Re: [PATCH] (2/4) packet scheduler bad TDIFF_SAFE in csz

[Stephen Hemminger <shemminger@xxxxxxxx>]

On 29 Jun 2004 18:43:45 -0400
jamal <hadi@xxxxxxxxxx> wrote:

> 
> Sounds like good logic to me.
> BTW, that jiffies fix, statemnt from Steve:
> > The downside is the overhead of a function call, and a cache miss in >
> >get_jiffies_64.
> 
> Is this overhead on 32 bit machines or applies on 64 bit as well?
> Note that code is used in the fast path.

jiffies.h

#if (BITS_PER_LONG < 64)
u64 get_jiffies_64(void);
#else
static inline u64 get_jiffies_64(void)
{
        return (u64)jiffies;
}
#endif