When a binder service's main thread joins the thread pool
it retains its name (whatever the exec name was), which is
very confusing in systrace.
we now rename that thread just like its friends in the
thread pool.
Change-Id: Ibb3b6ff07304b247cfc6fb1694e72350c579513e
prctl(PR_SET_NAME) limits to 15 characters. Before we had names like
"Binder Thread #" and the counter was cut off :-( Also remove redundant
"thread" at end of name; it's always a thread.
Change-Id: I1f99c2730ba0787ed9b59c15914356cddf698e2f
in the kernel requires a guard page, so 1M allocations fragment memory very
badly. Subtracting a couple of pages so that they fit in a power of
two allows the kernel to make more efficient use of its virtual address space.
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
