lkml.org 
[lkml]   [2012]   [Jun]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: perf user tool precise attribute broken in 3.5rc1+
From
On Thu, Jun 7, 2012 at 10:58 PM, Andi Kleen <andi@firstfloor.org> wrote:
> On Thu, Jun 07, 2012 at 10:53:19PM +0200, Stephane Eranian wrote:
>> On Thu, Jun 7, 2012 at 10:23 PM, Andi Kleen <andi@firstfloor.org> wrote:
>> >
>> > With a perf user tool compiled from a 3.5rc1+ kernel I cannot
>> > use the 'p' attribute anymore. Always get
>> >
>> > ak@petrock:~> ./perf record -e cycles:p ./t
>> >
>> >  Error: sys_perf_event_open() syscall returned with 22 (Invalid argument).  /bin/dmesg may provide additional information.
>> >
>> >  Fatal: No CONFIG_PERF_EVENTS=y kernel support configured?
>> >
>> Remember that PEBS is disabled on SNB unless you have the new ucode + my patch.
>
> This is not the problem. This was actually a -E where it was not disabled
> in my tree.  And the older perf binary works, so it's clearly not a kernel
> problem.

What's -E?

>
> -Andi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2012-06-08 00:21    [W:0.107 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site