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signals: mv {dis,}allow_signal() from sched.h/exit.c to signal.[ch]

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Move the declaration/definition of allow_signal/disallow_signal to
signal.h/signal.c.  The new place is more logical and allows to use the
static helpers in signal.c (see the next changes).

While at it, make them return void and remove the valid_signal() check.
Nobody checks the returned value, and in-kernel users must not pass the
wrong signal number.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov
2014-06-06 14:36:53 -07:00
committed by Linus Torvalds
parent afe2b0386a
commit 0341729b4b
4 changed files with 31 additions and 42 deletions
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3
include/linux/sched.h
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@@ -2414,9 +2414,6 @@ extern void flush_itimer_signals(void);
extern void do_group_exit(int);
extern int allow_signal(int);
extern int disallow_signal(int);
extern int do_execve(struct filename *,
const char __user * const __user *,
const char __user * const __user *);