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 X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 777B6C432BE for ; Tue, 17 Aug 2021 17:09:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59C7C60FD9 for ; Tue, 17 Aug 2021 17:09:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231970AbhHQRKL (ORCPT ); Tue, 17 Aug 2021 13:10:11 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:33654 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231637AbhHQRKF (ORCPT ); Tue, 17 Aug 2021 13:10:05 -0400 Date: Tue, 17 Aug 2021 19:09:25 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1629220166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Pua/3tjO7aIRXX12+cyflypDu8x21Lu5L5biSj5T99Q=; b=YD3Vht+o8To9S+hGwb+xNIUKaaST5m0SQIawHWrrnR4/fsCUYmTQBQZ/0ToWgzcOcoCuCN oZWqQi2hODx16ZVD9str+sWpO7fC5hLDCMf5RgSdPI72cFIq1wOMiraZL5AABD4T1HRU/N pP0IAYWgQw9otSDnEaBI5FZOeSgh02Ji241N2gEz3IFQO5fdgNAoojs6wWw3HvtCKD4YTr x3cOfLTYuoNL/uRL4l36/jCvb489Ia9rvzKqeNJzdG1gYdnGAPSFSI4SDbehZtmjl5bRRi RTzBp8PhHhOCuXWaTrAwfkRxP0N+gj+8yOm2rWzjInEq5/7CzgQxkQeto56ApQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1629220166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Pua/3tjO7aIRXX12+cyflypDu8x21Lu5L5biSj5T99Q=; b=HpqKGx3k0um5s2EPmjYfPHpbuLBCi0eO6tySgz/NBu6CU/39l03bVrV6GVZbss3RYLU6Or GPzX1T4JuaejwfBA== From: Sebastian Andrzej Siewior To: Valentin Schneider Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, rcu@vger.kernel.org, linux-rt-users@vger.kernel.org, Catalin Marinas , Will Deacon , Ingo Molnar , Peter Zijlstra , Thomas Gleixner , Steven Rostedt , Daniel Bristot de Oliveira , "Paul E. McKenney" , Frederic Weisbecker , Josh Triplett , Mathieu Desnoyers , Davidlohr Bueso , Lai Jiangshan , Joel Fernandes , Anshuman Khandual , Vincenzo Frascino , Steven Price , Ard Biesheuvel , Boqun Feng , Mike Galbraith Subject: Re: [PATCH v3 2/4] sched: Introduce migratable() Message-ID: <20210817170925.2jwqvgvmqab2glwu@linutronix.de> References: <20210811201354.1976839-1-valentin.schneider@arm.com> <20210811201354.1976839-3-valentin.schneider@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20210811201354.1976839-3-valentin.schneider@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-08-11 21:13:52 [+0100], Valentin Schneider wrote: > diff --git a/include/linux/sched.h b/include/linux/sched.h > index debc960f41e3..8ba7b4a7ee69 100644 > --- a/include/linux/sched.h > +++ b/include/linux/sched.h > @@ -1715,6 +1715,16 @@ static inline bool is_percpu_thread(void) > #endif > } > =20 > +/* Is the current task guaranteed to stay on its current CPU? */ > +static inline bool migratable(void) I'm going to rename this in my tree to `is_migratable' because of |security/keys/trusted-keys/trusted_core.c:45:22: error: =E2=80=98migratabl= e=E2=80=99 redeclared as different