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[1/3] tcg: Introduce mmap_lock_reset()

Message ID 1467909880-18834-2-git-send-email-sergey.fedorov@linaro.org
State New
Headers show

Commit Message

sergey.fedorov@linaro.org July 7, 2016, 4:44 p.m. UTC 
From: Sergey Fedorov <serge.fdrv@gmail.com>

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
---
 bsd-user/mmap.c         | 7 +++++++
 include/exec/exec-all.h | 2 ++
 linux-user/mmap.c       | 7 +++++++
 3 files changed, 16 insertions(+)
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Patch

diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index 610f91b28584..b2e5909b03c4 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -42,6 +42,13 @@  void mmap_unlock(void)
     }
 }
 
+void mmap_lock_reset(void)
+{
+    if (mmap_lock_count) {
+        pthread_mutex_unlock(&mmap_mutex);
+    }
+}
+
 /* Grab lock to make sure things are in a consistent state after fork().  */
 void mmap_fork_start(void)
 {
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index c1f59fa59d2c..0375acb5ab40 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -369,6 +369,7 @@  void tlb_fill(CPUState *cpu, target_ulong addr, int is_write, int mmu_idx,
 #if defined(CONFIG_USER_ONLY)
 void mmap_lock(void);
 void mmap_unlock(void);
+void mmap_lock_reset(void);
 
 static inline tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr)
 {
@@ -377,6 +378,7 @@  static inline tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong
 #else
 static inline void mmap_lock(void) {}
 static inline void mmap_unlock(void) {}
+static inline void mmap_lock_reset(void) {}
 
 /* cputlb.c */
 tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr);
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index c4371d943a85..4cd998f96766 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -43,6 +43,13 @@  void mmap_unlock(void)
     }
 }
 
+void mmap_lock_reset(void)
+{
+    if (mmap_lock_count) {
+        pthread_mutex_unlock(&mmap_mutex);
+    }
+}
+
 /* Grab lock to make sure things are in a consistent state after fork().  */
 void mmap_fork_start(void)
 {