* [PATCH i-g-t] tests/gem_ctx_param: Update invalid param
@ 2017-12-15 19:01 Antonio Argenziano
2017-12-15 19:38 ` ✓ Fi.CI.BAT: success for " Patchwork
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Antonio Argenziano @ 2017-12-15 19:01 UTC (permalink / raw)
To: intel-gfx
Since commit: drm/i915/scheduler: Support user-defined priorities, the
driver support an extra context param to set context's priority. Add
tests for that interface and update invalid tests.
Signed-off-by: Antonio Argenziano <antonio.argenziano@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
---
tests/gem_ctx_param.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 76 insertions(+), 1 deletion(-)
diff --git a/tests/gem_ctx_param.c b/tests/gem_ctx_param.c
index c20ae1ee..9a222e60 100644
--- a/tests/gem_ctx_param.c
+++ b/tests/gem_ctx_param.c
@@ -25,6 +25,7 @@
*/
#include "igt.h"
+#include <limits.h>
IGT_TEST_DESCRIPTION("Basic test for context set/get param input validation.");
@@ -136,11 +137,85 @@ igt_main
gem_context_set_param(fd, &arg);
}
+#define MAX_PRIO 1023
+#define MIN_PRIO -MAX_PRIO
+#define DEF_PRIO 0
+
+ arg.param = I915_CONTEXT_PARAM_PRIORITY;
+
+ igt_subtest("root-set-priority") {
+ arg.ctx_id = ctx;
+ arg.size = 0;
+
+ for (int i = MIN_PRIO; i <= MAX_PRIO; i += 1023) {
+ arg.value = i;
+ gem_context_set_param(fd, &arg);
+
+ gem_context_get_param(fd, &arg);
+ igt_assert(arg.value == i); /* Verify prio was set */
+ }
+ }
+
+ igt_subtest("root-set-priority-invalid-value") {
+ int prio_levels[] = {INT_MIN, MIN_PRIO - 1, MAX_PRIO + 1, INT_MAX};
+ int old_value;
+ arg.ctx_id = ctx;
+
+ gem_context_get_param(fd, &arg);
+ old_value = arg.value;
+
+ for (int i = 0; i < (sizeof(prio_levels) / sizeof(int)); i++) {
+ arg.value = prio_levels[i];
+ igt_assert_eq(__gem_context_set_param(fd, &arg), -EINVAL);
+
+ gem_context_get_param(fd, &arg);
+ igt_assert(arg.value == old_value); /* Verify prio was not set */
+ }
+ }
+
+ igt_subtest("user-set-priority") {
+ arg.size = 0;
+
+ igt_fork(child, 1) {
+ igt_drop_root();
+ for (int i = MIN_PRIO; i <= DEF_PRIO; i += 1023) {
+ arg.value = i;
+ gem_context_set_param(fd, &arg);
+
+ gem_context_get_param(fd, &arg);
+ igt_assert(arg.value == i); /* Verify prio was set */
+ }
+ }
+
+ igt_waitchildren();
+ }
+
+ igt_subtest("user-set-priority-invalid-value") {
+ int prio_levels[] = {DEF_PRIO + 1, MAX_PRIO};
+ arg.ctx_id = ctx;
+ arg.size = 0;
+
+ igt_fork(child, 1) {
+ igt_drop_root();
+
+ for (int i = 0; i < (sizeof(prio_levels) / sizeof(int)); i++) {
+ arg.value = prio_levels[i];
+ igt_assert_eq(__gem_context_set_param(fd, &arg), -EPERM);
+
+ gem_context_get_param(fd, &arg);
+ igt_assert(arg.value == DEF_PRIO); /* Verify prio was not set */
+ }
+ }
+
+ igt_waitchildren();
+ }
+
+
/* NOTE: This testcase intentionally tests for the next free parameter
* to catch ABI extensions. Don't "fix" this testcase without adding all
* the tests for the new param first.
