5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 364,374 ****
          mutex_exit(&xnfp->xnf_gref_lock);
  
          if (gref == INVALID_GRANT_REF) {
                  xnfp->xnf_stat_gref_failure++;
          } else {
!                 atomic_add_64(&xnfp->xnf_stat_gref_outstanding, 1);
                  if (xnfp->xnf_stat_gref_outstanding > xnfp->xnf_stat_gref_peak)
                          xnfp->xnf_stat_gref_peak =
                              xnfp->xnf_stat_gref_outstanding;
          }
  
--- 364,374 ----
          mutex_exit(&xnfp->xnf_gref_lock);
  
          if (gref == INVALID_GRANT_REF) {
                  xnfp->xnf_stat_gref_failure++;
          } else {
!                 atomic_inc_64(&xnfp->xnf_stat_gref_outstanding);
                  if (xnfp->xnf_stat_gref_outstanding > xnfp->xnf_stat_gref_peak)
                          xnfp->xnf_stat_gref_peak =
                              xnfp->xnf_stat_gref_outstanding;
          }
  
*** 385,395 ****
  
          mutex_enter(&xnfp->xnf_gref_lock);
          gnttab_release_grant_reference(&xnfp->xnf_gref_head, gref);
          mutex_exit(&xnfp->xnf_gref_lock);
  
!         atomic_add_64(&xnfp->xnf_stat_gref_outstanding, -1);
  }
  
  /*
   * Acquire a transmit id.
   */
--- 385,395 ----
  
          mutex_enter(&xnfp->xnf_gref_lock);
          gnttab_release_grant_reference(&xnfp->xnf_gref_head, gref);
          mutex_exit(&xnfp->xnf_gref_lock);
  
!         atomic_dec_64(&xnfp->xnf_stat_gref_outstanding);
  }
  
  /*
   * Acquire a transmit id.
   */
*** 2350,2360 ****
          bdesc->buf_mfn = pfn_to_mfn(xnf_btop(bdesc->buf_phys));
          bdesc->len = dma_cookie.dmac_size;
          bdesc->grant_ref = INVALID_GRANT_REF;
          bdesc->gen = xnfp->xnf_gen;
  
!         atomic_add_64(&xnfp->xnf_stat_buf_allocated, 1);
  
          return (0);
  
  failure_2:
          ddi_dma_mem_free(&bdesc->acc_handle);
--- 2350,2360 ----
          bdesc->buf_mfn = pfn_to_mfn(xnf_btop(bdesc->buf_phys));
          bdesc->len = dma_cookie.dmac_size;
          bdesc->grant_ref = INVALID_GRANT_REF;
          bdesc->gen = xnfp->xnf_gen;
  
!         atomic_inc_64(&xnfp->xnf_stat_buf_allocated);
  
          return (0);
  
  failure_2:
          ddi_dma_mem_free(&bdesc->acc_handle);
*** 2376,2386 ****
  
          (void) ddi_dma_unbind_handle(bdesc->dma_handle);
          ddi_dma_mem_free(&bdesc->acc_handle);
          ddi_dma_free_handle(&bdesc->dma_handle);
  
!         atomic_add_64(&xnfp->xnf_stat_buf_allocated, -1);
  }
  
  static xnf_buf_t *
  xnf_buf_get(xnf_t *xnfp, int flags, boolean_t readonly)
  {
--- 2376,2386 ----
  
          (void) ddi_dma_unbind_handle(bdesc->dma_handle);
          ddi_dma_mem_free(&bdesc->acc_handle);
          ddi_dma_free_handle(&bdesc->dma_handle);
  
!         atomic_dec_64(&xnfp->xnf_stat_buf_allocated);
  }
  
  static xnf_buf_t *
  xnf_buf_get(xnf_t *xnfp, int flags, boolean_t readonly)
  {
*** 2410,2420 ****
  
          gnttab_grant_foreign_access_ref(bufp->grant_ref,
              xvdi_get_oeid(bufp->xnfp->xnf_devinfo),
              bufp->buf_mfn, readonly ? 1 : 0);
  
!         atomic_add_64(&xnfp->xnf_stat_buf_outstanding, 1);
  
          return (bufp);
  }
  
  static void
--- 2410,2420 ----
  
          gnttab_grant_foreign_access_ref(bufp->grant_ref,
              xvdi_get_oeid(bufp->xnfp->xnf_devinfo),
              bufp->buf_mfn, readonly ? 1 : 0);
  
!         atomic_inc_64(&xnfp->xnf_stat_buf_outstanding);
  
          return (bufp);
  }
  
  static void
*** 2427,2437 ****
                  bufp->grant_ref = INVALID_GRANT_REF;
          }
  
          kmem_cache_free(xnfp->xnf_buf_cache, bufp);
  
!         atomic_add_64(&xnfp->xnf_stat_buf_outstanding, -1);
  }
  
  /*
   * Refresh any cached data about a buffer after resume.
   */
--- 2427,2437 ----
                  bufp->grant_ref = INVALID_GRANT_REF;
          }
  
          kmem_cache_free(xnfp->xnf_buf_cache, bufp);
  
!         atomic_dec_64(&xnfp->xnf_stat_buf_outstanding);
  }
  
  /*
   * Refresh any cached data about a buffer after resume.
   */