ftrace_syscall_exit

Name:ftrace_syscall_exit

Proto:static void ftrace_syscall_exit(void *data, struct pt_regs *regs, long ret)

Type:void

Parameter:

Type	Parameter	Name
void *	data
struct pt_regs *	regs
long	ret

365

tr = data

375

syscall_nr = trace_get_syscall_nr(current process, regs)

376

If syscall_nr < 0 || syscall_nr >= NR_syscalls Then Return

380

trace_file = fetch RCU-sched-protected pointer for dereferencing(exit_syscall_files[syscall_nr])

381

If Not trace_file Then Return

384

If race_trigger_soft_disabled - do triggers and test if soft disabled*@file: The file pointer of the event to test* If any triggers without filters are attached to this event, they* will be called here Then Return

387

sys_data = syscall_nr_to_meta(syscall_nr)

388

If Not sys_data Then Return

391

local_save_flags(irq_flags)

392

pc = We mask the PREEMPT_NEED_RESCHED bit so as not to confuse all current users* that think a non-zero value indicates we cannot preempt.

394

buffer = buffer

395

event = trace_buffer_lock_reserve(buffer, type, size of entry , irq_flags, pc)

398

If Not event Then Return

401

entry = g_buffer_event_data - return the data of the event*@event: the event to get the data from

402

nr = syscall_nr

403

ret = syscall_get_return_value(current process, regs)

405

vent_trigger_unlock_commit - handle triggers and finish event commit*@file: The file pointer assoctiated to the event*@buffer: The ring buffer that the event is being written to*@event: The event meta data in the ring buffer*@entry: The event

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