3rd-party/linux-kernel-module-cheat
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Code Issues Releases Wiki Activity

readfile moved into run dir to allow multiple parallel runs

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Set with --gem5-readefile helper
This commit is contained in:
Ciro Santilli
2018-09-09 13:03:49 +01:00
parent 40cd607f56
commit 6d17b2ef84
3 changed files with 20 additions and 14 deletions
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21
README.adoc
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@@ -7088,10 +7088,13 @@ time \
gem5 full system: gem5 full system:
.... ....
printf 'm5 exit' > data/readfile time \
./run --arch arm --gem5 --eval-busybox '/gem5.sh' ./run \
printf 'dhrystone 100000' > data/readfile --arch arm \
time ./run --arch arm --gem5-restore 1 --gem5 --eval-busybox '/gem5.sh' \
--gem5
--gem5-readfile 'dhrystone 100000' \
;
.... ....
QEMU user mode: QEMU user mode:
@@ -7645,25 +7648,21 @@ restore='-l 1 -- --cpu-type=HPI --restore-with-cpu=HPI --caches --l2cache --l1d_
# Generate a checkpoint after Linux boots, using the faster and less detailed CPU. # Generate a checkpoint after Linux boots, using the faster and less detailed CPU.
# The boot takes a while, be patient young Padawan. # The boot takes a while, be patient young Padawan.
printf '' > data/readfile
eval "$cmd" eval "$cmd"
# Restore the most recent checkpoint taken with the more detailed and slower HPI CPU, # Restore the most recent checkpoint taken with the more detailed and slower HPI CPU,
# and run the benchmark with parameter 1.000. We skip the boot completely, saving time! # and run the benchmark with parameter 1.000. We skip the boot completely, saving time!
printf 'dhrystone 1000' > data/readfile eval "${cmd} --gem5-readfile 'dhrystone 1000' ${restore}"
eval "${cmd} ${restore}"
./gem5-stat -a "$arch" ./gem5-stat -a "$arch"
# Now run again with another parameter 10.000. # Now run again with another parameter 10.000.
# This one should take more cycles! # This one should take more cycles!
printf 'dhrystone 10000' > data/readfile eval "${cmd} --gem5-readfile 'dhrystone 10000' ${restore}"
eval "${cmd} ${restore}"
./gem5-stat -a "$arch" ./gem5-stat -a "$arch"
# Get an interactive shell at the end of the restore # Get an interactive shell at the end of the restore
# if you need to debug something more interactively. # if you need to debug something more interactively.
printf 'sh' > data/readfile eval "${cmd} --gem5-readfile 'sh' ${restore}"
eval "${cmd} ${restore}"
.... ....
The `gem5-stats` commands output the approximate number of CPU cycles it took Dhrystone to run. The `gem5-stats` commands output the approximate number of CPU cycles it took Dhrystone to run.

