[lkml]   [2005]   [Feb]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] arp_queue: serializing unlink + kfree_skb
On Thu, Feb 10, 2005 at 01:23:04AM -0300, Werner Almesberger wrote:
> What happens if the operation could return a value, but the user
> ignores it ? E.g. if I don't like smp_mb__*, could I just use
> atomic_inc_and_test(foo);
> instead of
> smp_mb__before_atomic_inc();
> atomic_inc(foo);
> smp_mb__after_atomic_dec();

Yes you can.

> ? If yes, is this a good idea ?

Dave mentioned that on sparc64, atomic_inc_and_test is much more
expensive than the second variant.

Visit Openswan at
Email: Herbert Xu ~{PmV>HI~} <>
Home Page:
PGP Key:
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:10    [W:0.051 / U:4.036 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site