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SubjectRe: [PATCH V3 0/5] perf/amd/iommu: Enable multi-IOMMU support
On Tue, Feb 09, 2016 at 04:53:50PM -0600, Suravee Suthikulpanit wrote:
> From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
>
> This patch series modifies the existing perf_event_amd_iommu driver
> to support systems with multiple IOMMUs. It introduces new AMD IOMMU APIs,
> which will are used by the AMD IOMMU Perf driver to access performance
> counters in multiple IOMMUs.
>
> In addition, this series should also fix current AMD IOMMU PMU driver
> initialization issue in some existing KV and CZ platform.
>
> Note that this patch also fixes the issue where IOMMU driver fails
> to write to IOMMU perf counter as reported by Andreas Hartmann here
> (http://comments.gmane.org/gmane.linux.kernel.pci/49147).
>
> Git branch containing this patch series is available here:
>
> https://github.com/ssuthiku/linux.git perf-iommu-v3
>
> Changes from V2 ( https://lkml.org/lkml/2016/1/1/141)
> * Ported to 4.5.0-rc2
> * Add reviewed by Joerg for patch 1 and 2
> * Remove EXPORT_SYMBOL from patch 3 (per Joerg suggestion)
> * Merge patch 4/6 and 6/6 from V2 into 5/5 in V3 and add
> more description in the commit message and in code comment.
> * Patch 5: modify the logic to update counts to get rid off
> un-necessary local64_cmpxchg().
>
> Changes from V1 (https://lkml.org/lkml/2015/12/22/535):
> * Update patch3 and 6 to use amd_iommus_present instead of introducing
> amd_iommu_cnt static variable since they are the same thing
>
> Suravee Suthikulpanit (5):
> perf/amd/iommu: Consolidate and move perf_event_amd_iommu header
> perf/amd/iommu: Modify functions to query max banks and counters
> iommu/amd: Introduce amd_iommu_get_num_iommus()
> perf/amd/iommu: Introduce get_iommu_bnk_cnt_evt_idx
> perf/amd/iommu: Enable support for multiple IOMMUs
>
> arch/x86/kernel/cpu/perf_event_amd_iommu.c | 164 ++++++++++++++++++++---------
> arch/x86/kernel/cpu/perf_event_amd_iommu.h | 40 -------

You probably want to redo those against latest tip/master:

http://git.kernel.org/tip/5b26547dd7faa84e1293baa144a0f3e74ed7d4c7

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.

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