#!/bin/bash # # Build a kvm-ready Linux kernel from the tree in the current directory. # # Usage: kvm-build.sh config-template build-dir more-configs # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, you can access it online at # http://www.gnu.org/licenses/gpl-2.0.html. # # Copyright (C) IBM Corporation, 2011 # # Authors: Paul E. McKenney config_template=${1} if test -z "$config_template" -o ! -f "$config_template" -o ! -r "$config_template" then echo "kvm-build.sh :$config_template: Not a readable file" exit 1 fi builddir=${2} if test -z "$builddir" -o ! -d "$builddir" -o ! -w "$builddir" then echo "kvm-build.sh :$builddir: Not a writable directory, cannot build into it" exit 1 fi moreconfigs=${3} if test -z "$moreconfigs" -o ! -r "$moreconfigs" then echo "kvm-build.sh :$moreconfigs: Not a readable file" exit 1 fi T=/tmp/test-linux.sh.$$ trap 'rm -rf $T' 0 mkdir $T grep -v 'CONFIG_[A-Z]*_TORTURE_TEST' < ${config_template} > $T/config cat << ___EOF___ >> $T/config CONFIG_INITRAMFS_SOURCE="$TORTURE_INITRD" CONFIG_VIRTIO_PCI=y CONFIG_VIRTIO_CONSOLE=y ___EOF___ cat $moreconfigs >> $T/config configinit.sh $T/config O=$builddir retval=$? if test $retval -gt 1 then exit 2 fi ncpus=`cpus2use.sh` make O=$builddir -j$ncpus $TORTURE_KMAKE_ARG > $builddir/Make.out 2>&1 retval=$? if test $retval -ne 0 || grep "rcu[^/]*": < $builddir/Make.out | egrep -q "Stop|Error|error:|warning:" || egrep -q "Stop|Error|error:" < $builddir/Make.out then echo Kernel build error egrep "Stop|Error|error:|warning:" < $builddir/Make.out echo Run aborted. exit 3 fi inux/net-next.git/log/fs/afs/afs_fs.h'>
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /fs/afs/afs_fs.h
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/afs/afs_fs.h')