tree 77668782763f74aec995899e919231e81a71d56a
parent 530550651fdfd548d25b6bd5ff4607803540508b
author Chris Metcalf <cmetcalf@tilera.com> 1351013454 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1351023838 -0400

arch/tile: eliminate pt_regs trampolines for syscalls

Using the new current_pt_regs() model, we can remove some trampolines
from assembly code and call directly to the C syscall implementations.
rt_sigreturn() and clone() still need some assembly wrapping, but no
longer are passed a pt_regs pointer.  sigaltstack() and the
tilepro-specific cmpxchg_badaddr() syscalls are now just straight C.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>