linux-kernel - Re: [PATCH v1 2/6] cpufreq: intel_pstate: Do not update global.turbo

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Date: Sun, 02 Jun 2024 16:11:07 -0700
From: srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>
To: Xi Ruoyao <xry111@...111.site>, "Rafael J. Wysocki" <rjw@...ysocki.net>,
  Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 2/6] cpufreq: intel_pstate: Do not update
 global.turbo_disabled after initialization

On Mon, 2024-06-03 at 00:07 +0800, Xi Ruoyao wrote:
> On Sun, 2024-06-02 at 06:40 -0700, srinivas pandruvada wrote:
> 
> /* snip */
> 
> > This requires user action,
> > Please add a
> > pr_info() to
> > https://elixir.bootlin.com/linux/v6.10-rc1/C/ident/acpi_processor_notify
> > 
> > Check if you got any message
> 
> With
> 
> diff --git a/drivers/acpi/processor_driver.c
> b/drivers/acpi/processor_driver.c
> index 67db60eda370..4585eb6566c8 100644
> --- a/drivers/acpi/processor_driver.c
> +++ b/drivers/acpi/processor_driver.c
> @@ -57,6 +57,8 @@ static void acpi_processor_notify(acpi_handle
> handle, u32 event, void *data)
>  	struct acpi_processor *pr;
>  	int saved;
>  
> +	pr_info("acpi_processor_notify: %d\n", event);
> +
>  	if (device->handle != handle)
>  		return;
> 
> 
> I get nothing.
> 

What is the output of:
grep . /sys/devices/system/cpu/intel_pstate/*

Also 
rdmsr 0x771
rdmsr 0x774

Try these three patches. Don't worry about the commit description for
this issue.

Please send me full dmesg after you see the issue.

Thanks,
Srinivas

> > Also what is 
> > cat /proc/cpuinfo
> > and
> > cpuid -1
> 
> Attached.
> 
> 

View attachment "0003-cpufreq-intel_pstate-Update-turbo-flag-on-HWP-perf-c.patch" of type "text/x-patch" (2188 bytes)

View attachment "0002-cpufreq-intel_pstate-Support-highest-performance-cha.patch" of type "text/x-patch" (4810 bytes)

View attachment "0001-x86-cpufeatures-Add-HWP-highest-perf-change-feature-.patch" of type "text/x-patch" (1309 bytes)