[lkml]   [2010]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: linux-next: PowerPC WARN_ON_ONCE() after merge of the final tree (tip related)
From: Ingo Molnar <>
Date: Thu, 15 Apr 2010 08:49:40 +0200

> Btw., WARN_ON trapping on PowerPC is clearly a PowerPC bug - there's a good
> reason we have WARN_ON versus BUG_ON - it should be fixed.

I disagree, an implementation should be allowed to use the most
efficient implementation possible for both interfaces.

I would be using traps for both on sparc64 if that were really
feasible on sparc64 (and actually with gcc-4.5's "asm goto" it might
actually be now)

The WARN and BUG macros, when implemented without traps, have serious
implications for overall code size and register pressure.

 \ /
  Last update: 2010-04-15 08:59    [W:0.096 / U:8.580 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site