RE: Question on atomic_inc/dec

[Perez-Gonzalez, Inaky]

> From: sankar [mailto:san_madhav@xxxxxxxxxxx]

>  any solution to the original problem???
> (atomic_inc() defintion not there in redhat 9.0 asm/atomic.h)

Create an atomic.h header file in your source tree with the code
below, but bear in mind that porting to other arches might be painful:

struct atomic
{
  volatile int i;
}

  /* Simple atomic increment. */

static inline
void atomic_inc (struct atomic *a)
{
    asm volatile (
      "lock; incl %0"
      : "=m" (a->i)
      : "m" (a->i));
}

  /* Simple atomic decrement. */

static inline
void atomic_dec (struct atomic *a)
{
    asm volatile (
      "lock; decl %0"
      : "=m" (a->i)
      : "m" (a->i));
}

Iñaky Pérez-González -- Not speaking for Intel -- all opinions are my own (and my fault)

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