From patchwork Sun Sep 17 22:22:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karim Taha X-Patchwork-Id: 1835810 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=EXX3Mq6U; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RpjDd1W5Qz1ync for ; Mon, 18 Sep 2023 08:25:37 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qi0Bl-0006X1-BQ; Sun, 17 Sep 2023 18:24:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qi0Bi-0006WE-Io for qemu-devel@nongnu.org; Sun, 17 Sep 2023 18:24:22 -0400 Received: from mail-wm1-x336.google.com ([2a00:1450:4864:20::336]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qi0Bh-0002vX-1y for qemu-devel@nongnu.org; Sun, 17 Sep 2023 18:24:22 -0400 Received: by mail-wm1-x336.google.com with SMTP id 5b1f17b1804b1-403012f27e3so44552475e9.3 for ; Sun, 17 Sep 2023 15:24:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1694989459; x=1695594259; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Tcm4lmXBa5x1vWIwc3sC3J6lpJhMK9gQtwcOR8qWqPw=; b=EXX3Mq6UuiaYohZwEfDQJ4IuSAtsD2iE+CIfTmDbUNLHrZ654AdTWsEaWWVKxcY2Cp dQzkIoqYlRrXEl49X/PBrI1dJBTi7izAyC08zzPIpURY62W+zqYFnUi2K/x6GVJLC2s4 3MVO8qDxV0zYkpVDrfEKe+Ita0tcGtI6/dTcmpCvPtvyjDTLinWj2F5my7Bbn1YVs6vm sqR5+JUMZojFwdIzn84K7Vj3mCov7lCA5CX5fpOKpegN5Ku2E+AjWhM73qr9/mIvOZug DwZ2SwXpOI4sYT3xmHYW7s2S3ExtzYYTI2+Fnvd1Vw3o8fula+6U7emraRktxlwv7ql8 J0Cw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694989459; x=1695594259; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Tcm4lmXBa5x1vWIwc3sC3J6lpJhMK9gQtwcOR8qWqPw=; b=dWeKvfVeQgz970Ep1YDYk8EEPMmbnJ+yBgT5Hs318r2TmQViuDapVJgG5wCcyAn3aR 6SXF/ApQlUc2JE8WGNYamfGA/DMOfOcqYOFtpKz7XqcYhwHNCwt0sgFebC+WI4KUV0O9 w/AjZNdufR0dmYsW4rBIYdhl6KuSOYr0u404aOnkSkf9SCkvwk6o2b6LcXfwVtxEtl23 cWbI51M8eTG0g6Ud6JtGEVq9L9UtF0nAreW7CQrB1bU7ZqlJsjJW/EwPiBGNs8Px44uV 8FKhV+FcrhAf2G1oYg5HRIDeioVkwJGA1a0FowK1i/S8LyO8MsoyGw/YL8PVI2std/fc BvDw== X-Gm-Message-State: AOJu0YysVy2R4CdqptcySEMlFkXlMTx36yfPPSWgpya4XgyCwH/KX6NB uLZvM7ZgGpWz5BApXykw0zqkOy7+440= X-Google-Smtp-Source: AGHT+IFf7Z9ghCkuJdtx4HtCPqvcAxLB++Wbn7dRK2KGr9L9L7wxJ1rrG8TeDgu7bbZuzE+QQg9Phg== X-Received: by 2002:a1c:7709:0:b0:3fe:e842:60a0 with SMTP id t9-20020a1c7709000000b003fee84260a0mr6839297wmi.31.1694989459422; Sun, 17 Sep 2023 15:24:19 -0700 (PDT) Received: from karim.my.domain ([197.39.215.8]) by smtp.gmail.com with ESMTPSA id f7-20020adff987000000b0031c8a43712asm10652527wrr.69.2023.09.17.15.24.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 17 Sep 2023 15:24:19 -0700 (PDT) From: Karim Taha To: qemu-devel@nongnu.org Cc: Richard Henderson , imp@bsdimp.com, Kyle Evans , Karim Taha Subject: [PATCH v3 10/28] bsd-user: Get number of cpus. Date: Mon, 18 Sep 2023 01:22:27 +0300 Message-ID: <20230917222246.1921-11-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230917222246.1921-1-kariem.taha2.7@gmail.com> References: <20230917222246.1921-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::336; envelope-from=kariem.taha2.7@gmail.com; helo=mail-wm1-x336.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Kyle Evans Signed-off-by: Kyle Evans Signed-off-by: Karim Taha --- bsd-user/bsd-proc.c | 23 +++++++++++++++++++++++ bsd-user/bsd-proc.h | 2 ++ 2 files changed, 25 insertions(+) diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c index 19f6efe1f7..78f5b172d7 100644 --- a/bsd-user/bsd-proc.c +++ b/bsd-user/bsd-proc.c @@ -119,3 +119,26 @@ int host_to_target_waitstatus(int status) return status; } +int bsd_get_ncpu(void) +{ + int ncpu = -1; + cpuset_t mask; + + CPU_ZERO(&mask); + + if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(mask), + &mask) == 0) { + ncpu = CPU_COUNT(&mask); + } +#ifdef _SC_NPROCESSORS_ONLN + if (ncpu == -1) { + ncpu = sysconf(_SC_NPROCESSORS_ONLN); + } +#endif + if (ncpu == -1) { + gemu_log("XXX Missing bsd_get_ncpu() implementation\n"); + ncpu = 1; + } + return ncpu; +} + diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h index 048773a75d..b6225e520e 100644 --- a/bsd-user/bsd-proc.h +++ b/bsd-user/bsd-proc.h @@ -26,6 +26,8 @@ #include "gdbstub/syscalls.h" #include "qemu/plugin.h" +int bsd_get_ncpu(void); + /* exit(2) */ static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1) {