If we listen to the uevents from the kernel, we can detect when the GPU
hangs. This requires us to fork a helper process to do so and send a
signal back to the parent.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
To simplify and speed up running interruptible tests, use a custom
ioctl() function that control the signaling and detect when we need no
more iterations to trigger an interruption.
We use a realtime timer to inject the signal after a certain delay,
increasing the delay on every loop to try and exercise different code
paths within the function. The first delay is very short such that we
hopefully enter the kernel with a pending signal.
Clients should use
struct igt_sigiter iter = {};
while (igt_sigiter_repeat(&iter, enable_interrupts=true))
do_test()
to automatically repeat the test until we can inject no more signals
into the ioctls. This is condensed into a macro
igt_interruptible(enable_interrupts=true)
do_test();
for convenience.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Add an optional dependency on libunwind to print stack traces when a
test assertion fails.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
We should get more kms tests soon, and not needing to copy-paste a
nice test pattern should be useful.
That establishes a firm depency of i-g-t on cairo over everything, but
I don't care so much about that.
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
A common xorg idiom is used. The dependencies are auto-detected.
If they are present, the debugger is build.
If any are missing, the debugger is silently skipped.
If --enable-shader-debugger is specified, the configuration
will abort if any of the dependencies is missing.
No user actions is needed, no env variable to set (as it should be)
This will fix a number of problems:
build cannot start due Makefile missing in tarball.
build fails as GEN4ASM variable not available in Makefile.
distcheck is also disturbed.
In the process other minor problems were fixed:
helper target is missing dependencies on evict.h.
too may arguments given to pre_cpp.py but they were ignored.
fills /tmp with temporary files.
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
Use CWARNFLAGS as in all of xorg. There seems to be no reason why this
module should be different. The warnings were updated recently
for those who install the latest util-macros.
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
high level summary of the files:
* debug_rdata - get current state from debug registers. Helpful
when developing the debugger, and could serve some purpose in the
future.
* eudb - the debugger itself
* eviction_macro - generate the proper macro to flush the EU render
cache until I get control flow working
* pre_cpp - an evaluating c preprocesser like thing, to be used before
cpp
* sr - the system routine, exception handler which runs on the EU
* test - a very basic test system routine
* debug.h
