[lkml]   [2011]   [Apr]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 3/4] perf, x86: Use ALTERNATIVE() to check for X86_FEATURE_PERFCTR_CORE
Robert Richter <> writes:

> Using ALTERNATIVE() when checking for X86_FEATURE_PERFCTR_CORE avoids
> an extra pointer chase and data cache hit.

Is that really a performance critical path?

Seems more like unnecessary obfuscation to me.


-- -- Speaking for myself only

 \ /
  Last update: 2011-04-18 22:05    [W:0.155 / U:7.200 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site