DM:tools: add scripts for VM exit analysis

Script usage:
[Usage] acrnalyze.py [options] [value] ...
[options]
-h: print this message
-i, --ifile=[string]: input file
-o, --ofile=[string]: output file
--vm_exit: to generate vm_exit report

Note: bash and python2 are required.

Example:
Assumed trace data have been copied to /home/xxxx/trace_data/20171115-101605
 # acrnalyze.py -i /home/xxxx/trace_data/20171115-101605/0 -o /home/xxxx/trac
   e_data/20171115-101605/cpu0 --vm_exit

 - "--vm_exit" specify the analysis to do, currently, only vm_exit analysis
   is supported.
 - A preprocess would be taken out to make the trace data start and end with
   an VM_ENTER, and a copy of original data file is saved with suffix ".orig";
 - Analysis report would be given on the std output and in a csv file with
   name specified via "-o outpu_file";

Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

Author: lyan3

devicemodel/tools/acrntrace/scripts/acrnalyze.py

@@ -0,0 +1,107 @@
+#!/usr/bin/python2
+# -*- coding: UTF-8 -*-
+
+"""
+This is the main script of arnalyzer, which:
+- parse the options
+- pre-process the trace data file
+- call a specific script to do analysis
+"""
+
+import sys
+import getopt
+import os
+from vmexit_analyze import analyze_vm_exit
+
+def usage():
+    """print the usage of the script
+    Args: NA
+    Returns: None
+    Raises: NA
+    """
+    print '''
+    [Usage] acrnalyze.py [options] [value] ...
+
+    [options]
+    -h: print this message
+    -i, --ifile=[string]: input file
+    -o, --ofile=[string]: output file
+    --vm_exit: to generate vm_exit report
+    '''
+
+def do_analysis(ifile, ofile, analyzer):
+    """do the specific analysis
+
+    Args:
+        ifile: input trace data file
+        ofile: output analysis report file
+        analyzer: a function do the specific analysis
+    Returns:
+        None
+    Raises:
+        NA
+    """
+    analyzer(ifile, ofile)
+
+# pre process to make sure the trace data start and end with VMENTER
+def pre_process(ifile, evstr):
+    """invoke sh script to preprocess the data file
+
+    Args:
+        ifile: input trace data file
+        evstr: event string, after the processing, the data file should
+                start and end with the string
+    Returns:
+        status of sh script execution
+    Raises:
+        NA
+    """
+    status = os.system('bash pre_process.sh %s %s' % (ifile, evstr))
+    return status
+
+def main(argv):
+    """Main enterance function
+
+    Args:
+        argv: arguments string
+    Returns:
+        None
+    Raises:
+        GetoptError
+    """
+    inputfile = ''
+    outputfile = ''
+    opts_short = "hi:o:"
+    opts_long = ["ifile=", "ofile=", "vm_exit"]
+
+    try:
+        opts, args = getopt.getopt(argv, opts_short, opts_long)
+    except getopt.GetoptError:
+        usage()
+        sys.exit(1)
+
+    for opt, arg in opts:
+        if opt == '-h':
+            usage()
+            sys.exit()
+        elif opt in ("-i", "--ifile"):
+            inputfile = arg
+        elif opt in ("-o", "--ofile"):
+            outputfile = arg
+        elif opt == "--vm_exit":
+            analyzer = analyze_vm_exit
+        else:
+            assert False, "unhandled option"
+
+    assert inputfile != '', "input file is required"
+    assert outputfile != '', "output file is required"
+    assert analyzer != '', 'MUST contain one of analyzer: ''vm_exit'
+
+    status = pre_process(inputfile, 'VM_ENTER')
+    if status == 0:
+        do_analysis(inputfile, outputfile, analyzer)
+    else:
+        print "Invalid trace data file %s" % (inputfile)
+
+if __name__ == "__main__":
+    main(sys.argv[1:])

devicemodel/tools/acrntrace/scripts/pre_process.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+IFILE=$1
+STR=$2
+BAK_FILE=${IFILE}.orig
+
+if [ ! -f $BAK_FILE ]; then
+	cp $IFILE $BAK_FILE
+fi
+
+echo $IFILE, $BAK_FILE, $STR
+
+FIRST_LINE=$(grep -n $STR -m 1 $IFILE | awk -F: '{print $1}')
+LAST_LINE=$(grep -n $STR $IFILE | tail -1 | awk -F: '{print $1}')
+TOTAL_LINE=$(wc -l $IFILE | awk '{print $1}')
+
+echo $FIRST_LINE, $LAST_LINE, $TOTAL_LINE
+
+if [[ $FIRST_LINE -ge $LAST_LINE || $LAST_LINE -gt $TOTAL_LINE ]]; then
+	exit 1
+fi
+
+if [[ $LAST_LINE -lt $TOTAL_LINE ]]; then
+	let LAST_LINE=$((LAST_LINE))+1
+	echo "sed -i ${LAST_LINE},${TOTAL_LINE}d $IFILE"
+	sed -i ${LAST_LINE}','${TOTAL_LINE}'d' $IFILE
+fi
+
+if [[ $FIRST_LINE -gt 2 ]]; then
+	let FIRST_LINE=$((FIRST_LINE))-1
+	echo "sed -i 2,${FIRST_LINE}d $IFILE"
+	sed -i '2,'${FIRST_LINE}'d' $IFILE
+fi