From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, David Woodhouse <dwmw2@infradead.org>, Andrew Cooper <andrew.cooper3@citrix.com>, Brian Gerst <brgerst@gmail.com>, Arjan van de Veen <arjan@linux.intel.com>, Paolo Bonzini <pbonzini@redhat.com>, Paul McKenney <paulmck@kernel.org>, Tom Lendacky <thomas.lendacky@amd.com>, Sean Christopherson <seanjc@google.com>, Oleksandr Natalenko <oleksandr@natalenko.name>, Paul Menzel <pmenzel@molgen.mpg.de>, "Guilherme G. Piccoli" <gpiccoli@igalia.com>, Piotr Gorski <lucjan.lucjanov@gmail.com>, Usama Arif <usama.arif@bytedance.com>, Juergen Gross <jgross@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, xen-devel@lists.xenproject.org, Russell King <linux@armlinux.org.uk>, Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>, linux-csky@vger.kernel.org, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, linux-mips@vger.kernel.org, "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>, Helge Deller <deller@gmx.de>, linux-parisc@vger.kernel.org, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, linux-riscv@lists.infradead.org, Mark Rutland <mark.rutland@arm.com>, Sabin Rapan <sabrapan@amazon.com>, "Michael Kelley (LINUX)" <mikelley@microsoft.com>, Ross Philipson <ross.philipson@oracle.com> Subject: [patch V4 23/37] arm64: smp: Switch to hotplug core state synchronization Date: Fri, 12 May 2023 23:07:33 +0200 (CEST) [thread overview] Message-ID: <20230512205256.690926018@linutronix.de> (raw) In-Reply-To: 20230512203426.452963764@linutronix.de From: Thomas Gleixner <tglx@linutronix.de> Switch to the CPU hotplug core state tracking and synchronization mechanim. No functional change intended. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Michael Kelley <mikelley@microsoft.com> --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/smp.h | 2 +- arch/arm64/kernel/smp.c | 14 +++++--------- 3 files changed, 7 insertions(+), 10 deletions(-) --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -222,6 +222,7 @@ config ARM64 select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_GENERIC_VDSO + select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select IRQ_DOMAIN select IRQ_FORCED_THREADING select KASAN_VMALLOC if KASAN --- a/arch/arm64/include/asm/smp.h +++ b/arch/arm64/include/asm/smp.h @@ -99,7 +99,7 @@ static inline void arch_send_wakeup_ipi_ extern int __cpu_disable(void); -extern void __cpu_die(unsigned int cpu); +static inline void __cpu_die(unsigned int cpu) { } extern void __noreturn cpu_die(void); extern void __noreturn cpu_die_early(void); --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -332,17 +332,13 @@ static int op_cpu_kill(unsigned int cpu) } /* - * called on the thread which is asking for a CPU to be shutdown - - * waits until shutdown has completed, or it is timed out. + * Called on the thread which is asking for a CPU to be shutdown after the + * shutdown completed. */ -void __cpu_die(unsigned int cpu) +void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu) { int err; - if (!cpu_wait_death(cpu, 5)) { - pr_crit("CPU%u: cpu didn't die\n", cpu); - return; - } pr_debug("CPU%u: shutdown\n", cpu); /* @@ -369,8 +365,8 @@ void __noreturn cpu_die(void) local_daif_mask(); - /* Tell __cpu_die() that this CPU is now safe to dispose of */ - (void)cpu_report_death(); + /* Tell cpuhp_bp_sync_dead() that this CPU is now safe to dispose of */ + cpuhp_ap_report_dead(); /* * Actually shutdown the CPU. This must never fail. The specific hotplug
WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, David Woodhouse <dwmw2@infradead.org>, Andrew Cooper <andrew.cooper3@citrix.com>, Brian Gerst <brgerst@gmail.com>, Arjan van de Veen <arjan@linux.intel.com>, Paolo Bonzini <pbonzini@redhat.com>, Paul McKenney <paulmck@kernel.org>, Tom Lendacky <thomas.lendacky@amd.com>, Sean Christopherson <seanjc@google.com>, Oleksandr Natalenko <oleksandr@natalenko.name>, Paul Menzel <pmenzel@molgen.mpg.de>, "Guilherme G. Piccoli" <gpiccoli@igalia.com>, Piotr Gorski <lucjan.lucjanov@gmail.com>, Usama Arif <usama.arif@bytedance.com>, Juergen Gross <jgross@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, xen-devel@lists.xenproject.org, Russell King <linux@armlinux.org.uk>, Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Guo Ren <guoren@kernel.org>, linux-csky@vger.kernel.org, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, linux-mips@vger.kernel.org, "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>, Helge Deller <deller@gmx.de>, linux-parisc@vger.kernel.org, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, linux-riscv@lists.infradead.org, Mark Rutland <mark.rutland@arm.com>, Sabin Rapan <sabrapan@amazon.com>, "Michael Kelley (LINUX)" <mikelley@microsoft.com>, Ross Philipson <ross.philipson@oracle.com> Subject: [patch V4 23/37] arm64: smp: Switch to hotplug core state synchronization Date: Fri, 12 May 2023 23:07:33 +0200 (CEST) [thread overview] Message-ID: <20230512205256.690926018@linutronix.de> (raw) In-Reply-To: 20230512203426.452963764@linutronix.de From: Thomas Gleixner <tglx@linutronix.de> Switch to the CPU hotplug core state tracking and synchronization mechanim. No functional change intended. