linux-kernel - Re: [PATCH PATCH v2 2/9] cpufreq: intel_pstate: Use topology_cpu

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Date: Mon, 1 Jul 2024 10:14:56 -0700
From: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	daniel.sneddon@...ux.intel.com, tony.luck@...el.com,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Brice Goglin <brice.goglin@...il.com>,
	Mario Limonciello <mario.limonciello@....com>,
	Perry Yuan <Perry.Yuan@....com>,
	Dapeng Mi <dapeng1.mi@...ux.intel.com>
Subject: Re: [PATCH PATCH v2 2/9] cpufreq: intel_pstate: Use
 topology_cpu_type()

On Mon, Jul 01, 2024 at 07:08:41PM +0200, Rafael J. Wysocki wrote:
> On Thu, Jun 27, 2024 at 10:44 PM Pawan Gupta
> <pawan.kumar.gupta@...ux.intel.com> wrote:
> >
> > Intel pstate driver uses hybrid_get_type() to get the cpu-type of a given
> > CPU. It uses smp_call_function_single() which is sub-optimal. Avoid it by
> > using topology_hw_cpu_type(cpu) that returns the cached cpu-type.
> >
> > Suggested-by: Dave Hansen <dave.hansen@...ux.intel.com>
> > Signed-off-by: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
> > Acked-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> 
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Thanks.

> and I'm assuming that it will be routed along with the rest of the series.

I believe yes, as it has a dependency on the first patch.