applied patches from i9305 jb sources, updated mali to r3p0

Change-Id: Iec4bc4e2fb59e2cf5b4d25568a644d4e3719565e

1 files changed, 115 insertions, 0 deletions

diff --git a/drivers/interceptor/linux_mutex.c b/drivers/interceptor/linux_mutex.c
new file mode 100644
index 0000000..7a9fae7
--- /dev/null
+++ b/drivers/interceptor/linux_mutex.c
@@ -0,0 +1,115 @@
+/* Netfilter Driver for IPSec VPN Client
+ *
+ * Copyright(c)   2012 Samsung Electronics
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * linux_mutex.c
+ *
+ * Linux interceptor kernel mutex API implementation.
+ *
+ */
+
+#include "linux_internal.h"
+#include "linux_mutex_internal.h"
+
+extern SshInterceptor ssh_interceptor_context;
+
+Boolean ssh_kernel_mutex_init(SshKernelMutex mutex)
+{
+  spin_lock_init(&mutex->lock);
+
+#ifdef DEBUG_LIGHT
+  mutex->taken = FALSE;
+  mutex->jiffies = 0;
+#endif
+  return TRUE;
+}
+
+/* Allocates a simple mutex.  This should be as fast as possible, but work
+   between different processors in a multiprocessor machine.  This need
+   not work between different independent processes. */
+
+SshKernelMutex
+ssh_kernel_mutex_alloc(void)
+{
+  SshKernelMutex m;
+
+  m = ssh_calloc(1, sizeof(struct SshKernelMutexRec));
+  if (m == NULL)
+    return NULL;
+
+  if (!ssh_kernel_mutex_init(m))
+    {
+      ssh_free(m);
+      m = NULL;
+    }
+  return m;
+}
+
+/* Frees the given mutex.  The mutex must not be locked when it is
+   freed. */
+
+void ssh_kernel_mutex_uninit(SshKernelMutex mutex)
+{
+  SSH_ASSERT(!mutex->taken);
+}
+
+void ssh_kernel_mutex_free(SshKernelMutex mutex)
+{
+  if (mutex)
+    {
+      ssh_kernel_mutex_uninit(mutex);
+      ssh_free(mutex);
+    }
+}
+
+#ifdef KERNEL_MUTEX_USE_FUNCTIONS
+/* Locks the mutex.  Only one thread of execution can have a mutex locked
+   at a time.  This will block until execution can continue.  One should
+   not keep mutexes locked for extended periods of time. */
+void
+ssh_kernel_mutex_lock_i(SshKernelMutex mutex)
+{
+  SSH_LINUX_STATISTICS(ssh_interceptor_context,
+  { ssh_interceptor_context->stats.num_light_locks++; });
+
+  spin_lock(&mutex->lock);
+
+  SSH_ASSERT(!mutex->taken);
+
+#ifdef DEBUG_LIGHT
+  mutex->taken = TRUE;
+  mutex->jiffies = jiffies;
+#endif /* DEBUG_LIGHT */
+}
+
+/* Unlocks the mutex.  If other threads are waiting to lock the mutex,
+   one of them will get the lock and continue execution. */
+
+void
+ssh_kernel_mutex_unlock_i(SshKernelMutex mutex)
+{
+  SSH_ASSERT(mutex->taken);
+#ifdef DEBUG_LIGHT
+  mutex->taken = FALSE;
+#endif /* DEBUG_LIGHT */
+
+  spin_unlock(&mutex->lock);
+}
+#endif /* KERNEL_MUTEX_USE_FUNCTIONS */
+
+#ifdef DEBUG_LIGHT
+/* Check that the mutex is locked.  It is a fatal error if it is not. */
+
+void
+ssh_kernel_mutex_assert_is_locked(SshKernelMutex mutex)
+{
+  SSH_ASSERT(mutex->taken);
+}
+#endif /* DEBUG_LIGHT */