Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1216940

Re: [PATCH 09/15] x86, amd: add accessor for number of cores per compute unit

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: [PATCH 09/15] x86, amd: add accessor for number of cores per compute unit
Date 2015-09-01 18:00 +0200
Message-ID <q3W8y-2Bi-15@gated-at.bofh.it> (permalink)
References (5 earlier) <q3sNb-2pJ-5@gated-at.bofh.it> <q3zOG-4hj-21@gated-at.bofh.it> <q3zYn-4sz-31@gated-at.bofh.it> <q3EbE-1Wt-19@gated-at.bofh.it> <q3EOm-2Vg-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On Mon, Aug 31, 2015 at 02:24:08PM -0700, Guenter Roeck wrote:
> That is a matter of driver implementation. Very commonly hwmon drivers
> implement value caching, where data from the device is only read at
> minimum intervals, and the cached values are reported if the information
> is polled too rapidly.

I don't see how we can use cached values in that case as they'd be
basically a lie as to how much power the CU/processor has consumed. I
guess it would be fairer to the user to warn instead and not issue any
values or to simply delay the read to a min timeout...

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Borislav Petkov <bp@alien8.de> - 2015-08-28 08:50 +0200
  Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-08-28 10:10 +0200
  Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Ingo Molnar <mingo@kernel.org> - 2015-08-28 10:10 +0200
    Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Borislav Petkov <bp@alien8.de> - 2015-08-28 11:00 +0200
    Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Ingo Molnar <mingo@kernel.org> - 2015-08-29 11:20 +0200
      Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Borislav Petkov <bp@alien8.de> - 2015-08-30 18:00 +0200
        Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Peter Zijlstra <peterz@infradead.org> - 2015-08-31 10:40 +0200
          Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-08-31 15:30 +0200
            Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Peter Zijlstra <peterz@infradead.org> - 2015-08-31 15:40 +0200
              Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-08-31 16:00 +0200
                Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Peter Zijlstra <peterz@infradead.org> - 2015-08-31 17:00 +0200
                Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-08-31 17:20 +0200
          Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Borislav Petkov <bp@alien8.de> - 2015-08-31 18:10 +0200
            Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-08-31 18:20 +0200
              Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Peter Zijlstra <peterz@infradead.org> - 2015-08-31 22:50 +0200
                Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-08-31 23:30 +0200
                Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Borislav Petkov <bp@alien8.de> - 2015-09-01 18:00 +0200
                Re: [PATCH 09/15] x86, amd: add accessor for number of cores per  compute unit Guenter Roeck <linux@roeck-us.net> - 2015-09-01 18:10 +0200

csiph-web