From nobody Sat Sep 26 11:01:44 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EBF2E3E9C2F; Wed, 2 Sep 2026 08:33:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788337990; cv=none; b=iwweW+GOoVL9ViCrGda1VSvr3Tf4lWzq33bSZkauOqKtn1fVkVE+O5XRj9uj9ME8QpDPv6n1dUz9YKiWml1Vbp6t0c7SZtr0hFdbgskzgT/8+o/9Cr6CYbaFEE3xajkf/puVShErkOtxhR0KUpJIKDX/NN4DCzOMy/xnVgvYt2k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788337990; c=relaxed/simple; bh=Wf1kZhjmjzYL3GYDIGm8PkSm56+hYMVtzw+1fDqW27o=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=n3RK73Y3+3qqTNWu7oi0uHQeEhpm6sidgrzJVeFE3mbnsaKvw+tI+LL2VTcm58C+r+koF7RWDCkQ05VGwGLOBB6gIjDxi+26Vzfeaw8yHUJveeVHML2SPn3DsCks7k6jR7JhawXKOFzl+BK1XGC9IpEreRgLtF0Ui7Q7KNKg9tQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=bjx6rOMu; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=zBeYCSY8; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="bjx6rOMu"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="zBeYCSY8" Date: Wed, 02 Sep 2026 08:33:04 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1788337985; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lXhHnapD0Dn91khtat/91g7n3KJW8Wl/WYTN08dyBNU=; b=bjx6rOMu234YWMiKbj3/J4148mMSaGpJZGWCa0aURV40Yrko0tUB9gp96PlCG0jQiKsXkJ v5i+jjnzIYAEsaP0rjD5PQChx/iEZc2Y83GLqccNoWYbEsP0RJ7+Wzm6tZh+YMEBiFpylP ms+wT6p6b+TH1/DPLrfxtZNN0Dgb6ZHJD1OFQCsT99HvNW8zh7Wv8BvAiDSmNnnCGARnNa Q2mkgEtiX1kyTV/v+v3xjbpfuwlBJuvW+zvmj9LS/e0y97NJKSdOPAFu2xr2UEdM6KvvVj H0BPLTJHqybKt5mTrvOvRY5OI5+ge8JJURI5lqLNx1+J9mYzO0V6T8QqGfPAJQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1788337985; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lXhHnapD0Dn91khtat/91g7n3KJW8Wl/WYTN08dyBNU=; b=zBeYCSY8Vbwkj4hl5nWLuYRWaMpE/Oaq0MdOL0ysDWYx1ybyTXm5T+UQPhwpdyUxARCT22 i1z392LDm7SsEeBQ== From: "tip-bot2 for Hongyan Xia" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: sched/core] sched: Convert paravirt_steal to new static key APIs Cc: Hongyan Xia , "Peter Zijlstra (Intel)" , Juergen Gross , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260819081207.12150-1-hongyan.xia@transsion.com> References: <20260819081207.12150-1-hongyan.xia@transsion.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <178833798427.3717435.12664289845877600702.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the sched/core branch of tip: Commit-ID: a5576ebce9201e2abc820348a494e666de8efe64 Gitweb: https://git.kernel.org/tip/a5576ebce9201e2abc820348a494e666d= e8efe64 Author: Hongyan Xia AuthorDate: Wed, 19 Aug 2026 08:12:09=20 Committer: Peter Zijlstra CommitterDate: Wed, 02 Sep 2026 10:28:24 +02:00 sched: Convert paravirt_steal to new static key APIs paravirt_steal_rq_enabled and paravirt_steal_enabled use raw static_key APIs which are now deprecated. Use the new API instead. No functional change. Signed-off-by: Hongyan Xia Signed-off-by: Peter Zijlstra (Intel) Acked-by: Juergen Gross Link: https://patch.msgid.link/20260819081207.12150-1-hongyan.xia@transsion= .com --- arch/arm64/kernel/paravirt.c | 4 ++-- arch/loongarch/kernel/paravirt.c | 4 ++-- arch/powerpc/platforms/pseries/setup.c | 4 ++-- arch/riscv/kernel/paravirt.c | 4 ++-- arch/x86/kernel/cpu/vmware.c | 4 ++-- arch/x86/kernel/kvm.c | 4 ++-- drivers/xen/time.c | 4 ++-- include/linux/sched/cputime.h | 6 +++--- kernel/sched/core.c | 4 ++-- kernel/sched/cputime.c | 4 ++-- 10 files changed, 21 insertions(+), 21 deletions(-) diff --git a/arch/arm64/kernel/paravirt.c b/arch/arm64/kernel/paravirt.c index 572efb9..30bf61d 100644 --- a/arch/arm64/kernel/paravirt.c +++ b/arch/arm64/kernel/paravirt.c @@ -157,9 +157,9 @@ int __init pv_time_init(void) =20 static_call_update(pv_steal_clock, para_steal_clock); =20 - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); if (steal_acc) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); =20 pr_info("using stolen time PV\n"); =20 diff --git a/arch/loongarch/kernel/paravirt.c b/arch/loongarch/kernel/parav= irt.c index 10821cc..e8965a3 100644 --- a/arch/loongarch/kernel/paravirt.c +++ b/arch/loongarch/kernel/paravirt.c @@ -308,10 +308,10 @@ int __init pv_time_init(void) =20 static_call_update(pv_steal_clock, paravt_steal_clock); =20 - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); #ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING if (steal_acc) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); #endif =20 if (static_key_enabled(&virt_preempt_key)) diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platform= s/pseries/setup.c