Merge tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git...
[platform/kernel/linux-starfive.git] / scripts / stackusage
1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3
4 outfile=""
5 now=`date +%s`
6
7 while [ $# -gt 0 ]
8 do
9     case "$1" in
10         -o)
11             outfile="$2"
12             shift 2;;
13         -h)
14             echo "usage: $0 [-o outfile] <make options/args>"
15             exit 0;;
16         *)  break;;
17     esac
18 done
19
20 if [ -z "$outfile" ]
21 then
22     outfile=`mktemp --tmpdir stackusage.$$.XXXX`
23 fi
24
25 KCFLAGS="${KCFLAGS} -fstack-usage" make "$@"
26
27 # Prepend directory name to file names, remove column information,
28 # make file:line/function/size/type properly tab-separated.
29 find . -name '*.su' -newermt "@${now}" -print |                     \
30     xargs perl -MFile::Basename -pe                                 \
31         '$d = dirname($ARGV); s#([^:]+:[0-9]+):[0-9]+:#$d/$1\t#;' | \
32     sort -k3,3nr > "${outfile}"
33
34 echo "$0: output written to ${outfile}"