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