lkml.org 
[lkml]   [2021]   [Mar]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [tip: locking/urgent] locking/ww_mutex: Simplify use_ww_ctx & ww_ctx handling
On Wed, Mar 17, 2021 at 09:43:20AM -0400, Waiman Long wrote:

> Using gcc 8.4.1, the generated __mutex_lock function has the same size (with
> last instruction at offset +5179) with or without this patch. Well, you can
> say that this patch is an no-op wrt generated code.

OK, then GCC has gotten better. Because back then I tried really hard
but it wouldn't remove the if (ww_ctx) branches unless I had that extra
const bool argument.

\
 
 \ /
  Last update: 2021-03-17 14:57    [W:0.168 / U:0.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site