Chris mentioned he wanted to be able to measure a variable "for one
second" and use igt_stats to store them. That's one case where we don't
know the number of data points upfront.
We should really support that, so here it is.
v2: Just free ->sorted when a new capacity is needed.
ensure_sorted_values() will then reallocate the array to the new
capacity on demand (Chris)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Chris had a doubt, and I was lazy and didn't do a similar test for the
quartiles/median than for the mean (test_invalidate_mean()). Plug that
gap.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
We're going to use this simple fixture once more, might as well make a
function instead of copy/pasting code.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This changes how we compute the variance. We want an unbiased variance
when reasoning about a sample.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Because the structure started small, I initialized every member
directly, but that means that the new fields added weren't properly
initialized (sigh!). Zero the whole thing first then.
Also, the punishment for introducing a bug should be to write the
corresponding unit test. It's not a perfect one, but I'll take it.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Sure, that's an implementation details, but make sure we do recompute
the mean when we add a new value.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
With this, we don't need to worry about what happened to the buffer
before.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
I often run "sudo ./test 2>&1 | tee output.txt", and when we're
succeeding - never printing to stderr - the output gets buffered and
is never flushed (because it doesn't point to a terminal), so I never
know which test is running. With this fflush, I'm able to know when
each test finishes.
v2: Add blank line too (Chris)
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
The master plan would be to get a bit more stats in it, at least the
standard deviation and confidence interval. Just need the average for
now.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
If we are in an interactive session, enable the locale. This allows for
features like setting thousand separators for printing large values. By
only enabling it for interactive terminals, we avoid changing outputs
for the test scripts (leaving them as the "C" locale).
Note this mainly affects the testcases, or binaries built using libigt.
Other binaries need to be localised separately.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Uses kernel commit 49e4d842f0d0892c3d26c93a81b9f22c1467030e
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon Jun 15 12:23:48 2015 +0100
drm/i915: Report to userspace if we have a (presumed) working GPU reset
to determine whether the kernel has a working GPU reset before injecting
a hang (and so skip tests requring hang recovery if not available).
Unit test to check a segfaulting subtest is handled correctly.
v2: Added script to check subtest results
v3: Removed script. Updated test to use fork to monitor return status.
v4: Added igt_segfault to .gitignore
Signed-off-by: Derek Morton <derek.j.morton@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Some i915.ko features have very nice IGT tests, which are never
executed because the features are disabled by default. This leads to
unnoticed regressions both in the Kernel and in the IGT tests. We
have seen this multiple times, for example, on FBC and PSR.
We want to be able to run IGT and actually test these
disabled-by-default features in order to make sure we at least don't
break them even more. Sometimes they may be disabled for some specific
reason, and we don't want to increase the set of reasons without
noticing.
To help solving this problem, this commit adds some helper functions
that should make it easier to change certain i915.ko parameters and
then restore their original values at the end of the test. With this,
I'm hoping QA will be able to detect any regressions and automatically
bisect them - or, with PRTS, reject the patches before they are even
merged.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
fatal_signal_handler() was trapping fatal errors but not
flagging the test as failing or setting an exit code.
The result was that the test would return Ok or Skipped
depending on what the other subtests did even though one
of the subtests had segfaulted.
Signed-off-by: Derek Morton <derek.j.morton@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Add a make file for android so the unit tests can be built.
Enabled asserts for the library code so the unit test behaviour
is correct.
Signed-off-by: Derek Morton <derek.j.morton@intel.com>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
It can be useful to have one of those to carry state between the handler
parsing the options and the rest of the test. Right now the only thing
we can do is to use global variables for that.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Fix various typos, add missing parameter documentation, include the
igt_draw section and update the list of ignored headers.
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Let's just steal the "crc" namespace and add this by default to
igt_pipe_crc_collect_crc() instead of adding more calls to other
tests. If tests want special waits on just some of their collect_crc()
calls, they can use another name instead of "crc".
This is very useful when developing, especially when the CRC we get is
wrong: we want to look at the screen to see what's going on before we
can think about how to fix the problem. So let's add this to the lib
instead of adding this to every single test I need to debug.
v2: Add some documentation (Daniel).
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
There were two paths for fb and !fb.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: chandra konduru <chandra.konduru@intel.com>
Cc: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
I think;
commit a26f9f9ad0e679c7ce413a25d34f6914e1174151
Author: chandra konduru <chandra.konduru@intel.com>
Date: Mon Mar 30 13:52:04 2015 -0700
i-g-t: Adding plane scaling test case
introduced a condition where it attempts to update a disabled plane because
of the newly introduced size_changed flag which is set for disabled frame
buffers. Result is a NULL ptr deref in igt_drm_plane_commit (plane->fb->src_x).
Start recognising this case as disabled plane and act accordingly.
v2: Split out igt_plane_set_fb cleanup. (Thomas Wood)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: chandra konduru <chandra.konduru@intel.com>
Cc: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Those messages where missing a new line at the end. Take the opportunity
to re-format the messages to fit in the 80 chars limit.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
For all those IGT tests that need an easy way to draw rectangles on
buffers using different methods. Current planned users: FBC and PSR
CRC tests.
There is also a tests/kms_draw_crc program to check if the library is
sane.
v2: - Move the test from lib/tests to tests/ (Daniel).
- Add igt_require() to filter out the swizzling/tiling methods we
don't support (Daniel).
- Simplify reloc handling on the BLT case (Daniel).
- Document enum igt_draw_method (Daniel).
- Document igt_draw_get_method_name() (Paulo).
v3: - Add IGT_DRAW_MMAP_WC (Chris).
- Implement the other trivial swizzling methods (Chris).
- Remove the gem_sync() calls (Chris).
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
