Documentation/ABI/testing/sysfs-profiling

   1 What:           /sys/kernel/profiling
   2 Date:           September 2008
   3 Contact:        Dave Hansen <dave@linux.vnet.ibm.com>
   4 Description:
   5                 /sys/kernel/profiling is the runtime equivalent
   6                 of the boot-time profile= option.
   7
   8                 You can get the same effect running::
   9
  10                         echo 2 > /sys/kernel/profiling
  11
  12                 as you would by issuing profile=2 on the boot
  13                 command line.