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authorRoland McGrath <roland@redhat.com>2008-04-30 00:53:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 08:29:37 -0700
commitf3de272b821accbc8387211977c2de4f38468d05 (patch)
tree775b5b3db5a09176447d4e62e04077b63640a4d7
parent49eaeb4bc4c901c327ee259c7768be20fd020a30 (diff)
signals: use HAVE_SET_RESTORE_SIGMASK
Change all the #ifdef TIF_RESTORE_SIGMASK conditionals in non-arch code to #ifdef HAVE_SET_RESTORE_SIGMASK. If arch code defines it first, the generic set_restore_sigmask() using TIF_RESTORE_SIGMASK is not defined. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/compat.c8
-rw-r--r--fs/eventpoll.c4
-rw-r--r--fs/select.c8
-rw-r--r--include/linux/sched.h2
-rw-r--r--include/linux/thread_info.h10
5 files changed, 19 insertions, 13 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 9964d542ae9e..139dc93c092d 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1634,7 +1634,7 @@ sticky:
return ret;
}
-#ifdef TIF_RESTORE_SIGMASK
+#ifdef HAVE_SET_RESTORE_SIGMASK
asmlinkage long compat_sys_pselect7(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp, compat_ulong_t __user *exp,
struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask,
@@ -1825,7 +1825,7 @@ sticky:
return ret;
}
-#endif /* TIF_RESTORE_SIGMASK */
+#endif /* HAVE_SET_RESTORE_SIGMASK */
#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
/* Stuff for NFS server syscalls... */
@@ -2080,7 +2080,7 @@ long asmlinkage compat_sys_nfsservctl(int cmd, void *notused, void *notused2)
#ifdef CONFIG_EPOLL
-#ifdef TIF_RESTORE_SIGMASK
+#ifdef HAVE_SET_RESTORE_SIGMASK
asmlinkage long compat_sys_epoll_pwait(int epfd,
struct compat_epoll_event __user *events,
int maxevents, int timeout,
@@ -2124,7 +2124,7 @@ asmlinkage long compat_sys_epoll_pwait(int epfd,
return err;
}
-#endif /* TIF_RESTORE_SIGMASK */
+#endif /* HAVE_SET_RESTORE_SIGMASK */
#endif /* CONFIG_EPOLL */
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 71af2fc0041e..221086fef174 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1241,7 +1241,7 @@ error_return:
return error;
}
-#ifdef TIF_RESTORE_SIGMASK
+#ifdef HAVE_SET_RESTORE_SIGMASK
/*
* Implement the event wait interface for the eventpoll file. It is the kernel
@@ -1287,7 +1287,7 @@ asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
return error;
}
-#endif /* #ifdef TIF_RESTORE_SIGMASK */
+#endif /* HAVE_SET_RESTORE_SIGMASK */
static int __init eventpoll_init(void)
{
diff --git a/fs/select.c b/fs/select.c
index 32ce2b32fad1..2c292146e246 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -425,7 +425,7 @@ sticky:
return ret;
}
-#ifdef TIF_RESTORE_SIGMASK
+#ifdef HAVE_SET_RESTORE_SIGMASK
asmlinkage long sys_pselect7(int n, fd_set __user *inp, fd_set __user *outp,
fd_set __user *exp, struct timespec __user *tsp,
const sigset_t __user *sigmask, size_t sigsetsize)
@@ -528,7 +528,7 @@ asmlinkage long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
return sys_pselect7(n, inp, outp, exp, tsp, up, sigsetsize);
}
-#endif /* TIF_RESTORE_SIGMASK */
+#endif /* HAVE_SET_RESTORE_SIGMASK */
struct poll_list {
struct poll_list *next;
@@ -759,7 +759,7 @@ asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
return ret;
}
-#ifdef TIF_RESTORE_SIGMASK
+#ifdef HAVE_SET_RESTORE_SIGMASK
asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
struct timespec __user *tsp, const sigset_t __user *sigmask,
size_t sigsetsize)
@@ -839,4 +839,4 @@ asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
return ret;
}
-#endif /* TIF_RESTORE_SIGMASK */
+#endif /* HAVE_SET_RESTORE_SIGMASK */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index fe970cdca83c..86e60796db62 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1175,7 +1175,7 @@ struct task_struct {
struct sighand_struct *sighand;
sigset_t blocked, real_blocked;
- sigset_t saved_sigmask; /* To be restored with TIF_RESTORE_SIGMASK */
+ sigset_t saved_sigmask; /* restored if set_restore_sigmask() was used */
struct sigpending pending;
unsigned long sas_ss_sp;
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 81c5f82f0663..38a56477f27a 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -92,7 +92,13 @@ 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)
-#ifdef TIF_RESTORE_SIGMASK
+#if defined TIF_RESTORE_SIGMASK && !defined HAVE_SET_RESTORE_SIGMASK
+/*
+ * An arch can define its own version of set_restore_sigmask() to get the
+ * job done however works, with or without TIF_RESTORE_SIGMASK.
+ */
+#define HAVE_SET_RESTORE_SIGMASK 1
+
/**
* set_restore_sigmask() - make sure saved_sigmask processing gets done
*
@@ -109,7 +115,7 @@ static inline void set_restore_sigmask(void)
set_thread_flag(TIF_RESTORE_SIGMASK);
set_thread_flag(TIF_SIGPENDING);
}
-#endif /* TIF_RESTORE_SIGMASK */
+#endif /* TIF_RESTORE_SIGMASK && !HAVE_SET_RESTORE_SIGMASK */
#endif /* __KERNEL__ */