From: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Add igt_require_sw_sync to provide tests to skip if sw_sync support isn't
available on the host machine.
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx>
---
lib/sw_sync.c | 22 ++++++++++++++++++++++
lib/sw_sync.h | 1 +
2 files changed, 23 insertions(+)
diff --git a/lib/sw_sync.c b/lib/sw_sync.c
index 862f8c4..38fe670 100644
--- a/lib/sw_sync.c
+++ b/lib/sw_sync.c
@@ -197,3 +197,25 @@ int sync_fence_count_status(int fd, int status)
igt_assert(count >= 0);
return count;
}
+
+static bool kernel_has_sw_sync(void)
+{
+ bool err;
+
+ igt_ignore_warn(system("/sbin/modprobe -s r sw_sync"));
+
+ err = false;
+ if (access(DEVFS_SW_SYNC, R_OK | W_OK) < 0) {
+ char buf[128];
+
+ snprintf(buf, sizeof(buf), "%s/sw_sync", igt_debugfs_mount());
+ err = access(DEBUGFS_SW_SYNC, R_OK | W_OK) < 0;
+ }
+
+ return !err;
+}
+
+void igt_require_sw_sync(void)
+{
+ igt_require(kernel_has_sw_sync());
+}
diff --git a/lib/sw_sync.h b/lib/sw_sync.h
index 1f47b29..0bbe73c 100644
--- a/lib/sw_sync.h
+++ b/lib/sw_sync.h
@@ -43,6 +43,7 @@ int sync_merge(int fd1, int fd2);
int sync_wait(int fence, int timeout);
int sync_fence_count(int fd);
int sync_fence_count_status(int fd, int status);
+void igt_require_sw_sync(void);
#endif
--
2.10.2
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