Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures

On Wed, Aug 15, 2007 at 12:35:31PM +0200, Stefan Richter wrote:
> 
> LDD3 says on page 125:  "The following operations are defined for the
> type [atomic_t] and are guaranteed to be atomic with respect to all
> processors of an SMP computer."
> 
> Doesn't "atomic WRT all processors" require volatility?

Not at all.  We also require this to be atomic without any
hint of volatility.

	extern int foo;
	foo = 4;

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• References:
  • [PATCH 0/24] make atomic_read() behave consistently across all architectures
    • From: Chris Snook <[email protected]>
  • Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
    • From: Satyam Sharma <[email protected]>
  • Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
    • From: Stefan Richter <[email protected]>

• Prev by Date: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
• Next by Date: [PATCH] Documentation: fix getdelays.c printf bug
• Previous by thread: Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
• Next by thread: Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]