From patchwork Tue Oct 3 23:31:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Warner Losh X-Patchwork-Id: 1842932 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=bsdimp-com.20230601.gappssmtp.com header.i=@bsdimp-com.20230601.gappssmtp.com header.a=rsa-sha256 header.s=20230601 header.b=nHbrOhc+; 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 4S0Z3t3fYkz1yng for ; Wed, 4 Oct 2023 10:37:14 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qnovC-00041Z-Sf; Tue, 03 Oct 2023 19:35:22 -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 1qnov9-0003xn-84 for qemu-devel@nongnu.org; Tue, 03 Oct 2023 19:35:19 -0400 Received: from mail-io1-xd35.google.com ([2607:f8b0:4864:20::d35]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qnov7-0006ph-NW for qemu-devel@nongnu.org; Tue, 03 Oct 2023 19:35:18 -0400 Received: by mail-io1-xd35.google.com with SMTP id ca18e2360f4ac-79f95cd15dfso58506839f.0 for ; Tue, 03 Oct 2023 16:35:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20230601.gappssmtp.com; s=20230601; t=1696376116; x=1696980916; 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=7FAk+UvZhi8lAunIPUyYc1Eov2CJXu6KRzN3IKE5mSs=; b=nHbrOhc+JIHn8E/18Qd+LQCidWORKbCg2slFxOA8LShoZR+SjeLfj+XVe0HLYnzGos yPFNgLgoaTsSVb6ACqDkrDdcSUx0H0QXCBpM0OryI4aNlwO/cn1oBdpkhyrsy8MTokN8 x/lf04sE5MMqfKA919dsKD4Z99yUY5a4Ga8duBHqSL+LG1U15zVcMcAQcVE3OP9u8hGV co0Oqp1Gv3jbiyCzycgQjRsYkGrHR1HZA6p3gTe/iu61lb9EzZEnQVhFuYOR3bNtWOdX OsLJQZP5ZPyB3fRO8HJgz6hcRLabxnr99J0aWRNRL/hSb1gDOAuoM8Rcnus9ZGCh8Drw wiEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696376116; x=1696980916; 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=7FAk+UvZhi8lAunIPUyYc1Eov2CJXu6KRzN3IKE5mSs=; b=Wyy7VTWyWk/P3mH8yXEgIgyTcuJwAtBBGdiZibJZmywSzPSkZSGo2gckAl/Fkt07xP vHQsGfOMqPuTWcJ7u5Syo8LD42TleCHEDEwk7hHZ7WvYahNUVHjiWWEzKoZfQKz3RSRT 2oPwGD2dxyuD20vivdSWzwH6bj3rLiQRB1xmI2pE7nbBIZzHNODTzZABqLh63WkzyY9g LhF7DH1ivglKzaYCtx+oo4MawRIML343WHXevZpsKTZIupLHqZe/WQxTwrcAFBN+ujxq bQAJK03p65YvP9OO+YsLvWlvVEJxl5Fu4rVBjXR7Exa2bjMdaZp+W+2Ycuvupeb1qpcu yYrw== X-Gm-Message-State: AOJu0Yx4K4fG0rotSaj+e09rcE8QbcVUidvH5KeA1j3x4pPmDHqkCwbo esXjdQvceEnSnuqiduQpcGOuy5MUZUaoyMie54wFFw== X-Google-Smtp-Source: AGHT+IGRgjFxlsD69e0vWVBL+UzIOcI8W4zqbyGYNbaD2jGXCR/6TyzlRaJFbu05Vb/KM5fRyXW7Ng== X-Received: by 2002:a6b:7b05:0:b0:791:280:839e with SMTP id l5-20020a6b7b05000000b007910280839emr875375iop.16.1696376116160; Tue, 03 Oct 2023 16:35:16 -0700 (PDT) Received: from dune.bsdimp.com (50-253-99-174-static.hfc.comcastbusiness.net. [50.253.99.174]) by smtp.gmail.com with ESMTPSA id w25-20020a6b4a19000000b0079fa1a7cd36sm593596iob.30.2023.10.03.16.35.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Oct 2023 16:35:15 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Thomas Huth , Laurent Vivier , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , =?utf-8?q?Alex?= =?utf-8?q?_Benn=C3=A9e?= , Wainer dos Santos Moschetta , Beraldo Leal , Warner Losh , Kyle Evans , Kyle Evans , Karim Taha Subject: [PULL 10/51] bsd-user: Get number of cpus. Date: Tue, 3 Oct 2023 17:31:34 -0600 Message-ID: <20231003233215.95557-11-imp@bsdimp.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231003233215.95557-1-imp@bsdimp.com> References: <20231003233215.95557-1-imp@bsdimp.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::d35; envelope-from=imp@bsdimp.com; helo=mail-io1-xd35.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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 Reviewed-by: Warner Losh Message-Id: <20230925182425.3163-11-kariem.taha2.7@gmail.com> --- bsd-user/bsd-proc.c | 24 ++++++++++++++++++++++++ bsd-user/bsd-proc.h | 2 ++ 2 files changed, 26 insertions(+) diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c index 19f6efe1f78..ca3c1bf94f4 100644 --- a/bsd-user/bsd-proc.c +++ b/bsd-user/bsd-proc.c @@ -119,3 +119,27 @@ 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); + } + + if (ncpu == -1) { + ncpu = sysconf(_SC_NPROCESSORS_ONLN); + } + + 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 048773a75dd..b6225e520ea 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) {