lkml.org 
[lkml]   [2012]   [Jul]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Xen-devel] [PATCH 04/24] xen/arm: sync_bitops
On Thu, Jul 26, 2012 at 04:33:46PM +0100, Stefano Stabellini wrote:
> sync_bitops functions are equivalent to the SMP implementation of the
> original functions, independently from CONFIG_SMP being defined.

So why can't the code be changed to use that? Is it that
the _set_bit, _clear_bit, etc are not available with !CONFIG_SMP?

>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> ---
> arch/arm/include/asm/sync_bitops.h | 17 +++++++++++++++++
> 1 files changed, 17 insertions(+), 0 deletions(-)
> create mode 100644 arch/arm/include/asm/sync_bitops.h
>
> diff --git a/arch/arm/include/asm/sync_bitops.h b/arch/arm/include/asm/sync_bitops.h
> new file mode 100644
> index 0000000..d975092903
> --- /dev/null
> +++ b/arch/arm/include/asm/sync_bitops.h
> @@ -0,0 +1,17 @@
> +#ifndef __ASM_SYNC_BITOPS_H__
> +#define __ASM_SYNC_BITOPS_H__
> +
> +#include <asm/bitops.h>
> +#include <asm/system.h>
> +
> +#define sync_set_bit(nr, p) _set_bit(nr, p)
> +#define sync_clear_bit(nr, p) _clear_bit(nr, p)
> +#define sync_change_bit(nr, p) _change_bit(nr, p)
> +#define sync_test_and_set_bit(nr, p) _test_and_set_bit(nr, p)
> +#define sync_test_and_clear_bit(nr, p) _test_and_clear_bit(nr, p)
> +#define sync_test_and_change_bit(nr, p) _test_and_change_bit(nr, p)
> +#define sync_test_bit(nr, addr) test_bit(nr, addr)
> +#define sync_cmpxchg cmpxchg
> +
> +
> +#endif
> --
> 1.7.2.5
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel


\
 
 \ /
  Last update: 2012-07-26 19:21    [W:0.266 / U:3.628 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site