*/
- arg.param = I915_CONTEXT_PARAM_BANNABLE + 1;
+ arg.param = I915_CONTEXT_PARAM_PRIORITY + 1;
igt_subtest("invalid-param-get") {
arg.ctx_id = ctx;
--
2.14.2
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* ✓ Fi.CI.BAT: success for tests/gem_ctx_param: Update invalid param
2017-12-15 19:01 [PATCH i-g-t] tests/gem_ctx_param: Update invalid param Antonio Argenziano
@ 2017-12-15 19:38 ` Patchwork
2017-12-15 22:40 ` ✓ Fi.CI.IGT: " Patchwork
2017-12-16 0:14 ` [PATCH i-g-t] " Chris Wilson
2 siblings, 0 replies; 6+ messages in thread
From: Patchwork @ 2017-12-15 19:38 UTC (permalink / raw)
To: Antonio Argenziano; +Cc: intel-gfx
== Series Details ==
Series: tests/gem_ctx_param: Update invalid param
URL : https://patchwork.freedesktop.org/series/35438/
State : success
== Summary ==
IGT patchset tested on top of latest successful build
c0be3310715e2f744b892c51f09e62273bcc8e57 tests/kms_frontbuffer_tracking: Correctly handle debugfs errors
with latest DRM-Tip kernel build CI_DRM_3524
d4fa2d8c0c1d drm-tip: 2017y-12m-15d-18h-22m-22s UTC integration manifest
Testlist changes:
+igt@gem_ctx_param@root-set-priority
+igt@gem_ctx_param@root-set-priority-invalid-value
+igt@gem_ctx_param@user-set-priority
+igt@gem_ctx_param@user-set-priority-invalid-value
Test gem_mmap_gtt:
Subgroup basic-small-bo-tiledx:
fail -> PASS (fi-gdg-551) fdo#102575
Test gem_sync:
Subgroup basic-all:
dmesg-fail -> FAIL (fi-blb-e6850) fdo#104259
Test kms_pipe_crc_basic:
Subgroup suspend-read-crc-pipe-b:
incomplete -> PASS (fi-snb-2520m) fdo#103713
Test kms_psr_sink_crc:
Subgroup psr_basic:
pass -> DMESG-WARN (fi-skl-6700hq) fdo#101144
fdo#102575 https://bugs.freedesktop.org/show_bug.cgi?id=102575
fdo#104259 https://bugs.freedesktop.org/show_bug.cgi?id=104259
fdo#103713 https://bugs.freedesktop.org/show_bug.cgi?id=103713
fdo#101144 https://bugs.freedesktop.org/show_bug.cgi?id=101144
fi-bdw-5557u total:288 pass:267 dwarn:0 dfail:0 fail:0 skip:21 time:435s
fi-bdw-gvtdvm total:288 pass:264 dwarn:0 dfail:0 fail:0 skip:24 time:442s
fi-blb-e6850 total:288 pass:222 dwarn:1 dfail:0 fail:1 skip:64 time:389s
fi-bsw-n3050 total:288 pass:242 dwarn:0 dfail:0 fail:0 skip:46 time:507s
fi-bwr-2160 total:288 pass:183 dwarn:0 dfail:0 fail:0 skip:105 time:278s
fi-bxt-dsi total:288 pass:258 dwarn:0 dfail:0 fail:0 skip:30 time:495s
fi-bxt-j4205 total:288 pass:259 dwarn:0 dfail:0 fail:0 skip:29 time:498s
fi-byt-j1900 total:288 pass:253 dwarn:0 dfail:0 fail:0 skip:35 time:490s
fi-byt-n2820 total:288 pass:249 dwarn:0 dfail:0 fail:0 skip:39 time:470s
fi-elk-e7500 total:224 pass:163 dwarn:15 dfail:0 fail:0 skip:45
fi-gdg-551 total:288 pass:179 dwarn:1 dfail:0 fail:0 skip:108 time:264s
fi-glk-1 total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:537s
fi-hsw-4770 total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:406s
fi-hsw-4770r total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:413s
fi-ivb-3520m total:288 pass:259 dwarn:0 dfail:0 fail:0 skip:29 time:472s
fi-ivb-3770 total:288 pass:255 dwarn:0 dfail:0 fail:0 skip:33 time:428s
fi-kbl-7500u total:288 pass:263 dwarn:1 dfail:0 fail:0 skip:24 time:481s
fi-kbl-7560u total:288 pass:268 dwarn:1 dfail:0 fail:0 skip:19 time:520s
fi-kbl-7567u total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:474s
fi-kbl-r total:288 pass:260 dwarn:1 dfail:0 fail:0 skip:27 time:523s
fi-pnv-d510 total:288 pass:221 dwarn:1 dfail:0 fail:1 skip:65 time:594s
fi-skl-6260u total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:453s
fi-skl-6600u total:288 pass:260 dwarn:1 dfail:0 fail:0 skip:27 time:531s
fi-skl-6700hq total:288 pass:261 dwarn:1 dfail:0 fail:0 skip:26 time:557s
fi-skl-6770hq total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:507s
fi-skl-gvtdvm total:288 pass:265 dwarn:0 dfail:0 fail:0 skip:23 time:448s
fi-snb-2520m total:288 pass:248 dwarn:0 dfail:0 fail:0 skip:40 time:556s
