Re: [PATCH 2/4] signal: add a helper for dequeuing signals from a specified queue
From: Michael Kerrisk <hidden>
Date: 2012-12-24 20:52:22
Also in:
linux-fsdevel, lkml
[CC+=linux-api] On Mon, Dec 24, 2012 at 9:13 AM, Andrey Vagin [off-list ref] wrote:
quoted hunk
Cc: Ingo Molnar <redacted> Cc: Peter Zijlstra <redacted> Cc: Serge Hallyn <redacted> Cc: Oleg Nesterov <redacted> Cc: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> Cc: "Eric W. Biederman" <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org> Cc: Al Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org> Cc: Pavel Emelyanov <redacted> CC: Cyrill Gorcunov <redacted> Signed-off-by: Andrey Vagin <redacted> --- include/linux/sched.h | 9 ++++++++- kernel/signal.c | 13 +++++++++---- 2 files changed, 17 insertions(+), 5 deletions(-)diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a0..de9a4bf 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h@@ -2159,7 +2159,14 @@ extern void flush_signals(struct task_struct *); extern void __flush_signals(struct task_struct *); extern void ignore_signals(struct task_struct *); extern void flush_signal_handlers(struct task_struct *, int force_default); -extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info); +extern int do_dequeue_signal(struct task_struct *tsk, + sigset_t *mask, siginfo_t *info, int queue); + +static inline int dequeue_signal(struct task_struct *tsk, + sigset_t *mask, siginfo_t *info) +{ + return do_dequeue_signal(tsk, mask, info, 0); +} static inline int dequeue_signal_lock(struct task_struct *tsk, sigset_t *mask, siginfo_t *info) {diff --git a/kernel/signal.c b/kernel/signal.c index 0af8868..91bb76f2 100644 --- a/kernel/signal.c +++ b/kernel/signal.c@@ -597,17 +597,22 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask, * Dequeue a signal and return the element to the caller, which is * expected to free it. * + * @queue: dequeue from a private queue, if a value is not positive
if a value is not positive ==> if value is nonpositive
+ * dequeue from a shared queue, if a value if not negative
if a value is not negative ==> if value is nonnegative Thanks, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface", http://blog.man7.org/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html