From nobody Sun Dec 28 21:15:48 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 5E942C4167B for ; Tue, 5 Dec 2023 13:30:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1442198AbjLENao (ORCPT ); Tue, 5 Dec 2023 08:30:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1442197AbjLENam (ORCPT ); Tue, 5 Dec 2023 08:30:42 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8123EBA for ; Tue, 5 Dec 2023 05:30:46 -0800 (PST) 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 3B5DCLWx027348; Tue, 5 Dec 2023 13:30:27 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=2kATv5htjxiKX4ukRJoogxRpzBhC6yrnbatuoEfa0/Q=; b=rRzqojxhoX7omjdRjpBOMLm8iFxT2bH1+cVmA9yckRJ8z2BSZevnTTUkcHMTXPwT/jWz 7KrZLNSRyd7VDRqxE1Xn1vqNLMmbuc+GYPBBUZ3E3b6xWwAZd3O3WC1mC4OVimi7Owpv PA/TBmG0Hv9c8UuHEfxWfBXb4MHzl+i7PU/ee3Vof5e0Gl9//tn3oske2dlcxnegSnYW 0nhvdWuH94P25Xp9GHux5GMzG7JS6v1TksxFZmHTm4vQQOAekcWU9EF9zUXNqLh83n2/ dhn6eYrEfKCAiA5Bg2UIrWzWpnanERCA6EX9SinnhxWTQu+B6CGs7WgpM9wExehL/bqH oQ== Received: from ppma22.wdc07v.mail.ibm.com (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3ut4hqgfxr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Dec 2023 13:30:27 +0000 Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 3B5As5hO028492; Tue, 5 Dec 2023 13:30:26 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 3urv8b3knc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Dec 2023 13:30:25 +0000 Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 3B5DUORp41747006 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 5 Dec 2023 13:30:24 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0085F2004D; Tue, 5 Dec 2023 13:30:24 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E569220040; Tue, 5 Dec 2023 13:30:23 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 5 Dec 2023 13:30:23 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 55390) id B7F19E16D3; Tue, 5 Dec 2023 14:30:23 +0100 (CET) From: Sven Schnelle To: Thomas Gleixner , Peter Zijlstra , Andy Lutomirski Cc: linux-kernel@vger.kernel.org, Heiko Carstens Subject: [PATCH 3/3] entry: move syscall_enter_from_user_mode() to header file Date: Tue, 5 Dec 2023 14:30:15 +0100 Message-Id: <20231205133015.752543-4-svens@linux.ibm.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231205133015.752543-1-svens@linux.ibm.com> References: <20231205133015.752543-1-svens@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ApgN7KepFqzo9SvrUKodm65wdQnqZ3HS X-Proofpoint-ORIG-GUID: ApgN7KepFqzo9SvrUKodm65wdQnqZ3HS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-05_08,2023-12-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 suspectscore=0 mlxlogscore=794 priorityscore=1501 clxscore=1015 phishscore=0 bulkscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2312050105 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" To allow inlining of syscall_enter_from_user_mode(), move it to the entry-common.h header file. Signed-off-by: Sven Schnelle --- include/linux/entry-common.h | 27 +++++++++++++++++++++++++-- kernel/entry/common.c | 32 +------------------------------- 2 files changed, 26 insertions(+), 33 deletions(-) diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h index e2c62d111318..ed26d626d587 100644 --- a/include/linux/entry-common.h +++ b/include/linux/entry-common.h @@ -134,6 +134,9 @@ static __always_inline void enter_from_user_mode(struct= pt_regs *regs) */ void syscall_enter_from_user_mode_prepare(struct pt_regs *regs); =20 +long syscall_trace_enter(struct pt_regs *regs, long syscall, + unsigned long work); + /** * syscall_enter_from_user_mode_work - Check and handle work before invoki= ng * a syscall @@ -157,7 +160,15 @@ void syscall_enter_from_user_mode_prepare(struct pt_re= gs *regs); * ptrace_report_syscall_entry(), __secure_computing(), trace_sys_ente= r() * 2) Invocation of audit_syscall_entry() */ -long syscall_enter_from_user_mode_work(struct pt_regs *regs, long syscall); +static __always_inline long syscall_enter_from_user_mode_work(struct pt_re= gs *regs, long syscall) +{ + unsigned long work =3D READ_ONCE(current_thread_info()->syscall_work); + + if (work & SYSCALL_WORK_ENTER) + syscall =3D syscall_trace_enter(regs, syscall, work); + + return syscall; +} =20 /** * syscall_enter_from_user_mode - Establish state and check and handle work @@ -176,7 +187,19 @@ long syscall_enter_from_user_mode_work(struct pt_regs = *regs, long syscall); * Returns: The original or a modified syscall number. See * syscall_enter_from_user_mode_work() for further explanation. */ -long syscall_enter_from_user_mode(struct pt_regs *regs, long syscall); +static __always_inline long syscall_enter_from_user_mode(struct pt_regs *r= egs, long syscall) +{ + long ret; + + enter_from_user_mode(regs); + + instrumentation_begin(); + local_irq_enable(); + ret =3D syscall_enter_from_user_mode_work(regs, syscall); + instrumentation_end(); + + return ret; +} =20 /** * local_irq_enable_exit_to_user - Exit to user variant of local_irq_enabl= e() diff --git a/kernel/entry/common.c b/kernel/entry/common.c index 90b995facd7a..dde4a9c1f9f3 100644 --- a/kernel/entry/common.c +++ b/kernel/entry/common.c @@ -25,7 +25,7 @@ static inline void syscall_enter_audit(struct pt_regs *re= gs, long syscall) } } =20 -static long syscall_trace_enter(struct pt_regs *regs, long syscall, +long syscall_trace_enter(struct pt_regs *regs, long syscall, unsigned long work) { long ret =3D 0; @@ -65,36 +65,6 @@ static long syscall_trace_enter(struct pt_regs *regs, lo= ng syscall, return ret ? : syscall; } =20 -static __always_inline long -__syscall_enter_from_user_work(struct pt_regs *regs, long syscall) -{ - unsigned long work =3D READ_ONCE(current_thread_info()->syscall_work); - - if (work & SYSCALL_WORK_ENTER) - syscall =3D syscall_trace_enter(regs, syscall, work); - - return syscall; -} - -long syscall_enter_from_user_mode_work(struct pt_regs *regs, long syscall) -{ - return __syscall_enter_from_user_work(regs, syscall); -} - -noinstr long syscall_enter_from_user_mode(struct pt_regs *regs, long sysca= ll) -{ - long ret; - - enter_from_user_mode(regs); - - instrumentation_begin(); - local_irq_enable(); - ret =3D __syscall_enter_from_user_work(regs, syscall); - instrumentation_end(); - - return ret; -} - noinstr void syscall_enter_from_user_mode_prepare(struct pt_regs *regs) { enter_from_user_mode(regs); --=20 2.40.1