lkml.org 
[lkml]   [2015]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V8 3/8] perf, x86: handle multiple records in PEBS buffer
> The first issue is that the 'status' field of the PEBS record is a copy
> of the GLOBAL_STATUS MSR at PEBS assist time. To see why this is a

I wanted to mention that Skylake has this issue fixed. The status
field in PEBS is now only the counter that triggered the PEBS record.

> The second issue is that the hardware will only emit one record for two
> or more counters if the event that triggers the assist is 'close'. The

If two events gets merged it is one or the other.

-Andi


\
 
 \ /
  Last update: 2015-05-08 13:41    [W:0.141 / U:29.988 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site