> So I implemented a new function called
> copyin_futex(9), which is all we really need.
But it is not specific to futex - in fact, it could be used in syscall()
as well.
Better call it fuword() or aligned_fuword() since it has the extra
alignment requirement that fuword
Only copy the console buffer contents to a rasops virtual console if
it's the first one (visible).
Otherwise all of the other virtual consoles initialize with the
trailing end of the kernel messages and then getty writes over them,
like this: https://imgur.com/a/mAXKf
Index: dev/rasops/rasops.c
OK, I was indeed missing something. Thanks, Theo and Mike.
I think I see another very minor problem, though.
Let the pf BW be 9,999,999.
Shift right 3 digits (divide by 1000) : yields 9,999K.
(If we were doing floating point arithmetic, would yield 9,999.999K.)
You (Mike) don't round this, presuma
On Sun, May 14, 2017 at 20:29 +, Carl Mascott wrote:
> It looks to me like you are rounding on each iteration of the for-loop:
>
> +for (i = 0; rate > && i <= 3; i++) {
> +rtmp = rate / 1000;
> +if (rtmp < )
> +rtmp += (rate % 1000) / 500;
> +ra
On Sun, May 14, 2017 at 08:29:18PM +, Carl Mascott wrote:
> It looks to me like you are rounding on each iteration of the for-loop:
>
> +for (i = 0; rate > && i <= 3; i++) {
> +rtmp = rate / 1000;
> +if (rtmp < )
This is only true in the last iteration.
> +
It looks to me like you are rounding on each iteration of the for-loop:
+for (i = 0; rate > && i <= 3; i++) {
+rtmp = rate / 1000;
+if (rtmp < )
+rtmp += (rate % 1000) / 500;
+rate = rtmp;
+}
Am I missing something?
I'll post my patch on Tuesd
On Sun, May 14, 2017 at 19:48 +, Carl Mascott wrote:
> I have a suggestion RE your pftop.c patch. You are rounding
> multiple times, after each scale operation. This is known as
> rounding the intermediate results of a calculation and degrades
> accuracy. If you're not familiar with the issu
> Date: Fri, 12 May 2017 13:34:38 +
> From: Visa Hankala
>
> On Mon, May 01, 2017 at 06:02:24PM +0200, Mark Kettenis wrote:
> > The futex(2) syscall needs to be able to atomically copy the futex in
> > and out of userland. The current implementation uses copyin(9) and
> > copyout(9) for that
I have a suggestion RE your pftop.c patch.
You are rounding multiple times, after each scale operation.
This is known as rounding the intermediate results of a calculation and
degrades accuracy.
If you're not familiar with the issue do a Google search on rounding
intermediate.
I suggest assignin
On Sun, May 14, 2017 at 02:02:39AM +0200, Mike Belopuhov wrote:
> Good call. This one is a bit more complicated since we have 5 positions
> to display and the last one is sort of reserved for the unit specifier.
>
> So ignoring the unit we can display numbers from 1 to .
> However, when trunc
On Sat, May 13, 2017 at 12:52:04PM -0400, mar...@martinbrandenburg.com wrote:
> printcap(5) says:
>
> NameTypeDefault Description
> sd str /var/spool/outputspool directory
>
> However as far as I can tell, the actual default is
> /var/spool/output/lpd.
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