From 439c5e02d59659876e1a2cf019c55e419adab195 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 11 Feb 2015 15:00:12 +0100
Subject: rcu: add g_free_rcu

This simplifies calling g_free from an RCU callback.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/qemu/rcu.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'include/qemu')

diff --git a/include/qemu/rcu.h b/include/qemu/rcu.h
index 068a279..506ab58 100644
--- a/include/qemu/rcu.h
+++ b/include/qemu/rcu.h
@@ -140,6 +140,14 @@ extern void call_rcu1(struct rcu_head *head, RCUCBFunc *func);
       }),                                                                \
       (RCUCBFunc *)(func))
 
+#define g_free_rcu(obj, field) \
+    call_rcu1(({                                                         \
+        char __attribute__((unused))                                     \
+            offset_must_be_zero[-offsetof(typeof(*(obj)), field)];       \
+        &(obj)->field;                                                   \
+      }),                                                                \
+      (RCUCBFunc *)g_free);
+
 #ifdef __cplusplus
 }
 #endif
-- 
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