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charset="utf-8" Callback arch_vtime_task_switch() is only defined when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is selected. Yet, the function prototype forward declaration is present for CONFIG_VIRT_CPU_ACCOUNTING_GEN variant. Remove it. Reviewed-by: Frederic Weisbecker Signed-off-by: Alexander Gordeev Reviewed-by: Nicholas Piggin --- include/linux/vtime.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 3684487d01e1..593466ceebed 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -18,7 +18,6 @@ extern void vtime_account_idle(struct task_struct *tsk); #endif /* !CONFIG_VIRT_CPU_ACCOUNTING */ =20 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN -extern void arch_vtime_task_switch(struct task_struct *tsk); extern void vtime_user_enter(struct task_struct *tsk); extern void vtime_user_exit(struct task_struct *tsk); extern void vtime_guest_enter(struct task_struct *tsk); --=20 2.40.1 From nobody Sat Feb 7 21:15:01 2026 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 262A436B0A; 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charset="utf-8" The generic vtime_task_switch() implementation gets built only if __ARCH_HAS_VTIME_TASK_SWITCH is not defined, but requires an architecture to implement arch_vtime_task_switch() callback at the same time, which is confusing. Further, arch_vtime_task_switch() is implemented for 32-bit PowerPC architecture only and vtime_task_switch() generic variant is rather superfluous. Simplify the whole vtime_task_switch() wiring by moving the existing generic implementation to PowerPC. Reviewed-by: Frederic Weisbecker Signed-off-by: Alexander Gordeev Reviewed-by: Nicholas Piggin --- arch/powerpc/include/asm/cputime.h | 13 ------------- arch/powerpc/kernel/time.c | 22 ++++++++++++++++++++++ kernel/sched/cputime.c | 13 ------------- 3 files changed, 22 insertions(+), 26 deletions(-) diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/= cputime.h index 4961fb38e438..aff858ca99c0 100644 --- a/arch/powerpc/include/asm/cputime.h +++ b/arch/powerpc/include/asm/cputime.h @@ -32,23 +32,10 @@ #ifdef CONFIG_PPC64 #define get_accounting(tsk) (&get_paca()->accounting) #define raw_get_accounting(tsk) (&local_paca->accounting) -static inline void arch_vtime_task_switch(struct task_struct *tsk) { } =20 #else #define get_accounting(tsk) (&task_thread_info(tsk)->accounting) #define raw_get_accounting(tsk) get_accounting(tsk) -/* - * Called from the context switch with interrupts disabled, to charge all - * accumulated times to the current process, and to prepare accounting on - * the next process. - */ -static inline void arch_vtime_task_switch(struct task_struct *prev) -{ - struct cpu_accounting_data *acct =3D get_accounting(current); - struct cpu_accounting_data *acct0 =3D get_accounting(prev); - - acct->starttime =3D acct0->starttime; -} #endif =20 /* diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index df20cf201f74..c0fdc6d94fee 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -354,6 +354,28 @@ void vtime_flush(struct task_struct *tsk) acct->hardirq_time =3D 0; acct->softirq_time =3D 0; } + +/* + * Called from the context switch with interrupts disabled, to charge all + * accumulated times to the current process, and to prepare accounting on + * the next process. + */ +void vtime_task_switch(struct task_struct *prev) +{ + if (is_idle_task(prev)) + vtime_account_idle(prev); + else + vtime_account_kernel(prev); + + vtime_flush(prev); + + if (!IS_ENABLED(CONFIG_PPC64)) { + struct cpu_accounting_data *acct =3D get_accounting(current); + struct cpu_accounting_data *acct0 =3D get_accounting(prev); + + acct->starttime =3D acct0->starttime; + } +} #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ =20 void __no_kcsan __delay(unsigned long loops) diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index af7952f12e6c..aa48b2ec879d 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -424,19 +424,6 @@ static inline void irqtime_account_process_tick(struct= task_struct *p, int user_ */ #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE =20 -# ifndef __ARCH_HAS_VTIME_TASK_SWITCH -void vtime_task_switch(struct task_struct *prev) -{ - if (is_idle_task(prev)) - vtime_account_idle(prev); 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charset="utf-8" __ARCH_HAS_VTIME_TASK_SWITCH macro is not used anymore. Reviewed-by: Frederic Weisbecker Acked-by: Heiko Carstens Signed-off-by: Alexander Gordeev Acked-by: Nicholas Piggin --- arch/s390/include/asm/vtime.