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

On Thu, 16 Aug 2007, Paul Mackerras wrote:

> 
> It seems that there could be a lot of places where atomic_t is used in
> a non-atomic fashion, and that those uses are either buggy, or there
> is some lock held at the time which guarantees that other CPUs aren't
> changing the value.  In both cases there is no point in using
> atomic_t; we might as well just use an ordinary int.

The point of atomic_t is to do atomic *changes* to the variable.
-
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:
  • 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: Paul Mackerras <[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: "Paul E. McKenney" <[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: "Paul E. McKenney" <[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: "Paul E. McKenney" <[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: Herbert Xu <[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: Paul Mackerras <[email protected]>

• Prev by Date: Re: [PATCH take #5] [libata] libata driver for bf548 on chip ATAPI controller.
• Next by Date: Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
• 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]