Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755343Ab3JHL3L (ORCPT ); Tue, 8 Oct 2013 07:29:11 -0400 Received: from b.ns.miles-group.at ([95.130.255.144]:1660 "EHLO radon.swed.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755145Ab3JHL3G (ORCPT ); Tue, 8 Oct 2013 07:29:06 -0400 From: Richard Weinberger To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, viro@zeniv.linux.org.uk, vgupta@synopsys.com, catalin.marinas@arm.com, will.deacon@arm.com, hskinnemoen@gmail.com, egtvedt@samfundet.no, vapier@gentoo.org, msalter@redhat.com, a-jacquiot@ti.com, starvik@axis.com, jesper.nilsson@axis.com, dhowells@redhat.com, rkuo@codeaurora.org, tony.luck@intel.com, fenghua.yu@intel.com, takata@linux-m32r.org, geert@linux-m68k.org, james.hogan@imgtec.com, monstr@monstr.eu, yasutake.koichi@jp.panasonic.com, ralf@linux-mips.org, jonas@southpole.se, jejb@parisc-linux.org, deller@gmx.de, benh@kernel.crashing.org, paulus@samba.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, liqin.linux@gmail.com, lennox.wu@gmail.com, lethal@linux-sh.org, cmetcalf@tilera.com, gxt@mprc.pku.edu.cn, linux-xtensa@linux-xtensa.org, akpm@linux-foundation.org, oleg@redhat.com, tj@kernel.org, Richard Weinberger Subject: [PATCH 05/29] c6x: Use get_signal() signal_setup_done() Date: Tue, 8 Oct 2013 13:27:57 +0200 Message-Id: <1381231701-4008-6-git-send-email-richard@nod.at> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1381231701-4008-1-git-send-email-richard@nod.at> References: <1381231701-4008-1-git-send-email-richard@nod.at> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4224 Lines: 138 Use the more generic functions get_signal() signal_setup_done() for signal delivery. Signed-off-by: Richard Weinberger --- arch/c6x/kernel/signal.c | 43 ++++++++++++++++++------------------------- 1 file changed, 18 insertions(+), 25 deletions(-) diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c index 3998b24..8bf9aad 100644 --- a/arch/c6x/kernel/signal.c +++ b/arch/c6x/kernel/signal.c @@ -146,21 +146,21 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, return (void __user *)((sp - framesize) & ~7); } -static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; unsigned long __user *retcode; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto segv_and_exit; + return -EFAULT; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Clear all the bits of the ucontext we don't use. */ err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); @@ -188,7 +188,7 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, #undef COPY if (err) - goto segv_and_exit; + return -EFAULT; flush_icache_range((unsigned long) &frame->retcode, (unsigned long) &frame->retcode + RETCODE_SIZE); @@ -198,10 +198,10 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, /* Change user context to branch to signal handler */ regs->sp = (unsigned long) frame - 8; regs->b3 = (unsigned long) retcode; - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; /* Give the signal number to the handler */ - regs->a4 = signr; + regs->a4 = ksig->sig; /* * For realtime signals we must also set the second and third @@ -212,10 +212,6 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, regs->a6 = (unsigned long)&frame->uc; return 0; - -segv_and_exit: - force_sigsegv(signr, current); - return -EFAULT; } static inline void @@ -245,10 +241,11 @@ do_restart: /* * handle the actual delivery of a signal to userspace */ -static void handle_signal(int sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs, int syscall) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs, + int syscall) { + int ret; + /* Are we from a system call? */ if (syscall) { /* If so, check system call restarting.. */ @@ -259,7 +256,7 @@ static void handle_signal(int sig, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->a4 = -EINTR; break; } @@ -272,9 +269,8 @@ static void handle_signal(int sig, } /* Set up the stack frame */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0) - return; - signal_delivered(sig, info, ka, regs, 0); + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); + signal_setup_done(ret, ksig, 0); } /* @@ -282,18 +278,15 @@ static void handle_signal(int sig, */ static void do_signal(struct pt_regs *regs, int syscall) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; /* we want the common case to go fast, which is why we may in certain * cases get here from kernel mode */ if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - handle_signal(signr, &info, &ka, regs, syscall); + if (get_signal(&ksig)) { + handle_signal(&ksig, regs, syscall); return; } -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/