uml: remove code made redundant by CHOOSE_MODE removal

This patch makes a number of simplifications enabled by the removal of
CHOOSE_MODE.  There were lots of functions that looked like

	int foo(args){
		foo_skas(args);
	}

The bodies of foo_skas are now folded into foo, and their declarations (and
sometimes entire header files) are deleted.

In addition, the union uml_pt_regs, which was a union between the tt and skas
register formats, is now a struct, with the tt-mode arm of the union being
removed.

It turns out that usr2_handler was unused, so it is gone.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index d5fef4ce0112..a955e9bcd04d 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -244,9 +244,6 @@ void init_new_thread_signals(void)
                     SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
         set_handler(SIGBUS, (__sighandler_t) sig_handler, SA_ONSTACK,
                     SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
-        set_handler(SIGUSR2, (__sighandler_t) sig_handler,
-                    SA_ONSTACK, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM,
-                    -1);
         signal(SIGHUP, SIG_IGN);
 
         init_irq_signals(1);