gistfile1.txt

   PerfTop:    8086 irqs/sec  kernel:71.7%  exact:  0.0% [4000Hz cycles:ppp],  (all, 1 CPU)
-------------------------------------------------------------------------------

    13.09%  [kernel]       [k] schedule_timeout
    12.97%  [kernel]       [k] finish_task_switch
     6.54%  [kernel]       [k] atmel_spi_unlock
     4.02%  [kernel]       [k] __sched_text_start
     3.12%  [kernel]       [k] spi_finalize_current_message
     2.88%  [kernel]       [k] wait_for_common
     2.63%  [kernel]       [k] __spi_pump_messages
     2.58%  [kernel]       [k] preempt_count_sub
     2.36%  [kernel]       [k] __softirqentry_text_start
     1.91%  [kernel]       [k] __spi_sync
     1.69%  libc-2.30.so   [.] strcmp
     1.49%  [kernel]       [k] preempt_count_add
     1.32%  [kernel]       [k] __spi_validate
     1.31%  [kernel]       [k] schedule
     1.25%  libc-2.30.so   [.] memset
     1.18%  [kernel]       [k] del_timer.part.2
     0.91%  perf           [.] 0x00073bc4
     0.84%  [kernel]       [k] __memzero
     0.76%  [kernel]       [k] lock_timer_base
     0.61%  perf           [.] 0x0009d59c