(fd, SW_SYNC_IOC_CREATE_FENCE, &data);
+        if (err < 0)
+                return err;
+
+        return data.fence;
+}
+
+int sw_sync_fence_is_valid(int fd)
+{
+        /* Same code! */
+        return sw_sync_timeline_is_valid(fd);
+}
+
+void sw_sync_fence_destroy(int fd)
+{
+        if (sw_sync_fence_is_valid(fd))
+                close(fd);
+}
diff --git a/tools/testing/selftests/sync/sync.h b/tools/testing/selftests/sync/sync.h
new file mode 100644
index 000000000000..fb7156148350
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.h
@@ -0,0 +1,40 @@
+/*
+ *  sync abstraction
+ *  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.
+ */
+
+#ifndef SELFTESTS_SYNC_H
+#define SELFTESTS_SYNC_H
+
+#define FENCE_STATUS_ERROR      (-1)
+#define FENCE_STATUS_ACTIVE     (0)
+#define FENCE_STATUS_SIGNALED   (1)
+
+int sync_wait(int fd, int timeout);
+int sync_merge(const char *name, int fd1, int fd2);
+int sync_fence_size(int fd);
+int sync_fence_count_with_status(int fd, int status);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync_alloc.c b/tools/testing/selftests/sync/sync_alloc.c
new file mode 100644
index 000000000000..66a28afc05dc
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_alloc.c
@@ -0,0 +1,74 @@
+/*
+ *  sync allocation tests
+ *  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 "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_alloc_timeline(void)
+{
+        int timeline, valid;
+
+        timeline = sw_sync_timeline_create();
+        valid = sw_sync_timeline_is_valid(timeline);
+        ASSERT(valid, "Failure allocating timeline\n");
+
+        sw_sync_timeline_destroy(timeline);
+        return 0;
+}
+
+int test_alloc_fence(void)
+{
+        int timeline, fence, valid;
+
+        timeline = sw_sync_timeline_create();
+        valid = sw_sync_timeline_is_valid(timeline);
+        ASSERT(valid, "Failure allocating timeline\n");
+
+        fence = sw_sync_fence_create(timeline, "allocFence", 1);
+        valid = sw_sync_fence_is_valid(fence);
+        ASSERT(valid, "Failure allocating fence\n");
+
+        sw_sync_fence_destroy(fence);
+        sw_sync_timeline_destroy(timeline);
+        return 0;
+}
+
+int test_alloc_fence_negative(void)
+{
+        int fence, timeline;
+
+        timeline = sw_sync_timeline_create();
+        ASSERT(timeline > 0, "Failure allocating timeline\n");
+
+        fence = sw_sync_fence_create(-1, "fence", 1);
+        ASSERT(fence < 0, "Success allocating negative fence\n");
+
+        sw_sync_fence_destroy(fence);
+        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
new file mode 100644
index 000000000000..e471ba9390ca
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -0,0 +1,71 @@
+/*
+ *  sync test runner
+ *  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 <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "synctest.h"
+
+static int run_test(int (*test)(void), char *name)
+{
+        int result;
+        pid_t childpid;
+
+        fflush(stdout);
+        childpid = fork();
+
+        if (childpid) {
+                waitpid(childpid, &result, 0);
+                if (WIFEXITED(result))
+                        return WEXITSTATUS(result);
+                return 1;
+        }
+
+        printf("[RUN]\tExecuting %s\n", name);
+        exit(test());
+}
+
+int main(void)
+{
+        int err = 0;
+
+        printf("[RUN]\tTesting sync framework\n");
+
+        err += RUN_TEST(test_alloc_timeline);
+        err += RUN_TEST(test_alloc_fence);
+        err += RUN_TEST(test_alloc_fence_negative);
+
+        if (err)
+                printf("[FAIL]\tsync errors: %d\n", err);
+        else
+                printf("[OK]\tsync\n");
+
+        return !!err;
+}
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
new file mode 100644
index 000000000000..7d2d8ce1d71a
--- /dev/null
+++ b/tools/testing/selftests/sync/synctest.h
@@ -0,0 +1,47 @@
+/*
+ *  sync tests
+ *  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.
+ */
+
+#ifndef SELFTESTS_SYNCTEST_H
+#define SELFTESTS_SYNCTEST_H
+
+#include <stdio.h>
+
+#define ASSERT(cond, msg) do { \
+        if (!(cond)) { \
+                printf("[BAD]\t%s", (msg)); \
+                return 1; \
+        } \
+} while (0)
+
+#define RUN_TEST(x) run_test((x), #x)
+
+/* Allocation tests */
+int test_alloc_timeline(void);
+int test_alloc_fence(void);
+int test_alloc_fence_negative(void);
+
+#endif