void ftrace_syscall_exit(struct pt_regs *regs, long ret) { struct syscall_trace_exit *entry; struct syscall_metadata *sys_data; struct ring_buffer_event *event; struct ring_buffer *buffer; int syscall_nr; syscall_nr = syscall_get_nr(current, regs); if (syscall_nr < 0) return; if (!test_bit(syscall_nr, enabled_exit_syscalls)) return; sys_data = syscall_nr_to_meta(syscall_nr); if (!sys_data) return; event = trace_current_buffer_lock_reserve(&buffer, sys_data->exit_id, sizeof(*entry), 0, 0); if (!event) return; entry = ring_buffer_event_data(event); entry->nr = syscall_nr; entry->ret = syscall_get_return_value(current, regs); if (!filter_current_check_discard(buffer, sys_data->exit_event, entry, event)) trace_current_buffer_unlock_commit(buffer, event, 0, 0); }
void ftrace_syscall_enter(struct pt_regs *regs, long id) { struct syscall_trace_enter *entry; struct syscall_metadata *sys_data; struct ring_buffer_event *event; struct ring_buffer *buffer; int size; int syscall_nr; syscall_nr = syscall_get_nr(current, regs); if (syscall_nr < 0) return; if (!test_bit(syscall_nr, enabled_enter_syscalls)) return; sys_data = syscall_nr_to_meta(syscall_nr); if (!sys_data) return; size = sizeof(*entry) + sizeof(unsigned long) * sys_data->nb_args; event = trace_current_buffer_lock_reserve(&buffer, sys_data->enter_id, size, 0, 0); if (!event) return; entry = ring_buffer_event_data(event); entry->nr = syscall_nr; syscall_get_arguments(current, regs, 0, sys_data->nb_args, entry->args); if (!filter_current_check_discard(buffer, sys_data->enter_event, entry, event)) trace_current_buffer_unlock_commit(buffer, event, 0, 0); }
static void ftrace_syscall_enter(void *data, struct pt_regs *regs, long id) { struct trace_array *tr = data; struct syscall_trace_enter *entry; struct syscall_metadata *sys_data; struct ring_buffer_event *event; struct ring_buffer *buffer; unsigned long irq_flags; int pc; int syscall_nr; int size; syscall_nr = trace_get_syscall_nr(current, regs); if (syscall_nr < 0 || syscall_nr >= NR_syscalls) return; if (!test_bit(syscall_nr, tr->enabled_enter_syscalls)) return; sys_data = syscall_nr_to_meta(syscall_nr); if (!sys_data) return; size = sizeof(*entry) + sizeof(unsigned long) * sys_data->nb_args; local_save_flags(irq_flags); pc = preempt_count(); buffer = tr->trace_buffer.buffer; event = trace_buffer_lock_reserve(buffer, sys_data->enter_event->event.type, size, irq_flags, pc); if (!event) return; entry = ring_buffer_event_data(event); entry->nr = syscall_nr; syscall_get_arguments(current, regs, 0, sys_data->nb_args, entry->args); if (!filter_current_check_discard(buffer, sys_data->enter_event, entry, event)) trace_current_buffer_unlock_commit(buffer, event, irq_flags, pc); }
void ftrace_syscall_exit(void *ignore, struct pt_regs *regs, long ret) { struct syscall_trace_exit *entry; struct syscall_metadata *sys_data; struct ring_buffer_event *event; struct ring_buffer *buffer; unsigned long irq_flags; int pc; int syscall_nr; syscall_nr = syscall_get_nr(current, regs); if (syscall_nr < 0) return; if (!test_bit(syscall_nr, enabled_exit_syscalls)) return; sys_data = syscall_nr_to_meta(syscall_nr); if (!sys_data) return; local_save_flags(irq_flags); pc = preempt_count(); event = trace_current_buffer_lock_reserve(&buffer, sys_data->exit_event->event.type, sizeof(*entry), irq_flags, pc); if (!event) return; entry = ring_buffer_event_data(event); entry->nr = syscall_nr; entry->ret = syscall_get_return_value(current, regs); if (!filter_current_check_discard(buffer, sys_data->exit_event, entry, event)) trace_current_buffer_unlock_commit(buffer, event, irq_flags, pc); }