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    SubjectRe: [PATCH V3 1/5] perf/amd/iommu: Consolidate and move perf_event_amd_iommu header
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    Hi Boris,

    On 2/10/16 23:41, Borislav Petkov wrote:
    > On Tue, Feb 09, 2016 at 04:53:51PM -0600, Suravee Suthikulpanit wrote:
    >> >This patch consolidates "arch/x86/kernel/cpu/perf_event_amd_iommu.h" and
    >> >"drivers/iommu/amd_iommu_proto.h", which contain duplicate function
    >> >declarations, into "include/linux/perf/perf_event_amd_iommu.h"
    >> >
    >> >Reviewed-by: Joerg Roedel<jroedel@suse.de>
    >> >Signed-off-by: Suravee Suthikulpanit<Suravee.Suthikulpanit@amd.com>
    >> >---
    >> > arch/x86/kernel/cpu/perf_event_amd_iommu.c | 2 +-
    >> > arch/x86/kernel/cpu/perf_event_amd_iommu.h | 40 ------------------------------
    >> > drivers/iommu/amd_iommu_init.c | 2 ++
    >> > drivers/iommu/amd_iommu_proto.h | 7 ------
    >> > include/linux/perf/perf_event_amd_iommu.h | 40 ++++++++++++++++++++++++++++++
    >> > 5 files changed, 43 insertions(+), 48 deletions(-)
    >> > delete mode 100644 arch/x86/kernel/cpu/perf_event_amd_iommu.h
    >> > create mode 100644 include/linux/perf/perf_event_amd_iommu.h
    > Is this a header which will be used on something else besides x86 or why
    > is it being moved to include/linux/ ?
    >
    > If not, it should go into arch/x86/events/ with the rest of the perf
    > private headers.
    >
    > ...
    >

    My goal here is to find a place that I can declare a set of function
    prototypes and macros used in the IOMMU driver and IOMMU PERF. These are
    exported by the AMD IOMMU and can be used by other drivers (e.g. IOMMU
    perf).

    The reason I picked this location to place the header file is because
    there is already an existing include/linux/perf/arm_pmu.h file there.
    So, I thought it might be alright to put the perf_event_amd_iommu.h here.

    Having the information in the file arch/x86/events/amd/iommu.h seems
    strange for having to specify ../../arch/x86/events/amd/iommu.h in the
    IOMMU driver.

    So, you think it would be alright if move

    include/linux/perf/perf_event_amd_iommu.h
    to
    arch/x86/include/perf/perf_event_amd_iommu.h


    Suravee

    Thanks,
    Suravee

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