Merge branch 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc

Pull arch signal handling cleanup from Richard Weinberger:
 "This patch series moves all remaining archs to the get_signal(),
  signal_setup_done() and sigsp() functions.

  Currently these archs use open coded variants of the said functions.
  Further, unused parameters get removed from get_signal_to_deliver(),
  tracehook_signal_handler() and signal_delivered().

  At the end of the day we save around 500 lines of code."

* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
  powerpc: Use sigsp()
  openrisc: Use sigsp()
  mn10300: Use sigsp()
  mips: Use sigsp()
  microblaze: Use sigsp()
  metag: Use sigsp()
  m68k: Use sigsp()
  m32r: Use sigsp()
  hexagon: Use sigsp()
  frv: Use sigsp()
  cris: Use sigsp()
  c6x: Use sigsp()
  blackfin: Use sigsp()
  avr32: Use sigsp()
  arm64: Use sigsp()
  arc: Use sigsp()
  sas_ss_flags: Remove nested ternary if
  Rip out get_signal_to_deliver()
  Clean up signal_delivered()
  tracehook_signal_handler: Remove sig, info, ka and regs
  ...

1 files changed, 16 insertions, 20 deletions

diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 1bc5a1755ed4..b171001698ff 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -981,9 +981,8 @@ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
  * Set up a signal frame for a "real-time" signal handler
  * (one which gets siginfo).
  */
-int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
-		siginfo_t *info, sigset_t *oldset,
-		struct pt_regs *regs)
+int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
+		       struct pt_regs *regs)
 {
 	struct rt_sigframe __user *rt_sf;
 	struct mcontext __user *frame;
@@ -995,13 +994,13 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
 
 	/* Set up Signal Frame */
 	/* Put a Real Time Context onto stack */
-	rt_sf = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*rt_sf), 1);
+	rt_sf = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*rt_sf), 1);
 	addr = rt_sf;
 	if (unlikely(rt_sf == NULL))
 		goto badframe;
 
 	/* Put the siginfo & fill in most of the ucontext */
-	if (copy_siginfo_to_user(&rt_sf->info, info)
+	if (copy_siginfo_to_user(&rt_sf->info, &ksig->info)
 	    || __put_user(0, &rt_sf->uc.uc_flags)
 	    || __save_altstack(&rt_sf->uc.uc_stack, regs->gpr[1])
 	    || __put_user(to_user_ptr(&rt_sf->uc.uc_mcontext),
@@ -1051,15 +1050,15 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
 
 	/* Fill registers for signal handler */
 	regs->gpr[1] = newsp;
-	regs->gpr[3] = sig;
+	regs->gpr[3] = ksig->sig;
 	regs->gpr[4] = (unsigned long) &rt_sf->info;
 	regs->gpr[5] = (unsigned long) &rt_sf->uc;
 	regs->gpr[6] = (unsigned long) rt_sf;
-	regs->nip = (unsigned long) ka->sa.sa_handler;
+	regs->nip = (unsigned long) ksig->ka.sa.sa_handler;
 	/* enter the signal handler in native-endian mode */
 	regs->msr &= ~MSR_LE;
 	regs->msr |= (MSR_KERNEL & MSR_LE);
-	return 1;
+	return 0;
 
 badframe:
 	if (show_unhandled_signals)
@@ -1069,8 +1068,7 @@ badframe:
 				   current->comm, current->pid,
 				   addr, regs->nip, regs->link);
 
-	force_sigsegv(sig, current);
-	return 0;
+	return 1;
 }
 
 static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int sig)
@@ -1409,8 +1407,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
 /*
  * OK, we're invoking a handler
  */
-int handle_signal32(unsigned long sig, struct k_sigaction *ka,
-		    siginfo_t *info, sigset_t *oldset, struct pt_regs *regs)
+int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs)
 {
 	struct sigcontext __user *sc;
 	struct sigframe __user *frame;
@@ -1420,7 +1417,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
 	unsigned long tramp;
 
 	/* Set up Signal Frame */
-	frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 1);
+	frame = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*frame), 1);
 	if (unlikely(frame == NULL))
 		goto badframe;
 	sc = (struct sigcontext __user *) &frame->sctx;
@@ -1428,7 +1425,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
 #if _NSIG != 64
 #error "Please adjust handle_signal()"
 #endif
-	if (__put_user(to_user_ptr(ka->sa.sa_handler), &sc->handler)
+	if (__put_user(to_user_ptr(ksig->ka.sa.sa_handler), &sc->handler)
 	    || __put_user(oldset->sig[0], &sc->oldmask)
 #ifdef CONFIG_PPC64
 	    || __put_user((oldset->sig[0] >> 32), &sc->_unused[3])
@@ -1436,7 +1433,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
 	    || __put_user(oldset->sig[1], &sc->_unused[3])
 #endif
 	    || __put_user(to_user_ptr(&frame->mctx), &sc->regs)
-	    || __put_user(sig, &sc->signal))
+	    || __put_user(ksig->sig, &sc->signal))
 		goto badframe;
 
 	if (vdso32_sigtramp && current->mm->context.vdso_base) {
@@ -1471,12 +1468,12 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
 		goto badframe;
 
 	regs->gpr[1] = newsp;
-	regs->gpr[3] = sig;
+	regs->gpr[3] = ksig->sig;
 	regs->gpr[4] = (unsigned long) sc;
-	regs->nip = (unsigned long) ka->sa.sa_handler;
+	regs->nip = (unsigned long) (unsigned long)ksig->ka.sa.sa_handler;
 	/* enter the signal handler in big-endian mode */
 	regs->msr &= ~MSR_LE;
-	return 1;
+	return 0;
 
 badframe:
 	if (show_unhandled_signals)
@@ -1486,8 +1483,7 @@ badframe:
 				   current->comm, current->pid,
 				   frame, regs->nip, regs->link);
 
-	force_sigsegv(sig, current);
-	return 0;
+	return 1;
 }
 
 /*