From: David Herrmann <dh.herrmann@gmail.com>
To: Chris Wilson <chris@chris-wilson.co.uk>,
David Herrmann <dh.herrmann@gmail.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
joonas.lahtinen@linux.intel.com
Subject: Re: [PATCH 06/34] drm: Add a simple linear congruent generator PRNG
Date: Tue, 13 Dec 2016 17:21:57 +0100 [thread overview]
Message-ID: <CANq1E4RJzCD_j7renExKj8gZOsD--tEOvf-BRanffXQ7dpjfaQ@mail.gmail.com> (raw)
In-Reply-To: <20161213154054.GT20316@nuc-i3427.alporthouse.com>
Hey Chris
On Tue, Dec 13, 2016 at 4:40 PM, Chris Wilson <chris@chris-wilson.co.uk> wrote:
> On Tue, Dec 13, 2016 at 04:18:35PM +0100, David Herrmann wrote:
>> On Tue, Dec 13, 2016 at 4:16 PM, David Herrmann <dh.herrmann@gmail.com> wrote:
>> > On Mon, Dec 12, 2016 at 12:53 PM, Chris Wilson <chris@chris-wilson.co.uk> wrote:
>> > for (i = 0; i < count; ++i)
>> > swap(order[i], order[drm_lcg_random(state) % count]);
>> >
>> > Much simpler and I cannot see why it wouldn't work.
>>
>> Hint: swap() does multiple evaluations. So this needs to be:
>
> Hmm, and on switching to size_t count may be larger than u32...
I didn't mean to suggest 'size_t'. All I cared about was 'unsigned'.
So feel free to use 'u32', 'unsigned int', 'size_t', etc.
Thanks
David
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next prev parent reply other threads:[~2016-12-13 16:21 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-12 11:53 struct drm_mm fixes Chris Wilson
2016-12-12 11:53 ` [PATCH 01/34] drm/i915: Use the MRU stack search after evicting Chris Wilson
2016-12-13 9:29 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 02/34] drm/i915: Simplify i915_gtt_color_adjust() Chris Wilson
2016-12-13 9:32 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 03/34] drm: Add drm_mm_for_each_node_safe() Chris Wilson
2016-12-13 9:35 ` Joonas Lahtinen
2016-12-14 11:39 ` Chris Wilson
2016-12-14 12:03 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 04/34] drm: Add some kselftests for the DRM range manager (struct drm_mm) Chris Wilson
2016-12-13 9:58 ` Joonas Lahtinen
2016-12-13 10:21 ` Chris Wilson
2016-12-13 15:03 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 05/34] drm: kselftest for drm_mm_init() Chris Wilson
2016-12-13 10:16 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 06/34] drm: Add a simple linear congruent generator PRNG Chris Wilson
2016-12-13 10:44 ` Joonas Lahtinen
2016-12-13 15:16 ` David Herrmann
2016-12-13 15:18 ` David Herrmann
2016-12-13 15:40 ` Chris Wilson
2016-12-13 16:21 ` David Herrmann [this message]
2016-12-13 15:26 ` Chris Wilson
2016-12-13 19:39 ` Laurent Pinchart
2016-12-13 20:50 ` Chris Wilson
2016-12-12 11:53 ` [PATCH 07/34] drm: Add a simple prime number generator Chris Wilson
2016-12-12 11:53 ` [PATCH 08/34] drm: kselftest for drm_mm_reserve_node() Chris Wilson
2016-12-14 9:55 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 09/34] drm: kselftest for drm_mm_insert_node() Chris Wilson
2016-12-14 12:26 ` Joonas Lahtinen
2016-12-14 12:51 ` Chris Wilson
2016-12-12 11:53 ` [PATCH 10/34] drm: kselftest for drm_mm_replace_node() Chris Wilson
2016-12-14 12:01 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 11/34] drm: kselftest for drm_mm_insert_node_in_range() Chris Wilson
2016-12-15 8:43 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 12/34] drm: kselftest for drm_mm and alignment Chris Wilson
2016-12-15 8:59 ` Joonas Lahtinen
2016-12-15 9:21 ` Chris Wilson
2016-12-12 11:53 ` [PATCH 13/34] drm: kselftest for drm_mm and eviction Chris Wilson
2016-12-15 9:29 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 14/34] drm: kselftest for drm_mm and range restricted eviction Chris Wilson
2016-12-15 9:50 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 15/34] drm: kselftest for drm_mm and top-down allocation Chris Wilson
2016-12-14 11:33 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 16/34] drm: kselftest for drm_mm and top-down alignment Chris Wilson
2016-12-14 11:51 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 17/34] drm: kselftest for drm_mm and color adjustment Chris Wilson
2016-12-15 11:04 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 18/34] drm: kselftest for drm_mm and color eviction Chris Wilson
2016-12-12 11:53 ` [PATCH 19/34] drm: kselftest for drm_mm and restricted " Chris Wilson
2016-12-12 11:53 ` [PATCH 20/34] drm/i915: Build DRM range manager selftests for CI Chris Wilson
2016-12-15 12:31 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 21/34] drm: Promote drm_mm alignment to u64 Chris Wilson
2016-12-12 12:39 ` Christian König
2016-12-12 11:53 ` [PATCH 22/34] drm: Constify the drm_mm API Chris Wilson
2016-12-12 11:53 ` [PATCH 23/34] drm: Simplify drm_mm_clean() Chris Wilson
2016-12-13 12:30 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 24/34] drm: Compile time enabling for asserts in drm_mm Chris Wilson
2016-12-13 15:04 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 25/34] drm: Extract struct drm_mm_scan from struct drm_mm Chris Wilson
2016-12-13 15:17 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 26/34] drm: Rename prev_node to hole in drm_mm_scan_add_block() Chris Wilson
2016-12-13 15:23 ` Joonas Lahtinen
2016-12-13 22:28 ` Chris Wilson
2016-12-12 11:53 ` [PATCH 27/34] drm: Unconditionally do the range check " Chris Wilson
2016-12-13 15:28 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 28/34] drm: Fix application of color vs range restriction when scanning drm_mm Chris Wilson
2016-12-12 14:57 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 29/34] drm: Compute tight evictions for drm_mm_scan Chris Wilson
2016-12-13 15:48 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 30/34] drm: Optimise power-of-two alignments in drm_mm_scan_add_block() Chris Wilson
2016-12-13 15:55 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 31/34] drm: Simplify drm_mm scan-list manipulation Chris Wilson
2016-12-14 8:27 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 32/34] drm: Apply tight eviction scanning to color_adjust Chris Wilson
2016-12-13 16:03 ` Joonas Lahtinen
2016-12-12 11:53 ` [PATCH 33/34] drm: Fix drm_mm search and insertion Chris Wilson
2016-12-15 12:28 ` Joonas Lahtinen
2016-12-15 12:57 ` Chris Wilson
2016-12-12 11:53 ` [PATCH 34/34] drm: kselftest for drm_mm and bottom-up allocation Chris Wilson
2016-12-14 9:10 ` Joonas Lahtinen
2016-12-12 12:15 ` ✓ Fi.CI.BAT: success for series starting with [01/34] drm/i915: Use the MRU stack search after evicting Patchwork
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