1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0+
3 #
4 # Run a group of kvm.sh tests on the specified commits. This currently
5 # unconditionally does three-minute runs on each scenario in CFLIST,
6 # taking advantage of all available CPUs and trusting the "make" utility.
7 # In the short term, adjustments can be made by editing this script and
8 # CFLIST. If some adjustments appear to have ongoing value, this script
9 # might grow some command-line arguments.
10 #
11 # Usage: kvm-check-branches.sh commit1 commit2..commit3 commit4 ...
12 #
13 # This script considers its arguments one at a time. If more elaborate
14 # specification of commits is needed, please use "git rev-list" to
15 # produce something that this simple script can understand. The reason
16 # for retaining the simplicity is that it allows the user to more easily
17 # see which commit came from which branch.
18 #
19 # This script creates a yyyy.mm.dd-hh.mm.ss-group entry in the "res"
20 # directory. The calls to kvm.sh create the usual entries, but this script
21 # moves them under the yyyy.mm.dd-hh.mm.ss-group entry, each in its own
22 # directory numbered in run order, that is, "0001", "0002", and so on.
23 # For successful runs, the large build artifacts are removed. Doing this
24 # reduces the disk space required by about two orders of magnitude for
25 # successful runs.
26 #
27 # Copyright (C) Facebook, 2020
28 #
29 # Authors: Paul E. McKenney <paulmck@kernel.org>
30
31 if ! git status > /dev/null 2>&1
32 then
33 echo '!!!' This script needs to run in a git archive. 1>&2
34 echo '!!!' Giving up. 1>&2
35 exit 1
36 fi
37
38 # Remember where we started so that we can get back at the end.
39 curcommit="`git status | head -1 | awk '{ print $NF }'`"
40
41 nfail=0
42 ntry=0
43 resdir="tools/testing/selftests/rcutorture/res"
44 ds="`date +%Y.%m.%d-%H.%M.%S`-group"
45 if ! test -e $resdir
46 then
47 mkdir $resdir || :
48 fi
49 mkdir $resdir/$ds
50 echo Results directory: $resdir/$ds
51
52 RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
53 PATH=${RCUTORTURE}/bin:$PATH; export PATH
54 . functions.sh
55 echo Using all `identify_qemu_vcpus` CPUs.
56
57 # Each pass through this loop does one command-line argument.
58 for gitbr in $@
59 do
60 echo ' --- git branch ' $gitbr
61
62 # Each pass through this loop tests one commit.
63 for i in `git rev-list "$gitbr"`
64 do
65 ntry=`expr $ntry + 1`
66 idir=`awk -v ntry="$ntry" 'END { printf "%04d", ntry; }' < /dev/null`
67 echo ' --- commit ' $i from branch $gitbr
68 date
69 mkdir $resdir/$ds/$idir
70 echo $gitbr > $resdir/$ds/$idir/gitbr
71 echo $i >> $resdir/$ds/$idir/gitbr
72
73 # Test the specified commit.
74 git checkout $i > $resdir/$ds/$idir/git-checkout.out 2>&1
75 echo git checkout return code: $? "(Commit $ntry: $i)"
76 kvm.sh --allcpus --duration 3 --trust-make --datestamp "$ds/$idir" > $resdir/$ds/$idir/kvm.sh.out 2>&1
77 ret=$?
78 echo kvm.sh return code $ret for commit $i from branch $gitbr
79 echo Run results: $resdir/$ds/$idir
80 if test "$ret" -ne 0
81 then
82 # Failure, so leave all evidence intact.
83 nfail=`expr $nfail + 1`
84 else
85 # Success, so remove large files to save about 1GB.
86 ( cd $resdir/$ds/$idir/$rrd; rm -f */vmlinux */bzImage */System.map */Module.symvers )
87 fi
88 done
89 done
90 date
91
92 # Go back to the original commit.
93 git checkout "$curcommit"
94
95 if test $nfail -ne 0
96 then
97 echo '!!! ' $nfail failures in $ntry 'runs!!!'
98 exit 1
99 else
100 echo No failures in $ntry runs.
101 exit 0
102 fi
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