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Re: [Qemu-devel] [patch v5 7/8] memory: introduce tls context to record
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [patch v5 7/8] memory: introduce tls context to record nested dma |
Date: |
Mon, 29 Oct 2012 09:51:30 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1 |
Il 29/10/2012 00:48, Liu Ping Fan ha scritto:
> Signed-off-by: Liu Ping Fan <address@hidden>
> ---
> cpus.c | 3 ++
> exec.c | 58
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> qemu-thread.h | 8 +++++++
> vl.c | 1 +
> 4 files changed, 70 insertions(+), 0 deletions(-)
>
> diff --git a/cpus.c b/cpus.c
> index 191cbf5..e67d80f 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -733,6 +733,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
>
> qemu_mutex_lock(&qemu_global_mutex);
> qemu_thread_get_self(cpu->thread);
> + qemu_thread_init_context();
> env->thread_id = qemu_get_thread_id();
> cpu_single_env = env;
>
> @@ -774,6 +775,7 @@ static void *qemu_dummy_cpu_thread_fn(void *arg)
>
> qemu_mutex_lock_iothread();
> qemu_thread_get_self(cpu->thread);
> + qemu_thread_init_context();
> env->thread_id = qemu_get_thread_id();
>
> sigemptyset(&waitset);
> @@ -813,6 +815,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
>
> qemu_tcg_init_cpu_signals();
> qemu_thread_get_self(cpu->thread);
> + qemu_thread_init_context();
>
> /* signal CPU creation */
> qemu_mutex_lock(&qemu_global_mutex);
> diff --git a/exec.c b/exec.c
> index 46da08c..ea672c6 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -3449,6 +3449,49 @@ static bool
> address_space_section_lookup_ref(AddressSpace *as,
> return safe_ref;
> }
>
> +typedef struct ThreadContext {
> + DispatchType dispatch_type;
> + unsigned int mmio_req_pending;
> +} ThreadContext;
> +
> +static __thread ThreadContext *thread_context;
> +
> +void qemu_thread_init_context(void)
> +{
> + thread_context = g_new(ThreadContext, 1);
> + thread_context->dispatch_type = DISPATCH_INIT;
> + thread_context->mmio_req_pending = 0;
> +}
No need for this:
static __thread ThreadContext thread_context = {
.dispatch_type = DISPATCH_INIT,
.mmio_req_pending = 0
};
Paolo
- [Qemu-devel] [patch v5 0/8] push mmio dispatch out of big lock, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 1/8] atomic: introduce atomic operations, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 2/8] qom: apply atomic on object's refcount, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 5/8] memory: introduce local lock for address space, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 4/8] pci: remove pci device from mem view when unplug, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 7/8] memory: introduce tls context to record nested dma, Liu Ping Fan, 2012/10/28
- Re: [Qemu-devel] [patch v5 7/8] memory: introduce tls context to record nested dma,
Paolo Bonzini <=
- [Qemu-devel] [patch v5 6/8] memory: make mmio dispatch able to be out of biglock, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 8/8] vcpu: push mmio dispatcher out of big lock, Liu Ping Fan, 2012/10/28
- [Qemu-devel] [patch v5 3/8] hotplug: introduce qdev_unplug_complete() to remove device from views, Liu Ping Fan, 2012/10/28