posix_types: Remove fd_set macros
authorH. Peter Anvin <hpa@zytor.com>
Wed, 8 Feb 2012 05:09:05 +0000 (21:09 -0800)
committerH. Peter Anvin <hpa@zytor.com>
Tue, 14 Feb 2012 20:47:21 +0000 (12:47 -0800)
commit8b3d1cda4f5ff0d7c2ae910ea8fd03493996912f
treec03be096f3e8b3205e749277d7274ec5ea95fae7
parent2759e6512e0bd9f9a84e10f59fb71195e7ff9775
posix_types: Remove fd_set macros

<asm/posix_types.h> includes a set of macros that operate on file
descriptors.  Way long ago those were exported to user space, but
nowadays they are #ifdef __KERNEL__.

However, they are nothing but standard (nonatomic) bit operations, and
we already have optimized versions of bit operations in the kernel.
We can't include <linux/bitops.h> in <asm/posix_types.h> but we can
move the definitions to <linux/time.h> and define them there in terms
of standard kernel bitops.

[ v2: folds the following fixes in:

  a) Stray space in __FD_SET(), reported by Andrew Morton
  b) #include <linux/string.h> needed for memset(), reported by Tony Luck ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1328677745-20121-22-git-send-email-hpa@zytor.com
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
include/asm-generic/posix_types.h
include/linux/time.h