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authorOleg Nesterov <oleg@redhat.com>2013-01-21 20:47:41 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2013-01-22 08:50:08 -0800
commit910ffdb18a6408e14febbb6e4b6840fd2c928c82 (patch)
tree258a215685f2ca2bb11dcd92582e0adafbd83f7b /include
parent9a9284153d965a57edc7162a8e57c14c97f3a935 (diff)
ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up()
Cleanup and preparation for the next change. signal_wake_up(resume => true) is overused. None of ptrace/jctl callers actually want to wakeup a TASK_WAKEKILL task, but they can't specify the necessary mask. Turn signal_wake_up() into signal_wake_up_state(state), reintroduce signal_wake_up() as a trivial helper, and add ptrace_signal_wake_up() which adds __TASK_TRACED. This way ptrace_signal_wake_up() can work "inside" ptrace_request() even if the tracee doesn't have the TASK_WAKEKILL bit set. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sched.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6fc8f45de4e..d2112477ff5 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2714,7 +2714,16 @@ static inline void thread_group_cputime_init(struct signal_struct *sig)
extern void recalc_sigpending_and_wake(struct task_struct *t);
extern void recalc_sigpending(void);
-extern void signal_wake_up(struct task_struct *t, int resume_stopped);
+extern void signal_wake_up_state(struct task_struct *t, unsigned int state);
+
+static inline void signal_wake_up(struct task_struct *t, bool resume)
+{
+ signal_wake_up_state(t, resume ? TASK_WAKEKILL : 0);
+}
+static inline void ptrace_signal_wake_up(struct task_struct *t, bool resume)
+{
+ signal_wake_up_state(t, resume ? __TASK_TRACED : 0);
+}
/*
* Wrappers for p->thread_info->cpu access. No-op on UP.