[lkml]   [2020]   [Jul]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v3 0/6] powerpc: queued spinlocks and rwlocks
On Tue, Jul 07, 2020 at 03:57:06PM +1000, Nicholas Piggin wrote:
> Yes, powerpc could certainly get more performance out of the slow
> paths, and then there are a few parameters to tune.

Can you clarify? The slow path is already in use on ARM64 which is weak,
so I doubt there's superfluous serialization present. And Will spend a
fair amount of time on making that thing guarantee forward progressm, so
there just isn't too much room to play.

> We don't have a good alternate patching for function calls yet, but
> that would be something to do for native vs pv.

Going by your jump_label implementation, support for static_call should
be fairly straight forward too, no?

 \ /
  Last update: 2020-07-08 10:42    [W:0.095 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site