[Qemu-devel] [PATCH 3/4] linux-user: call rcu_(un)register_thread on thread creation/deletion

[Emilio G. Cota]

Note that the right place to call rcu_register_thread() is
do_cpu_loop() and not just in clone_func(), since the
original 'main' thread needs to call rcu_register_thread()
as well.

Signed-off-by: Emilio G. Cota <address@hidden>
---
 linux-user/qemu.h    | 1 +
 linux-user/syscall.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index 8af5e01..08e6609 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -203,6 +203,7 @@ void fork_end(int child);
 
 static inline void do_cpu_loop(CPUArchState *env)
 {
+    rcu_register_thread();
     current_cpu = ENV_GET_CPU(env);
     cpu_loop(env);
 }
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 701c8fa..84909b4 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5614,6 +5614,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             thread_cpu = NULL;
             object_unref(OBJECT(cpu));
             g_free(ts);
+            rcu_unregister_thread();
             pthread_exit(NULL);
         }
 #ifdef TARGET_GPROF
-- 
1.9.1