fi-snb-2600 total:288 pass:248 dwarn:0 dfail:0 fail:0 skip:40 time:414s
Blacklisted hosts:
fi-cfl-s2 total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:588s
fi-cnl-y total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:624s
fi-glk-dsi total:288 pass:257 dwarn:0 dfail:0 fail:1 skip:30 time:489s
fi-skl-6700k2 total:288 pass:264 dwarn:0 dfail:0 fail:0 skip:24 time:509s
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_688/issues.html
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^ permalink raw reply [flat|nested] 6+ messages in thread
* ✓ Fi.CI.IGT: success for tests/gem_ctx_param: Update invalid param
2017-12-15 19:01 [PATCH i-g-t] tests/gem_ctx_param: Update invalid param Antonio Argenziano
2017-12-15 19:38 ` ✓ Fi.CI.BAT: success for " Patchwork
@ 2017-12-15 22:40 ` Patchwork
2017-12-16 0:14 ` [PATCH i-g-t] " Chris Wilson
2 siblings, 0 replies; 6+ messages in thread
From: Patchwork @ 2017-12-15 22:40 UTC (permalink / raw)
To: Antonio Argenziano; +Cc: intel-gfx
== Series Details ==
Series: tests/gem_ctx_param: Update invalid param
URL : https://patchwork.freedesktop.org/series/35438/
State : success
== Summary ==
Warning: bzip CI_DRM_3524/shard-glkb6/results10.json.bz2 wasn't in correct JSON format
Test gem_ctx_param:
Subgroup invalid-param-set:
fail -> PASS (shard-snb) fdo#103107 +3
Test kms_setmode:
Subgroup basic:
pass -> FAIL (shard-hsw) fdo#99912
Test gem_eio:
Subgroup in-flight-contexts:
pass -> DMESG-WARN (shard-snb) fdo#104058
Test drv_module_reload:
Subgroup basic-reload-inject:
pass -> DMESG-WARN (shard-snb) fdo#102707 +1
Test pm_rc6_residency:
Subgroup rc6-accuracy:
skip -> PASS (shard-snb)
Test kms_frontbuffer_tracking:
Subgroup fbc-1p-offscren-pri-shrfb-draw-render:
fail -> PASS (shard-snb) fdo#101623 +1
Test perf:
Subgroup blocking:
pass -> FAIL (shard-hsw) fdo#102252
Test kms_flip:
Subgroup dpms-vs-vblank-race:
fail -> PASS (shard-hsw) fdo#103060
Test gem_softpin:
Subgroup noreloc-s3:
skip -> PASS (shard-snb) fdo#102365
skip -> PASS (shard-hsw) fdo#103540
Test drv_selftest:
Subgroup live_hangcheck:
pass -> INCOMPLETE (shard-snb) fdo#103880
fdo#103107 https://bugs.freedesktop.org/show_bug.cgi?id=103107
fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912
fdo#104058 https://bugs.freedesktop.org/show_bug.cgi?id=104058
fdo#102707 https://bugs.freedesktop.org/show_bug.cgi?id=102707
fdo#101623 https://bugs.freedesktop.org/show_bug.cgi?id=101623
fdo#102252 https://bugs.freedesktop.org/show_bug.cgi?id=102252
fdo#103060 https://bugs.freedesktop.org/show_bug.cgi?id=103060
fdo#102365 https://bugs.freedesktop.org/show_bug.cgi?id=102365
fdo#103540 https://bugs.freedesktop.org/show_bug.cgi?id=103540
fdo#103880 https://bugs.freedesktop.org/show_bug.cgi?id=103880
shard-hsw total:2700 pass:1529 dwarn:2 dfail:0 fail:13 skip:1155 time:9349s
shard-snb total:2698 pass:1290 dwarn:3 dfail:0 fail:14 skip:1390 time:7969s
Blacklisted hosts:
shard-kbl total:2676 pass:1772 dwarn:5 dfail:0 fail:27 skip:871 time:10795s
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_688/shards.html
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH i-g-t] tests/gem_ctx_param: Update invalid param
2017-12-15 19:01 [PATCH i-g-t] tests/gem_ctx_param: Update invalid param Antonio Argenziano
2017-12-15 19:38 ` ✓ Fi.CI.BAT: success for " Patchwork
2017-12-15 22:40 ` ✓ Fi.CI.IGT: " Patchwork
@ 2017-12-16 0:14 ` Chris Wilson
2017-12-18 18:15 ` Antonio Argenziano
2 siblings, 1 reply; 6+ messages in thread
From: Chris Wilson @ 2017-12-16 0:14 UTC (permalink / raw)
To: Antonio Argenziano, intel-gfx
Quoting Antonio Argenziano (2017-12-15 19:01:11)
> Since commit: drm/i915/scheduler: Support user-defined priorities, the
> driver support an extra context param to set context's priority. Add
> tests for that interface and update invalid tests.
