To make driver report a simulated hang in dmesg.
Suggested-by: Daniel Vetter <daniel.vet...@ffwll.ch>
Signed-off-by: Mika Kuoppala <mika.kuopp...@intel.com>
---
tests/gem_reset_stats.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/tests/gem_reset_stats.c b/tests/gem_reset_stats.c
index a7497f3..9e52b60 100644
--- a/tests/gem_reset_stats.c
+++ b/tests/gem_reset_stats.c
@@ -42,6 +42,7 @@
#include "intel_batchbuffer.h"
#include "intel_gpu_tools.h"
#include "rendercopy.h"
+#include "igt_debugfs.h"
#define RS_NO_ERROR 0
#define RS_BATCH_ACTIVE (1 << 0)
@@ -73,6 +74,8 @@ struct local_drm_i915_gem_context_destroy {
#define CONTEXT_DESTROY_IOCTL DRM_IOWR(DRM_COMMAND_BASE + 0x2e, struct
local_drm_i915_gem_context_destroy)
#define GET_RESET_STATS_IOCTL DRM_IOWR(DRM_COMMAND_BASE + 0x32, struct
local_drm_i915_reset_stats)
+static igt_debugfs_t dfs;
+
static uint32_t context_create(int fd)
{
struct local_drm_i915_gem_context_create create;
@@ -192,6 +195,17 @@ static int exec_valid(int fd, int ctx)
return exec.handle;
}
+static void stop_rings(void)
+{
+ int fd;
+
+ fd = igt_debugfs_open(&dfs, "i915_ring_stop", O_WRONLY);
+ igt_assert(fd >= 0);
+
+ igt_assert(write(fd, "0xff", 4) == 4);
+ close(fd);
+}
+
#define BUFSIZE (4 * 1024)
#define ITEMS (BUFSIZE >> 2)
@@ -284,6 +298,8 @@ static int inject_hang(int fd, int ctx)
free(buf);
+ stop_rings();
+
return exec.handle;
}
@@ -743,6 +759,8 @@ igt_main
igt_skip("Kernel is too old, or contexts not supported:
%s\n",
strerror(errno));
+ assert(igt_debugfs_init(&dfs) == 0);
+
close(fd);
}
--
1.7.9.5
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