From nobody Fri Nov 29 00:01:13 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1717098227; cv=none; d=zohomail.com; s=zohoarc; b=PHo2azjXD5sKl1+eJmp8HkqfufLGbJXjtqaPCnhT8O4GaXbmVQaRQ8WTXZDc3zly2FqpvSlFe50U/0X+On2MtmCdsRBIQkKU/n88K0smTRzA57Ay6k48xkGXew4ht67cD+uTFyzs7IQpGAiQa/E/I+Ak6r2EfczN2dESmF63iCQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1717098227; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Cnc+k2fYpUESVUzqiNhwI1EEtv65T/mceqpj8jrBceI=; b=mVycrFj0eCLxUjSgbnxl+7v+/6RpjwN0MKJjVtIBJvB3S4kIqR0eaAbFM4faJ8NknjSAmvBEbm/LaLM8esi4LXK9HGAATuuAAi1NJX0aLEJiIjTcVssxgb2bNT2ruxmqZg46dJgifwFze+KhZpp+kKXE3SFNi85WEhkw81+Dj+I= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1717098227651474.3614553097915; Thu, 30 May 2024 12:43:47 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sClfy-0005dO-Fy; Thu, 30 May 2024 15:43:02 -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 1sClfw-0005cB-BP for qemu-devel@nongnu.org; Thu, 30 May 2024 15:43:00 -0400 Received: from mail-ej1-x62a.google.com ([2a00:1450:4864:20::62a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sClft-0006HT-0G for qemu-devel@nongnu.org; Thu, 30 May 2024 15:43:00 -0400 Received: by mail-ej1-x62a.google.com with SMTP id a640c23a62f3a-a667e104375so92875566b.1 for ; Thu, 30 May 2024 12:42:54 -0700 (PDT) Received: from draig.lan ([85.9.250.243]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a67ea67b4f8sm7831766b.102.2024.05.30.12.42.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 May 2024 12:42:51 -0700 (PDT) Received: from draig.lan (localhost [IPv6:::1]) by draig.lan (Postfix) with ESMTP id C35165F8E3; Thu, 30 May 2024 20:42:50 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1717098173; x=1717702973; 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=Cnc+k2fYpUESVUzqiNhwI1EEtv65T/mceqpj8jrBceI=; b=TPGsivEkah+YWZfFOWdgKXB/8asyeaKesCUHcB7OcvcQ1Yb6WnI//SMBdvamuK+k0R ryYMti2/NsEMavvSu2N5T4yarHy9b8YwEep3mAsDOlC2RlaNuPktzXjEa1Ib6SNQPESK /ULFBjb6lE3zT/nsiwYBwmGCHxAwB82Q56P9vC/Nceu5OSOapCiRDGKA8KHWdfZz88qh nJshlUTHHWjllyNo+HiX9umJnoOqW2FEMmWGYDnpS2rJKYU6XzfmJMM5EhSxCQiEDm5e hNLrK7A19MKy5fviIUVI04evcuiOt8p84jh60++Syq1HZhtRpOXcf2i4XkcJ6Az++8wg jBLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717098173; x=1717702973; 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=Cnc+k2fYpUESVUzqiNhwI1EEtv65T/mceqpj8jrBceI=; b=MqghTdIEWicNxlJvTOfQyu0J5qJpBmPnN077S1m6fp4PNMAS4fAhyt7evUQd10rTlU 4/Im7P2XBSNCGzYmWXL8FwePmJBdhMneX1xeTfyyCMT55csgUJUVx/j1+7nyUDjMU+Mu j8N9IGTKHMN+zWNsdNmAB1zE89P+99jFPW/ZdBGQz4+09Rvo1Zzc+SDkz9UdMw0f33w0 GBb5udPzdvx+6a0RqHzJXI2I9fwui18sCy4ey9Pw6vzu+ruvIn2XRqDae0qtk7F0NemH d29Qce3vizvqawzxUOxvqr/AOzTYrci5XqL2BsBywF9ctjpAqXKXsUtZonZcs8cV8BX1 WnpQ== X-Gm-Message-State: AOJu0YwJZ3Vvc3j7wcNxUr1yIdPE0x7YB1HdzlolKGPuuQbS2FHtuxBM 9pzFzKHB3pX1NkB11d3szNvCporOHaBMIM4l+X+tGlINF0PGabuonbZlB4kcuWw= X-Google-Smtp-Source: AGHT+IFVOq8MKMEfrXxp4J5Y6CJd2GA9ZM++5hdN2jPC99fsqqvcLrmD9aX73RbTWxQdJn18BZeDlg== X-Received: by 2002:a17:906:d1c9:b0:a67:aa2b:1032 with SMTP id a640c23a62f3a-a67aa2b10f1mr32855366b.28.1717098173261; Thu, 30 May 2024 12:42:53 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Marcel Apfelbaum , Cameron Esfahani , Alexandre Iooss , Yanan Wang , Paolo Bonzini , Eduardo Habkost , Sunil Muthuswamy , Richard Henderson , Pierrick Bouvier , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Mahmoud Mandour , Reinoud Zandijk , =?UTF-8?q?Alex=20Benn=C3=A9e?