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Batches are constrained in their position within the GTT by the kernel,
and if they are in an invalid position will be unbound and rebound
before execution. In our test setup, we therefore need to place the
batch into a valid poistion within the GTT before we fill the ring with
busyspinners.
The problem entirely lies in how we are constructing our set of busy
spinning batches. We try to fill the ring with a chain of batches that
are all linked to one buffer, and then try to execute that buffer. This
gives us the most implicit fences on that one buffer we can trivially
construct; with the goal being that the kernel handles them all with
aplomb. However, what we failed to take into account was that we might
end up with that final buffer being at address 0, which is in an invalid
location to execute from (because reasons) and the kernel would be
forced to move it. However, since we have a ring full of busy spinners
all using that buffer, we can not move that buffer until we wait for the
queue to complete -- which it never will and so we declare a GPU hang,
failing the test.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Katarzyna Dec <katarzyna.dec@intel.com>
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Some tests measure the render's ring size but are actually meant to
measure the smallest across all engines. This patch adds measuring the
smallest size in gem_measure_ring_size_inflight() given the appropriate
parameter.
v2:
- Only expose high level API. (Chris)
v3:
- Use ALL_ENGINES macro.
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Antonio Argenziano <antonio.argenziano@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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We current have a single for_each_engine() iterator which we use to
generate both a set of uABI engines and a set of physical engines.
Determining what uABI ring-id corresponds to an actual HW engine is
tricky, so pull that out to a library function and introduce
for_each_physical_engine() for cases where we want to issue requests
once on each HW ring (avoiding aliasing issues).
v2: Remember can_store_dword for gem_sync
v3: Find more open-coded for_each_physical
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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With intel_measure_ring_size added as common function we can use it
instead of the local copy
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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This patch adds a context creation ioctl wrapper that returns the error
for the caller to consume. Multiple tests that implemented this already,
have been changed to use the new library function.
v2:
- Add gem_require_contexts() to check for contexts support (Chris)
v3:
- Add gem_has_contexts to check for contexts support and change
gem_require_contexts to skip if contests support is not available.
(Chris)
v4:
- Cosmetic changes and use lib function in gem_ctx_create where
possible. (Michal)
v5:
- Use gem_contexts_require() in tests and fixtures. (Chris)
Signed-off-by: Antonio Argenziano <antonio.argenziano@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Ensure that the terminating write into WC-memory is flushed before we
might trigger a wait for ring space.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Since I accidentally broke the build for some, by putting the pretty
printer for submission inside ifdef HAVE_PROCPS, it's time to move the
whole thing into lib/i915 while fixing this mistake.
Let's also rename the pretty printer and add a doc to it as well as the
section.
Fixes: f6dfe556659f ("lib: Extract helpers for determining submission method")
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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Couple of tests are using either determining submission method, or
pretty printing. Let's move those to helpers in lib.
v2: s/igt_show/gem_show
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Katarzyna Dec <katarzyna.dec@intel.com>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Katarzyna Dec <katarzyna.dec@intel.com>
Acked-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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The sole purpose of this test is try and exercise
i915_gem_request_await_object() and descendants. In particular, asking
whether it is worth adding magic there.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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