linux-kernel - [tip: smp/core] cpu/hotplug: Increase the number of dynamic states

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Date: Wed, 20 Dec 2023 15:35:08 -0000
From: "tip-bot2 for xiaoming Wang" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Xiaoming Wang <xiaoming.wang@...el.com>,
 Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: smp/core] cpu/hotplug: Increase the number of dynamic states

The following commit has been merged into the smp/core branch of tip:

Commit-ID:     fe22944cf05ede8e6f841cfecdb7093a53a3d9b3
Gitweb:        https://git.kernel.org/tip/fe22944cf05ede8e6f841cfecdb7093a53a3d9b3
Author:        xiaoming Wang <xiaoming.wang@...el.com>
AuthorDate:    Tue, 19 Dec 2023 11:34:11 +08:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 20 Dec 2023 16:25:15 +01:00

cpu/hotplug: Increase the number of dynamic states

The dynamically allocatable hotplug state space can be exhausted by
the existing drivers and infrastructure which install CPU hotplug
states dynamically. That prevents new drivers and infrastructure from
installing dynamically allocated states.

Increase the size of the CPUHP_AP_ONLINE_DYN state by 10 to make
room.

Signed-off-by: Xiaoming Wang <xiaoming.wang@...el.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20231219033411.816100-1-xiaoming.wang@intel.com
---
 include/linux/cpuhotplug.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index af6c21a..8bd454d 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -239,7 +239,7 @@ enum cpuhp_state {
 	CPUHP_AP_RCUTREE_ONLINE,
 	CPUHP_AP_BASE_CACHEINFO_ONLINE,
 	CPUHP_AP_ONLINE_DYN,
-	CPUHP_AP_ONLINE_DYN_END		= CPUHP_AP_ONLINE_DYN + 30,
+	CPUHP_AP_ONLINE_DYN_END		= CPUHP_AP_ONLINE_DYN + 40,
 	CPUHP_AP_X86_HPET_ONLINE,
 	CPUHP_AP_X86_KVM_CLK_ONLINE,
 	CPUHP_AP_ACTIVE,