[lkml]   [2003]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] read_trylock for i386
On Tue, Aug 12, 2003 at 11:14:17PM -0700, Roland McGrath wrote:
> The following header patches add the read_trylock macro, implementing it
> fully for i386 and leaving other architectures with an always-fail fallback.
> Other architectures include/asm-foo/spinlock.h files should define
> _raw_read_trylock appropriately and define HAVE_ARCH_RAW_READ_TRYLOCK. But
> until they do, machine-independent code can use read_trylock for optimization
> purposes (i.e. where it falls back to using read_lock) and architectures that
> haven't implemented it will just not be getting the optimization.

I strongy dislike the always-fail case. Just let the other arches fail
until the arch maintainers update them.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:47    [W:0.068 / U:0.920 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site