>
> Signed-off-by: Antonio Argenziano <antonio.argenziano@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Michal Winiarski <michal.winiarski@intel.com>
> ---
> tests/gem_ctx_param.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 76 insertions(+), 1 deletion(-)
>
> diff --git a/tests/gem_ctx_param.c b/tests/gem_ctx_param.c
> index c20ae1ee..9a222e60 100644
> --- a/tests/gem_ctx_param.c
> +++ b/tests/gem_ctx_param.c
> @@ -25,6 +25,7 @@
> */
>
> #include "igt.h"
> +#include <limits.h>
>
> IGT_TEST_DESCRIPTION("Basic test for context set/get param input validation.");
>
> @@ -136,11 +137,85 @@ igt_main
> gem_context_set_param(fd, &arg);
> }
>
> +#define MAX_PRIO 1023
> +#define MIN_PRIO -MAX_PRIO
> +#define DEF_PRIO 0
Take these from the uapi header.
> +
> + arg.param = I915_CONTEXT_PARAM_PRIORITY;
> +
> + igt_subtest("root-set-priority") {
> + arg.ctx_id = ctx;
> + arg.size = 0;
> +
Bonus points for CAP_SYS_NICE checking.
arg.size validation checking.
arg.value > u32 (checking for overflows)
gem_context_get_param() of a new context should return DEF_PRIO
set_param on older machines returns -ENODEV
And that's not even trying to fuzz bad values beyond the sanity checks
of I915_CONTEXT_PARAM_PRIORITY.
> + for (int i = MIN_PRIO; i <= MAX_PRIO; i += 1023) {
It's a couple of ioctls, do all 1024. Do them in a random order, trust
no one.
> + arg.value = i;
> + gem_context_set_param(fd, &arg);
> +
> + gem_context_get_param(fd, &arg);
> + igt_assert(arg.value == i); /* Verify prio was set */
igt_assert_eq(arg.value, i);
But doesn't verify the priority does anything. Just the RTT in the API,
which is a nice verification nevertheless.
> + }
> + }
> +
> + igt_subtest("root-set-priority-invalid-value") {
> + int prio_levels[] = {INT_MIN, MIN_PRIO - 1, MAX_PRIO + 1, INT_MAX};
> + int old_value;
> + arg.ctx_id = ctx;
> +
> + gem_context_get_param(fd, &arg);
> + old_value = arg.value;
> +
> + for (int i = 0; i < (sizeof(prio_levels) / sizeof(int)); i++) {
ARRAY_SIZE(prio_levels);
> + arg.value = prio_levels[i];
> + igt_assert_eq(__gem_context_set_param(fd, &arg), -EINVAL);
> +
> + gem_context_get_param(fd, &arg);
> + igt_assert(arg.value == old_value); /* Verify prio was not set */
> + }
> + }
> +
> + igt_subtest("user-set-priority") {
> + arg.size = 0;
> +
> + igt_fork(child, 1) {
> + igt_drop_root();
> + for (int i = MIN_PRIO; i <= DEF_PRIO; i += 1023) {
> + arg.value = i;
> + gem_context_set_param(fd, &arg);
> +
> + gem_context_get_param(fd, &arg);
> + igt_assert(arg.value == i); /* Verify prio was set */
I wonder if the CAP_SYS_NICE limit might be adjusted in the future.
