From nobody Fri Dec 19 17:33:00 2025 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 46CF8C83F17 for ; Wed, 30 Aug 2023 18:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244114AbjH3Suc (ORCPT ); Wed, 30 Aug 2023 14:50:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243398AbjH3KyA (ORCPT ); Wed, 30 Aug 2023 06:54:00 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9CDB198 for ; Wed, 30 Aug 2023 03:53:57 -0700 (PDT) Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37UADi4X024752; Wed, 30 Aug 2023 10:53:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=H7sB8FNo2hCMDf3fAD1CSdM7f7rOQLfvI5hlgRjL4xI=; b=UG/YQaGjaXDYFtnE/IKm+kx/YQfnEZMN36mmK2vwGWrp4nDvL62DSHpeRXE+re3n68jm 8XmQ0VLQZTPWuS4USyUTDQ93CsopjkvQ6TJiqe435DokPz9hNPgTHYsfjE5sZ7Jry2Qt 7/0O6mWPSVzeMmYCbWnMo2I0B0EF+H4fIcIMPAMjZqF+R3kwnOojG/Nz/XOwkv9FZUq0 P4otOaUrcOUlsVsVcmHXVqhsdRg4P9obtOIsUj+Zv/QJLOsyI6g1xJ8uQ3mVxeq4EZ5e V6Qv/p2q2A3jkBweoo8Ns5dLaAnKZ73mQw88AnU2qoFI+ycWrdVMbmxw2qdc7qh6C+rY sg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3st360j1jw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Aug 2023 10:53:37 +0000 Received: from m0360083.ppops.net (m0360083.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37UAa4LP029312; Wed, 30 Aug 2023 10:53:36 GMT Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3st360j1j5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Aug 2023 10:53:36 +0000 Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 37U8cHWu009967; Wed, 30 Aug 2023 10:53:34 GMT Received: from smtprelay05.fra02v.mail.ibm.com ([9.218.2.225]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3sqw7kk1xp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 30 Aug 2023 10:53:34 +0000 Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 37UArWGB15663618 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 30 Aug 2023 10:53:32 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BC7BD2004D; Wed, 30 Aug 2023 10:53:32 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 253F220040; Wed, 30 Aug 2023 10:53:28 +0000 (GMT) Received: from saptarishi.in.ibm.com (unknown [9.43.8.96]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 30 Aug 2023 10:53:27 +0000 (GMT) From: Srikar Dronamraju To: Michael Ellerman Cc: linuxppc-dev , Srikar Dronamraju , Juergen Gross , Nicholas Piggin , Christophe Leroy , Josh Poimboeuf , Peter Zijlstra , Paul E McKenney , Valentin Schneider , Nathan Lynch , virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] powerpc/smp: Move shared_processor static key to smp.h Date: Wed, 30 Aug 2023 16:22:42 +0530 Message-ID: <20230830105244.62477-3-srikar@linux.vnet.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230830105244.62477-1-srikar@linux.vnet.ibm.com> References: <20230830105244.62477-1-srikar@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: A2uaoWiWyjL7ha3P5cIJwy2m8KwOCNVs X-Proofpoint-ORIG-GUID: aJibNW_AvqP4RJZbSxOOnRuYtDMNszS9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-29_16,2023-08-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxlogscore=729 clxscore=1015 lowpriorityscore=0 spamscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 adultscore=0 bulkscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308300098 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The ability to detect if the system is running in a shared processor mode is helpful in few more generic cases not just in paravirtualization. For example: At boot time, different scheduler/ topology flags may be set based on the processor mode. Hence move it to a more generic file. Signed-off-by: Srikar Dronamraju --- arch/powerpc/include/asm/paravirt.h | 12 ------------ arch/powerpc/include/asm/smp.h | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/include/asm/paravirt.h b/arch/powerpc/include/asm= /paravirt.h index f5ba1a3c41f8..3bc8cff97f9a 100644 --- a/arch/powerpc/include/asm/paravirt.h +++ b/arch/powerpc/include/asm/paravirt.h @@ -14,13 +14,6 @@ #include #include =20 -DECLARE_STATIC_KEY_FALSE(shared_processor); - -static inline bool is_shared_processor(void) -{ - return static_branch_unlikely(&shared_processor); -} - #ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING extern struct static_key paravirt_steal_enabled; extern struct static_key paravirt_steal_rq_enabled; @@ -71,11 +64,6 @@ static inline void yield_to_any(void) plpar_hcall_norets_notrace(H_CONFER, -1, 0); } #else -static inline bool is_shared_processor(void) -{ - return false; -} - static inline u32 yield_count_of(int cpu) { return 0; diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index aaaa576d0e15..08631b2a4528 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -34,6 +34,20 @@ extern bool coregroup_enabled; extern int cpu_to_chip_id(int cpu); extern int *chip_id_lookup_table; =20 +#ifdef CONFIG_PPC_SPLPAR +DECLARE_STATIC_KEY_FALSE(shared_processor); + +static inline bool is_shared_processor(void) +{ + return static_branch_unlikely(&shared_processor); +} +#else +static inline bool is_shared_processor(void) +{ + return false; +} +#endif + DECLARE_PER_CPU(cpumask_var_t, thread_group_l1_cache_map); DECLARE_PER_CPU(cpumask_var_t, thread_group_l2_cache_map); DECLARE_PER_CPU(cpumask_var_t, thread_group_l3_cache_map); --=20 2.41.0