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2015-07-02docs: various documentation fixesThomas Wood
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
2015-07-02docs: fix duplicated ID errorThomas Wood
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
2015-07-02docs: fix "no link" warningThomas Wood
igt_save_module_param is an internal static function and therefore isn't included in the public API documentation. Signed-off-by: Thomas Wood <thomas.wood@intel.com>
2015-07-02docs: add the annotation glossaryThomas Wood
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
2015-07-02docs: override section id to avoid '/' in filenamesThomas Wood
The section id is generated from the section title and is used to create the html output filename, which therefore causes problems if it includes a '/' character. Cc: Damien Lespiau <damien.lespiau@intel.com> Signed-off-by: Thomas Wood <thomas.wood@intel.com>
2015-07-01igt/gem_exec_nop: Control boost/idle frequenciesChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2015-07-01igt/gem_exec_nop: Wait between runsChris Wilson
In order to keep the GPU in a consistent state between samples, we have to wait for it to fall asleep before proceeding. For fun hook up igt_stats. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2015-07-01stats: Add trimeanChris Wilson
https://en.wikipedia.org/wiki/Trimean The trimean is a the most efficient 3-point L-estimator (estimator of central tendency, i.e. average), even more robust than the median at estimating the average of a sample population. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2015-07-01stats: Add the interquartile mean (IQM)Chris Wilson
https://en.wikipedia.org/wiki/Interquartile_mean The IQM is a truncated mean and so is very similar to the scoring method used in sports that are evaluated by a panel of judges: discard the lowest and the highest scores; calculate the mean value of the remaining scores. It's useful to hide outliers in measurements (due to cold cache etc), without having to worry too much about the actual distribution. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2015-06-30tools: Add an intel_firmware_decode toolDamien Lespiau
So we can inspect fw headers. Sample output: Firmware: skl_dmc_ver1_18.bin (7892 bytes) CSS header (128 bytes) module_type: DMC (9) header_len: 32 header_ver: 0x10000 module_id: 0x0 module_vendor: 0x0 date: 0x7df060c size: 1973 key_size: 0 modulus_size: 0 exponent_size: 0 version: 1.18 (0x10012) kernel_header_info: 0x0 Package header (256 bytes) header_len: 64 header_ver: 1 num_entries: 3 Firmware #1 stepping: A.* offset: 4294967295 Firmware #2 stepping: B.* offset: 4294967295 Firmware #3 stepping: *.* offset: 0 0x7f0867143000 0x7f0867143180 signature: 0x40403e3e header_len: 128 header_ver: 1 dmcc_ver: 520 project: 0x900 fw_size: 1845 fw_version: 0x10008 mmio_count: 3 write(0x0008f074, 0x00002fc0) write(0x0008f004, 0x02500204) write(0x0008f034, 0xc003b400) Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-29tests/gem_ringfill: Add {render,blitter}-forked-1 subtests.Joonas Lahtinen
Add forking subtests to gem_ringfill. Tests cause consistent GPU hangs on SKL. v2: Removed noop parts. v3: - Allow executing the tests in order too (Chris Wilson). - Rename the tests to -forked-1 Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> [ickle: Extend to cover forked-N] Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89959
2015-06-27stats: Exercise the reallocation pathsDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Spwan igt_init_with_size() from igt_init()Damien Lespiau
It's all about good looking APIs. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Allow the underlying arrays to grow at willDamien Lespiau
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>
2015-06-27stats: Test we do correctly invalidate the sorted arrayDamien Lespiau
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>
2015-06-27stats: Add support for the interquartile range (IQR)Damien Lespiau
IQR is a good measure of dispersion. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add support for quartiles (and thus median)Damien Lespiau
More stuff, quite useful characteristics of a dataset. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add a bulk version of _push()Damien Lespiau
In case we want to push a bunch of values in one go. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Use igt_assert_eq_double() when asserting on doublesDamien Lespiau
Lucky enough to have exact values, == works! Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27lib: Add double versions of igt_assert_cmp() and igt_assert_eq()Damien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27docs: Add documentation for igt_assert_cmpuint()Damien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27docs: Add documentation for igt_assert_u32()Damien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27docs: Fix a "libraray" typoDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add igt_stats_get_range()Damien Lespiau
Somewhat useful, for instance to size an histogram. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add functions to retrieve min/max values of the datasetDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Factor out a fixture to initialize statsDamien Lespiau
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>
