will-it-scale

#!/bin/sh

# thread mode of mmap* fail to run on lkp-knl-f1 due to severe lock contention
# on the process wide mm->mmap_sem. The symptom is that the main thread will
# need too long a time(I gave up waiting after 20 minutes) to even finish
# creating those threads and during this time, the job is deemed soft timedout.

# contains(string, substring)
#
# Returns 0 if the specified string contains the specified substring,
# otherwise returns 1.
# http://stackoverflow.com/questions/2829613/how-do-you-tell-if-a-string-contains-another-string-in-unix-shell-scripting
contains() {
    string="$1"
    substring="$2"
    if [ "${string#*$substring}" != "$string" ]; then
	    return 0    # $substring is in $string
    else
	    return 1    # $substring is not in $string
    fi
}

mmap_or_brk() {
	if contains "$will_it_scale_test" "mmap" || contains "$will_it_scale_test" "brk"; then
		return 0
	else
		return 1
	fi
}

thread_mode() {
	if [ -z "$mode" ]  || [ "$mode" = "both" ] || [ "$mode" = "thread" ]; then
		return 0
	else
		return 1
	fi
}

if [ "$testbox" = "lkp-knl-f1" ] && mmap_or_brk && thread_mode; then
	echo "rm $job_file due to $will_it_scale_test are known to fail on $testbox"
	exit 1
fi

exit 0