linux-kernel - [PATCH 10/15] cpufreq: powernv: Set .set

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Message-Id: <9b4af20d5b415f41e866ddd8bde9cf6441c463b8.1737707712.git.viresh.kumar@linaro.org>
Date: Fri, 24 Jan 2025 14:28:14 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>
Cc: linux-pm@...r.kernel.org,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Lifeng Zheng <zhenglifeng1@...wei.com>,
	linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 10/15] cpufreq: powernv: Set .set_boost directly

The boost feature can be controlled at two levels currently, driver
level (applies to all policies) and per-policy.

Currently the driver enables driver level boost support from the
per-policy ->init() callback, which isn't really efficient as that gets
called for each policy and then there is online/offline path too where
this gets done unnecessarily.

Instead set the .set_boost field directly and always enable the boost
support. If a policy doesn't support boost feature, the core will not
enable it for that policy.

Keep the initial state of driver level boost to disabled and let the
user enable it if required as ideally the boost frequencies must be used
only when really required.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/cpufreq/powernv-cpufreq.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 0c3e907c58bc..4d3e891ff508 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -1125,7 +1125,7 @@ static int __init powernv_cpufreq_init(void)
 		goto out;
 
 	if (powernv_pstate_info.wof_enabled)
-		powernv_cpufreq_driver.boost_enabled = true;
+		powernv_cpufreq_driver.set_boost = cpufreq_boost_set_sw;
 	else
 		powernv_cpu_freq_attr[SCALING_BOOST_FREQS_ATTR_INDEX] = NULL;
 
@@ -1135,9 +1135,6 @@ static int __init powernv_cpufreq_init(void)
 		goto cleanup;
 	}
 
-	if (powernv_pstate_info.wof_enabled)
-		cpufreq_enable_boost_support();
-
 	register_reboot_notifier(&powernv_cpufreq_reboot_nb);
 	opal_message_notifier_register(OPAL_MSG_OCC, &powernv_cpufreq_opal_nb);
 
-- 
2.31.1.272.g89b43f80a514