4
common.py
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@@ -20,7 +20,6 @@ root_dir = os.path.dirname(os.path.abspath(__file__))
data_dir = os.path.join(root_dir, 'data') data_dir = os.path.join(root_dir, 'data')
p9_dir = os.path.join(data_dir, '9p') p9_dir = os.path.join(data_dir, '9p')
gem5_non_default_src_root_dir = os.path.join(data_dir, 'gem5') gem5_non_default_src_root_dir = os.path.join(data_dir, 'gem5')
gem5_readfile_file = os.path.join(data_dir, 'readfile')
out_dir = os.path.join(root_dir, 'out') out_dir = os.path.join(root_dir, 'out')
bench_boot = os.path.join(out_dir, 'bench-boot.txt') bench_boot = os.path.join(out_dir, 'bench-boot.txt')
common_dir = os.path.join(out_dir, 'common') common_dir = os.path.join(out_dir, 'common')
@@ -346,6 +345,7 @@ def setup(parser, **extra_args):
this.m5out_dir = os.path.join(this.gem5_run_dir, 'm5out') this.m5out_dir = os.path.join(this.gem5_run_dir, 'm5out')
this.stats_file = os.path.join(this.m5out_dir, 'stats.txt') this.stats_file = os.path.join(this.m5out_dir, 'stats.txt')
this.trace_txt_file = os.path.join(this.m5out_dir, 'trace.txt') this.trace_txt_file = os.path.join(this.m5out_dir, 'trace.txt')
this.gem5_readfile = os.path.join(this.gem5_run_dir, 'readfile')
this.gem5_termout_file = os.path.join(this.gem5_run_dir, 'termout.txt') this.gem5_termout_file = os.path.join(this.gem5_run_dir, 'termout.txt')
this.qemu_run_dir = os.path.join(this.out_arch_dir, 'qemu', str(args.run_id)) this.qemu_run_dir = os.path.join(this.out_arch_dir, 'qemu', str(args.run_id))
this.qemu_trace_basename = 'trace.bin' this.qemu_trace_basename = 'trace.bin'
@@ -370,7 +370,7 @@ def setup(parser, **extra_args):
this.executable = this.qemu_executable this.executable = this.qemu_executable
this.run_dir = this.qemu_run_dir this.run_dir = this.qemu_run_dir
this.termout_file = this.qemu_termout_file this.termout_file = this.qemu_termout_file
this.gem5_config_dir = os.path.join(this.gem5_src_dir, 'config') this.gem5_config_dir = os.path.join(this.gem5_src_dir, 'configs')
this.gem5_se_file = os.path.join(this.gem5_config_dir, 'example', 'se.py') this.gem5_se_file = os.path.join(this.gem5_config_dir, 'example', 'se.py')
this.gem5_fs_file = os.path.join(this.gem5_config_dir, 'example', 'fs.py') this.gem5_fs_file = os.path.join(this.gem5_config_dir, 'example', 'fs.py')
this.run_cmd_file = os.path.join(this.run_dir, 'run.sh') this.run_cmd_file = os.path.join(this.run_dir, 'run.sh')

9
run
View File

@@ -16,6 +16,7 @@ defaults = {
'extra_emulator_args': [], 'extra_emulator_args': [],
'gem5_biglittle': False, 'gem5_biglittle': False,
'gem5_exe_args': '', 'gem5_exe_args': '',
'gem5_readfile': '',
'gem5_restore': None, 'gem5_restore': None,
'graphic': False, 'graphic': False,
'initramfs': False, 'initramfs': False,
@@ -94,6 +95,8 @@ def main(args, extra_args=None):
trace_type = args.trace trace_type = args.trace
if args.gem5: if args.gem5:
with open(common.gem5_readfile, 'w') as readfile:
readfile.write(args.gem5_readfile)
memory = '{}B'.format(args.memory) memory = '{}B'.format(args.memory)
gem5_exe_args = shlex.split(args.gem5_exe_args) gem5_exe_args = shlex.split(args.gem5_exe_args)
if do_trace: if do_trace:
@@ -135,7 +138,7 @@ def main(args, extra_args=None):
'--kernel', common.vmlinux, '--kernel', common.vmlinux,
'--mem-size', memory, '--mem-size', memory,
'--num-cpus', str(args.cpus), '--num-cpus', str(args.cpus),
'--script', common.gem5_readfile_file, '--script', common.gem5_readfile,
] ]
if args.arch == 'x86_64': if args.arch == 'x86_64':
if args.kvm: if args.kvm:
@@ -350,6 +353,10 @@ gem.op5 --debug-flags=Exec fs.py --cpu-type=HPI --caches
'--gem5-biglittle', default=defaults['gem5_biglittle'], action='store_true', '--gem5-biglittle', default=defaults['gem5_biglittle'], action='store_true',
help='Use fs_bigLITTLE.py instead of fs.py' help='Use fs_bigLITTLE.py instead of fs.py'
) )
parser.add_argument(
'--gem5-readfile', default=defaults['gem5_readfile'],
help='Set the contents of m5 readfile to this string.'
)
init_group.add_argument( init_group.add_argument(
'-I', '--initramfs', default=defaults['initramfs'], action='store_true', '-I', '--initramfs', default=defaults['initramfs'], action='store_true',
help='Use initramfs instead of a root filesystem' help='Use initramfs instead of a root filesystem'