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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-06-27 14:36:58 +0200 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-06-27 14:36:58 +0200 |
| commit | 4f5616e043f80d2ec2db242460714497f9c6b0eb (patch) | |
| tree | fc605f0bac6b82cdd77fdc6a341f34459d2c40bd | |
| parent | 84376b2a6aecec961b3253770b71e5e539ba0fb0 (diff) | |
| download | rt-tests-for-clark.tar.gz rt-tests-for-clark.tar.xz | |
man page for pip_stressfor-clark
The Debian package checker lintian criticizes that pip_stress doesn't have a
man page. So put a short version of the description from the source file
into a man page to make lintian happy.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | src/pi_tests/pip_stress.8 | 25 |
2 files changed, 26 insertions, 0 deletions
@@ -122,6 +122,7 @@ install: all gzip src/backfire/backfire.4 -c >"$(DESTDIR)$(mandir)/man4/backfire.4.gz" gzip src/cyclictest/cyclictest.8 -c >"$(DESTDIR)$(mandir)/man8/cyclictest.8.gz" gzip src/pi_tests/pi_stress.8 -c >"$(DESTDIR)$(mandir)/man8/pi_stress.8.gz" + gzip src/pi_tests/pip_stress.8 -c >"$(DESTDIR)$(mandir)/man8/pip_stress.8.gz" gzip src/hwlatdetect/hwlatdetect.8 -c >"$(DESTDIR)$(mandir)/man8/hwlatdetect.8.gz" gzip src/ptsematest/ptsematest.8 -c >"$(DESTDIR)$(mandir)/man8/ptsematest.8.gz" gzip src/sigwaittest/sigwaittest.8 -c >"$(DESTDIR)$(mandir)/man8/sigwaittest.8.gz" diff --git a/src/pi_tests/pip_stress.8 b/src/pi_tests/pip_stress.8 new file mode 100644 index 0000000..b733335 --- /dev/null +++ b/src/pi_tests/pip_stress.8 @@ -0,0 +1,25 @@ +.TH pip_stress 8 2011-06-24 +.SH NAME +pip_stress \- test priority inheritance between processes +.SH SYNOPSIS +.B pip_stress +.SH DESCRIPTION +.B pip_stress +creates a priority inversion using three processes and a priority inheritance +mutex shared via shared memory. +All three processes are bound to run on the same cpu. +The process with the lowest priority holds a mutex and is prempted by the +medium priority process that just runs an infinite loop. +The third process with the highest priority tries to grab the mutex that is +hold by the low prio process. +As a priority inheritance mutex is used the low priority process lends the high +priority process' priority to unlock the mutex and so stops the medium priority +process blocking the high priority one. + +.B pip_stress +doesn't take any options and quits as soon as the priority inversion is +resolved which should happen instantly. + +.SH AUTHOR +.B pip_stress +was written by John Kacur <jkacur@redhat.com>. |