tools/testing/selftests/rcutorture/bin/kvm-check-branches.sh

   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