Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758723AbYC2ANU (ORCPT ); Fri, 28 Mar 2008 20:13:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754641AbYC2ANK (ORCPT ); Fri, 28 Mar 2008 20:13:10 -0400 Received: from mx1.redhat.com ([66.187.233.31]:48339 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753676AbYC2ANI (ORCPT ); Fri, 28 Mar 2008 20:13:08 -0400 From: Roland McGrath To: Andrew Morton , Linus Torvalds Cc: Martin Schwidefsky , linux-s390@vger.kernel.org Cc: tony.luck@intel.com, linux-ia64@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-kernel@vger.kernel.org X-Fcc: ~/Mail/linus Subject: [PATCH 1/4] set_restore_sigmask X-Antipastobozoticataclysm: Bariumenemanilow Message-Id: <20080329001230.D013726FA1D@magilla.localdomain> Date: Fri, 28 Mar 2008 17:12:30 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4785 Lines: 146 This adds the set_restore_sigmask() inline in and replaces every set_thread_flag(TIF_RESTORE_SIGMASK) with a call to it. No change, but abstracts the flag protocol details from all the calls. Signed-off-by: Roland McGrath --- fs/compat.c | 6 +++--- fs/eventpoll.c | 3 +-- fs/select.c | 4 ++-- include/linux/thread_info.h | 15 ++++++++++++++- kernel/compat.c | 3 +-- kernel/signal.c | 2 +- 6 files changed, 22 insertions(+), 11 deletions(-) diff --git a/fs/compat.c b/fs/compat.c index 2ce4456..9964d54 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -1720,7 +1720,7 @@ sticky: if (sigmask) { memcpy(¤t->saved_sigmask, &sigsaved, sizeof(sigsaved)); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); } } else if (sigmask) sigprocmask(SIG_SETMASK, &sigsaved, NULL); @@ -1791,7 +1791,7 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, if (sigmask) { memcpy(¤t->saved_sigmask, &sigsaved, sizeof(sigsaved)); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); } ret = -ERESTARTNOHAND; } else if (sigmask) @@ -2117,7 +2117,7 @@ asmlinkage long compat_sys_epoll_pwait(int epfd, if (err == -EINTR) { memcpy(¤t->saved_sigmask, &sigsaved, sizeof(sigsaved)); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); } else sigprocmask(SIG_SETMASK, &sigsaved, NULL); } diff --git a/fs/eventpoll.c b/fs/eventpoll.c index a415f42..503ffa4 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1300,7 +1300,7 @@ asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events, if (error == -EINTR) { memcpy(¤t->saved_sigmask, &sigsaved, sizeof(sigsaved)); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); } else sigprocmask(SIG_SETMASK, &sigsaved, NULL); } @@ -1330,4 +1330,3 @@ static int __init eventpoll_init(void) return 0; } fs_initcall(eventpoll_init); - diff --git a/fs/select.c b/fs/select.c index 5633fe9..bbd351c 100644 --- a/fs/select.c +++ b/fs/select.c @@ -498,7 +498,7 @@ sticky: if (sigmask) { memcpy(¤t->saved_sigmask, &sigsaved, sizeof(sigsaved)); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); } } else if (sigmask) sigprocmask(SIG_SETMASK, &sigsaved, NULL); @@ -805,7 +805,7 @@ asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds, if (sigmask) { memcpy(¤t->saved_sigmask, &sigsaved, sizeof(sigsaved)); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); } ret = -ERESTARTNOHAND; } else if (sigmask) diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index 421323e..d82c073 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -80,6 +80,19 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag) #define set_need_resched() set_thread_flag(TIF_NEED_RESCHED) #define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED) -#endif +#ifdef TIF_RESTORE_SIGMASK +/** + * set_restore_sigmask() - make sure saved_sigmask processing gets done + * + * This sets TIF_RESTORE_SIGMASK and ensures that the arch signal code + * will run before returning to user mode, to process the flag. + */ +static inline void set_restore_sigmask(void) +{ + set_thread_flag(TIF_RESTORE_SIGMASK); +} +#endif /* TIF_RESTORE_SIGMASK */ + +#endif /* __KERNEL__ */ #endif /* _LINUX_THREAD_INFO_H */ diff --git a/kernel/compat.c b/kernel/compat.c index 5f0e201..a830c84 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -899,7 +899,7 @@ asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat current->state = TASK_INTERRUPTIBLE; schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); return -ERESTARTNOHAND; } #endif /* __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND */ @@ -1081,4 +1081,3 @@ compat_sys_sysinfo(struct compat_sysinfo __user *info) return 0; } - diff --git a/kernel/signal.c b/kernel/signal.c index 6af1210..977b3cd 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2610,7 +2610,7 @@ asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize) current->state = TASK_INTERRUPTIBLE; schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); + set_restore_sigmask(); return -ERESTARTNOHAND; } #endif /* __ARCH_WANT_SYS_RT_SIGSUSPEND */ -- 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/