drm/i915: Remove i915_gem_ringbuffer_(data|info) from debugfs

This was originally used as an attempt to diagnose GPU hangs, but was
never very reliable and superseded by the i915_error_state capture on
hangcheck. It now lies languishing unused and unwanted.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 35462df..8c899a2 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -602,69 +602,6 @@ static int i915_hws_info(struct seq_file *m, void *data)
        return 0;
 }
 
-static int i915_ringbuffer_data(struct seq_file *m, void *data)
-{
-       struct drm_info_node *node = (struct drm_info_node *) m->private;
-       struct drm_device *dev = node->minor->dev;
-       drm_i915_private_t *dev_priv = dev->dev_private;
-       struct intel_ring_buffer *ring;
-       int ret;
-
-       ret = mutex_lock_interruptible(&dev->struct_mutex);
-       if (ret)
-               return ret;
-
-       ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
-       if (!ring->obj) {
-               seq_printf(m, "No ringbuffer setup\n");
-       } else {
-               const u8 __iomem *virt = ring->virtual_start;
-               uint32_t off;
-
-               for (off = 0; off < ring->size; off += 4) {
-                       uint32_t *ptr = (uint32_t *)(virt + off);
-                       seq_printf(m, "%08x :  %08x\n", off, *ptr);
-               }
-       }
-       mutex_unlock(&dev->struct_mutex);
-
-       return 0;
-}
-
-static int i915_ringbuffer_info(struct seq_file *m, void *data)
-{
-       struct drm_info_node *node = (struct drm_info_node *) m->private;
-       struct drm_device *dev = node->minor->dev;
-       drm_i915_private_t *dev_priv = dev->dev_private;
-       struct intel_ring_buffer *ring;
-       int ret;
-
-       ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
-       if (ring->size == 0)
-               return 0;
-
-       ret = mutex_lock_interruptible(&dev->struct_mutex);
-       if (ret)
-               return ret;
-
-       seq_printf(m, "Ring %s:\n", ring->name);
-       seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
-       seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
-       seq_printf(m, "  Size :    %08x\n", ring->size);
-       seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
-       seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
-       if (IS_GEN6(dev) || IS_GEN7(dev)) {
-               seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
-               seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
-       }
-       seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
-       seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
-
-       mutex_unlock(&dev->struct_mutex);
-
-       return 0;
-}
-
 static const char *ring_str(int ring)
 {
        switch (ring) {
@@ -1910,12 +1847,6 @@ static struct drm_info_list i915_debugfs_list[] = {
        {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
        {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
        {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
-       {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
-       {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
-       {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
-       {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
-       {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
-       {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
        {"i915_error_state", i915_error_state, 0},
        {"i915_rstdby_delays", i915_rstdby_delays, 0},
        {"i915_cur_delayinfo", i915_cur_delayinfo, 0},