linux-kernel - Subject: [PATCH 32/91] um: don't bother blocking SIGARLM and SIGUSR1

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Date:	Thu, 18 Aug 2011 20:04:19 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	richard@....at
Cc:	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Subject: [PATCH 32/91] 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@...iv.linux.org.uk>
---
 arch/um/os-Linux/process.c      |   13 ++++++-------
 arch/um/os-Linux/signal.c       |    2 +-
 arch/um/os-Linux/skas/process.c |    2 +-
 3 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 0ced30c..c1a8fa7 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 2dde9f6..75c3e9c 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 896312d..6f9fc0d 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -643,7 +643,7 @@ 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
-- 
1.7.2.5


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