Certainly preemption rules are flexible, as we haven't told anyone about
them yet.
-Chris
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH i-g-t] tests/gem_ctx_param: Update invalid param
2017-12-16 0:14 ` [PATCH i-g-t] " Chris Wilson
@ 2017-12-18 18:15 ` Antonio Argenziano
2017-12-18 20:56 ` Chris Wilson
0 siblings, 1 reply; 6+ messages in thread
From: Antonio Argenziano @ 2017-12-18 18:15 UTC (permalink / raw)
To: Chris Wilson, intel-gfx
On 15/12/17 16:14, Chris Wilson wrote:
> Quoting Antonio Argenziano (2017-12-15 19:01:11)
>> Since commit: drm/i915/scheduler: Support user-defined priorities, the
>> driver support an extra context param to set context's priority. Add
>> tests for that interface and update invalid tests.
>>
>> Signed-off-by: Antonio Argenziano <antonio.argenziano@intel.com>
>> Cc: Chris Wilson <chris@chris-wilson.co.uk>
>> Cc: Michal Winiarski <michal.winiarski@intel.com>
>> ---
>> tests/gem_ctx_param.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++-
>> 1 file changed, 76 insertions(+), 1 deletion(-)
>>
>> diff --git a/tests/gem_ctx_param.c b/tests/gem_ctx_param.c
>> index c20ae1ee..9a222e60 100644
>> --- a/tests/gem_ctx_param.c
>> +++ b/tests/gem_ctx_param.c
>> @@ -25,6 +25,7 @@
>> */
>>
>> #include "igt.h"
>> +#include <limits.h>
>>
>> IGT_TEST_DESCRIPTION("Basic test for context set/get param input validation.");
>>
>> @@ -136,11 +137,85 @@ igt_main
>> gem_context_set_param(fd, &arg);
>> }
>>
>> +#define MAX_PRIO 1023
>> +#define MIN_PRIO -MAX_PRIO
>> +#define DEF_PRIO 0
>
> Take these from the uapi header.
>
>> +
>> + arg.param = I915_CONTEXT_PARAM_PRIORITY;
>> +
>> + igt_subtest("root-set-priority") {
>> + arg.ctx_id = ctx;
>> + arg.size = 0;
>> +
>
> Bonus points for CAP_SYS_NICE checking.
>
> arg.size validation checking. > arg.value > u32 (checking for overflows)
What is the expectation for overflows? It looks like we only cast value
to int.
>
> gem_context_get_param() of a new context should return DEF_PRIO
>
> set_param on older machines returns -ENODEV
>
> And that's not even trying to fuzz bad values beyond the sanity checks
> of I915_CONTEXT_PARAM_PRIORITY.
>
>> + for (int i = MIN_PRIO; i <= MAX_PRIO; i += 1023) {
>
> It's a couple of ioctls, do all 1024. Do them in a random order, trust
> no one.
Do we have a lib for doing that (generate a random permutation) already?
>
>> + arg.value = i;
>> + gem_context_set_param(fd, &arg);
>> +
>> + gem_context_get_param(fd, &arg);
>> + igt_assert(arg.value == i); /* Verify prio was set */
>
> igt_assert_eq(arg.value, i);
>
> But doesn't verify the priority does anything. Just the RTT in the API,
> which is a nice verification nevertheless.
>
>> + }
>> + }
>> +
>> + igt_subtest("root-set-priority-invalid-value") {
>> + int prio_levels[] = {INT_MIN, MIN_PRIO - 1, MAX_PRIO + 1, INT_MAX};
>> + int old_value;
>> + arg.ctx_id = ctx;
>> +
>> + gem_context_get_param(fd, &arg);
>> + old_value = arg.value;
>> +
>> + for (int i = 0; i < (sizeof(prio_levels) / sizeof(int)); i++) {
>
> ARRAY_SIZE(prio_levels);
>
>> + arg.value = prio_levels[i];
>> + igt_assert_eq(__gem_context_set_param(fd, &arg), -EINVAL);
>> +
>> + gem_context_get_param(fd, &arg);
>> + igt_assert(arg.value == old_value); /* Verify prio was not set */
>> + }
>> + }
>> +
>> + igt_subtest("user-set-priority") {
>> + arg.size = 0;
>> +
>> + igt_fork(child, 1) {
>> + igt_drop_root();
>> + for (int i = MIN_PRIO; i <= DEF_PRIO; i += 1023) {
>> + arg.value = i;
>> + gem_context_set_param(fd, &arg);
>> +
>> + gem_context_get_param(fd, &arg);
>> + igt_assert(arg.value == i); /* Verify prio was set */
>
> I wonder if the CAP_SYS_NICE limit might be adjusted in the future.
