From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BEE9C4332F for ; Mon, 20 Dec 2021 14:04:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233443AbhLTOET (ORCPT ); Mon, 20 Dec 2021 09:04:19 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:50020 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233429AbhLTOEP (ORCPT ); Mon, 20 Dec 2021 09:04:15 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A1B0D60FE8 for ; Mon, 20 Dec 2021 14:04:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4D0DC36AE7; Mon, 20 Dec 2021 14:04:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1640009055; bh=nRdJrLXAXUQqjuTH6KevT/WyCCs075DkQ0KGChjv1JI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=GCdjC4BwLnPvblWyz9yL1CZIIysDGt7qO3/okyaYkvCjzqq1yw5bNv9bi65X5Dors 79C6mVf5N/90Ui8fu+bWwHWFHIJ7R9B/A0O16JrBLN5BS04sJMZ7Vmz1W+MG8IFxM5 e4XtIn/I0evTyuMsfmKJ1jW0onYvz7l0aO4FXnfTPy2Tfr8TkVj8Ed1NrdVQJIO7y+ iUuC4bci8UCDu0UK/L5zDSUmd8eDP4hRPlYl1ycViaRN7sxbrlHe+BPsOhmm5ki3HG fdvZcQGlxepbXf4lV972aklvxTduNqTsEQXuJNwwXDToe6+yC+rEzQXNzWh9ha8Zak i71xv7IvcR8qw== Date: Mon, 20 Dec 2021 15:04:12 +0100 From: Frederic Weisbecker To: LKML Cc: Steven Rostedt , Peter Zijlstra , Ard Biesheuvel , Kees Cook , James Morse , David Laight , Sami Tolvanen , Josh Poimboeuf , Andy Lutomirski , Quentin Perret , Catalin Marinas , Will Deacon , Mark Rutland Subject: Re: [GIT PULL] arm64: Support dynamic preemption v3 Message-ID: <20211220140412.GA918551@lothringen> References: <20211220140142.922323-1-frederic@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211220140142.922323-1-frederic@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (It's not a pull request actually, just an update). Thanks. On Mon, Dec 20, 2021 at 03:01:37PM +0100, Frederic Weisbecker wrote: > Hi, > > I haven't seen much comments on the static key based version from Mark > so I don't know which direction we'll eventually take. I still hope we > can focus on a unified static call based implementation, considering > there are other users waiting on arm64 static calls. > > So here is a rebase against the latest tip:sched/core and arm64 static > call proposal. > > git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git > preempt/arm-v4 > > HEAD: 6fc1c7e3d83c4e06b019b041894d9bb25f37ac6c > > Thanks, > Frederic > --- > > Frederic Weisbecker (3): > sched/preempt: Prepare for supporting !CONFIG_GENERIC_ENTRY dynamic preemption > arm64: Implement IRQ exit preemption static call for dynamic preemption > arm64: Implement HAVE_PREEMPT_DYNAMIC > > Ard Biesheuvel (2): > static_call: Use non-function types to refer to the trampolines > arm64: implement support for static call trampolines > > > arch/Kconfig | 1 - > arch/arm64/Kconfig | 3 ++ > arch/arm64/include/asm/preempt.h | 23 ++++++++++- > arch/arm64/include/asm/static_call.h | 40 +++++++++++++++++++ > arch/arm64/kernel/entry-common.c | 15 +++++-- > arch/arm64/kernel/patching.c | 77 ++++++++++++++++++++++++++++++++++-- > arch/arm64/kernel/vmlinux.lds.S | 1 + > include/linux/entry-common.h | 3 +- > include/linux/static_call.h | 4 +- > include/linux/static_call_types.h | 11 ++++-- > kernel/sched/core.c | 6 ++- > 11 files changed, 168 insertions(+), 16 deletions(-)