From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: [PATCH 24/37] Refactor cpu_has_work/any_cpu_has_work in cpus.c Date: Mon, 14 Feb 2011 13:22:53 -0200 Message-ID: <164003228347eb0c27ab6c0e80e2753df55cdbc5.1297696986.git.mtosatti@redhat.com> References: Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Jan Kiszka , Marcelo Tosatti To: Anthony Liguori Return-path: Received: from mx1.redhat.com ([209.132.183.28]:2263 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755709Ab1BNPY7 (ORCPT ); Mon, 14 Feb 2011 10:24:59 -0500 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: From: Jan Kiszka Avoid duplicate use of the function name cpu_has_work, it's confusing, also their scope. Refactor cpu_has_work to cpu_thread_is_idle and do the same with any_cpu_has_work. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- cpus.c | 43 +++++++++++++++++++++++-------------------- 1 files changed, 23 insertions(+), 20 deletions(-) diff --git a/cpus.c b/cpus.c index d54ec7d..e963208 100644 --- a/cpus.c +++ b/cpus.c @@ -137,29 +137,30 @@ static int cpu_can_run(CPUState *env) return 1; } -static int cpu_has_work(CPUState *env) +static bool cpu_thread_is_idle(CPUState *env) { - if (env->stop) - return 1; - if (env->queued_work_first) - return 1; - if (env->stopped || !vm_running) - return 0; - if (!env->halted) - return 1; - if (qemu_cpu_has_work(env)) - return 1; - return 0; + if (env->stop || env->queued_work_first) { + return false; + } + if (env->stopped || !vm_running) { + return true; + } + if (!env->halted || qemu_cpu_has_work(env)) { + return false; + } + return true; } -static int any_cpu_has_work(void) +static bool all_cpu_threads_idle(void) { CPUState *env; - for (env = first_cpu; env != NULL; env = env->next_cpu) - if (cpu_has_work(env)) - return 1; - return 0; + for (env = first_cpu; env != NULL; env = env->next_cpu) { + if (!cpu_thread_is_idle(env)) { + return false; + } + } + return true; } static void cpu_debug_handler(CPUState *env) @@ -743,8 +744,9 @@ static void qemu_tcg_wait_io_event(void) { CPUState *env; - while (!any_cpu_has_work()) + while (all_cpu_threads_idle()) { qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000); + } qemu_mutex_unlock(&qemu_global_mutex); @@ -765,8 +767,9 @@ static void qemu_tcg_wait_io_event(void) static void qemu_kvm_wait_io_event(CPUState *env) { - while (!cpu_has_work(env)) + while (cpu_thread_is_idle(env)) { qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000); + } qemu_kvm_eat_signals(env); qemu_wait_io_event_common(env); @@ -1070,7 +1073,7 @@ bool cpu_exec_all(void) } } exit_request = 0; - return any_cpu_has_work(); + return !all_cpu_threads_idle(); } void set_numa_modes(void) -- 1.7.4 From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=57835 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Pp0IN-0000CB-Uc for qemu-devel@nongnu.org; Mon, 14 Feb 2011 10:25:07 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Pp0IL-000406-0J for qemu-devel@nongnu.org; Mon, 14 Feb 2011 10:24:59 -0500 Received: from mx1.redhat.com ([209.132.183.28]:52843) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Pp0IK-0003z0-Kr for qemu-devel@nongnu.org; Mon, 14 Feb 2011 10:24:56 -0500 From: Marcelo Tosatti Date: Mon, 14 Feb 2011 13:22:53 -0200 Message-Id: <164003228347eb0c27ab6c0e80e2753df55cdbc5.1297696986.git.mtosatti@redhat.com> In-Reply-To: References: Subject: [Qemu-devel] [PATCH 24/37] Refactor cpu_has_work/any_cpu_has_work in cpus.c List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: Jan Kiszka , Marcelo Tosatti , qemu-devel@nongnu.org, kvm@vger.kernel.org From: Jan Kiszka Avoid duplicate use of the function name cpu_has_work, it's confusing, also their scope. Refactor cpu_has_work to cpu_thread_is_idle and do the same with any_cpu_has_work. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- cpus.c | 43 +++++++++++++++++++++++-------------------- 1 files changed, 23 insertions(+), 20 deletions(-) diff --git a/cpus.c b/cpus.c index d54ec7d..e963208 100644 --- a/cpus.c +++ b/cpus.c @@ -137,29 +137,30 @@ static int cpu_can_run(CPUState *env) return 1; } -static int cpu_has_work(CPUState *env) +static bool cpu_thread_is_idle(CPUState *env) { - if (env->stop) - return 1; - if (env->queued_work_first) - return 1; - if (env->stopped || !vm_running) - return 0; - if (!env->halted) - return 1; - if (qemu_cpu_has_work(env)) - return 1; - return 0; + if (env->stop || env->queued_work_first) { + return false; + } + if (env->stopped || !vm_running) { + return true; + } + if (!env->halted || qemu_cpu_has_work(env)) { + return false; + } + return true; } -static int any_cpu_has_work(void) +static bool all_cpu_threads_idle(void) { CPUState *env; - for (env = first_cpu; env != NULL; env = env->next_cpu) - if (cpu_has_work(env)) - return 1; - return 0; + for (env = first_cpu; env != NULL; env = env->next_cpu) { + if (!cpu_thread_is_idle(env)) { + return false; + } + } + return true; } static void cpu_debug_handler(CPUState *env) @@ -743,8 +744,9 @@ static void qemu_tcg_wait_io_event(void) { CPUState *env; - while (!any_cpu_has_work()) + while (all_cpu_threads_idle()) { qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000); + } qemu_mutex_unlock(&qemu_global_mutex); @@ -765,8 +767,9 @@ static void qemu_tcg_wait_io_event(void) static void qemu_kvm_wait_io_event(CPUState *env) { - while (!cpu_has_work(env)) + while (cpu_thread_is_idle(env)) { qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000); + } qemu_kvm_eat_signals(env); qemu_wait_io_event_common(env); @@ -1070,7 +1073,7 @@ bool cpu_exec_all(void) } } exit_request = 0; - return any_cpu_has_work(); + return !all_cpu_threads_idle(); } void set_numa_modes(void) -- 1.7.4