Re: [patch 3/7] epoll keyed wakeups - introduce key-aware wakeupmacros

From: Ingo Molnar
Date: Sat Jan 31 2009 - 08:07:29 EST



* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Sat, 31 Jan 2009, Ingo Molnar wrote:
> >
> > Would be nice to see the kernel image size increase due to this change
> > (which gives a good measure about how much of an issue this is).
>
> Ingo, I don't think you have looked at that header file for a while.
>
> It's already doing that, Davide just changed the names a bit:
>
> #define wake_up_interruptible(x) __wake_up(x, TASK_INTERRUPTIBLE, 1, NULL)
>
> and the extra parameter is already there in the caller.

Yeah, indeed - i should have noticed the absense of new function
prototypes in the patch ... and in any case i shouldnt post at 4am ;)

> (Yeah, Davide did add it to __wake_up_locked and __wake_up_sync, but
> those are really not the common cases).
>
> Sure, we can change those #define's to be actual functions (and perhaps
> not export the low-level __wake_up() functions at all), since it's true
> that it would probably shrink the kernel size, but that is really a
> totally independent issue from the whole epoll wakeups thing.

Yeah. Will have a look at that independently of Davide's patch.

Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/