= , kvm@vger.kernel.org, Roman Bolshakov Subject: [PATCH 2/5] cpu: move Qemu[Thread|Cond] setup into common code Date: Thu, 30 May 2024 20:42:47 +0100 Message-Id: <20240530194250.1801701-3-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240530194250.1801701-1-alex.bennee@linaro.org> References: <20240530194250.1801701-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::62a; envelope-from=alex.bennee@linaro.org; helo=mail-ej1-x62a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1717098229767100004 Aside from the round robin threads this is all common code. By moving the halt_cond setup we also no longer need hacks to work around the race between QOM object creation and thread creation. It is a little ugly to free stuff up for the round robin thread but better it deal with its own specialises than making the other accelerators jump through hoops. Signed-off-by: Alex Benn=C3=A9e Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Pierrick Bouvier --- include/hw/core/cpu.h | 4 ++++ accel/dummy-cpus.c | 3 --- accel/hvf/hvf-accel-ops.c | 4 ---- accel/kvm/kvm-accel-ops.c | 3 --- accel/tcg/tcg-accel-ops-mttcg.c | 4 ---- accel/tcg/tcg-accel-ops-rr.c | 14 +++++++------- hw/core/cpu-common.c | 5 +++++ target/i386/nvmm/nvmm-accel-ops.c | 3 --- target/i386/whpx/whpx-accel-ops.c | 3 --- 9 files changed, 16 insertions(+), 27 deletions(-) diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index 35d345371b..a405119eda 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -404,10 +404,14 @@ struct qemu_work_item; * @tcg_cflags: Pre-computed cflags for this cpu. * @nr_cores: Number of cores within this CPU package. * @nr_threads: Number of threads within this CPU core. + * @thread: Host thread details, only live once @created is #true + * @sem: WIN32 only semaphore used only for qtest + * @thread_id: native thread id of vCPU, only live once @created is #true * @running: #true if CPU is currently running (lockless). * @has_waiter: #true if a CPU is currently waiting for the cpu_exec_end; * valid under cpu_list_lock. * @created: Indicates whether the CPU thread has been successfully create= d. + * @halt_cond: condition variable sleeping threads can wait on. * @interrupt_request: Indicates a pending interrupt request. * @halted: Nonzero if the CPU is in suspended state. * @stop: Indicates a pending stop request. diff --git a/accel/dummy-cpus.c b/accel/dummy-cpus.c index 20519f1ea4..f32d8c8dc3 100644 --- a/accel/dummy-cpus.c +++ b/accel/dummy-cpus.c @@ -68,9 +68,6 @@ void dummy_start_vcpu_thread(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; =20 - cpu->thread =3D g_malloc0(sizeof(QemuThread)); - cpu->halt_cond =3D g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY", cpu->cpu_index); qemu_thread_create(cpu->thread, thread_name, dummy_cpu_thread_fn, cpu, diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index 40d4187d9d..6f1e27ef46 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -463,10 +463,6 @@ static void hvf_start_vcpu_thread(CPUState *cpu) */ assert(hvf_enabled()); =20 - cpu->thread =3D g_malloc0(sizeof(QemuThread)); - cpu->halt_cond =3D g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); - snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HVF", cpu->cpu_index); qemu_thread_create(cpu->thread, thread_name, hvf_cpu_thread_fn, diff --git a/accel/kvm/kvm-accel-ops.c b/accel/kvm/kvm-accel-ops.c index 94c828ac8d..c239dfc87a 100644 --- a/accel/kvm/kvm-accel-ops.c +++ b/accel/kvm/kvm-accel-ops.c @@ -66,9 +66,6 @@ static void kvm_start_vcpu_thread(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; =20 - cpu->thread =3D g_malloc0(sizeof(QemuThread)); - cpu->halt_cond =3D g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM", cpu->cpu_index); qemu_thread_create(cpu->thread, thread_name, kvm_vcpu_thread_fn, diff --git a/accel/tcg/tcg-accel-ops-mttcg.c b/accel/tcg/tcg-accel-ops-mttc= g.c index c552b45b8e..49814ec4af 100644 --- a/accel/tcg/tcg-accel-ops-mttcg.c +++ b/accel/tcg/tcg-accel-ops-mttcg.c @@ -137,10 +137,6 @@ void mttcg_start_vcpu_thread(CPUState *cpu) g_assert(tcg_enabled()); tcg_cpu_init_cflags(cpu, current_machine->smp.max_cpus > 1); =20 - cpu->thread =3D g_new0(QemuThread, 1); - cpu->halt_cond =3D g_malloc0(sizeof(QemuCond)); - qemu_cond_init(cpu->halt_cond); - /* create a thread per vCPU with TCG (MTTCG) */ snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG", cpu->cpu_index); diff --git a/accel/tcg/tcg-accel-ops-rr.c b/accel/tcg/tcg-accel-ops-rr.c index 894e73e52c..84c36c1450 100644 --- a/accel/tcg/tcg-accel-ops-rr.c +++ b/accel/tcg/tcg-accel-ops-rr.c @@ -317,22 +317,22 @@ void rr_start_vcpu_thread(CPUState *cpu) tcg_cpu_init_cflags(cpu, false); =20 if (!single_tcg_cpu_thread) { - cpu->thread =3D g_new0(QemuThread, 1); - cpu->halt_cond =3D g_new0(QemuCond, 1); - qemu_cond_init(cpu->halt_cond); + single_tcg_halt_cond =3D cpu->halt_cond; + single_tcg_cpu_thread =3D cpu->thread; =20 /* share a single thread for all cpus with TCG */ snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "ALL CPUs/TCG"); qemu_thread_create(cpu->thread, thread_name, rr_cpu_thread_fn, cpu, QEMU_THREAD_JOINABLE); - - single_tcg_halt_cond =3D cpu->halt_cond; - single_tcg_cpu_thread =3D cpu->thread; } else { - /* we share the thread */ + /* we share the thread, dump spare data */ + g_free(cpu->thread); + qemu_cond_destroy(cpu->halt_cond); cpu->thread =3D single_tcg_cpu_thread; cpu->halt_cond =3D single_tcg_halt_cond; + + /* copy the stuff done at start of rr_cpu_thread_fn */ cpu->thread_id =3D first_cpu->thread_id; cpu->neg.can_do_io =3D 1; cpu->created =3D true; diff --git a/hw/core/cpu-common.c b/hw/core/cpu-common.c index 0f0a247f56..6cfc01593a 100644 --- a/hw/core/cpu-common.c +++ b/hw/core/cpu-common.c @@ -261,6 +261,11 @@ static void cpu_common_initfn(Object *obj) cpu->nr_threads =3D 1; cpu->cflags_next_tb =3D -1; =20 + /* allocate storage for thread info, initialise condition variables */ + cpu->thread =3D g_new0(QemuThread, 1); + cpu->halt_cond =3D g_new0(QemuCond, 1); + qemu_cond_init(cpu->halt_cond); + qemu_mutex_init(&cpu->work_mutex); qemu_lockcnt_init(&cpu->in_ioctl_lock); QSIMPLEQ_INIT(&cpu->work_list); diff --git a/target/i386/nvmm/nvmm-accel-ops.c b/target/i386/nvmm/nvmm-acce= l-ops.c index 6b2bfd9b9c..0ba31201e2 100644 --- a/target/i386/nvmm/nvmm-accel-ops.c +++ b/target/i386/nvmm/nvmm-accel-ops.c @@ -64,9 +64,6 @@ static void nvmm_start_vcpu_thread(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; =20 - cpu->thread =3D g_new0(QemuThread, 1); - cpu->halt_cond =3D g_new0(QemuCond, 1); - qemu_cond_init(cpu->halt_cond); snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/NVMM", cpu->cpu_index); qemu_thread_create(cpu->thread, thread_name, qemu_nvmm_cpu_thread_fn, diff --git a/target/i386/whpx/whpx-accel-ops.c b/target/i386/whpx/whpx-acce= l-ops.c index 189ae0f140..1a2b4e1c43 100644 --- a/target/i386/whpx/whpx-accel-ops.c +++ b/target/i386/whpx/whpx-accel-ops.c @@ -64,9 +64,6 @@ static void whpx_start_vcpu_thread(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; =20 - cpu->thread =3D g_new0(QemuThread, 1); - cpu->halt_cond =3D g_new0(QemuCond, 1); - qemu_cond_init(cpu->halt_cond); snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/WHPX", cpu->cpu_index); qemu_thread_create(cpu->thread, thread_name, whpx_cpu_thread_fn, --=20 2.39.2