um: don't bother blocking SIGARLM and SIGUSR1

We used to generate those, but we hadn't done that for a long
time.  No need to bother blocking them for signal handlers.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

3 files changed, 8 insertions, 9 deletions

diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 0ced30cd4ab8..c1a8fa74ebb9 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -236,20 +236,19 @@ out:
 void init_new_thread_signals(void)
 {
         set_handler(SIGSEGV, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+                    SIGIO, SIGWINCH, SIGVTALRM, -1);
         set_handler(SIGTRAP, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+                    SIGIO, SIGWINCH, SIGVTALRM, -1);
         set_handler(SIGFPE, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+                    SIGIO, SIGWINCH, SIGVTALRM, -1);
         set_handler(SIGILL, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+                    SIGIO, SIGWINCH, SIGVTALRM, -1);
         set_handler(SIGBUS, (__sighandler_t) sig_handler, SA_ONSTACK,
-                    SIGUSR1, SIGIO, SIGWINCH, SIGVTALRM, -1);
+                    SIGIO, SIGWINCH, SIGVTALRM, -1);
         signal(SIGHUP, SIG_IGN);
 
         set_handler(SIGIO, (__sighandler_t) sig_handler,
-                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM,
-                    SIGVTALRM, -1);
+                    SA_ONSTACK | SA_RESTART, SIGIO, SIGWINCH, SIGVTALRM, -1);
         signal(SIGWINCH, SIG_IGN);
         signal(SIGTERM, SIG_DFL);
 }
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 2dde9f6d6c0f..75c3e9c9cabb 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -112,7 +112,7 @@ void alarm_handler(int sig, struct sigcontext *sc)
 void timer_init(void)
 {
         set_handler(SIGVTALRM, (__sighandler_t) alarm_handler,
-                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, -1);
+                    SA_ONSTACK | SA_RESTART, SIGIO, SIGWINCH, -1);
 }
 
 void set_sigstack(void *sig_stack, int size)
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index f481d745e231..20b34dcb0906 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -660,7 +660,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf)
         int n;
 
         set_handler(SIGWINCH, (__sighandler_t) sig_handler,
-                    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGVTALRM, -1);
+                    SA_ONSTACK | SA_RESTART, SIGIO, SIGVTALRM, -1);
 
         /*
          * Can't use UML_SETJMP or UML_LONGJMP here because they save