On Thu, 2005-07-14 at 23:37 +0100, Alan Cox wrote:
> In actual fact you also want to fix users of
>
> while(time_before(foo, jiffies)) { whack(mole); }
>
> to become
>
> init_timeout(&timeout);
> timeout.expires = jiffies + n
> add_timeout(&timeout);
> while(!timeout_expired(&timeout)) {}
>
> Which is a trivial wrapper around timers as we have them now
Or something like this:
struct timeout_timer {
unsigned long expires;
};
static inline void timeout_set(struct timeout_timer *timer,
unsigned int msecs)
{
timer->expires = jiffies + msecs_to_jiffies(msecs);
}
static inline int timeout_expired(struct timeout_timer *timer)
{
return (time_after(jiffies, timer->expires));
}
It provides a nice API for relative timeouts without adding overhead.
- Eric St-Laurent
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- References:
- Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
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- Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
- From: Lee Revell <[email protected]>
- Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
- From: Andrew Morton <[email protected]>
- Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
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- Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
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- Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt
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