linux-kernel - [tip: sched/core] kvm: Select SCHED_INFO instead of TASK_DELAY

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Message-ID: <162081530990.29796.11497571349080467949.tip-bot2@tip-bot2>
Date:   Wed, 12 May 2021 10:28:29 -0000
From:   "tip-bot2 for Peter Zijlstra" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Marc Zyngier <maz@...nel.org>,
        Balbir Singh <bsingharora@...il.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: sched/core] kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT

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

Commit-ID:     63b3f96e1a989846a5a521d4fbef4bc86406929d
Gitweb:        https://git.kernel.org/tip/63b3f96e1a989846a5a521d4fbef4bc86406929d
Author:        Peter Zijlstra <peterz@...radead.org>
AuthorDate:    Tue, 04 May 2021 22:43:39 +02:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 12 May 2021 11:43:24 +02:00

kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT

AFAICT KVM only relies on SCHED_INFO. Nothing uses the p->delays data
that belongs to TASK_DELAY_ACCT.

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Paolo Bonzini <pbonzini@...hat.com>
Acked-by: Marc Zyngier <maz@...nel.org>
Acked-by: Balbir Singh <bsingharora@...il.com>
Link: https://lkml.kernel.org/r/20210505111525.187225172@infradead.org
---
 arch/arm64/kvm/Kconfig | 5 +----
 arch/x86/kvm/Kconfig   | 5 +----
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 3964acf..a4eba09 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -20,8 +20,6 @@ if VIRTUALIZATION
 menuconfig KVM
 	bool "Kernel-based Virtual Machine (KVM) support"
 	depends on OF
-	# for TASKSTATS/TASK_DELAY_ACCT:
-	depends on NET && MULTIUSER
 	select MMU_NOTIFIER
 	select PREEMPT_NOTIFIERS
 	select HAVE_KVM_CPU_RELAX_INTERCEPT
@@ -38,8 +36,7 @@ menuconfig KVM
 	select IRQ_BYPASS_MANAGER
 	select HAVE_KVM_IRQ_BYPASS
 	select HAVE_KVM_VCPU_RUN_PID_CHANGE
-	select TASKSTATS
-	select TASK_DELAY_ACCT
+	select SCHED_INFO
 	help
 	  Support hosting virtualized guest machines.
 
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index f6b93a3..fb8efb3 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -22,8 +22,6 @@ config KVM
 	tristate "Kernel-based Virtual Machine (KVM) support"
 	depends on HAVE_KVM
 	depends on HIGH_RES_TIMERS
-	# for TASKSTATS/TASK_DELAY_ACCT:
-	depends on NET && MULTIUSER
 	depends on X86_LOCAL_APIC
 	select PREEMPT_NOTIFIERS
 	select MMU_NOTIFIER
@@ -36,8 +34,7 @@ config KVM
 	select KVM_ASYNC_PF
 	select USER_RETURN_NOTIFIER
 	select KVM_MMIO
-	select TASKSTATS
-	select TASK_DELAY_ACCT
+	select SCHED_INFO
 	select PERF_EVENTS
 	select HAVE_KVM_MSI
 	select HAVE_KVM_CPU_RELAX_INTERCEPT