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drm/msm: add rd logging debugfs

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To ease debugging, add debugfs file which can be cat/tail'd to log
submits, along with fence #.  If GPU hangs, you can look at 'gpu'
debugfs file to find last completed fence and current register state,
and compare with logged rd file to narrow down the DRAW_INDX which
triggered the GPU hang.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark
2014-05-30 14:47:38 -04:00
parent fb27b8f29f
commit a7d3c9509b
7 changed files with 392 additions and 1 deletions
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11
drivers/gpu/drm/msm/msm_drv.h
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@@ -55,6 +55,8 @@ static inline struct device *msm_iommu_get_ctx(const char *ctx_name)
struct msm_kms;
struct msm_gpu;
struct msm_mmu;
struct msm_rd_state;
struct msm_gem_submit;
#define NUM_DOMAINS 2 /* one for KMS, then one per gpu core (?) */
@@ -82,6 +84,8 @@ struct msm_drm_private {
uint32_t next_fence, completed_fence;
wait_queue_head_t fence_event;
struct msm_rd_state *rd;
/* list of GEM objects: */
struct list_head inactive_list;
@@ -204,6 +208,13 @@ void __exit hdmi_unregister(void);
void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);
void msm_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m);
int msm_debugfs_late_init(struct drm_device *dev);
int msm_rd_debugfs_init(struct drm_minor *minor);
void msm_rd_debugfs_cleanup(struct drm_minor *minor);
void msm_rd_dump_submit(struct msm_gem_submit *submit);
#else
static inline int msm_debugfs_late_init(struct drm_device *dev) { return 0; }
static inline void msm_rd_dump_submit(struct msm_gem_submit *submit) {}
#endif
void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,