index f29e754..c181df4 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -876,9 +876,9 @@ static void __init pSeries_setup_arch(void) static_branch_enable(&shared_processor); pv_spinlocks_init(); #ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); if (steal_acc) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); #endif } =20 diff --git a/arch/riscv/kernel/paravirt.c b/arch/riscv/kernel/paravirt.c index 5f56be7..9c13a6f 100644 --- a/arch/riscv/kernel/paravirt.c +++ b/arch/riscv/kernel/paravirt.c @@ -116,9 +116,9 @@ int __init pv_time_init(void) =20 static_call_update(pv_steal_clock, pv_time_steal_clock); =20 - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); if (steal_acc) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); =20 pr_info("Computing paravirt steal-time\n"); =20 diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c index 34b7357..f7ab9e7 100644 --- a/arch/x86/kernel/cpu/vmware.c +++ b/arch/x86/kernel/cpu/vmware.c @@ -328,9 +328,9 @@ static int vmware_cpu_down_prepare(unsigned int cpu) static __init int activate_jump_labels(void) { if (has_steal_clock) { - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); if (steal_acc) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); } =20 return 0; diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 6b0a586..2ce01fd 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -1054,9 +1054,9 @@ const __initconst struct hypervisor_x86 x86_hyper_kvm= =3D { static __init int activate_jump_labels(void) { if (has_steal_clock) { - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); if (steal_acc) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); } =20 return 0; diff --git a/drivers/xen/time.c b/drivers/xen/time.c index a2be0a4..a02d48a 100644 --- a/drivers/xen/time.c +++ b/drivers/xen/time.c @@ -169,7 +169,7 @@ void __init xen_time_setup_guest(void) =20 static_call_update(pv_steal_clock, xen_steal_clock); =20 - static_key_slow_inc(¶virt_steal_enabled); + static_branch_inc(¶virt_steal_enabled); if (xen_runstate_remote) - static_key_slow_inc(¶virt_steal_rq_enabled); + static_branch_inc(¶virt_steal_rq_enabled); } diff --git a/include/linux/sched/cputime.h b/include/linux/sched/cputime.h index e90efaf..6941264 100644 --- a/include/linux/sched/cputime.h +++ b/include/linux/sched/cputime.h @@ -182,9 +182,9 @@ extern unsigned long long task_sched_runtime(struct task_struct *task); =20 #ifdef CONFIG_PARAVIRT -struct static_key; -extern struct static_key paravirt_steal_enabled; -extern struct static_key paravirt_steal_rq_enabled; +#include +DECLARE_STATIC_KEY_FALSE(paravirt_steal_enabled); +DECLARE_STATIC_KEY_FALSE(paravirt_steal_rq_enabled); =20 #ifdef CONFIG_HAVE_PV_STEAL_CLOCK_GEN u64 dummy_steal_clock(int cpu); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index c9dd6f4..4e97766 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -805,7 +805,7 @@ struct rq *_task_rq_lock(struct task_struct *p, struct = rq_flags *rf) =20 /* Use CONFIG_PARAVIRT as this will avoid more #ifdef in arch code. */ #ifdef CONFIG_PARAVIRT -struct static_key paravirt_steal_rq_enabled; +DEFINE_STATIC_KEY_FALSE(paravirt_steal_rq_enabled); #endif =20 static void update_rq_clock_task(struct rq *rq, s64 delta) @@ -844,7 +844,7 @@ static void update_rq_clock_task(struct rq *rq, s64 del= ta) } #endif #ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING - if (static_key_false((¶virt_steal_rq_enabled))) { + if (static_branch_unlikely(¶virt_steal_rq_enabled)) { u64 prev_steal; =20 steal =3D prev_steal =3D paravirt_steal_clock(cpu_of(rq)); diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 06bddaa..f16970c 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -255,7 +255,7 @@ void __account_forceidle_time(struct task_struct *p, u6= 4 delta) * occasion account more time than the calling functions think elapsed. */ #ifdef CONFIG_PARAVIRT -struct static_key paravirt_steal_enabled; +DEFINE_STATIC_KEY_FALSE(paravirt_steal_enabled); =20 #ifdef CONFIG_HAVE_PV_STEAL_CLOCK_GEN static u64 native_steal_clock(int cpu) @@ -270,7 +270,7 @@ DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock); static __always_inline u64 steal_account_process_time(u64 maxtime) { #ifdef CONFIG_PARAVIRT - if (static_key_false(¶virt_steal_enabled)) { + if (static_branch_unlikely(¶virt_steal_enabled)) { u64 steal; =20 steal =3D paravirt_steal_clock(smp_processor_id());