From d9d0738a898dd26a417d00a6923eef1015d33735 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 5 Sep 2012 18:53:18 -0400 Subject: alpha: don't bother passing switch_stack separately from regs It's needed only in setup_sigcontext() and it's always reg - ; no point passing it all way down through the call chain. This is just the signal.c side of that stuff; next will come the asm glue one... Signed-off-by: Al Viro --- arch/alpha/kernel/signal.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'arch') diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c index 235a8677eca..d0b3507ec6b 100644 --- a/arch/alpha/kernel/signal.c +++ b/arch/alpha/kernel/signal.c @@ -298,8 +298,9 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, - struct switch_stack *sw, unsigned long mask, unsigned long sp) + unsigned long mask, unsigned long sp) { + struct switch_stack *sw = (struct switch_stack *)regs - 1; long i, err = 0; err |= __put_user(on_sig_stack((unsigned long)sc), &sc->sc_onstack); @@ -354,7 +355,7 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, - struct pt_regs *regs, struct switch_stack * sw) + struct pt_regs *regs) { unsigned long oldsp, r26, err = 0; struct sigframe __user *frame; @@ -364,7 +365,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) return -EFAULT; - err |= setup_sigcontext(&frame->sc, regs, sw, set->sig[0], oldsp); + err |= setup_sigcontext(&frame->sc, regs, set->sig[0], oldsp); if (err) return -EFAULT; @@ -401,7 +402,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs, struct switch_stack * sw) + sigset_t *set, struct pt_regs *regs) { unsigned long oldsp, r26, err = 0; struct rt_sigframe __user *frame; @@ -420,7 +421,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp); err |= __put_user(sas_ss_flags(oldsp), &frame->uc.uc_stack.ss_flags); err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); - err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, sw, + err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0], oldsp); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) @@ -464,15 +465,15 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, */ static inline void handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs * regs, struct switch_stack *sw) + struct pt_regs * regs) { sigset_t *oldset = sigmask_to_save(); int ret; if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs, sw); + ret = setup_rt_frame(sig, ka, info, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs, sw); + ret = setup_frame(sig, ka, oldset, regs); if (ret) { force_sigsegv(sig, current); @@ -519,8 +520,7 @@ syscall_restart(unsigned long r0, unsigned long r19, * all (if we get here from anything but a syscall return, it will be 0) */ static void -do_signal(struct pt_regs * regs, struct switch_stack * sw, - unsigned long r0, unsigned long r19) +do_signal(struct pt_regs *regs, unsigned long r0, unsigned long r19) { siginfo_t info; int signr; @@ -537,7 +537,7 @@ do_signal(struct pt_regs * regs, struct switch_stack * sw, /* Whee! Actually deliver the signal. */ if (r0) syscall_restart(r0, r19, regs, &ka); - handle_signal(signr, &ka, &info, regs, sw); + handle_signal(signr, &ka, &info, regs); if (single_stepping) ptrace_set_bpt(current); /* re-set bpt */ return; @@ -568,7 +568,7 @@ do_signal(struct pt_regs * regs, struct switch_stack * sw, } void -do_work_pending(struct pt_regs *regs, struct switch_stack *sw, +do_work_pending(struct pt_regs *regs, struct switch_stack *unused, unsigned long thread_flags, unsigned long r0, unsigned long r19) { @@ -578,7 +578,7 @@ do_work_pending(struct pt_regs *regs, struct switch_stack *sw, } else { local_irq_enable(); if (thread_flags & _TIF_SIGPENDING) { - do_signal(regs, sw, r0, r19); + do_signal(regs, r0, r19); r0 = 0; } else { clear_thread_flag(TIF_NOTIFY_RESUME); -- cgit v1.2.3-70-g09d2