ACK/cmnt: [Artful][PATCH 00/12] Backport for Power9 Nest PMU Instrumentation

[Kleber Souza]

On 11/02/17 15:04, Gustavo Walbon wrote:
> BugLink: https://bugs.launchpad.net/bugs/1481347
> 
> This patchset enable the Power9 Nest PMU Counter to enable it for perf tool. 
> 
> These Nest PMU Counters provide per-chip metrics such memory bandwidth, Powerbus
> bandwidth and so on.
> 
> For test it needs Power9 machine with latest version of BMC and the minimum
> skiboot version v5.9-rc5.
> 
> Anju T (1):
>   powerpc/perf/imc: Fix nest events on muti socket system
> 
> Anju T Sudhakar (6):
>   powerpc/perf: Add nest IMC PMU support
>   powerpc/perf: Add core IMC PMU support
>   powerpc/perf: Add thread IMC PMU support
>   powerpc/perf: Fix for core/nest imc call trace on cpuhotplug
>   powerpc/perf: Add ___GFP_NOWARN flag to alloc_pages_node()
>   powerpc/perf: Fix IMC initialization crash
> 
> Dan Carpenter (1):
>   powerpc/perf: Fix double unlock in imc_common_cpuhp_mem_free()
> 
> LABBE Corentin (1):
>   powerpc/powernv: Fix build error in opal-imc.c when NUMA=n
> 
> Madhavan Srinivasan (3):
>   powerpc/powernv: Add IMC OPAL APIs
>   powerpc/powernv: Detect and create IMC device
>   powerpc/perf: Fix usage of nest_imc_refc
> 
>  arch/powerpc/include/asm/imc-pmu.h             |  128 +++
>  arch/powerpc/include/asm/opal-api.h            |   12 +-
>  arch/powerpc/include/asm/opal.h                |    5 +
>  arch/powerpc/perf/Makefile                     |    1 +
>  arch/powerpc/perf/imc-pmu.c                    | 1335 ++++++++++++++++++++++++
>  arch/powerpc/platforms/powernv/Makefile        |    1 +
>  arch/powerpc/platforms/powernv/opal-imc.c      |  226 ++++
>  arch/powerpc/platforms/powernv/opal-wrappers.S |    3 +
>  arch/powerpc/platforms/powernv/opal.c          |   14 +
>  include/linux/cpuhotplug.h                     |    3 +
>  10 files changed, 1727 insertions(+), 1 deletion(-)
>  create mode 100644 arch/powerpc/include/asm/imc-pmu.h
>  create mode 100644 arch/powerpc/perf/imc-pmu.c
>  create mode 100644 arch/powerpc/platforms/powernv/opal-imc.c
> 

As Stefan pointed out, please provide the SRU justification info in the bug.

Apart from that, the changes are limited to powerpc and powerpc/perf and
are clean cherry picks, so little regression potential.

Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>