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Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls
Date 2016-01-13 17:40 +0100
Message-ID <qQwCL-2o0-53@gated-at.bofh.it> (permalink)
References <qQigq-HG-9@gated-at.bofh.it> <qQigq-HG-11@gated-at.bofh.it> <qQqe0-6f4-39@gated-at.bofh.it> <qQwt5-2jv-27@gated-at.bofh.it>
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On Wed, Jan 13, 2016 at 08:21:13AM -0800, Jacob Pan wrote:
> Thanks for bring this out. I didn't mean to ignore. I thought my point
> was stated in the commit message there was no point of going back and
> forth. Read-Modify-Write is quite common, not just for RAPL could be
> used by future code. Sorry if I wasn't clear.

But it also shows that it doesn't suffice for all your needs. So why add
it?

You can much better define your own functions which do all the MSR
handling you require and call them with smp_call_function_*.

-- 
Regards/Gruss,
    Boris.

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

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Thread

[PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 02:20 +0100
  Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Thomas Gleixner <tglx@linutronix.de> - 2016-01-13 10:50 +0100
    Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 17:30 +0100
      Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Borislav Petkov <bp@alien8.de> - 2016-01-13 17:40 +0100
        Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 19:00 +0100
          Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Borislav Petkov <bp@alien8.de> - 2016-01-13 19:10 +0100
            Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 19:30 +0100
              Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Borislav Petkov <bp@alien8.de> - 2016-01-13 20:20 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 21:20 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Borislav Petkov <bp@alien8.de> - 2016-01-13 22:30 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-01-13 23:00 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Thomas Gleixner <tglx@linutronix.de> - 2016-01-13 23:10 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 23:20 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls "H. Peter Anvin" <hpa@zytor.com> - 2016-01-13 23:30 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Borislav Petkov <bp@alien8.de> - 2016-01-13 23:20 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-01-13 23:50 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Jacob Pan <jacob.jun.pan@linux.intel.com> - 2016-01-13 23:30 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Borislav Petkov <bp@alien8.de> - 2016-01-13 23:30 +0100
                Re: [PATCH v2 2/2] powercap/rapl: reduce ipi calls Thomas Gleixner <tglx@linutronix.de> - 2016-01-13 23:00 +0100

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