On 10/10/2019 08:14, Chris Wilson wrote:
Before we BUG out with bad pending state, leave a telltale as to which
test failed.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 30 ++++++++++++++++++++++++-----
drivers/gpu/drm/i915/i915_gem.h | 8 ++++----
2 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c
b/drivers/gpu/drm/i915/gt/intel_lrc.c
index a0777b3ad68a..5040fbdd81af 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -1138,25 +1138,45 @@ assert_pending_valid(const struct
intel_engine_execlists *execlists,
trace_ports(execlists, msg, execlists->pending);
- if (!execlists->pending[0])
+ if (!execlists->pending[0]) {
+ GEM_TRACE_ERR("Nothing pending for promotion!\n");
return false;
+ }
- if (execlists->pending[execlists_num_ports(execlists)])
+ if (execlists->pending[execlists_num_ports(execlists)]) {
+ GEM_TRACE_ERR("Excess pending[%d] for promotion!\n",
+ execlists_num_ports(execlists));
return false;
+ }
for (port = execlists->pending; (rq = *port); port++) {
- if (ce == rq->hw_context)
+ if (ce == rq->hw_context) {
+ GEM_TRACE_ERR("Duplicate context in pending[%zd]\n",
+ port - execlists->pending);
return false;
+ }
ce = rq->hw_context;
if (i915_request_completed(rq))
continue;
- if (i915_active_is_idle(&ce->active))
+ if (i915_active_is_idle(&ce->active)) {
+ GEM_TRACE_ERR("Inactive context in pending[%zd]\n",
+ port - execlists->pending);
+ return false;
+ }
+
+ if (!i915_vma_is_pinned(ce->state)) {
+ GEM_TRACE_ERR("Unpinned context in pending[%zd]\n",
+ port - execlists->pending);
return false;
+ }
- if (!i915_vma_is_pinned(ce->state))
+ if (!i915_vma_is_pinned(ce->ring->vma)) {
+ GEM_TRACE_ERR("Unpinned ringbuffer in pending[%zd]\n",
+ port - execlists->pending);
return false;
+ }
}
return ce;
diff --git a/drivers/gpu/drm/i915/i915_gem.h b/drivers/gpu/drm/i915/i915_gem.h
index 6795f1daa3d5..63dab3765106 100644
--- a/drivers/gpu/drm/i915/i915_gem.h
+++ b/drivers/gpu/drm/i915/i915_gem.h
@@ -37,10 +37,8 @@ struct drm_i915_private;
#define GEM_SHOW_DEBUG() (drm_debug & DRM_UT_DRIVER)
#define GEM_BUG_ON(condition) do { if (unlikely((condition))) { \
- pr_err("%s:%d GEM_BUG_ON(%s)\n", \
- __func__, __LINE__, __stringify(condition)); \
- GEM_TRACE("%s:%d GEM_BUG_ON(%s)\n", \
- __func__, __LINE__, __stringify(condition)); \
+ GEM_TRACE_ERR("%s:%d GEM_BUG_ON(%s)\n", \
+ __func__, __LINE__, __stringify(condition)); \
BUG(); \
} \
} while(0)
@@ -66,11 +64,13 @@ struct drm_i915_private;
#if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM)
#define GEM_TRACE(...) trace_printk(__VA_ARGS__)
+#define GEM_TRACE_ERR(...) do { pr_err(__VA_ARGS__);
trace_printk(__VA_ARGS__); } while (0)
#define GEM_TRACE_DUMP() ftrace_dump(DUMP_ALL)
#define GEM_TRACE_DUMP_ON(expr) \
do { if (expr) ftrace_dump(DUMP_ALL); } while (0)
#else
#define GEM_TRACE(...) do { } while (0)
+#define GEM_TRACE_ERR(...) do { } while (0)
#define GEM_TRACE_DUMP() do { } while (0)
#define GEM_TRACE_DUMP_ON(expr) BUILD_BUG_ON_INVALID(expr)
#endif
Reviewed-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Regards,
Tvrtko
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