[linux-2.6-block.git] / tools / virtio / ringtest / run-on-all.sh

#!/bin/sh

#use last CPU for host. Why not the first?
#many devices tend to use cpu0 by default so
#it tends to be busier
HOST_AFFINITY=$(lscpu -p=cpu | tail -1)

#run command on all cpus
for cpu in $(seq 0 $HOST_AFFINITY)
do
	#Don't run guest and host on same CPU
	#It actually works ok if using signalling
	if
		(echo "$@" | grep -e "--sleep" > /dev/null) || \
			test $HOST_AFFINITY '!=' $cpu
	then
		echo "GUEST AFFINITY $cpu"
		"$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu
	fi
done
echo "NO GUEST AFFINITY"
"$@" --host-affinity $HOST_AFFINITY
echo "NO AFFINITY"
"$@"
Commit	Line	Data
481eaec3 MT	1	#!/bin/sh
	2
	3	#use last CPU for host. Why not the first?
	4	#many devices tend to use cpu0 by default so
	5	#it tends to be busier
ef1b144d	6	HOST_AFFINITY=$(lscpu -p=cpu \| tail -1)
481eaec3 MT	7
481eaec3 MT	8	#run command on all cpus
ef1b144d	9	for cpu in $(seq 0 $HOST_AFFINITY)
481eaec3 MT	10	do
	11	#Don't run guest and host on same CPU
	12	#It actually works ok if using signalling
	13	if
	14	(echo "$@" \| grep -e "--sleep" > /dev/null) \|\| \
	15	test $HOST_AFFINITY '!=' $cpu
	16	then
	17	echo "GUEST AFFINITY $cpu"
	18	"$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu
	19	fi
	20	done
	21	echo "NO GUEST AFFINITY"
	22	"$@" --host-affinity $HOST_AFFINITY
	23	echo "NO AFFINITY"
	24	"$@"