1 files changed, 150 insertions, 0 deletions
diff --git a/script/perf-read-sideband.bash b/script/perf-read-sideband.bash
new file mode 100755
index 0000000000000..f13884bc590ec
--- /dev/null
+++ b/script/perf-read-sideband.bash
@@ -0,0 +1,150 @@
+#! /bin/bash
+#
+# Copyright (c) 2015-2019, Intel Corporation
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice,
+#    this list of conditions and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#  * Neither the name of Intel Corporation nor the names of its contributors
+#    may be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+set -e
+
+prog=`basename $0`
+
+usage() {
+    cat <<EOF
+usage: $prog [<options>] <perf.data-file>
+
+Extract the sideband records from a perf data file.
+
+options:
+  -h  this text
+  -d  print commands, don't execute them
+
+<perf.data-file> defaults to perf.data.
+EOF
+}
+
+dry_run=0
+while getopts "hd" opt; do
+    case $opt in
+        h)
+            usage
+            exit 0
+            ;;
+        d)
+            dry_run=1
+            ;;
+    esac
+done
+
+shift $(($OPTIND-1))
+
+
+if [[ $# == 0 ]]; then
+    file="perf.data"
+elif [[ $# == 1 ]]; then
+    file="$1"
+    shift
+else
+    usage
+    exit 1
+fi
+
+base="$(basename $file)"
+
+if [[ "$dry_run" == 0 ]]; then
+    nofiles=0
+
+    for ofile in $base-sideband-cpu*.pevent $base-sideband.pevent; do
+        if [[ -w $ofile ]]; then
+            echo "$prog: $ofile is in the way."
+            nofiles+=1
+        fi
+    done
+
+    if [[ "$nofiles" > 0 ]]; then
+        exit 1
+    fi
+fi
+
+
+perf script --no-itrace -i "$file" -D | gawk -F' ' -- '
+  function handle_record(ofile, offset, size) {
+    cmd = sprintf("dd if=%s of=%s conv=notrunc oflag=append ibs=1 skip=%d " \
+                  "count=%d status=none", file, ofile, offset, size)
+
+    if (dry_run != 0) {
+      print cmd
+    }
+    else {
+      system(cmd)
+    }
+
+    next
+  }
+
+  function handle_global_record(offset, size) {
+    ofile = sprintf("%s-sideband.pevent", base)
+
+    handle_record(ofile, offset, size)
+  }
+
+  function handle_cpu_record(cpu, offset, size) {
+    # (uint32_t) -1 = 4294967295
+    #
+    if (cpu == -1 || cpu == 4294967295) {
+      handle_global_record(offset, size);
+    }
+    else {
+      ofile = sprintf("%s-sideband-cpu%d.pevent", base, cpu)
+
+      handle_record(ofile, offset, size)
+    }
+  }
+
+  /PERF_RECORD_AUXTRACE_INFO/  { next }
+  /PERF_RECORD_AUXTRACE/       { next }
+  /PERF_RECORD_FINISHED_ROUND/ { next }
+
+  /^[0-9]+ [0-9]+ 0x[0-9a-f]+ \[0x[0-9a-f]+\]: PERF_RECORD_/ {
+    cpu   = strtonum($1)
+    begin = strtonum($3)
+    size  = strtonum(substr($4, 2))
+
+    handle_cpu_record(cpu, begin, size)
+  }
+
+  /^[0-9]+ 0x[0-9a-f]+ \[0x[0-9a-f]+\]: PERF_RECORD_/ {
+    begin = strtonum($2)
+    size  = strtonum(substr($3, 2))
+
+    handle_global_record(begin, size)
+  }
+
+  /^0x[0-9a-f]+ \[0x[0-9a-f]+\]: PERF_RECORD_/ {
+    begin = strtonum($1)
+    size  = strtonum(substr($2, 2))
+
+    handle_global_record(begin, size)
+  }
+' file="$file" base="$base" dry_run="$dry_run"