#!/bin/sh # Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved. # # 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 would 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. # # Author: Alexey Kodanev # Modified: Naresh Kamboju MODULE=0 dev_makeswap=-1 dev_mounted=-1 trap INT check_prereqs() { local msg="skip all tests:" local uid=$(id -u) if [ $uid -ne 0 ]; then echo $msg must be run as root >&2 exit 0 fi } zram_cleanup() { echo "zram cleanup" local i= for i in $(seq 0 $dev_makeswap); do swapoff /dev/zram$i done for i in $(seq 0 $dev_mounted); do umount /dev/zram$i done for i in $(seq 0 $(($dev_num - 1))); do echo 1 > /sys/block/zram${i}/reset rm -rf zram$i done } zram_unload() { if [ $MODULE -ne 0 ] ; then echo "zram rmmod zram" rmmod zram > /dev/null 2>&1 fi } zram_load() { # check zram module exists MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko if [ -f $MODULE_PATH ]; then MODULE=1 echo "create '$dev_num' zram device(s)" modprobe zram num_devices=$dev_num if [ $? -ne 0 ]; then echo "failed to insert zram module" exit 1 fi dev_num_created=$(ls /dev/zram* | wc -w) if [ "$dev_num_created" -ne "$dev_num" ]; then echo "unexpected num of devices: $dev_num_created" ERR_CODE=-1 else echo "zram load module successful" fi elif [ -b /dev/zram0 ]; then echo "/dev/zram0 device file found: OK" else echo "ERROR: No zram.ko module or no /dev/zram0 device found" echo "$TCID : CONFIG_ZRAM is not set" exit 1 fi } zram_max_streams() { echo "set max_comp_streams to zram device(s)" local i=0 for max_s in $zram_max_streams; do local sys_path="/sys/block/zram${i}/max_comp_streams" echo $max_s > $sys_path || \ echo "FAIL failed to set '$max_s' to $sys_path" sleep 1 local max_streams=$(cat $sys_path) [ "$max_s" -ne "$max_streams" ] && \ echo "FAIL can't set max_streams '$max_s', get $max_stream" i=$(($i + 1)) echo "$sys_path = '$max_streams' ($i/$dev_num)" done echo "zram max streams: OK" } zram_compress_alg() { echo "test that we can set compression algorithm" local algs=$(cat /sys/block/zram0/comp_algorithm) echo "supported algs: $algs" local i=0 for alg in $zram_algs; do local sys_path="/sys/block/zram${i}/comp_algorithm" echo "$alg" > $sys_path || \ echo "FAIL can't set '$alg' to $sys_path" i=$(($i + 1)) echo "$sys_path = '$alg' ($i/$dev_num)" done echo "zram set compression algorithm: OK" } zram_set_disksizes() { echo "set disk size to zram device(s)" local i=0 for ds in $zram_sizes; do local sys_path="/sys/block/zram${i}/disksize" echo "$ds" > $sys_path || \ echo "FAIL can't set '$ds' to $sys_path" i=$(($i + 1)) echo "$sys_path = '$ds' ($i/$dev_num)" done echo "zram set disksizes: OK" } zram_set_memlimit() { echo "set memory limit to zram device(s)" local i=0 for ds in $zram_mem_limits; do local sys_path="/sys/block/zram${i}/mem_limit" echo "$ds" > $sys_path || \ echo "FAIL can't set '$ds' to $sys_path" i=$(($i + 1)) echo "$sys_path = '$ds' ($i/$dev_num)" done echo "zram set memory limit: OK" } zram_makeswap() { echo "make swap with zram device(s)" local i=0 for i in $(seq 0 $(($dev_num - 1))); do mkswap /dev/zram$i > err.log 2>&1 if [ $? -ne 0 ]; then cat err.log echo "FAIL mkswap /dev/zram$1 failed" fi swapon /dev/zram$i > err.log 2>&1 if [ $? -ne 0 ]; then cat err.log echo "FAIL swapon /dev/zram$1 failed" fi echo "done with /dev/zram$i" dev_makeswap=$i done echo "zram making zram mkswap and swapon: OK" } zram_swapoff() { local i= for i in $(seq 0 $dev_makeswap); do swapoff /dev/zram$i > err.log 2>&1 if [ $? -ne 0 ]; then cat err.log echo "FAIL swapoff /dev/zram$i failed" fi done dev_makeswap=-1 echo "zram swapoff: OK" } zram_makefs() { local i=0 for fs in $zram_filesystems; do # if requested fs not supported default it to ext2 which mkfs.$fs > /dev/null 2>&1 || fs=ext2 echo "make $fs filesystem on /dev/zram$i" mkfs.$fs /dev/zram$i > err.log 2>&1 if [ $? -ne 0 ]; then cat err.log echo "FAIL failed to make $fs on /dev/zram$i" fi i=$(($i + 1)) echo "zram mkfs.$fs: OK" done } zram_mount() { local i=0 for i in $(seq 0 $(($dev_num - 1))); do echo "mount /dev/zram$i" mkdir zram$i mount /dev/zram$i zram$i > /dev/null || \ echo "FAIL mount /dev/zram$i failed" dev_mounted=$i done echo "zram mount of zram device(s): OK" } noscript>
authorChristoph Hellwig <hch@lst.de>2017-01-30 13:15:41 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600
commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /sound/usb/6fire/comm.c
parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
PCI/MSI: Don't apply affinity if there aren't enough vectors left
Bart reported a problem wіth an out of bounds access in the low-level IRQ affinity code, which we root caused to the qla2xxx driver assigning all its MSI-X vectors to the pre and post vectors, and not having any left for the actually spread IRQs. Fix this issue by not asking for affinity assignment when there are no vectors to assign left. Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()") Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com Reported-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'sound/usb/6fire/comm.c')