lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 7 Jun 2012 22:53:19 +0200
From:	Stephane Eranian <eranian@...gle.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	acme@...hat.com, jolsa@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: perf user tool precise attribute broken in 3.5rc1+

On Thu, Jun 7, 2012 at 10:23 PM, Andi Kleen <andi@...stfloor.org> wrote:
>
> With a perf user tool compiled from a 3.5rc1+ kernel I cannot
> use the 'p' attribute anymore. Always get
>
> ak@...rock:~> ./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.

> ./t: Terminated
>
> With an older perf it works, so the kernel is ok.
>
> ak@...rock:~> ./perf record -e cycles:p ./t
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 0.005 MB perf.data (~217 samples) ]
> ak@...rock:~>
>
>
> -Andi
> --
> ak@...ux.intel.com -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists