i915: Exercise sysfs client properties

We store every client name, pid and runtime under sysfs. Better check
that matches with the actual client.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/igt_sysfs.c b/lib/igt_sysfs.c
index 6aafe534..e734143b 100644
--- a/lib/igt_sysfs.c
+++ b/lib/igt_sysfs.c
@@ -379,6 +379,42 @@ uint32_t igt_sysfs_get_u32(int dir, const char *attr)
 }
 
 /**
+ * igt_sysfs_get_u64:
+ * @dir: directory for the device from igt_sysfs_open()
+ * @attr: name of the sysfs node to open
+ *
+ * Convenience wrapper to read a unsigned 64bit integer from a sysfs file.
+ *
+ * Returns:
+ * The value read.
+ */
+uint64_t igt_sysfs_get_u64(int dir, const char *attr)
+{
+	uint64_t result;
+
+	if (igt_sysfs_scanf(dir, attr, "%"PRIu64, &result) != 1)
+		return 0;
+
+	return result;
+}
+
+/**
+ * igt_sysfs_set_u64:
+ * @dir: directory for the device from igt_sysfs_open()
+ * @attr: name of the sysfs node to open
+ * @value: value to set
+ *
+ * Convenience wrapper to write a unsigned 64bit integer to a sysfs file.
+ *
+ * Returns:
+ * True if successfully written
+ */
+bool igt_sysfs_set_u64(int dir, const char *attr, uint64_t value)
+{
+	return igt_sysfs_printf(dir, attr, "%"PRIu64, value) > 0;
+}
+
+/**
  * igt_sysfs_set_u32:
  * @dir: directory for the device from igt_sysfs_open()
  * @attr: name of the sysfs node to open