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authorAndreas Färber <afaerber@suse.de>2013-06-24 23:50:24 +0200
committerAndreas Färber <afaerber@suse.de>2013-09-03 12:25:55 +0200
commitbdc44640cb33c90809376a262df871a1144d339a (patch)
treeef3b8d1d6a389d85baeb0cee895471b634a2fc3b /exec.c
parent27013bf20d5d93ac75d398aa3608604e8ad91b5a (diff)
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cpu: Use QTAILQ for CPU list
Introduce CPU_FOREACH(), CPU_FOREACH_SAFE() and CPU_NEXT() shorthand macros. Signed-off-by: Andreas Färber <afaerber@suse.de>
Diffstat (limited to 'exec.c')
-rw-r--r--exec.c26
1 files changed, 10 insertions, 16 deletions
diff --git a/exec.c b/exec.c
index 3ca9381..ca2a504 100644
--- a/exec.c
+++ b/exec.c
@@ -69,7 +69,7 @@ static MemoryRegion io_mem_unassigned;
#endif
-CPUState *first_cpu;
+struct CPUTailQ cpus = QTAILQ_HEAD_INITIALIZER(cpus);
/* current CPU in the current thread. It is only valid inside
cpu_exec() */
DEFINE_TLS(CPUState *, current_cpu);
@@ -351,26 +351,23 @@ const VMStateDescription vmstate_cpu_common = {
CPUState *qemu_get_cpu(int index)
{
- CPUState *cpu = first_cpu;
+ CPUState *cpu;
- while (cpu) {
+ CPU_FOREACH(cpu) {
if (cpu->cpu_index == index) {
- break;
+ return cpu;
}
- cpu = cpu->next_cpu;
}
- return cpu;
+ return NULL;
}
void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data)
{
CPUState *cpu;
- cpu = first_cpu;
- while (cpu) {
+ CPU_FOREACH(cpu) {
func(cpu, data);
- cpu = cpu->next_cpu;
}
}
@@ -378,17 +375,14 @@ void cpu_exec_init(CPUArchState *env)
{
CPUState *cpu = ENV_GET_CPU(env);
CPUClass *cc = CPU_GET_CLASS(cpu);
- CPUState **pcpu;
+ CPUState *some_cpu;
int cpu_index;
#if defined(CONFIG_USER_ONLY)
cpu_list_lock();
#endif
- cpu->next_cpu = NULL;
- pcpu = &first_cpu;
cpu_index = 0;
- while (*pcpu != NULL) {
- pcpu = &(*pcpu)->next_cpu;
+ CPU_FOREACH(some_cpu) {
cpu_index++;
}
cpu->cpu_index = cpu_index;
@@ -398,7 +392,7 @@ void cpu_exec_init(CPUArchState *env)
#ifndef CONFIG_USER_ONLY
cpu->thread_id = qemu_get_thread_id();
#endif
- *pcpu = cpu;
+ QTAILQ_INSERT_TAIL(&cpus, cpu, node);
#if defined(CONFIG_USER_ONLY)
cpu_list_unlock();
#endif
@@ -1762,7 +1756,7 @@ static void tcg_commit(MemoryListener *listener)
/* since each CPU stores ram addresses in its TLB cache, we must
reset the modified entries */
/* XXX: slow ! */
- for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
+ CPU_FOREACH(cpu) {
CPUArchState *env = cpu->env_ptr;
tlb_flush(env, 1);