From: Ankur Arora <ankur.a.arora@oracle.com>
To: linux-pm@vger.kernel.org, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
x86@kernel.org, hpa@zytor.com, pbonzini@redhat.com,
wanpengli@tencent.com, vkuznets@redhat.com, rafael@kernel.org,
daniel.lezcano@linaro.org, peterz@infradead.org, arnd@arndb.de,
lenb@kernel.org, mark.rutland@arm.com, harisokn@amazon.com,
mtosatti@redhat.com, sudeep.holla@arm.com, cl@gentwo.org,
misono.tomohiro@fujitsu.com, maobibo@loongson.cn,
joao.m.martins@oracle.com, boris.ostrovsky@oracle.com,
konrad.wilk@oracle.com
Subject: [PATCH v7 05/10] governors/haltpoll: drop kvm_para_available() check
Date: Fri, 30 Aug 2024 15:28:39 -0700 [thread overview]
Message-ID: <20240830222844.1601170-6-ankur.a.arora@oracle.com> (raw)
In-Reply-To: <20240830222844.1601170-1-ankur.a.arora@oracle.com>
From: Joao Martins <joao.m.martins@oracle.com>
The haltpoll governor is selected either by the cpuidle-haltpoll
driver, or explicitly by the user.
In particular, it is never selected by default since it has the lowest
rating of all governors (menu=20, teo=19, ladder=10/25, haltpoll=9).
So, we can safely forgo the kvm_para_available() check. This also
allows cpuidle-haltpoll to be tested on baremetal.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
---
drivers/cpuidle/governors/haltpoll.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/cpuidle/governors/haltpoll.c b/drivers/cpuidle/governors/haltpoll.c
index 663b7f164d20..c8752f793e61 100644
--- a/drivers/cpuidle/governors/haltpoll.c
+++ b/drivers/cpuidle/governors/haltpoll.c
@@ -18,7 +18,6 @@
#include <linux/tick.h>
#include <linux/sched.h>
#include <linux/module.h>
-#include <linux/kvm_para.h>
#include <trace/events/power.h>
static unsigned int guest_halt_poll_ns __read_mostly = 200000;
@@ -148,10 +147,7 @@ static struct cpuidle_governor haltpoll_governor = {
static int __init init_haltpoll(void)
{
- if (kvm_para_available())
- return cpuidle_register_governor(&haltpoll_governor);
-
- return 0;
+ return cpuidle_register_governor(&haltpoll_governor);
}
postcore_initcall(init_haltpoll);
--
2.43.5
next prev parent reply other threads:[~2024-08-30 22:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-30 22:28 [PATCH v7 00/10] Enable haltpoll on arm64 Ankur Arora
2024-08-30 22:28 ` [PATCH v7 01/10] cpuidle/poll_state: poll via smp_cond_load_relaxed() Ankur Arora
2024-08-30 22:28 ` [PATCH v7 02/10] cpuidle: rename ARCH_HAS_CPU_RELAX to ARCH_HAS_OPTIMIZED_POLL Ankur Arora
2024-08-30 22:28 ` [PATCH v7 03/10] Kconfig: move ARCH_HAS_OPTIMIZED_POLL to arch/Kconfig Ankur Arora
2024-08-30 22:28 ` [PATCH v7 04/10] cpuidle-haltpoll: define arch_haltpoll_want() Ankur Arora
2024-08-30 22:28 ` Ankur Arora [this message]
2024-08-30 22:28 ` [PATCH v7 06/10] cpuidle-haltpoll: condition on ARCH_CPUIDLE_HALTPOLL Ankur Arora
2024-08-30 22:28 ` [PATCH v7 07/10] arm64: define TIF_POLLING_NRFLAG Ankur Arora
2024-09-03 8:10 ` Will Deacon
2024-09-03 21:13 ` Ankur Arora
2024-08-30 22:28 ` [PATCH v7 08/10] arm64: idle: export arch_cpu_idle Ankur Arora
2024-09-03 8:14 ` Will Deacon
2024-08-30 22:28 ` [PATCH v7 09/10] arm64: support cpuidle-haltpoll Ankur Arora
2024-09-03 8:13 ` Will Deacon
2024-09-03 21:12 ` Ankur Arora
2024-08-30 22:28 ` [PATCH v7 10/10] cpuidle/poll_state: limit POLL_IDLE_RELAX_COUNT on arm64 Ankur Arora
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