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Michael Kelley <mikelley@microsoft.com> --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/smp.h | 2 +- arch/arm64/kernel/smp.c | 14 +++++--------- 3 files changed, 7 insertions(+), 10 deletions(-) --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -222,6 +222,7 @@ config ARM64 select HAVE_KPROBES select HAVE_KRETPROBES select HAVE_GENERIC_VDSO + select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU select IRQ_DOMAIN select IRQ_FORCED_THREADING select KASAN_VMALLOC if KASAN --- a/arch/arm64/include/asm/smp.h +++ b/arch/arm64/include/asm/smp.h @@ -99,7 +99,7 @@ static inline void arch_send_wakeup_ipi_ extern int __cpu_disable(void); -extern void __cpu_die(unsigned int cpu); +static inline void __cpu_die(unsigned int cpu) { } extern void __noreturn cpu_die(void); extern void __noreturn cpu_die_early(void); --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -332,17 +332,13 @@ static int op_cpu_kill(unsigned int cpu) } /* - * called on the thread which is asking for a CPU to be shutdown - - * waits until shutdown has completed, or it is timed out. + * Called on the thread which is asking for a CPU to be shutdown after the + * shutdown completed. */ -void __cpu_die(unsigned int cpu) +void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu) { int err; - if (!cpu_wait_death(cpu, 5)) { - pr_crit("CPU%u: cpu didn't die\n", cpu); - return; - } pr_debug("CPU%u: shutdown\n", cpu); /* @@ -369,8 +365,8 @@ void __noreturn cpu_die(void) local_daif_mask(); - /* Tell __cpu_die() that this CPU is now safe to dispose of */ - (void)cpu_report_death(); + /* Tell cpuhp_bp_sync_dead() that this CPU is now safe to dispose of */ + cpuhp_ap_report_dead(); /* * Actually shutdown the CPU. This must never fail. The specific hotplug _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2023-05-12 21:10 UTC|newest] Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-05-12 21:06 [patch V4 00/37] cpu/hotplug, x86: Reworked parallel CPU bringup Thomas Gleixner 2023-05-12 21:06 ` Thomas Gleixner 2023-05-12 21:06 ` [patch V4 01/37] x86/smpboot: Cleanup topology_phys_to_logical_pkg()/die() Thomas Gleixner 2023-05-12 21:06 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 02/37] cpu/hotplug: Mark arch_disable_smp_support() and bringup_nonboot_cpus() __init Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 03/37] x86/smpboot: Avoid pointless delay calibration if TSC is synchronized Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 04/37] x86/smpboot: Rename start_cpu0() to soft_restart_cpu() Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-06-12 23:45 ` [patch V4 04/37] " Philippe Mathieu-Daudé 2023-06-12 23:45 ` Philippe Mathieu-Daudé 2023-06-12 23:45 ` Philippe Mathieu-Daudé 2023-05-12 21:07 ` [patch V4 05/37] x86/topology: Remove CPU0 hotplug option Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 06/37] x86/smpboot: Remove the CPU0 hotplug kludge Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 07/37] x86/smpboot: Restrict soft_restart_cpu() to SEV Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-06-12 23:46 ` [patch V4 07/37] " Philippe Mathieu-Daudé 2023-06-12 23:46 ` Philippe Mathieu-Daudé 2023-06-12 23:46 ` Philippe Mathieu-Daudé 2023-05-12 21:07 ` [patch V4 08/37] x86/smpboot: Remove unnecessary barrier() Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 09/37] x86/smpboot: Split up native_cpu_up() into separate phases and document them Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for David Woodhouse 2023-05-12 21:07 ` [patch V4 10/37] x86/smpboot: Get rid of cpu_init_secondary() Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-06-12 23:49 ` [patch V4 10/37] " Philippe Mathieu-Daudé 2023-06-12 23:49 ` Philippe Mathieu-Daudé 2023-06-12 23:49 ` Philippe Mathieu-Daudé 2023-05-12 21:07 ` [patch V4 11/37] x86/cpu/cacheinfo: Remove cpu_callout_mask dependency Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 12/37] x86/smpboot: Move synchronization masks to SMP boot code Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 