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[v1,3/3] bsd-user: align use of mmap_lock to that of linux-user

Message ID 20170320153441.2181-4-alex.bennee@linaro.org
State Superseded
Headers show
Series MTTCG regression fixes for 2.9-rc1 | expand

Commit Message

Alex Bennée March 20, 2017, 3:34 p.m. UTC 
The introduction of stricter mmap_lock checking in translate-all broke
the BSD user build. The working mmap_lock functions were hidden behind
CONFIG_USE_NPTL which is never defined. This patch brings them inline
with linux-user.

Despite the disapearence of the comment "We aren't threadsafe to start
with..." this doesn't make bsd-user so. It will still need the rest of
the fixes that have been done in linux-user ported over.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
 bsd-user/mmap.c | 13 +------------
 bsd-user/qemu.h |  2 --
 2 files changed, 1 insertion(+), 14 deletions(-)

-- 
2.11.0
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Patch

diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index ee5907330f..9182a8ef39 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -24,8 +24,7 @@ 
 
 //#define DEBUG_MMAP
 
-#if defined(CONFIG_USE_NPTL)
-pthread_mutex_t mmap_mutex;
+static pthread_mutex_t mmap_mutex = PTHREAD_MUTEX_INITIALIZER;
 static int __thread mmap_lock_count;
 
 void mmap_lock(void)
@@ -62,16 +61,6 @@  void mmap_fork_end(int child)
     else
         pthread_mutex_unlock(&mmap_mutex);
 }
-#else
-/* We aren't threadsafe to start with, so no need to worry about locking.  */
-void mmap_lock(void)
-{
-}
-
-void mmap_unlock(void)
-{
-}
-#endif
 
 /* NOTE: all the constants are the HOST ones, but addresses are target. */
 int target_mprotect(abi_ulong start, abi_ulong len, int prot)
diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index 2b2b9184e0..b550cee0cb 100644
--- a/bsd-user/qemu.h
+++ b/bsd-user/qemu.h
@@ -209,10 +209,8 @@  abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
                        abi_ulong new_addr);
 int target_msync(abi_ulong start, abi_ulong len, int flags);
 extern unsigned long last_brk;
-#if defined(CONFIG_USE_NPTL)
 void mmap_fork_start(void);
 void mmap_fork_end(int child);
-#endif
 
 /* main.c */
 extern unsigned long x86_stack_size;