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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-16 17:13:02 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-16 17:17:10 +0000 |
| commit | 8c185ecaf4ee6966144c3897afdda557c5849bb0 (patch) | |
| tree | 15b61ddfb7c8d167886dfe927245ac8ccbfdc488 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | 3fc03069bc6e6c316f19bb526e3c8ce784677477 (diff) | |
| download | lwn-8c185ecaf4ee6966144c3897afdda557c5849bb0.tar.gz lwn-8c185ecaf4ee6966144c3897afdda557c5849bb0.zip | |
drm/i915: Split I915_RESET_IN_PROGRESS into two flags
I915_RESET_IN_PROGRESS is being used for both signaling the requirement
to i915_mutex_lock_interruptible() to avoid taking the struct_mutex and
to instruct a waiter (already holding the struct_mutex) to perform the
reset. To allow for a little more coordination, split these two meaning
into a couple of distinct flags. I915_RESET_BACKOFF tells
i915_mutex_lock_interruptible() not to acquire the mutex and
I915_RESET_HANDOFF tells the waiter to call i915_reset().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170316171305.12972-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 505c402cacaa..d62cf2e51d12 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1305,16 +1305,18 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) enum intel_engine_id id; if (test_bit(I915_WEDGED, &dev_priv->gpu_error.flags)) - seq_printf(m, "Wedged\n"); - if (test_bit(I915_RESET_IN_PROGRESS, &dev_priv->gpu_error.flags)) - seq_printf(m, "Reset in progress\n"); + seq_puts(m, "Wedged\n"); + if (test_bit(I915_RESET_BACKOFF, &dev_priv->gpu_error.flags)) + seq_puts(m, "Reset in progress: struct_mutex backoff\n"); + if (test_bit(I915_RESET_HANDOFF, &dev_priv->gpu_error.flags)) + seq_puts(m, "Reset in progress: reset handoff to waiter\n"); if (waitqueue_active(&dev_priv->gpu_error.wait_queue)) - seq_printf(m, "Waiter holding struct mutex\n"); + seq_puts(m, "Waiter holding struct mutex\n"); if (waitqueue_active(&dev_priv->gpu_error.reset_queue)) - seq_printf(m, "struct_mutex blocked for reset\n"); + seq_puts(m, "struct_mutex blocked for reset\n"); if (!i915.enable_hangcheck) { - seq_printf(m, "Hangcheck disabled\n"); + seq_puts(m, "Hangcheck disabled\n"); return 0; } @@ -4127,7 +4129,7 @@ i915_wedged_set(void *data, u64 val) * while it is writing to 'i915_wedged' */ - if (i915_reset_in_progress(&dev_priv->gpu_error)) + if (i915_reset_backoff(&dev_priv->gpu_error)) return -EAGAIN; i915_handle_error(dev_priv, val, |