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anv/intel: add a new debug flag for stalling after every draw/dispatch

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Useful for hang debugging. Previously Anv incorrectly used DEBUG_SYNC
for this.

v2: Update documentations for sync/stall (Jordan)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15950>
This commit is contained in:
Lionel Landwerlin 2022-02-22 10:37:07 +02:00 • committed by Marge Bot
parent a1969fa777
commit 317512e038
3 changed files with 7 additions and 4 deletions
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7
docs/envvars.rst
View file

@ -326,11 +326,14 @@ Intel driver environment variables
``spill_vec4`` ``spill_vec4``
force spilling of all registers in the vec4 backend (useful to force spilling of all registers in the vec4 backend (useful to
debug spilling code) debug spilling code)
``stall``
inserts a stall on the GPU after each draw/dispatch command to
wait for it to finish before starting any new work.
``submit`` ``submit``
emit batchbuffer usage statistics emit batchbuffer usage statistics
``sync`` ``sync``
after sending each batch, emit a message and wait for that batch after sending each batch, wait on the CPU for that batch to
to finish rendering finish rendering
``task`` ``task``
dump shader assembly for task shaders dump shader assembly for task shaders
``tcs`` ``tcs``

2
src/intel/dev/intel_debug.h
View file

@ -59,7 +59,7 @@ extern uint64_t intel_debug;
#define DEBUG_URB (1ull << 11) #define DEBUG_URB (1ull << 11)
#define DEBUG_VS (1ull << 12) #define DEBUG_VS (1ull << 12)
#define DEBUG_CLIP (1ull << 13) #define DEBUG_CLIP (1ull << 13)
/* (1ull << 14) */ #define DEBUG_STALL (1ull << 14)
#define DEBUG_BLORP (1ull << 15) #define DEBUG_BLORP (1ull << 15)
#define DEBUG_NO16 (1ull << 16) #define DEBUG_NO16 (1ull << 16)
#define DEBUG_NO_DUAL_OBJECT_GS (1ull << 17) #define DEBUG_NO_DUAL_OBJECT_GS (1ull << 17)

2
src/intel/vulkan/anv_device.c
View file

@ -956,7 +956,7 @@ anv_physical_device_try_create(struct anv_instance *instance,
device->has_reg_timestamp = anv_gem_reg_read(fd, TIMESTAMP | I915_REG_READ_8B_WA, device->has_reg_timestamp = anv_gem_reg_read(fd, TIMESTAMP | I915_REG_READ_8B_WA,
&u64_ignore) == 0; &u64_ignore) == 0;
device->always_flush_cache = INTEL_DEBUG(DEBUG_SYNC) || device->always_flush_cache = INTEL_DEBUG(DEBUG_STALL) ||
driQueryOptionb(&instance->dri_options, "always_flush_cache"); driQueryOptionb(&instance->dri_options, "always_flush_cache");
device->has_mmap_offset = device->has_mmap_offset =