13/37] x86/smpboot: Make TSC synchronization function call based Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:10 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 14/37] x86/smpboot: Remove cpu_callin_mask Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 15/37] cpu/hotplug: Rework sparse_irq locking in bringup_cpu() Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 16/37] x86/smpboot: Remove wait for cpu_online() Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 17/37] x86/xen/smp_pv: Remove wait for CPU online Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 18/37] x86/xen/hvm: Get rid of DEAD_FROZEN handling Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 19/37] cpu/hotplug: Add CPU state tracking and synchronization Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 20/37] x86/smpboot: Switch to hotplug core state synchronization Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 21/37] cpu/hotplug: Remove cpu_report_state() and related unused cruft Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 22/37] ARM: smp: Switch to hotplug core state synchronization Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner [this message] 2023-05-12 21:07 ` [patch V4 23/37] arm64: " Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 24/37] csky/smp: " Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 25/37] MIPS: SMP_CPS: " Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 26/37] parisc: " Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 27/37] riscv: " Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 28/37] cpu/hotplug: Remove unused state functions Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 29/37] cpu/hotplug: Reset task stack state in _cpu_up() Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for David Woodhouse 2023-05-12 21:07 ` [patch V4 30/37] cpu/hotplug: Provide a split up CPUHP_BRINGUP mechanism Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 31/37] x86/smpboot: Enable split CPU startup Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 32/37] x86/apic: Provide cpu_primary_thread mask Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 33/37] cpu/hotplug: Allow "parallel" bringup up to CPUHP_BP_KICK_AP_STATE Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-22 19:45 ` [patch V4 33/37] " Mark Brown 2023-05-22 19:45 ` Mark Brown 2023-05-22 19:45 ` Mark Brown 2023-05-22 21:04 ` Thomas Gleixner 2023-05-22 21:04 ` Thomas Gleixner 2023-05-22 21:04 ` Thomas Gleixner 2023-05-22 22:27 ` Mark Brown 2023-05-22 22:27 ` Mark Brown 2023-05-22 22:27 ` Mark Brown 2023-05-22 23:12 ` Thomas Gleixner 2023-05-22 23:12 ` Thomas Gleixner 2023-05-22 23:12 ` Thomas Gleixner 2023-05-23 10:19 ` Mark Brown 2023-05-23 10:19 ` Mark Brown 2023-05-23 10:19 ` Mark Brown 2023-05-23 16:13 ` [tip: smp/core] cpu/hotplug: Fix off by one in cpuhp_bringup_mask() tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 34/37] x86/apic: Save the APIC virtual base address Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 35/37] x86/smpboot: Implement a bit spinlock to protect the realmode stack Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-12 21:07 ` [patch V4 36/37] x86/smpboot: Support parallel startup of secondary CPUs Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for David Woodhouse 2023-05-19 16:28 ` [patch V4 36/37] " Jeffrey Hugo 2023-05-19 16:28 ` Jeffrey Hugo 2023-05-19 16:28 ` Jeffrey Hugo 2023-05-19 16:57 ` Andrew Cooper 2023-05-19 16:57 ` Andrew Cooper 2023-05-19 16:57 ` Andrew Cooper 2023-05-19 17:44 ` Jeffrey Hugo 2023-05-19 17:44 ` Jeffrey Hugo 2023-05-19 17:44 ` Jeffrey Hugo 2023-05-12 21:07 ` [patch V4 37/37] x86/smpboot/64: Implement arch_cpuhp_init_parallel_bringup() and enable it Thomas Gleixner 2023-05-12 21:07 ` Thomas Gleixner 2023-05-15 12:00 ` Peter Zijlstra 2023-05-15 12:00 ` Peter Zijlstra 2023-05-15 12:00 ` Peter Zijlstra 2023-05-16 9:09 ` [tip: smp/core] " tip-bot2 for Thomas Gleixner 2023-05-13 18:32 ` [patch V4 00/37] cpu/hotplug, x86: Reworked parallel CPU bringup Oleksandr Natalenko 2023-05-13 18:32 ` Oleksandr Natalenko 2023-05-13 21:00 ` Helge Deller 2023-05-13 21:00 ` Helge Deller 2023-05-14 21:48 ` Guilherme G. Piccoli 2023-05-14 21:48 ` Guilherme G. Piccoli 2023-05-22 10:57 ` [PATCH] x86/apic: Fix use of X{,2}APIC_ENABLE in asm with older binutils Andrew Cooper 2023-05-22 10:57 ` Andrew Cooper 2023-05-22 10:57 ` Andrew Cooper 2023-05-22 11:17 ` Russell King (Oracle) 2023-05-22 11:17 ` Russell King (Oracle) 2023-05-22 11:17 ` Russell King (Oracle) 2023-05-22 12:12 ` [tip: smp/core] " tip-bot2 for Andrew Cooper
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