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From: Thomas Gleixner <tglx@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Jinjie Ruan <ruanjinjie@huawei.com>,
	catalin.marinas@arm.com, will@kernel.org,
	tsbogend@alpha.franken.de, pjw@kernel.org, palmer@dabbelt.com,
	aou@eecs.berkeley.edu, alex@ghiti.fr, mingo@redhat.com,
	bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
	kees@kernel.org, nathan@kernel.org, linusw@kernel.org,
	ojeda@kernel.org, david.kaplan@amd.com, lukas.bulwahn@redhat.com,
	ryan.roberts@arm.com, maz@kernel.org, timothy.hayes@arm.com,
	lpieralisi@kernel.org, thuth@redhat.com, oupton@kernel.org,
	yeoreum.yun@arm.com, miko.lenczewski@arm.com, broonie@kernel.org,
	kevin.brodsky@arm.com, james.clark@linaro.org, tabba@google.com,
	mrigendra.chaubey@gmail.com, arnd@arndb.de,
	anshuman.khandual@arm.com, x86@kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org,
	linux-riscv@lists.infradead.org
Subject: Re: [PATCH RFC 1/3] cpu/hotplug: Introduce CONFIG_PARALLEL_SMT_PRIMARY_FIRST
Date: Fri, 19 Jun 2026 21:27:11 +0200	[thread overview]
Message-ID: <875x3ecovk.ffs@fw13> (raw)
In-Reply-To: <20260619094130.GU49951@noisy.programming.kicks-ass.net>

On Fri, Jun 19 2026 at 11:41, Peter Zijlstra wrote:
> On Thu, Jun 18, 2026 at 05:17:03PM +0200, Thomas Gleixner wrote:
>
>> Something simple like the uncompiled below should just work, no?
>> 
>> ---
>> --- a/arch/Kconfig
>> +++ b/arch/Kconfig
>> @@ -102,6 +102,10 @@ config HOTPLUG_PARALLEL
>>  	bool
>>  	select HOTPLUG_SPLIT_STARTUP
>>  
>> +config HOTPLUG_PARALLEL_SMT
>> +	bool
>> +	select HOTPLUG_PARALLEL
>
> 	depends on ARCH_SUPPORTS_SCHED_SMT ?

Probably. Did not think about that as this has to be anyway selected by
the architecture.

WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gleixner <tglx@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Jinjie Ruan <ruanjinjie@huawei.com>,
	catalin.marinas@arm.com, will@kernel.org,
	tsbogend@alpha.franken.de, pjw@kernel.org, palmer@dabbelt.com,
	aou@eecs.berkeley.edu, alex@ghiti.fr, mingo@redhat.com,
	bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
	kees@kernel.org, nathan@kernel.org, linusw@kernel.org,
	ojeda@kernel.org, david.kaplan@amd.com, lukas.bulwahn@redhat.com,
	ryan.roberts@arm.com, maz@kernel.org, timothy.hayes@arm.com,
	lpieralisi@kernel.org, thuth@redhat.com, oupton@kernel.org,
	yeoreum.yun@arm.com, miko.lenczewski@arm.com, broonie@kernel.org,
	kevin.brodsky@arm.com, james.clark@linaro.org, tabba@google.com,
	mrigendra.chaubey@gmail.com, arnd@arndb.de,
	anshuman.khandual@arm.com, x86@kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org,
	linux-riscv@lists.infradead.org
Subject: Re: [PATCH RFC 1/3] cpu/hotplug: Introduce CONFIG_PARALLEL_SMT_PRIMARY_FIRST
Date: Fri, 19 Jun 2026 21:27:11 +0200	[thread overview]
Message-ID: <875x3ecovk.ffs@fw13> (raw)
In-Reply-To: <20260619094130.GU49951@noisy.programming.kicks-ass.net>

On Fri, Jun 19 2026 at 11:41, Peter Zijlstra wrote:
> On Thu, Jun 18, 2026 at 05:17:03PM +0200, Thomas Gleixner wrote:
>
>> Something simple like the uncompiled below should just work, no?
>> 
>> ---
>> --- a/arch/Kconfig
>> +++ b/arch/Kconfig
>> @@ -102,6 +102,10 @@ config HOTPLUG_PARALLEL
>>  	bool
>>  	select HOTPLUG_SPLIT_STARTUP
>>  
>> +config HOTPLUG_PARALLEL_SMT
>> +	bool
>> +	select HOTPLUG_PARALLEL
>
> 	depends on ARCH_SUPPORTS_SCHED_SMT ?

Probably. Did not think about that as this has to be anyway selected by
the architecture.

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  reply	other threads:[~2026-06-19 19:27 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-11 13:38 [PATCH RFC 0/3] arm64: Add HOTPLUG_PARALLEL support for secondary CPUs Jinjie Ruan
2026-06-11 13:38 ` Jinjie Ruan
2026-06-11 13:38 ` [PATCH RFC 1/3] cpu/hotplug: Introduce CONFIG_PARALLEL_SMT_PRIMARY_FIRST Jinjie Ruan
2026-06-11 13:38   ` Jinjie Ruan
2026-06-18 15:17   ` Thomas Gleixner
2026-06-18 15:17     ` Thomas Gleixner
2026-06-19  9:41     ` Peter Zijlstra
2026-06-19  9:41       ` Peter Zijlstra
2026-06-19 19:27       ` Thomas Gleixner [this message]
2026-06-19 19:27         ` Thomas Gleixner
2026-06-11 13:38 ` [PATCH RFC 2/3] arm64: smp: Pass CPU ID to update_cpu_boot_status() Jinjie Ruan
2026-06-11 13:38   ` Jinjie Ruan
2026-06-11 13:38 ` [PATCH RFC 3/3] arm64: Add HOTPLUG_PARALLEL support for secondary CPUs Jinjie Ruan
2026-06-11 13:38   ` Jinjie Ruan
2026-06-12 15:45   ` Michael Kelley
2026-06-12 15:45     ` Michael Kelley
2026-06-15  8:51     ` Jinjie Ruan
2026-06-15  8:51       ` Jinjie Ruan
2026-06-18 12:21       ` Will Deacon
2026-06-18 12:21         ` Will Deacon
2026-06-15  9:57     ` Jinjie Ruan
2026-06-15  9:57       ` Jinjie Ruan
2026-06-18 15:53       ` Thomas Gleixner
2026-06-18 15:53         ` Thomas Gleixner
2026-06-18 15:49   ` Thomas Gleixner
2026-06-18 15:49     ` Thomas Gleixner
2026-06-12 15:51 ` [PATCH RFC 0/3] " Michael Kelley
2026-06-12 15:51   ` Michael Kelley

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