system: Linux mars.sprixweb.com 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64

cmd: 

/*
    Example of the perl systemtap tapset shows a nested view of perl subroutine
    calls and returns across the whole system.

    To run:
        stap perl-example.stp (for all perl processes)
    For specific perl process:
        stap perl-example.stp -c COMMAND
*/

probe perl.sub.call
{
    printf("%s => sub: %s, filename: %s, line: %d, package: %s\n",
        thread_indent(1), sub, filename, lineno, package)
}

probe perl.sub.return
{
    printf("%s <= sub: %s, filename: %s, line: %d, package: %s\n",
        thread_indent(-1), sub, filename, lineno, package)
}