From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:44018) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SyzjW-0001ej-2N for qemu-devel@nongnu.org; Wed, 08 Aug 2012 02:27:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SyzjV-0002Rn-0X for qemu-devel@nongnu.org; Wed, 08 Aug 2012 02:27:06 -0400 Received: from mail-ob0-f173.google.com ([209.85.214.173]:62109) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SyzjU-0001sm-S7 for qemu-devel@nongnu.org; Wed, 08 Aug 2012 02:27:04 -0400 Received: by mail-ob0-f173.google.com with SMTP id ta14so635077obb.4 for ; Tue, 07 Aug 2012 23:27:04 -0700 (PDT) From: Liu Ping Fan Date: Wed, 8 Aug 2012 14:25:52 +0800 Message-Id: <1344407156-25562-12-git-send-email-qemulist@gmail.com> In-Reply-To: <1344407156-25562-1-git-send-email-qemulist@gmail.com> References: <1344407156-25562-1-git-send-email-qemulist@gmail.com> Subject: [Qemu-devel] [PATCH 11/15] lock: introduce global lock for device tree List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kvm@vger.kernel.org, Stefan Hajnoczi , Marcelo Tosatti , qemulist@gmail.com, Blue Swirl , Avi Kivity , Anthony Liguori , Jan Kiszka , Paolo Bonzini , =?UTF-8?q?Andreas=20F=C3=A4rber?= From: Liu Ping Fan Signed-off-by: Liu Ping Fan --- cpus.c | 12 ++++++++++++ main-loop.h | 3 +++ 2 files changed, 15 insertions(+), 0 deletions(-) diff --git a/cpus.c b/cpus.c index b182b3d..a734b36 100644 --- a/cpus.c +++ b/cpus.c @@ -611,6 +611,7 @@ static void qemu_tcg_init_cpu_signals(void) } #endif /* _WIN32 */ +QemuMutex qemu_device_tree_mutex; QemuMutex qemu_global_mutex; static QemuCond qemu_io_proceeded_cond; static bool iothread_requesting_mutex; @@ -634,6 +635,7 @@ void qemu_init_cpu_loop(void) qemu_cond_init(&qemu_work_cond); qemu_cond_init(&qemu_io_proceeded_cond); qemu_mutex_init(&qemu_global_mutex); + qemu_mutex_init(&qemu_device_tree_mutex); qemu_thread_get_self(&io_thread); } @@ -911,6 +913,16 @@ void qemu_mutex_unlock_iothread(void) qemu_mutex_unlock(&qemu_global_mutex); } +void qemu_lock_devtree(void) +{ + qemu_mutex_lock(&qemu_device_tree_mutex); +} + +void qemu_unlock_devtree(void) +{ + qemu_mutex_unlock(&qemu_device_tree_mutex); +} + static int all_vcpus_paused(void) { CPUArchState *penv = first_cpu; diff --git a/main-loop.h b/main-loop.h index dce1cd9..17e959a 100644 --- a/main-loop.h +++ b/main-loop.h @@ -353,6 +353,9 @@ void qemu_mutex_lock_iothread(void); */ void qemu_mutex_unlock_iothread(void); +void qemu_lock_devtree(void); +void qemu_unlock_devtree(void); + /* internal interfaces */ void qemu_fd_register(int fd); -- 1.7.4.4