From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:35022) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1goe35-0007so-Lb for qemu-devel@nongnu.org; Tue, 29 Jan 2019 19:48:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1goe34-0000dP-Iu for qemu-devel@nongnu.org; Tue, 29 Jan 2019 19:48:15 -0500 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:42885) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1goe34-0000cn-7x for qemu-devel@nongnu.org; Tue, 29 Jan 2019 19:48:14 -0500 From: "Emilio G. Cota" Date: Tue, 29 Jan 2019 19:47:00 -0500 Message-Id: <20190130004811.27372-3-cota@braap.org> In-Reply-To: <20190130004811.27372-1-cota@braap.org> References: <20190130004811.27372-1-cota@braap.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v6 02/73] cpu: rename cpu->work_mutex to cpu->lock List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Richard Henderson , Paolo Bonzini This lock will soon protect more fields of the struct. Give it a more appropriate name. Reviewed-by: Richard Henderson Reviewed-by: Alex Bennée Signed-off-by: Emilio G. Cota --- include/qom/cpu.h | 5 +++-- cpus-common.c | 14 +++++++------- cpus.c | 4 ++-- qom/cpu.c | 2 +- 4 files changed, 13 insertions(+), 12 deletions(-) diff --git a/include/qom/cpu.h b/include/qom/cpu.h index fc39f5d529..6224b83ada 100644 --- a/include/qom/cpu.h +++ b/include/qom/cpu.h @@ -321,7 +321,7 @@ struct qemu_work_item; * @mem_io_pc: Host Program Counter at which the memory was accessed. * @mem_io_vaddr: Target virtual address at which the memory was accessed. * @kvm_fd: vCPU file descriptor for KVM. - * @work_mutex: Lock to prevent multiple access to @work_list. + * @lock: Lock to prevent multiple access to per-CPU fields. * @work_list: List of pending asynchronous work. * @trace_dstate_delayed: Delayed changes to trace_dstate (includes all changes * to @trace_dstate). @@ -362,7 +362,8 @@ struct CPUState { int64_t icount_extra; sigjmp_buf jmp_env; - QemuMutex work_mutex; + QemuMutex lock; + /* fields below protected by @lock */ QSIMPLEQ_HEAD(, qemu_work_item) work_list; CPUAddressSpace *cpu_ases; diff --git a/cpus-common.c b/cpus-common.c index a1bbf4139f..d0e619f149 100644 --- a/cpus-common.c +++ b/cpus-common.c @@ -115,10 +115,10 @@ struct qemu_work_item { static void queue_work_on_cpu(CPUState *cpu, struct qemu_work_item *wi) { - qemu_mutex_lock(&cpu->work_mutex); + qemu_mutex_lock(&cpu->lock); QSIMPLEQ_INSERT_TAIL(&cpu->work_list, wi, node); wi->done = false; - qemu_mutex_unlock(&cpu->work_mutex); + qemu_mutex_unlock(&cpu->lock); qemu_cpu_kick(cpu); } @@ -308,15 +308,15 @@ void process_queued_cpu_work(CPUState *cpu) { struct qemu_work_item *wi; - qemu_mutex_lock(&cpu->work_mutex); + qemu_mutex_lock(&cpu->lock); if (QSIMPLEQ_EMPTY(&cpu->work_list)) { - qemu_mutex_unlock(&cpu->work_mutex); + qemu_mutex_unlock(&cpu->lock); return; } while (!QSIMPLEQ_EMPTY(&cpu->work_list)) { wi = QSIMPLEQ_FIRST(&cpu->work_list); QSIMPLEQ_REMOVE_HEAD(&cpu->work_list, node); - qemu_mutex_unlock(&cpu->work_mutex); + qemu_mutex_unlock(&cpu->lock); if (wi->exclusive) { /* Running work items outside the BQL avoids the following deadlock: * 1) start_exclusive() is called with the BQL taken while another @@ -332,13 +332,13 @@ void process_queued_cpu_work(CPUState *cpu) } else { wi->func(cpu, wi->data); } - qemu_mutex_lock(&cpu->work_mutex); + qemu_mutex_lock(&cpu->lock); if (wi->free) { g_free(wi); } else { atomic_mb_set(&wi->done, true); } } - qemu_mutex_unlock(&cpu->work_mutex); + qemu_mutex_unlock(&cpu->lock); qemu_cond_broadcast(&qemu_work_cond); } diff --git a/cpus.c b/cpus.c index edde8268b9..9a3a1d8a6a 100644 --- a/cpus.c +++ b/cpus.c @@ -92,9 +92,9 @@ static inline bool cpu_work_list_empty(CPUState *cpu) { bool ret; - qemu_mutex_lock(&cpu->work_mutex); + qemu_mutex_lock(&cpu->lock); ret = QSIMPLEQ_EMPTY(&cpu->work_list); - qemu_mutex_unlock(&cpu->work_mutex); + qemu_mutex_unlock(&cpu->lock); return ret; } diff --git a/qom/cpu.c b/qom/cpu.c index 06d6b6044d..a2964e53c6 100644 --- a/qom/cpu.c +++ b/qom/cpu.c @@ -371,7 +371,7 @@ static void cpu_common_initfn(Object *obj) cpu->nr_cores = 1; cpu->nr_threads = 1; - qemu_mutex_init(&cpu->work_mutex); + qemu_mutex_init(&cpu->lock); QSIMPLEQ_INIT(&cpu->work_list); QTAILQ_INIT(&cpu->breakpoints); QTAILQ_INIT(&cpu->watchpoints); -- 2.17.1