diff mbox series

[v10,1/8] cpufreq: amd-pstate: Document *_limit_* fields in struct amd_cpudata

Message ID 6b8432f302165e686a01ffe7d1d98852d5e88609.1711335714.git.perry.yuan@amd.com (mailing list archive)
State Needs ACK
Headers show
Series AMD Pstate Fixes And Enhancements | expand

Commit Message

Perry Yuan March 25, 2024, 3:03 a.m. UTC
From: "Gautham R. Shenoy" <gautham.shenoy@amd.com>

The four fields of struct cpudata namely min_limit_perf,
max_limit_perf, min_limit_freq, max_limit_freq introduced in the
commit febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and
scaling_max_freq update") are currently undocumented

Add comments describing these fields

Fixes: febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update")
Reviewed-by: Li Meng <li.meng@amd.com>
Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
---
 include/linux/amd-pstate.h | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Huang Rui April 15, 2024, 1:37 a.m. UTC | #1
On Mon, Mar 25, 2024 at 11:03:21AM +0800, Yuan, Perry wrote:
> From: "Gautham R. Shenoy" <gautham.shenoy@amd.com>
> 
> The four fields of struct cpudata namely min_limit_perf,
> max_limit_perf, min_limit_freq, max_limit_freq introduced in the
> commit febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and
> scaling_max_freq update") are currently undocumented
> 
> Add comments describing these fields
> 
> Fixes: febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update")
> Reviewed-by: Li Meng <li.meng@amd.com>
> Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
> Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
> Signed-off-by: Perry Yuan <perry.yuan@amd.com>
> ---
>  include/linux/amd-pstate.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h
> index d21838835abd..212f377d615b 100644
> --- a/include/linux/amd-pstate.h
> +++ b/include/linux/amd-pstate.h
> @@ -49,6 +49,10 @@ struct amd_aperf_mperf {
>   * @lowest_perf: the absolute lowest performance level of the processor
>   * @prefcore_ranking: the preferred core ranking, the higher value indicates a higher
>   * 		  priority.
> + * @min_limit_perf: Cached value of the perf corresponding to policy->min
> + * @max_limit_perf: Cached value of the perf corresponding to policy->max

I think we should use "performance" instead of "perf" in the comments.

With that fixed, patch is Acked-by: Huang Rui <ray.huang@amd.com>

Thanks,
Ray

> + * @min_limit_freq: Cached value of policy->min
> + * @max_limit_freq: Cached value of policy->max
>   * @max_freq: the frequency that mapped to highest_perf
>   * @min_freq: the frequency that mapped to lowest_perf
>   * @nominal_freq: the frequency that mapped to nominal_perf
> -- 
> 2.34.1
>
Perry Yuan April 18, 2024, 9:17 a.m. UTC | #2
[AMD Official Use Only - General]

> -----Original Message-----
> From: Huang, Ray <Ray.Huang@amd.com>
> Sent: Monday, April 15, 2024 9:37 AM
> To: Yuan, Perry <Perry.Yuan@amd.com>
> Cc: rafael.j.wysocki@intel.com; Limonciello, Mario
> <Mario.Limonciello@amd.com>; viresh.kumar@linaro.org; Shenoy, Gautham
> Ranjal <gautham.shenoy@amd.com>; Petkov, Borislav
> <Borislav.Petkov@amd.com>; Deucher, Alexander
> <Alexander.Deucher@amd.com>; Huang, Shimmer
> <Shimmer.Huang@amd.com>; oleksandr@natalenko.name; Du, Xiaojian
> <Xiaojian.Du@amd.com>; Meng, Li (Jassmine) <Li.Meng@amd.com>; linux-
> pm@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v10 1/8] cpufreq: amd-pstate: Document *_limit_* fields
> in struct amd_cpudata
>
> On Mon, Mar 25, 2024 at 11:03:21AM +0800, Yuan, Perry wrote:
> > From: "Gautham R. Shenoy" <gautham.shenoy@amd.com>
> >
> > The four fields of struct cpudata namely min_limit_perf,
> > max_limit_perf, min_limit_freq, max_limit_freq introduced in the
> > commit febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and
> > scaling_max_freq update") are currently undocumented
> >
> > Add comments describing these fields
> >
> > Fixes: febab20caeba("cpufreq/amd-pstate: Fix scaling_min_freq and
> > scaling_max_freq update")
> > Reviewed-by: Li Meng <li.meng@amd.com>
> > Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
> > Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
> > Signed-off-by: Perry Yuan <perry.yuan@amd.com>
> > ---
> >  include/linux/amd-pstate.h | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h
> > index d21838835abd..212f377d615b 100644
> > --- a/include/linux/amd-pstate.h
> > +++ b/include/linux/amd-pstate.h
> > @@ -49,6 +49,10 @@ struct amd_aperf_mperf {
> >   * @lowest_perf: the absolute lowest performance level of the processor
> >   * @prefcore_ranking: the preferred core ranking, the higher value indicates
> a higher
> >   *                   priority.
> > + * @min_limit_perf: Cached value of the perf corresponding to
> > + policy->min
> > + * @max_limit_perf: Cached value of the perf corresponding to
> > + policy->max
>
> I think we should use "performance" instead of "perf" in the comments.

The max limit perf should be OK,  the perf string is more meaningful for the pstate driver performance level control.
Thanks.


Perry.
>
> With that fixed, patch is Acked-by: Huang Rui <ray.huang@amd.com>
>
> Thanks,
> Ray

Thanks, will pick up the flag in v11.


>
> > + * @min_limit_freq: Cached value of policy->min
> > + * @max_limit_freq: Cached value of policy->max
> >   * @max_freq: the frequency that mapped to highest_perf
> >   * @min_freq: the frequency that mapped to lowest_perf
> >   * @nominal_freq: the frequency that mapped to nominal_perf
> > --
> > 2.34.1
> >
diff mbox series

Patch

diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h
index d21838835abd..212f377d615b 100644
--- a/include/linux/amd-pstate.h
+++ b/include/linux/amd-pstate.h
@@ -49,6 +49,10 @@  struct amd_aperf_mperf {
  * @lowest_perf: the absolute lowest performance level of the processor
  * @prefcore_ranking: the preferred core ranking, the higher value indicates a higher
  * 		  priority.
+ * @min_limit_perf: Cached value of the perf corresponding to policy->min
+ * @max_limit_perf: Cached value of the perf corresponding to policy->max
+ * @min_limit_freq: Cached value of policy->min
+ * @max_limit_freq: Cached value of policy->max
  * @max_freq: the frequency that mapped to highest_perf
  * @min_freq: the frequency that mapped to lowest_perf
  * @nominal_freq: the frequency that mapped to nominal_perf