2015-06-27stats: Add a note about the standard deviation derived from unbiased varianceDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add a getter for the population propertyDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add a way to specify if the data set is a population or a sampleDamien Lespiau
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>
2015-06-27stats: Add gtkdoc section for igt_statsDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Add header gardsDamien Lespiau
Sigh. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27doc: Remove i-g-t/intel prefixes and capitalize section titlesDamien Lespiau
Looks better! Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Zero the whole structure at init() timeDamien Lespiau
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>
2015-06-27tests/stats: Make sure we properly invalidate the cached meanDamien Lespiau
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>
2015-06-27stats: Add a way to retrieve the standard deviationDamien Lespiau
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Use an algorithm popularised by Knuth to compute mean and varianceDamien Lespiau
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27tests/igt_stats: Call igt_stats_fini() to not leak the arrayDamien Lespiau
Sure, it'll be freed at exit(), but might as well be a bit pedantic. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-27stats: Be more precise and talk about mean, not averageDamien Lespiau
There are several types of averages eg. mean, median and mode. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-26lib/igt_draw: move to the GTT domain before using GTT mmapsPaulo Zanoni
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>
2015-06-26lib/igt_core: fflush stdout after printing subtest resultsPaulo Zanoni
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>
2015-06-26igt/gem_fenced_exec_thrash: Tidy testing of expected execbuf errorsChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2015-06-26igt/gem_fenced_exec_thrash: Fix memory leak between testsDerek Morton
gem_fenced_exec_thrash was not freeing any resources between subtests. On 1Gb android systems this resulted in the test failing with an OOM error. Added cleanup code to free BOs at the end of each subtest. Signed-off-by: Derek Morton <derek.j.morton@intel.com>
2015-06-25kms_frontbuffer_tracking: GTT mmap writes disable PSRPaulo Zanoni
And they keep it disabled until something else enables it. So let's consider this on the draw subtests. With this, some PSR tests that were failing will now start passing. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
2015-06-25kms_frontbuffer_tracking: use CPU mmaps for fill_fb_region()Paulo Zanoni
Because the GTT mmaps "permanently" disable PSR and this can mess some of our assertions. So let's just use the CPU domain to keep the implementation simple. With this, some PSR tests that were failing will now start passing. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
2015-06-25kms_frontbuffer_tracking: remove offscreen-{cur,spr} subtestsPaulo Zanoni
It doesn't make sense to write on the sprite/cursor plane of the "offscreen" screen. The pick_target() function was just returning the offscreen_fb pointer for those cases, so we were not really testing any cursor or sprite code. So the tests were just the same as offscreen-pri. That kills 24 subtests for each feature (72 in total). Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
2015-06-25tests/kms_frontbuffer_tracking: add modesetfrombusy testPaulo Zanoni
This test exercies the dev_priv->fb_tracking.busy_bits bug I recently found and Daniel fixed. Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
2015-06-25skl_compute_wrpll: Don't try other dividers if we find a 0 central freq ↵Damien Lespiau
deviation Paulo suggested that we could short-circuit the search for a good divider if we find a 0 deviation of the DCO frequency from the central frequency. Out of the 373 test frequencies, 34 hit that fast path. Suggested-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-25skl_compute_wrpll: Sync a comment with from the kernel codeDamien Lespiau
Might as well try to keep the code in both this test and the kernel as close as possible. Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-25skl_compute_wrpll: Fix the mininum deviation computationDamien Lespiau
Paulo noticed that, because we were only comparing positive deviations with positive deviations and negative deviations with negative deviations, we weren't actually always using the absolute minimal deviation at all. This improves the average deviation across all tested frequencies (373): before: average deviation: 215.13 after: average deviation: 194.47 Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
2015-06-25skl_compute_wrpll: Cycle through dividers, then central freqsDamien Lespiau
Follow Paulo's comment on the corresponding kernel patch. This means we also have to move the break when we have cycled through the even dividers as well. This improves the number of even dividers used across the tested frequencies (373) (at the expense of a slightly worse average deviation, but "even dividers take precedence over a lower deviation". before: even/odd dividers: 338/35 average deviation: 206.52 after: even/odd dividers: 363/10 average deviation: 215.13 Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
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