lkml.org 
[lkml]   [2020]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v2 3/4] sparc64: remove mm_cpumask clearing to fix kthread_use_mm race
From
From: Nicholas Piggin <npiggin@gmail.com>
Date: Mon, 14 Sep 2020 14:52:18 +1000

...
> The basic fix for sparc64 is to remove its mm_cpumask clearing code. The
> optimisation could be effectively restored by sending IPIs to mm_cpumask
> members and having them remove themselves from mm_cpumask. This is more
> tricky so I leave it as an exercise for someone with a sparc64 SMP.
> powerpc has a (currently similarly broken) example.
>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Sad to see this optimization go away, but what can I do:

Acked-by: David S. Miller <davem@davemloft.net>

\
 
 \ /
  Last update: 2020-09-14 22:01    [W:0.097 / U:3.456 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site