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, 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,
joao.m.martins@oracle.com, boris.ostrovsky@oracle.com,
konrad.wilk@oracle.com, ankur.a.arora@oracle.com
Subject: [PATCH 5/9] governors/haltpoll: drop kvm_para_available() check
Date: Tue, 30 Apr 2024 11:37:26 -0700 [thread overview]
Message-ID: <20240430183730.561960-6-ankur.a.arora@oracle.com> (raw)
In-Reply-To: <20240430183730.561960-1-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);
--
2.39.3
next prev parent reply other threads:[~2024-04-30 18:38 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-30 18:37 [PATCH 0/9] Enable haltpoll for arm64 Ankur Arora
2024-04-30 18:37 ` [PATCH 1/9] cpuidle: rename ARCH_HAS_CPU_RELAX to ARCH_HAS_OPTIMIZED_POLL Ankur Arora
2024-05-02 1:33 ` Christoph Lameter (Ampere)
2024-05-03 4:13 ` Ankur Arora
2024-05-03 17:07 ` Christoph Lameter (Ampere)
2024-05-06 21:27 ` Ankur Arora
2024-04-30 18:37 ` [PATCH 2/9] Kconfig: move ARCH_HAS_OPTIMIZED_POLL to arch/Kconfig Ankur Arora
2024-04-30 18:37 ` [PATCH 3/9] cpuidle-haltpoll: condition on ARCH_CPUIDLE_HALTPOLL Ankur Arora
2024-05-22 16:09 ` Joao Martins
2024-04-30 18:37 ` [PATCH 4/9] cpuidle-haltpoll: define arch_haltpoll_supported() Ankur Arora
2024-05-01 11:48 ` kernel test robot
2024-05-22 16:09 ` Joao Martins
2024-06-05 5:47 ` Ankur Arora
2024-04-30 18:37 ` Ankur Arora [this message]
2024-04-30 18:37 ` [PATCH 6/9] cpuidle/poll_state: poll via smp_cond_load_relaxed() Ankur Arora
2024-04-30 18:37 ` [PATCH 7/9] arm64: define TIF_POLLING_NRFLAG Ankur Arora
2024-04-30 18:37 ` [PATCH 8/9] arm64: support cpuidle-haltpoll Ankur Arora
2024-05-30 23:07 ` Okanovic, Haris
2024-06-04 23:09 ` Ankur Arora
2024-04-30 18:37 ` [PATCH 9/9] cpuidle/poll_state: limit POLL_IDLE_RELAX_COUNT on arm64 Ankur Arora
2024-04-30 18:56 ` [PATCH 0/9] Enable haltpoll for arm64 Ankur Arora
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