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| author | Oleg Nesterov <oleg@redhat.com> | 2013-01-21 20:47:41 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-01-22 08:50:08 -0800 |
| commit | 910ffdb18a6408e14febbb6e4b6840fd2c928c82 (patch) | |
| tree | 258a215685f2ca2bb11dcd92582e0adafbd83f7b /include/linux/sched.h | |
| parent | 9a9284153d965a57edc7162a8e57c14c97f3a935 (diff) | |
| download | linux-910ffdb18a6408e14febbb6e4b6840fd2c928c82.tar.gz linux-910ffdb18a6408e14febbb6e4b6840fd2c928c82.tar.bz2 linux-910ffdb18a6408e14febbb6e4b6840fd2c928c82.zip | |
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/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 6fc8f45de4e9..d2112477ff5e 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. |