From d5f8d61390de8f2acc0da93f184e421a709cb503 Mon Sep 17 00:00:00 2001 From: KONRAD Frederic Date: Mon, 10 Aug 2015 17:27:06 +0200 Subject: [PATCH] cpus: remove tcg_halt_cond and tcg_cpu_thread globals This hides the tcg_halt_cond and tcg_cpu_thread global variables inside qemu_tcg_init_vcpu. Multi-threaded TCG will need one QemuCond and one QemuThread per virtual cpu, so it's preferrable to use cpu->halt_cond and cpu->thread. Signed-off-by: KONRAD Frederic Message-Id: <1439220437-23957-9-git-send-email-fred.konrad@greensocs.com> Signed-off-by: Paolo Bonzini --- cpus.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/cpus.c b/cpus.c index ea3ffdb900..dddd056454 100644 --- a/cpus.c +++ b/cpus.c @@ -786,9 +786,6 @@ static unsigned iothread_requesting_mutex; static QemuThread io_thread; -static QemuThread *tcg_cpu_thread; -static QemuCond *tcg_halt_cond; - /* cpu creation */ static QemuCond qemu_cpu_cond; /* system init */ @@ -907,15 +904,13 @@ static void qemu_wait_io_event_common(CPUState *cpu) cpu->thread_kicked = false; } -static void qemu_tcg_wait_io_event(void) +static void qemu_tcg_wait_io_event(CPUState *cpu) { - CPUState *cpu; - while (all_cpu_threads_idle()) { /* Start accounting real time to the virtual clock if the CPUs are idle. */ qemu_clock_warp(QEMU_CLOCK_VIRTUAL); - qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); + qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); } while (iothread_requesting_mutex) { @@ -1040,7 +1035,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) /* wait for initial kick-off after machine start */ while (first_cpu->stopped) { - qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); + qemu_cond_wait(first_cpu->halt_cond, &qemu_global_mutex); /* process any pending work */ CPU_FOREACH(cpu) { @@ -1061,7 +1056,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) qemu_clock_notify(QEMU_CLOCK_VIRTUAL); } } - qemu_tcg_wait_io_event(); + qemu_tcg_wait_io_event(QTAILQ_FIRST(&cpus)); } return NULL; @@ -1224,6 +1219,8 @@ void resume_all_vcpus(void) static void qemu_tcg_init_vcpu(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; + static QemuCond *tcg_halt_cond; + static QemuThread *tcg_cpu_thread; tcg_cpu_address_space_init(cpu, cpu->as);