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From:   Mihai Carabas <mihai.carabas@oracle.com>
Cc:     Joao Martins <joao.m.martins@oracle.com>,
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Subject: [PATCH 4/7] governors/haltpoll: Drop kvm_para_available() check
Date:   Wed,  9 Aug 2023 14:39:38 +0300
Message-Id: <1691581193-8416-5-git-send-email-mihai.carabas@oracle.com>
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From: Joao Martins <joao.m.martins@oracle.com>

This is duplicated already in the haltpoll idle driver,
and there's no need to re-check KVM guest availability in
the governor.

Either guests uses the module which explicitly selects this
governor, and given that it has the lowest rating of all governors
(menu=20,teo=19,ladder=10/25,haltpoll=9) means that unless it's
the only one compiled in, it won't be selected.

Dropping such check also allows to test haltpoll in baremetal.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
---
 drivers/cpuidle/governors/haltpoll.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/cpuidle/governors/haltpoll.c b/drivers/cpuidle/governors/haltpoll.c
index 1dff3a52917d..c9b69651d377 100644
--- a/drivers/cpuidle/governors/haltpoll.c
+++ b/drivers/cpuidle/governors/haltpoll.c
@@ -143,10 +143,7 @@ static int haltpoll_enable_device(struct cpuidle_driver *drv,
 
 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);
-- 
1.8.3.1