From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Subject: [Intel-gfx] [PATCH 2/4] drm/i915/selftests: Change priority overflow detection
Date: Tue, 19 May 2020 00:14:05 +0100 [thread overview]
Message-ID: <20200518231407.6837-2-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <20200518231407.6837-1-chris@chris-wilson.co.uk>
Check for integer overflow in the priority chain, rather than against a
type-constricted max-priority check.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gt/selftest_lrc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index 97447de92843..f128744ab09b 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -2735,12 +2735,12 @@ static int live_preempt_gang(void *arg)
/* Submit each spinner at increasing priority */
engine->schedule(rq, &attr);
+ if (prio < attr.priority)
+ break;
+
if (prio <= I915_PRIORITY_MAX)
continue;
- if (prio > (INT_MAX >> I915_USER_PRIORITY_SHIFT))
- break;
-
if (__igt_timeout(end_time, NULL))
break;
} while (1);
--
2.20.1
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next prev parent reply other threads:[~2020-05-18 23:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 23:14 [Intel-gfx] [PATCH 1/4] drm/i915: Don't set queue-priority hint when supressing the reschedule Chris Wilson
2020-05-18 23:14 ` Chris Wilson [this message]
2020-05-18 23:14 ` [Intel-gfx] [PATCH 3/4] drm/i915/selftests: Restore to default heartbeat Chris Wilson
2020-05-18 23:14 ` [Intel-gfx] [PATCH 4/4] drm/i915/selftests: Check for an initial-breadcrumb in wait_for_submit() Chris Wilson
2020-05-18 23:33 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/4] drm/i915: Don't set queue-priority hint when supressing the reschedule Patchwork
2020-05-18 23:34 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-05-18 23:55 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-05-19 1:39 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
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