Fwd: [RFC] Kernel shared variables

[Giovanni Trematerra]

On Mon, Jun 4, 2012 at 8:19 PM, Konstantin Belousov <kostikbel at gmail.com> wrote:
> On Mon, Jun 04, 2012 at 11:01:57AM -0400, John Baldwin wrote:
>> On Sunday, June 03, 2012 6:49:27 am Bruce Evans wrote:
>> > On Sun, 3 Jun 2012, Konstantin Belousov wrote:

>> I think duplicating this logic in userland would just be wasteful.  I have
>> a private fast gettimeofday() at my current job and it works by exporting
>> the current timehands structure (well, the equivalent) to userland.  The
>> userland bits then fetch a copy of the details and do the same as bintime().
>> (I move the math (bintime_addx() and the multiply)) out of the loop however.
> I started yesterday an implementation which uses shared page to export
> some variant of timehands, and uses auxv to provide the libc with a pointer
> to timehands when rdtsc is reasonable.
>
> I almost finished both 32bit and 64bit userspace, but there is
> kernel-side work left. Is your implementation ready or close to be ready
> for commit ? In other words, should I drop the efforts, or continue ?
>

Hey wait, What are you doing?
This is completely unfair. You didn't even review my patch.
I really don't understand your way to completely ignore me and start implement
yesterday something you didn't care about for more than 3 years.
It costs me a lot of time and energy and I think I deserve more respect that
just be ignored.

--
Gianni