kind of symbol | 45 | static unsigned char migratable; | | ^~~~~~~~~~ |In file included from arch/arm64/include/asm/compat.h:16, | from arch/arm64/include/asm/stat.h:13, | from include/linux/stat.h:6, | from include/linux/sysfs.h:22, | from include/linux/kobject.h:20, | from include/linux/of.h:17, | from include/linux/irqdomain.h:35, | from include/linux/acpi.h:13, | from include/linux/tpm.h:21, | from include/keys/trusted-type.h:12, | from security/keys/trusted-keys/trusted_core.c:10: |include/linux/sched.h:1719:20: note: previous definition of =E2=80=98migra= table=E2=80=99 was here | 1719 | static inline bool migratable(void) | | ^~~~~~~~~~ Sebastian 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 X-Spam-Level: X-Spam-Status: No, score=-9.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2FEEC4338F for ; Tue, 17 Aug 2021 17:11:45 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A1CE260C40 for ; Tue, 17 Aug 2021 17:11:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org A1CE260C40 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Qf+HJX731BoKea8SNe2yPQ+Atj4XODyIuVPyKCRf6vI=; b=4jWvvbXfm1wA9G ZAsvDCeOXrLP2+bnIZZ6aazCbDjatlSniXzIzqG58lrf6sKvePJQWm+EBHRnmzw5778uBs1AHGLHI gwPFKoxi+fZ2l/kao5hUtnhHKpVMHuqn68GnLd6vBzk3yueDzcAovnzpJxvyoPS+yGzNoYJYyOEZ1 arHAOPqNJVslsWuegacWgEf6tZDWrFxH8/a0jPvwaf29Foyhp0cqOQULI/LpD6l5LjBnGyzPXPU0P /IejIsOqlmV9VVzJFZFvn7P3Sg2viKu2/GuXDf9RZ23wrj+DeGzwUvVj5aCGjtlS3dma6DztDKQdE vd4oaj1z5h89fdwjMCQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mG2aq-0036rb-NX; Tue, 17 Aug 2021 17:09:40 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mG2ag-0036pE-Kz for linux-arm-kernel@lists.infradead.org; Tue, 17 Aug 2021 17:09:38 +0000 Date: Tue, 17 Aug 2021 19:09:25 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1629220166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Pua/3tjO7aIRXX12+cyflypDu8x21Lu5L5biSj5T99Q=; b=YD3Vht+o8To9S+hGwb+xNIUKaaST5m0SQIawHWrrnR4/fsCUYmTQBQZ/0ToWgzcOcoCuCN oZWqQi2hODx16ZVD9str+sWpO7fC5hLDCMf5RgSdPI72cFIq1wOMiraZL5AABD4T1HRU/N pP0IAYWgQw9otSDnEaBI5FZOeSgh02Ji241N2gEz3IFQO5fdgNAoojs6wWw3HvtCKD4YTr x3cOfLTYuoNL/uRL4l36/jCvb489Ia9rvzKqeNJzdG1gYdnGAPSFSI4SDbehZtmjl5bRRi RTzBp8PhHhOCuXWaTrAwfkRxP0N+gj+8yOm2rWzjInEq5/7CzgQxkQeto56ApQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1629220166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Pua/3tjO7aIRXX12+cyflypDu8x21Lu5L5biSj5T99Q=; b=HpqKGx3k0um5s2EPmjYfPHpbuLBCi0eO6tySgz/NBu6CU/39l03bVrV6GVZbss3RYLU6Or GPzX1T4JuaejwfBA== From: Sebastian Andrzej Siewior To: Valentin Schneider Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, rcu@vger.kernel.org, linux-rt-users@vger.kernel.org, Catalin Marinas , Will Deacon , Ingo Molnar , Peter Zijlstra , Thomas Gleixner , Steven Rostedt , Daniel Bristot de Oliveira , "Paul E. McKenney" , Frederic Weisbecker , Josh Triplett , Mathieu Desnoyers , Davidlohr Bueso , Lai Jiangshan , Joel Fernandes , Anshuman Khandual , Vincenzo Frascino , Steven Price , Ard Biesheuvel , Boqun Feng , Mike Galbraith Subject: Re: [PATCH v3 2/4] sched: Introduce migratable() Message-ID: <20210817170925.2jwqvgvmqab2glwu@linutronix.de> References: <20210811201354.1976839-1-valentin.schneider@arm.com> <20210811201354.1976839-3-valentin.schneider@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210811201354.1976839-3-valentin.schneider@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210817_100930_846537_3BDDEFAD X-CRM114-Status: GOOD ( 10.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMjAyMS0wOC0xMSAyMToxMzo1MiBbKzAxMDBdLCBWYWxlbnRpbiBTY2huZWlkZXIgd3JvdGU6 Cj4gZGlmZiAtLWdpdCBhL2luY2x1ZGUvbGludXgvc2NoZWQuaCBiL2luY2x1ZGUvbGludXgvc2No ZWQuaAo+IGluZGV4IGRlYmM5NjBmNDFlMy4uOGJhN2I0YTdlZTY5IDEwMDY0NAo+IC0tLSBhL2lu Y2x1ZGUvbGludXgvc2NoZWQuaAo+ICsrKyBiL2luY2x1ZGUvbGludXgvc2NoZWQuaAo+IEBAIC0x NzE1LDYgKzE3MTUsMTYgQEAgc3RhdGljIGlubGluZSBib29sIGlzX3BlcmNwdV90aHJlYWQodm9p ZCkKPiAgI2VuZGlmCj4gIH0KPiAgCj4gKy8qIElzIHRoZSBjdXJyZW50IHRhc2sgZ3VhcmFudGVl ZCB0byBzdGF5IG9uIGl0cyBjdXJyZW50IENQVT8gKi8KPiArc3RhdGljIGlubGluZSBib29sIG1p Z3JhdGFibGUodm9pZCkKCkknbSBnb2luZyB0byByZW5hbWUgdGhpcyBpbiBteSB0cmVlIHRvIGBp c19taWdyYXRhYmxlJyBiZWNhdXNlIG9mCnxzZWN1cml0eS9rZXlzL3RydXN0ZWQta2V5cy90cnVz dGVkX2NvcmUuYzo0NToyMjogZXJyb3I6IOKAmG1pZ3JhdGFibGXigJkgcmVkZWNsYXJlZCBhcyBk aWZmZXJlbnQga2luZCBvZiBzeW1ib2wKfCAgIDQ1IHwgc3RhdGljIHVuc2lnbmVkIGNoYXIgbWln cmF0YWJsZTsKfCAgICAgIHwgICAgICAgICAgICAgICAgICAgICAgXn5+fn5+fn5+fgp8SW4gZmls ZSBpbmNsdWRlZCBmcm9tIGFyY2gvYXJtNjQvaW5jbHVkZS9hc20vY29tcGF0Lmg6MTYsCnwgICAg ICAgICAgICAgICAgIGZyb20gYXJjaC9hcm02NC9pbmNsdWRlL2FzbS9zdGF0Lmg6MTMsCnwgICAg ICAgICAgICAgICAgIGZyb20gaW5jbHVkZS9saW51eC9zdGF0Lmg6NiwKfCAgICAgICAgICAgICAg ICAgZnJvbSBpbmNsdWRlL2xpbnV4L3N5c2ZzLmg6MjIsCnwgICAgICAgICAgICAgICAgIGZyb20g aW5jbHVkZS9saW51eC9rb2JqZWN0Lmg6MjAsCnwgICAgICAgICAgICAgICAgIGZyb20gaW5jbHVk ZS9saW51eC9vZi5oOjE3LAp8ICAgICAgICAgICAgICAgICBmcm9tIGluY2x1ZGUvbGludXgvaXJx ZG9tYWluLmg6MzUsCnwgICAgICAgICAgICAgICAgIGZyb20gaW5jbHVkZS9saW51eC9hY3BpLmg6 MTMsCnwgICAgICAgICAgICAgICAgIGZyb20gaW5jbHVkZS9saW51eC90cG0uaDoyMSwKfCAgICAg ICAgICAgICAgICAgZnJvbSBpbmNsdWRlL2tleXMvdHJ1c3RlZC10eXBlLmg6MTIsCnwgICAgICAg ICAgICAgICAgIGZyb20gc2VjdXJpdHkva2V5cy90cnVzdGVkLWtleXMvdHJ1c3RlZF9jb3JlLmM6 MTA6CnxpbmNsdWRlL2xpbnV4L3NjaGVkLmg6MTcxOToyMDogbm90ZTogcHJldmlvdXMgZGVmaW5p dGlvbiBvZiDigJhtaWdyYXRhYmxl4oCZIHdhcyBoZXJlCnwgMTcxOSB8IHN0YXRpYyBpbmxpbmUg Ym9vbCBtaWdyYXRhYmxlKHZvaWQpCnwgICAgICB8ICAgICAgICAgICAgICAgICAgICBefn5+fn5+ fn5+CgpTZWJhc3RpYW4KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlz dHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2xpbnV4LWFybS1rZXJuZWwK