lock_task_sighand

Name:lock_task_sighand

Proto:static inline struct sighand_struct *lock_task_sighand(struct task_struct *task, unsigned long *flags)

Type:struct sighand_struct

Parameter:

Type	Parameter	Name
struct task_struct *	task
unsigned long *	flags

673

ret = __lock_task_sighand(task, flags)

674

__cond_lock( & siglock, ret)

675

Return ret

**Caller**
Name	Describe
ptrace_getsiginfo
ptrace_setsiginfo
ptrace_request
do_send_sig_info
kill_pid_usb_asyncio	The usb asyncio usage of siginfo is wrong
send_sigqueue
getrusage
autogroup_task_get
autogroup_move_group
fake_signal_wake_up
posix_cpu_timer_del	Clean up a CPU-clock timer that is about to be destroyed.* This is called from timer deletion with the timer already locked.* If we return TIMER_RETRY, it's necessary to release the timer's lock* and try again
posix_cpu_timer_set	Guts of sys_timer_settime for CPU timers.* This is called with the timer locked and interrupts disabled.* If we return TIMER_RETRY, it's necessary to release the timer's lock* and try again. (This happens when the timer is in the middle of firing.)
posix_cpu_timer_get
posix_cpu_timer_rearm
run_posix_cpu_timers	This is called from the timer interrupt handler. The irq handler has* already updated our counts. We need to check if any timers fire now.* Interrupts are disabled.
cgroup_freeze_task	Freeze or unfreeze the task by setting or clearing the JOBCTL_TRAP_FREEZE* jobctl bit.
fill_stats_for_tgid
zap_threads

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