fs_bigLITTLE: patch gem5 like a pro without checkout

Author: cirosantilli

README.adoc

@@ -5516,7 +5516,7 @@ arch=aarch64
 # Generate a checkpoint after Linux boots.
 # The boot takes a while, be patient young Padawan.
 printf 'm5 exit' > data/readfile
-./run -a "$arch" -g -F 'm5 checkpoint;m5 readfile > a.sh;sh a.sh'
+./run -a "$arch" -g -F '/5 checkpoint;m5 readfile > a.sh;sh a.sh'
 
 # Restore the checkpoint, and run the benchmark with parameter 1.000.
 # We skip the boot completely, saving time!
@@ -6522,7 +6522,6 @@ The `-X-b` option enables the alternative `configs/example/arm/fs_bigLITTLE.py`
 First apply:
 
 ....
-cd gem5/gem5
 echo '
 diff --git a/configs/example/arm/fs_bigLITTLE.py b/configs/example/arm/fs_bigLITTLE.py
 index 7d66c03a6..d71e714fe 100644
@@ -6537,7 +6536,7 @@ index 7d66c03a6..d71e714fe 100644
          "rw",
          "init=%s" % options.kernel_init,
          "vmalloc=768MB",
-' | patch -p1
+' | patch -d gem5/gem5 -p1
 ....
 
 then: