[Introduction]
The following shell scripts utilize 'perf' with ARM/PL310 PMU for memcpy
profiling.
 - perf_memcpy_I2_l2x0.sh
   script for I2 with both ARM Cortex-A9 PMU & PL310 PMU profiling.
 - perf_memcpy_I3.sh
   script for I2 with both ARM Cortex-A9 PMU & LLC PMU profiling.

[Prerequisites]
for I2:
 - Linux 3.18 Kernel with the follwoing CONFIGs:
   CONFIG_HAVE_PERF_EVENTS=y
   CONFIG_PERF_EVENTS=y
   CONFIG_HW_PERF_EVENTS=y
   CONFIG_CACHE_L2X0_PMU=y
 - perf executable
 - mstar ms_sys driver
 - shell script (perf_memcpy_I2_l2x0.sh)

for I3:
 - Linux 3.18 Kernel with the follwoing CONFIGs:
   CONFIG_HAVE_PERF_EVENTS=y
   CONFIG_PERF_EVENTS=y
   CONFIG_HW_PERF_EVENTS=y
 - perf executable
 - mstar ms_sys driver
 - shell script (perf_memcpy_I3.sh)

[Usage]

for I2:

Usage: ./perf_memcpy_I2_l2x0.sh BUFFER_SIZE L2_PMU_SELECT [memcpy scheme]
[memory type] [cachable]
    BUFFER_SIZE: number of KB for each iteration (total bytes transfer: 64KB *
10000)
    L2_PMU_SELECT: valid option r|w|e|x
                          r: drreq and drhit
                          w: dwreq and dwhit
                          e: cc and ipfalloc
                          x: dwtreq and wa
    [memcpy scheme]: valid option 0|1|2
                          0: C runtime memcpy
                          1: memcpy.S with NEON
                          2: memcpy.S without NEON
    [memory type]: valid option MIU|IMI
    [cachable]: valid option 0|1

EXAMPLE: ./perf_memcpy_I2_l2x0.sh 32 r 0
    [CRT] memcpy scheme test with [32]KB buffer for 20000 iterations and use
perf PMU for profiling with addtional L2 PMU [drreq/drhit].

for I3:

Usage: ./perf_memcpy_I3.sh BUFFER_SIZE L2_PMU_SELECT [memcpy scheme] [memory
type] [cachable]
    BUFFER_SIZE: number of KB for each iteration (total bytes transfer: 64KB *
10000)
    L2_PMU_SELECT:  not valid for  I3
    [memcpy scheme]: valid option 0|1|2
                          0: C runtime memcpy
                          1: memcpy.S with NEON
                          2: memcpy.S without NEON
    [memory type]: valid option MIU|IMI
    [cachable]: valid option 0|1

EXAMPLE: ./perf_memcpy_I3.sh 32 r 0
    [CRT] memcpy scheme test with [32]KB buffer for 20000 iterations and use
perf PMU for profiling with LLC PMU.