On 02/21/2014 12:26 PM, Peter Zijlstra wrote:
On Fri, Feb 21, 2014 at 12:09:57PM -0500, Waiman Long wrote:
On 02/21/2014 12:08 PM, Waiman Long wrote:
On 02/21/2014 07:12 AM, Peter Zijlstra wrote:
Why is this x86 only code?
The code is making use of the fact that byte write is atomic which is true
in x86 and probably in a few other architectures. I could pull these codes
into the generic qspinlock.c file and set a flag in the asm header file to
activate it if it is what you want.
-Longman
BTW, I also assume that 8-bit and 16-bit cmpxchg() and xchg() are available.
Right, screw Alpha :-) Just pull it into the generic code; its far too
much code to replicate per arch.
OK, I will do that in the next version.
-Longman
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