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/s390/include/asm/vtime.h b/arch/s390/include/asm/vtime.h index fe17e448c0c5..561c91c1a87c 100644 --- a/arch/s390/include/asm/vtime.h +++ b/arch/s390/include/asm/vtime.h @@ -2,8 +2,6 @@ #ifndef _S390_VTIME_H #define _S390_VTIME_H =20 -#define __ARCH_HAS_VTIME_TASK_SWITCH - static inline void update_timer_sys(void) { S390_lowcore.system_timer +=3D S390_lowcore.last_update_timer - S390_lowc= ore.exit_timer; --=20 2.40.1 From nobody Sat Feb 7 21:15:01 2026 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 038093612A; Thu, 8 Feb 2024 20:16:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" update_timer_sys() and update_timer_mcck() are inlines used for CPU time accounting from the interrupt and machine-check handlers. These routines are specific to s390 architecture, but included via header implicitly. Avoid the extra loop and include header directly. Acked-by: Heiko Carstens Signed-off-by: Alexander Gordeev --- arch/s390/kernel/irq.c | 1 + arch/s390/kernel/nmi.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 6f71b0ce1068..259496fe0ef9 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -29,6 +29,7 @@ #include #include #include +#include #include "entry.h" =20 DEFINE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat); diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index 9ad44c26d1a2..4422a27faace 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -32,6 +32,7 @@ #include #include #include +#include #include =20 struct mcck_struct { --=20 2.40.1 From nobody Sat Feb 7 21:15:01 2026 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 6B818383BA; 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Thu, 8 Feb 2024 20:15:50 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EE8062004B; Thu, 8 Feb 2024 20:15:49 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DD48C20040; Thu, 8 Feb 2024 20:15:49 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTPS; Thu, 8 Feb 2024 20:15:49 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55669) id 8119FE1541; Thu, 8 Feb 2024 21:15:49 +0100 (CET) From: Alexander Gordeev To: Frederic Weisbecker , Ingo Molnar , Michael Ellerman , Nicholas Piggin , Heiko Carstens , Vasily Gorbik Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 5/5] sched/vtime: do not include header Date: Thu, 8 Feb 2024 21:15:49 +0100 Message-Id: X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: cE_iiBipX1nKYHLnLpahvenDMlutxuTG X-Proofpoint-ORIG-GUID: AAm_5AQcNpyFHo9NGIHcHS2xdJMFOVU- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-08_08,2024-02-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxlogscore=333 malwarescore=0 phishscore=0 mlxscore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 adultscore=0 priorityscore=1501 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402080108 Content-Type: text/plain; charset="utf-8" There is no architecture-specific code or data left that generic needs to know about. Thus, avoid the inclusion of header. Reviewed-by: Frederic Weisbecker Signed-off-by: Alexander Gordeev Acked-by: Nicholas Piggin --- arch/powerpc/include/asm/Kbuild | 1 - include/asm-generic/vtime.h | 1 - include/linux/vtime.h | 4 ---- 3 files changed, 6 deletions(-) delete mode 100644 include/asm-generic/vtime.h diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbu= ild index 61a8d5555cd7..e5fdc336c9b2 100644 --- a/arch/powerpc/include/asm/Kbuild +++ b/arch/powerpc/include/asm/Kbuild @@ -6,5 +6,4 @@ generic-y +=3D agp.h generic-y +=3D kvm_types.h generic-y +=3D mcs_spinlock.h generic-y +=3D qrwlock.h -generic-y +=3D vtime.h generic-y +=3D early_ioremap.h diff --git a/include/asm-generic/vtime.h b/include/asm-generic/vtime.h deleted file mode 100644 index b1a49677fe25..000000000000 --- a/include/asm-generic/vtime.h +++ /dev/null @@ -1 +0,0 @@ -/* no content, but patch(1) dislikes empty files */ diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 593466ceebed..29dd5b91dd7d 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -5,10 +5,6 @@ #include #include =20 -#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE -#include -#endif - /* * Common vtime APIs */ --=20 2.40.1