Re: why are some atomic_t's not volatile, while most are?

Jerry Jiang
2007-08-06T04:57:19Z

Is there some feedback on this point ?

Thank you
./Jerry

On Sun, 1 Jul 2007 08:49:37 -0400 (EDT)
"Robert P. J. Day" <rpjday@mindspring.com> wrote:

>
> prompted by the earlier post on "volatile"s, is there a reason that
> most atomic_t typedefs use volatile int's, while the rest don't?
>
> $ grep "typedef.*struct" $(find . -name atomic.h)
> ./include/asm-v850/atomic.h:typedef struct { int counter; } atomic_t;
> ./include/asm-mips/atomic.h:typedef struct { volatile int counter; } atomic_t;
> ./include/asm-mips/atomic.h:typedef struct { volatile long counter; } atomic64_t;
> ...
>
> etc, etc. just curious.
>
> rday
> --
> ========================================================================
> Robert P. J. Day
> Linux Consulting, Training and Annoying Kernel Pedantry
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