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From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <frederic@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Ard Biesheuvel <ardb@kernel.org>,
	James Morse <james.morse@arm.com>,
	Quentin Perret <qperret@google.com>,
	Mark Rutland <mark.rutland@arm.com>
Subject: Re: [PATCH 1/4] sched/preempt: Prepare for supporting !CONFIG_GENERIC_ENTRY dynamic preemption
Date: Tue, 21 Sep 2021 09:10:10 +0200	[thread overview]
Message-ID: <YUmFUkk4idIZENAk@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20210920233237.90463-2-frederic@kernel.org>

On Tue, Sep 21, 2021 at 01:32:34AM +0200, Frederic Weisbecker wrote:
> There is no need to force dynamic preemption to depend on the generic
> entry code. The latter is convenient but not mandatory. An architecture
> that doesn't support it just need to provide a static call on its
> kernel IRQ exit preemption path.

True; but at the same time ARM64 is also moving to generic entry. Mark?

  reply	other threads:[~2021-09-21  7:10 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 23:32 [PATCH 0/4] arm64: Support dynamic preemption Frederic Weisbecker
2021-09-20 23:32 ` [PATCH 1/4] sched/preempt: Prepare for supporting !CONFIG_GENERIC_ENTRY " Frederic Weisbecker
2021-09-21  7:10   ` Peter Zijlstra [this message]
2021-09-21 13:50     ` Mark Rutland
2021-09-20 23:32 ` [PATCH 2/4] arm64: implement support for static call trampolines Frederic Weisbecker
2021-09-21  7:09   ` Peter Zijlstra
2021-09-21 14:44     ` Ard Biesheuvel
2021-09-21 15:08       ` Peter Zijlstra
2021-09-21 15:33       ` Mark Rutland
2021-09-21 15:55         ` Ard Biesheuvel
2021-09-21 16:28           ` Mark Rutland
2021-09-25 17:46             ` David Laight
2021-09-27  8:58               ` Mark Rutland
2021-09-21 16:10   ` Ard Biesheuvel
2021-09-20 23:32 ` [PATCH 3/4] arm64: Implement IRQ exit preemption static call for dynamic preemption Frederic Weisbecker
2021-09-20 23:32 ` [PATCH 4/4] arm64: Implement HAVE_PREEMPT_DYNAMIC Frederic Weisbecker
2021-10-25 12:20 [PATCH 0/4] arm64: Support dynamic preemption v2 Frederic Weisbecker
2021-10-25 12:20 ` [PATCH 1/4] sched/preempt: Prepare for supporting !CONFIG_GENERIC_ENTRY dynamic preemption Frederic Weisbecker

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