linux-kernel - [PATCH] KVM: introduce vm's max_halt_poll

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Message-ID: <20240508184743778PSWkv_r8dMoye7WmZ7enP@zte.com.cn>
Date: Wed, 8 May 2024 18:47:43 +0800 (CST)
From: <cheng.lin130@....com.cn>
To: <pbonzini@...hat.com>
Cc: <kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jiang.yong5@....com.cn>, <wang.liang82@....com.cn>,
        <jiang.xuexin@....com.cn>
Subject: [PATCH] KVM: introduce vm's max_halt_poll_ns to debugfs

From: Cheng Lin <cheng.lin130@....com.cn>

Introduce vm's max_halt_poll_ns and override_halt_poll_ns to
debugfs. Provide a way to check and modify them.

Signed-off-by: Cheng Lin <cheng.lin130@....com.cn>
---
 virt/kvm/kvm_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index ff0a20565..60dae952c 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1151,6 +1151,11 @@ static int kvm_create_vm_debugfs(struct kvm *kvm, const char *fdname)
 				    &stat_fops_per_vm);
 	}

+	debugfs_create_bool("override_halt_poll_ns", 0444, kvm->debugfs_dentry,
+			    &kvm->override_halt_poll_ns);
+	debugfs_create_u32("max_halt_poll_ns", 0644, kvm->debugfs_dentry,
+			   &kvm->max_halt_poll_ns);
+
 	kvm_arch_create_vm_debugfs(kvm);
 	return 0;
 out_err:
-- 
2.18.1