Purpose: Track 'the time interrupt is disabled' due to spin_lock_irq*()
kernel functions. Takes an argument[holdtime in ms] and prints the process
(and its call stack) which disables interrupt more than the given time.

Argument: Time in ms (Minimum value is 2)

Output format:
	 <current_time> time=<val> ms lock=<val> pid=<val> cpu=<val> cmd=<val>
         followed by stack dump

Sample output: Shown below.

# ./spinlock_time.d 1
Error: Argument should be >= 2 ( millisec) [2023 Jan 18 10:15:38]


# ./spinlock_time.d 2
Processes holding spinlock_irq longer than 2 ms [2023 Jan 18 10:21:28]
----------------------------------------------------------------------

[2023 Jan 18 10:21:32] time=2 ms lock=ffffc41bff5083a0 pid=28352 cpu=39 cmd=osysmond.bin

              vmlinux`do_invalid_op+0x20
              vmlinux`invalid_op+0x11a
              vmlinux`_raw_spin_unlock_irqrestore+0x14
              iova`fq_flush_timeout+0x66
              vmlinux`call_timer_fn+0x3c
              vmlinux`run_timer_softirq+0x209
              vmlinux`__do_softirq+0xe1
              vmlinux`irq_exit+0xf6
              vmlinux`smp_apic_timer_interrupt+0x91
              vmlinux`apic_timer_interrupt+0x1c6
              vmlinux`__raw_spin_unlock+0x10
              vmlinux`dput+0xc9
              vmlinux`proc_fill_cache+0x81
              vmlinux`proc_readfd_common+0xe8
              vmlinux`proc_readfd+0x15
              vmlinux`iterate_dir+0x98
              vmlinux`SyS_getdents+0x98
              vmlinux`do_syscall_64+0x79
              vmlinux`entry_SYSCALL_64+0x191