diff mbox series

[v4,3/8] governors/haltpoll: Drop kvm_para_available() check

Message ID 1707982910-27680-4-git-send-email-mihai.carabas@oracle.com (mailing list archive)
State New, archived
Headers show
Series [v4,1/8] x86: Move ARCH_HAS_CPU_RELAX to arch | expand

Commit Message

Mihai Carabas Feb. 15, 2024, 7:41 a.m. UTC 
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>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
---
 drivers/cpuidle/governors/haltpoll.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

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);