1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0+ 3# 4# Runs the C-language litmus tests matching the specified criteria. 5# Generates the output for each .litmus file into a corresponding 6# .litmus.out file, and does not judge the result. 7# 8# sh initlitmushist.sh 9# 10# Run from the Linux kernel tools/memory-model directory. 11# See scripts/parseargs.sh for list of arguments. 12# 13# This script can consume significant wallclock time and CPU, especially as 14# the value of --procs rises. On a four-core (eight hardware threads) 15# 2.5GHz x86 with a one-minute per-run timeout: 16# 17# --procs wallclock CPU timeouts tests 18# 1 0m11.241s 0m1.086s 0 19 19# 2 1m12.598s 2m8.459s 2 393 20# 3 1m30.007s 6m2.479s 4 2291 21# 4 3m26.042s 18m5.139s 9 3217 22# 5 4m26.661s 23m54.128s 13 3784 23# 6 4m41.900s 26m4.721s 13 4352 24# 7 5m51.463s 35m50.868s 13 4626 25# 8 10m5.235s 68m43.672s 34 5117 26# 9 15m57.80s 105m58.101s 69 5156 27# 10 16m14.13s 103m35.009s 69 5165 28# 20 27m48.55s 198m3.286s 156 5269 29# 30# Increasing the timeout on the 20-process run to five minutes increases 31# the runtime to about 90 minutes with the CPU time rising to about 32# 10 hours. On the other hand, it decreases the number of timeouts to 101. 33# 34# Note that there are historical tests for which herd7 will fail 35# completely, for example, litmus/manual/atomic/C-unlock-wait-00.litmus 36# contains a call to spin_unlock_wait(), which no longer exists in either 37# the kernel or LKMM. 38 39. scripts/parseargs.sh 40 41T=/tmp/initlitmushist.sh.$$ 42trap 'rm -rf $T' 0 43mkdir $T 44 45if test -d litmus 46then 47 : 48else 49 git clone https://github.com/paulmckrcu/litmus 50 ( cd litmus; git checkout origin/master ) 51fi 52 53# Create any new directories that have appeared in the github litmus 54# repo since the last run. 55if test "$LKMM_DESTDIR" != "." 56then 57 find litmus -type d -print | 58 ( cd "$LKMM_DESTDIR"; sed -e 's/^/mkdir -p /' | sh ) 59fi 60 61# Create a list of the C-language litmus tests with no more than the 62# specified number of processes (per the --procs argument). 63find litmus -name '*.litmus' -print | mselect7 -arch C > $T/list-C 64xargs < $T/list-C -r grep -L "^P${LKMM_PROCS}" > $T/list-C-short 65 66scripts/runlitmushist.sh < $T/list-C-short 67 68exit 0 69