$ /opt/stap/bin/stap -L 'kernel.trace("*sys*")'
kernel.trace("irq_matrix:irq_matrix_assign_system") $bit:int $matrix:struct irq_matrix*
kernel.trace("raw_syscalls:sys_enter") $regs:struct pt_regs* $id:long int
kernel.trace("raw_syscalls:sys_exit") $regs:struct pt_regs* $ret:long int
kernel.trace("ufs:ufshcd_system_resume") $dev_name:char const* $err:int $usecs:s64 $dev_state:int $link_state:int
kernel.trace("ufs:ufshcd_system_suspend") $dev_name:char const* $err:int $usecs:s64 $dev_state:int $link_state:int
kernel.trace("vsyscall:emulate_vsyscall") $nr:int