From nobody Thu Apr 18 22:24:58 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (208.118.235.17 [208.118.235.17]) by mx.zohomail.com with SMTPS id 1515744945163966.4828153656755; Fri, 12 Jan 2018 00:15:45 -0800 (PST) Received: from localhost ([::1]:52783 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eZuV0-00056U-VB for importer@patchew.org; Fri, 12 Jan 2018 03:15:38 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51944) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eZuUE-0004g8-4F for qemu-devel@nongnu.org; Fri, 12 Jan 2018 03:14:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eZuU9-0006A4-5t for qemu-devel@nongnu.org; Fri, 12 Jan 2018 03:14:50 -0500 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:39721) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eZuU8-000665-QX for qemu-devel@nongnu.org; Fri, 12 Jan 2018 03:14:45 -0500 Received: from unknown (HELO var.youpi.perso.aquilenet.fr) ([193.50.110.245]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/AES256-GCM-SHA384; 12 Jan 2018 09:14:35 +0100 Received: from samy by var.youpi.perso.aquilenet.fr with local (Exim 4.90) (envelope-from ) id 1eZuTz-0005Yh-48; Fri, 12 Jan 2018 09:14:35 +0100 X-IronPort-AV: E=Sophos;i="5.46,348,1511823600"; d="scan'208";a="308745044" From: Samuel Thibault To: qemu-devel@nongnu.org Date: Fri, 12 Jan 2018 09:14:35 +0100 Message-Id: <20180112081435.21299-1-samuel.thibault@ens-lyon.org> X-Mailer: git-send-email 2.15.1 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.134.164.83 Subject: [Qemu-devel] [PATCHv4] linux-user: Add getcpu() support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Samuel Thibault , Riku Voipio , Laurent Vivier Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Samuel Thibault Reviewed-by: Laurent Vivier --- Difference between v1 and v2: handle failure of put_user_u32 with goto efau= lt; Difference between v2 and v3: handle failure of sys_getcpu system call Difference between v3 and v4: use is_error --- linux-user/syscall.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 11c9116c4a..26403d7e5c 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -296,6 +296,8 @@ _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsig= ned int, len, #define __NR_sys_sched_setaffinity __NR_sched_setaffinity _syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, unsigned long *, user_mask_ptr); +#define __NR_sys_getcpu __NR_getcpu +_syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcac= he); _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, void *, arg); _syscall2(int, capget, struct __user_cap_header_struct *, header, @@ -10403,6 +10405,23 @@ abi_long do_syscall(void *cpu_env, int num, abi_lo= ng arg1, ret =3D get_errno(sys_sched_setaffinity(arg1, mask_size, mask)= ); } break; + case TARGET_NR_getcpu: + { + unsigned cpu, node; + ret =3D get_errno(sys_getcpu(arg1 ? &cpu : NULL, + arg2 ? &node : NULL, + NULL)); + if (is_error(ret)) { + goto fail; + } + if (arg1 && put_user_u32(cpu, arg1)) { + goto efault; + } + if (arg2 && put_user_u32(node, arg2)) { + goto efault; + } + } + break; case TARGET_NR_sched_setparam: { struct sched_param *target_schp; --=20 2.15.1