> Certainly preemption rules are flexible, as we haven't told anyone about
> them yet.
I guess when the change comes we will have a new constant we could swap
DEF_PRIO with.
-Antonio
> -Chris
>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH i-g-t] tests/gem_ctx_param: Update invalid param
2017-12-18 18:15 ` Antonio Argenziano
@ 2017-12-18 20:56 ` Chris Wilson
0 siblings, 0 replies; 6+ messages in thread
From: Chris Wilson @ 2017-12-18 20:56 UTC (permalink / raw)
To: Antonio Argenziano, intel-gfx
Quoting Antonio Argenziano (2017-12-18 18:15:35)
>
>
> On 15/12/17 16:14, Chris Wilson wrote:
> > Quoting Antonio Argenziano (2017-12-15 19:01:11)
> >> + arg.param = I915_CONTEXT_PARAM_PRIORITY;
> >> +
> >> + igt_subtest("root-set-priority") {
> >> + arg.ctx_id = ctx;
> >> + arg.size = 0;
> >> +
> >
> > Bonus points for CAP_SYS_NICE checking.
> >
> > arg.size validation checking. > arg.value > u32 (checking for overflows)
>
> What is the expectation for overflows? It looks like we only cast value
> to int.
That was my point. We could create 1<<32 + prio, so we really should be
failing with -EINVAL rather than setting the parameter to prio. Trust
nothing, least of all the kernel.
> > gem_context_get_param() of a new context should return DEF_PRIO
> >
> > set_param on older machines returns -ENODEV
> >
> > And that's not even trying to fuzz bad values beyond the sanity checks
> > of I915_CONTEXT_PARAM_PRIORITY.
> >
> >> + for (int i = MIN_PRIO; i <= MAX_PRIO; i += 1023) {
> >
> > It's a couple of ioctls, do all 1024. Do them in a random order, trust
> > no one.
>
> Do we have a lib for doing that (generate a random permutation) already?
See igt_permute_array. Maybe igt_random_array(count, prng_state).
> >> + arg.value = prio_levels[i];
> >> + igt_assert_eq(__gem_context_set_param(fd, &arg), -EINVAL);
> >> +
> >> + gem_context_get_param(fd, &arg);
> >> + igt_assert(arg.value == old_value); /* Verify prio was not set */
> >> + }
> >> + }
> >> +
> >> + igt_subtest("user-set-priority") {
> >> + arg.size = 0;
> >> +
> >> + igt_fork(child, 1) {
> >> + igt_drop_root();
> >> + for (int i = MIN_PRIO; i <= DEF_PRIO; i += 1023) {
> >> + arg.value = i;
> >> + gem_context_set_param(fd, &arg);
> >> +
> >> + gem_context_get_param(fd, &arg);
> >> + igt_assert(arg.value == i); /* Verify prio was set */
> >
> > I wonder if the CAP_SYS_NICE limit might be adjusted in the future.
> > Certainly preemption rules are flexible, as we haven't told anyone about
> > them yet.
>
> I guess when the change comes we will have a new constant we could swap
> DEF_PRIO with.
The question is whether it is ABI, as it may be changed. If its not,
don't enshrine it into law.
-Chris
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-12-18 20:56 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-12-15 19:01 [PATCH i-g-t] tests/gem_ctx_param: Update invalid param Antonio Argenziano
2017-12-15 19:38 ` ✓ Fi.CI.BAT: success for " Patchwork
2017-12-15 22:40 ` ✓ Fi.CI.IGT: " Patchwork
2017-12-16 0:14 ` [PATCH i-g-t] " Chris Wilson
2017-12-18 18:15 ` Antonio Argenziano
2017-12-18 20:56 ` Chris Wilson
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