linux-kernel - [PATCH v4 1/3] x86, ACPI: rename init_freq_invariance_cppc to arch_init_invariance

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Date:   Thu, 10 Mar 2022 14:54:49 +0000
From:   Ionela Voinescu <ionela.voinescu@....com>
To:     Sudeep Holla <sudeep.holla@....com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Giovanni Gherdovich <ggherdovich@...e.cz>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Sean Kelley <skelley@...dia.com>
Cc:     Pierre Gondois <pierre.gondois@....com>,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: [PATCH v4 1/3] x86, ACPI: rename init_freq_invariance_cppc to arch_init_invariance_cppc

init_freq_invariance_cppc() was called in acpi_cppc_processor_probe(),
after CPU performance information and controls were populated from the
per-cpu _CPC objects.

But these _CPC objects provide information that helps with both CPU
(u-arch) and frequency invariance. Therefore, change the function name
to a more generic one, while adding the arch_ prefix, as this function
is expected to be defined differently by different architectures.

Signed-off-by: Ionela Voinescu <ionela.voinescu@....com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Tested-by: Valentin Schneider <valentin.schneider@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Giovanni Gherdovich <ggherdovich@...e.cz>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
---
 arch/x86/include/asm/topology.h | 2 +-
 drivers/acpi/cppc_acpi.c        | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 127b693273e3..9619385bf749 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -228,7 +228,7 @@ static inline void init_freq_invariance(bool secondary, bool cppc_ready)
 
 #ifdef CONFIG_ACPI_CPPC_LIB
 void init_freq_invariance_cppc(void);
-#define init_freq_invariance_cppc init_freq_invariance_cppc
+#define arch_init_invariance_cppc init_freq_invariance_cppc
 
 bool amd_set_max_freq_ratio(u64 *ratio);
 #else
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 866560cbb082..bfd142ab4e07 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -633,8 +633,8 @@ static bool is_cppc_supported(int revision, int num_ent)
  *  )
  */
 
-#ifndef init_freq_invariance_cppc
-static inline void init_freq_invariance_cppc(void) { }
+#ifndef arch_init_invariance_cppc
+static inline void arch_init_invariance_cppc(void) { }
 #endif
 
 /**
@@ -816,7 +816,7 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 		goto out_free;
 	}
 
-	init_freq_invariance_cppc();
+	arch_init_invariance_cppc();
 
 	kfree(output.pointer);
 	return 0;
-- 
2.25.1