tree 700e24bb8f72a7662e7d4ae26d847e908d08de92
parent b340c656af6317e28b466996a72cca019d97b42d
author Chris Metcalf <cmetcalf@ezchip.com> 1427135038 -0400
committer Chris Metcalf <cmetcalf@ezchip.com> 1429293670 -0400

tile: support CONTEXT_TRACKING and thus NOHZ_FULL

Add the TIF_NOHZ flag appropriately.

Add call to user_exit() on entry to do_work_pending() and on entry
to syscalls via do_syscall_trace_enter(), and also the top of
do_syscall_trace_exit() just because it's done in x86.

Add call to user_enter() at the bottom of do_work_pending() once we
have no more work to do before returning to userspace.

Wrap all the trap code in exception_enter() / exception_exit().

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>