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Flush the secondary buffer from the cpu cache before dirtying the cache
for the primary to ensure a better chance of the primary buffer
remaining in cache, causing the incoherency.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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A few more tests that use i915/gem without first checking that the GPU is
working.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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- Give __ prefix to internal funcstion and structs, only
igt_interruptible is used by tests.
- Move docs to igt_interruptible and adjust.
- Explain more clearly how the timeout is getting doubled each
iteration until no more interruptions happen. Also rename the
argument to give it a more meaningful name in the docs.
- Link from other functions to this one for cross-referencing.
- Rename to igt_do_interruptible to make it clearer it's a loop,
inspired by do {} while () loops.
v2: Rename instead to igt_while_interruptible and fix typos (Chris).
And add gtk-doc for igt_ioctl, too.
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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Use the new fangled igt_interruptible() to limit the number of passes we
require when performing signal injection.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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This patch adds ioctl-errors subtest to be used for exercising prime sync ioctl
errors.
The subtest constantly interrupts via signals a function doing concurrent blit
to stress out the right usage of prime_sync_*, making sure these ioctl errors
are handled accordingly. Important to note that in case of failure (e.g. in a
case where the ioctl wouldn't try again in a return error) this test does not
reliably catch the problem with 100% of accuracy.
v2: fix prime sync direction when reading mmap'ed file.
v3: change the upper bound using time rather than loops
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
[ickle: fix memleak, run for longer]
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Allow read-only synchronisation on dmabuf mmaps, useful to allow
concurrent read-read testing between the CPU and GPU.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Different than kms_mmap_write_crc that captures the coherency issues within the
scanout mapped buffer, this one is meant for test dma-buf mmap on !llc
platforms mostly and provoke coherency bugs so we know where we need the sync
ioctls.
I tested this with !llc and llc platforms, BTY and IVY respectively.
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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