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The looper member of struct binder_thread is a bitmask of control bits. All of the existing bits are modified by the affected thread except for BINDER_LOOPER_STATE_NEED_RETURN which can be modified in binder_deferred_flush() by another thread. To avoid adding a spinlock around all read-mod-writes to modify a bit, the BINDER_LOOPER_STATE_NEED_RETURN flag is replaced by a separate field in struct binder_thread. Signed-off-by: Todd Kjos <tkjos@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.