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    Subject[PATCH 4.9 25/80] perf/x86: Fix Broadwell-EP DRAM RAPL events
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Vince Weaver <vincent.weaver@maine.edu>

    commit 33b88e708e7dfa58dc896da2a98f5719d2eb315c upstream.

    It appears as though the Broadwell-EP DRAM units share the special
    units quirk with Haswell-EP/KNL.

    Without this patch, you get really high results (a single DRAM using 20W
    of power).

    The powercap driver in drivers/powercap/intel_rapl.c already has this
    change.

    Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Kan Liang <kan.liang@intel.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Stephane Eranian <eranian@gmail.com>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/x86/events/intel/rapl.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/x86/events/intel/rapl.c
    +++ b/arch/x86/events/intel/rapl.c
    @@ -759,7 +759,7 @@ static const struct x86_cpu_id rapl_cpu_

    X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_CORE, hsw_rapl_init),
    X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_GT3E, hsw_rapl_init),
    - X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_X, hsw_rapl_init),
    + X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_X, hsx_rapl_init),
    X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_XEON_D, hsw_rapl_init),

    X86_RAPL_MODEL_MATCH(INTEL_FAM6_XEON_PHI_KNL, knl_rapl_init),

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