On 21.01.11 05:06:52, Heinz Graalfs wrote:
> From: Heinz Graalfs <graalfs@xxxxxxxxxxxxxxxxxx>
>
> System z's hardware sampling is described in detail in:
>
> SA23-2260-01 "The Load-Program-Parameter and CPU-Measurement Facilities"
>
> The patch introduces
> - support for System z's hardware sampler in OProfile's kernel module
> - it adds functions that control all hardware sampling related operations as
> - checking if hardware sampling feature is available
> - ie: on System z models z10 and up, in LPAR mode only, and authorised during LPAR activation
> - allocating memory for the hardware sampling feature
> - starting/stopping hardware sampling
>
> All functions required to start and stop hardware sampling have to be
> invoked by the oprofile kernel module as provided by the other patches of this patch set.
>
> In case hardware based sampling cannot be setup standard timer based sampling is used by OProfile.
>
> Signed-off-by: Mahesh Salgaonkar <mahesh@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Maran Pakkirisamy <maranp@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Heinz Graalfs <graalfs@xxxxxxxxxxxxxxxxxx>
> ---
> arch/Kconfig | 3
> arch/s390/Kconfig | 1
> arch/s390/oprofile/hwsampler.c | 1256 +++++++++++++++++++++++++++++++++++++++++
> arch/s390/oprofile/hwsampler.h | 113 +++
> 4 files changed, 1373 insertions(+)
Applied with following changes:
* enable compilation in Makefile
-Robert
--
Advanced Micro Devices, Inc.
Operating System Research Center
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