#!/bin/sh # description: Test creation and deletion of trace instances while setting an event if [ ! -d instances ] ; then echo "no instance directory with this kernel" exit_unsupported; fi fail() { # mesg rmdir foo 2>/dev/null echo $1 set -e exit $FAIL } cd instances # we don't want to fail on error set +e mkdir x rmdir x result=$? if [ $result -ne 0 ]; then echo "instance rmdir not supported" exit_unsupported fi instance_slam() { while :; do mkdir foo 2> /dev/null rmdir foo 2> /dev/null done } instance_read() { while :; do cat foo/trace 1> /dev/null 2>&1 done } instance_set() { while :; do echo 1 > foo/events/sched/sched_switch done 2> /dev/null } instance_slam & p1=$! echo $p1 instance_set & p2=$! echo $p2 instance_read & p3=$! echo $p3 sleep 1 kill -1 $p3 kill -1 $p2 kill -1 $p1 echo "Wait for processes to finish" wait $p1 $p2 $p3 echo "all processes finished, wait for cleanup" sleep 1 mkdir foo ls foo > /dev/null rmdir foo if [ -d foo ]; then fail "foo still exists" fi exit 0 instance_slam() { while :; do mkdir x mkdir y mkdir z rmdir x rmdir y rmdir z done 2>/dev/null } instance_slam & p1=$! echo $p1 instance_slam & p2=$! echo $p2 instance_slam & p3=$! echo $p3 instance_slam & p4=$! echo $p4 instance_slam & p5=$! echo $p5 ls -lR >/dev/null sleep 1 kill -1 $p1 kill -1 $p2 kill -1 $p3 kill -1 $p4 kill -1 $p5 echo "Wait for processes to finish" wait $p1 $p2 $p3 $p4 $p5 echo "all processes finished, wait for cleanup" mkdir x y z ls x y z rmdir x y z for d in x y z; do if [ -d $d ]; then fail "instance $d still exists" fi done set -e exit 0 t-next.git/tree/drivers/usb/misc/uss720.c?h=nds-private-remove&id=f7d6040aa45df6ffd9e891114125dc919f18b96b'>treecommitdiff
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td class='right'>2017-01-30 13:15:41 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600
commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /tools/perf/util/demangle-rust.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 'tools/perf/util/demangle-rust.c')