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

Groups > linux.kernel > #1446922

RE: [PATCH] intel_pstate: Update cpu_frequency tracepoint every time

Show all headers | View raw

On 2016.07.19 15:10 Srinivas Pandruvada wrote:
> On Tue, 2016-07-19 at 15:10 +0200, Rafael J. Wysocki wrote:
>> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>> 
>> Currently, intel_pstate only updates the cpu_frequency tracepoint
>> if the new P-state to set is different from the current one, but
>> that causes powertop to report 100% idle on an 100% loaded system
>> sometimes.
>> 
>> Prevent that from happening by updating the cpu_frequency tracepoint
>> every time intel_pstate_update_pstate() is called.
>> 
>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>-

Shouldn't this patch refer to:

commit fdfdb2b1301670a69195ba1e5666df4a7f02eb46
Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date:   Fri Mar 18 23:20:02 2016 +0100

    intel_pstate: Do not call wrmsrl_on_cpu() with disabled interrupts

which is the patch that introduced the regression?

... Doug

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

Thread

[PATCH] intel_pstate: Update cpu_frequency tracepoint every time "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-07-19 15:10 +0200
  Re: [PATCH] intel_pstate: Update cpu_frequency tracepoint every time Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> - 2016-07-20 00:40 +0200
    RE: [PATCH] intel_pstate: Update cpu_frequency tracepoint every time "Doug Smythies" <dsmythies@telus.net> - 2016-07-20 05:20 +0200
      Re: [PATCH] intel_pstate: Update cpu_frequency tracepoint every time "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-07-23 14:40 +0200

csiph-web