#!/bin/bash

SYSFS=

prerequisite()
{
	msg="skip all tests:"

	if [ $UID != 0 ]; then
		echo $msg must be run as root >&2
		exit 0
	fi

	SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`

	if [ ! -d "$SYSFS" ]; then
		echo $msg sysfs is not mounted >&2
		exit 0
	fi

	if ! ls $SYSFS/devices/system/memory/memory* > /dev/null 2>&1; then
		echo $msg memory hotplug is not supported >&2
		exit 0
	fi
}

#
# list all hot-pluggable memory
#
hotpluggable_memory()
{
	local state=${1:-.\*}

	for memory in $SYSFS/devices/system/memory/memory*; do
		if grep -q 1 $memory/removable &&
		   grep -q $state $memory/state; then
			echo ${memory##/*/memory}
		fi
	done
}

hotplaggable_offline_memory()
{
	hotpluggable_memory offline
}

hotpluggable_online_memory()
{
	hotpluggable_memory online
}

memory_is_online()
{
	grep -q online $SYSFS/devices/system/memory/memory$1/state
}

memory_is_offline()
{
	grep -q offline $SYSFS/devices/system/memory/memory$1/state
}

online_memory()
{
	echo online > $SYSFS/devices/system/memory/memory$1/state
}

offline_memory()
{
	echo offline > $SYSFS/devices/system/memory/memory$1/state
}

online_memory_expect_success()
{
	local memory=$1

	if ! online_memory $memory; then
		echo $FUNCNAME $memory: unexpected fail >&2
	elif ! memory_is_online $memory; then
		echo $FUNCNAME $memory: unexpected offline >&2
	fi
}

online_memory_expect_fail()
{
	local memory=$1

	if online_memory $memory 2> /dev/null; then
		echo $FUNCNAME $memory: unexpected success >&2
	elif ! memory_is_offline $memory; then
		echo $FUNCNAME $memory: unexpected online >&2
	fi
}

offline_memory_expect_success()
{
	local memory=$1

	if ! offline_memory $memory; then
		echo $FUNCNAME $memory: unexpected fail >&2
	elif ! memory_is_offline $memory; then
		echo $FUNCNAME $memory: unexpected offline >&2
	fi
}

offline_memory_expect_fail()
{
	local memory=$1

	if offline_memory $memory 2> /dev/null; then
		echo $FUNCNAME $memory: unexpected success >&2
	elif ! memory_is_online $memory; then
		echo $FUNCNAME $memory: unexpected offline >&2
	fi
}

error=-12
priority=0
ratio=10

while getopts e:hp:r: opt; do
	case $opt in
	e)
		error=$OPTARG
		;;
	h)
		echo "Usage $0 [ -e errno ] [ -p notifier-priority ] [ -r percent-of-memory-to-offline ]"
		exit
		;;
	p)
		priority=$OPTARG
		;;
	r)
		ratio=$OPTARG
		;;
	esac
done

if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
	echo "error code must be -4095 <= errno < 0" >&2
	exit 1
fi

prerequisite

echo "Test scope: $ratio% hotplug memory"
echo -e "\t online all hotplug memory in offline state"
echo -e "\t offline $ratio% hotplug memory in online state"
echo -e "\t online all hotplug memory in offline state"

#
# Online all hot-pluggable memory
#
for memory in `hotplaggable_offline_memory`; do
	echo offline-online $memory
	online_memory_expect_success $memory
done

#
# Offline $ratio percent of hot-pluggable memory
#
for memory in `hotpluggable_online_memory`; do
	if [ $((RANDOM % 100)) -lt $ratio ]; then
		echo online-offline $memory
		offline_memory_expect_success $memory
	fi
done

#
# Online all hot-pluggable memory again
#
for memory in `hotplaggable_offline_memory`; do
	echo offline-online $memory
	online_memory_expect_success $memory
done

#
# Test with memory notifier error injection
#

DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/memory

prerequisite_extra()
{
	msg="skip extra tests:"

	/sbin/modprobe -q -r memory-notifier-error-inject
	/sbin/modprobe -q memory-notifier-error-inject priority=$priority

	if [ ! -d "$DEBUGFS" ]; then
		echo $msg debugfs is not mounted >&2
		exit 0
	fi

	if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
		echo $msg memory-notifier-error-inject module is not available >&2
		exit 0
	fi
}

prerequisite_extra

#
# Offline $ratio percent of hot-pluggable memory
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
for memory in `hotpluggable_online_memory`; do
	if [ $((RANDOM % 100)) -lt $ratio ]; then
		offline_memory_expect_success $memory
	fi
done

#
# Test memory hot-add error handling (offline => online)
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
for memory in `hotplaggable_offline_memory`; do
	online_memory_expect_fail $memory
done

#
# Online all hot-pluggable memory
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
for memory in `hotplaggable_offline_memory`; do
	online_memory_expect_success $memory
done

#
# Test memory hot-remove error handling (online => offline)
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
for memory in `hotpluggable_online_memory`; do
	offline_memory_expect_fail $memory
done

echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
/sbin/modprobe -q -r memory-notifier-error-inject
d'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;</td><td class='right'>2017-01-29 15:07:34 +0300</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 22:05:43 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ohci-at91.c?h=nds-private-remove&amp;id=1a0bee6c1e788218fd1d141db320db970aace7f0'>1a0bee6c1e788218fd1d141db320db970aace7f0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/host/ohci-at91.c?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=1a0bee6c1e788218fd1d141db320db970aace7f0'>46c4116bc8ef4a7df718516a648597d9e21c15f1</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/ohci-at91.c?h=nds-private-remove&amp;id=1a0bee6c1e788218fd1d141db320db970aace7f0'>drivers/usb/host/ohci-at91.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ohci-at91.c?h=nds-private-remove&amp;id=63c190429020a9701b42887ac22c28f287f1762f'>63c190429020a9701b42887ac22c28f287f1762f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ohci-at91.c?h=nds-private-remove&amp;id=1a0bee6c1e788218fd1d141db320db970aace7f0&amp;id2=63c190429020a9701b42887ac22c28f287f1762f'>diff</a>)</td></tr></table>
<div class='commit-subject'>sh_eth: rename EESIPR bits</div><div class='commit-msg'>Since the  commit  b0ca2a21f769 ("sh_eth: Add support of SH7763 to sh_eth")
the *enum* declaring the EESIPR bits (interrupt mask) went out of sync with
the *enum* declaring the EESR bits (interrupt status) WRT  bit naming  and
formatting. I'd like to restore the consistency by using EESIPR as the bit
name prefix, renaming the *enum* to EESIPR_BIT, and (finally) renaming the
bits according to the available  Renesas SH77{34|63} manuals; additionally,
reconstruct  couple names using  the EESR bit declaration above...

Signed-off-by: Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=1a0bee6c1e788218fd1d141db320db970aace7f0'>Diffstat</a> (limited to 'drivers/usb/host/ohci-at91.c')</div><table summary='diffstat' class='diffstat'>