linux-toradex.git/include/linux/torture.h, branch v4.16-rc4

torture: Eliminate torture_runnable and perf_runnable

2017-12-11T17:18:29+00:00

The purpose of torture_runnable is to allow rcutorture and locktorture
to be started and stopped via sysfs when they are built into the kernel
(as in not compiled as loadable modules).  However, the 0444 permissions
for both instances of torture_runnable prevent this use case from ever
being put into practice.  Given that there have been no complaints
about this deficiency, it is reasonable to conclude that no one actually
makes use of this sysfs capability.  The perf_runnable module parameter
for rcuperf is in the same situation.

This commit therefore removes both torture_runnable instances as well
as perf_runnable.

Reported-by: Thomas Gleixner 
Signed-off-by: Paul E. McKenney

torture: Reduce #ifdefs for preempt_schedule()

2017-12-11T17:18:22+00:00

This commit adds a torture_preempt_schedule() that is nothingness
in !PREEMPT builds and is preempt_schedule() otherwise.  Then
torture_preempt_schedule() is used to eliminate several ugly #ifdefs,
both in rcutorture and in locktorture.

Signed-off-by: Paul E. McKenney

torture: TOROUT_STRING(): Insert a space between flag and message

2016-08-22T17:10:12+00:00

The TOROUT_STRING() macro does not insert a space between the flag and
the message.  In contrast, other similar torture-test dmesg messages
consistently supply a single space character.  This difference makes the
output hard to read and to mechanically parse.  This commit therefore
adds a space character between flag and message in TOROUT_STRING() output.

Signed-off-by: SeongJae Park 
Signed-off-by: Paul E. McKenney

torture: Break online and offline functions out of torture_onoff()

2016-06-14T23:02:16+00:00

This commit breaks torture_online() and torture_offline() out of
torture_onoff() in preparation for allowing waketorture finer-grained
control of its CPU-hotplug workload.

Signed-off-by: Paul E. McKenney

torture: Address race in module cleanup

2014-09-16T20:41:06+00:00

When performing module cleanups by calling torture_cleanup() the
'torture_type' string in nullified However, callers are not necessarily
done, and might still need to reference the variable. This impacts
both rcutorture and locktorture, causing printing things like:

[   94.226618] (null)-torture: Stopping lock_torture_writer task
[   94.226624] (null)-torture: Stopping lock_torture_stats task

Thus delay this operation until the very end of the cleanup process.
The consequence (which shouldn't matter for this kid of program) is,
of course, that we delay the window between rmmod and modprobing,
for instance in module_torture_begin().

Signed-off-by: Davidlohr Bueso 
Signed-off-by: Paul E. McKenney

rcu: Use pr_alert/pr_cont for printing logs

2014-09-07T23:24:47+00:00

User pr_alert/pr_cont for printing the logs from rcutorture module directly
instead of writing it to a buffer and then printing it. This allows us from not
having to allocate such buffers. Also remove a resulting empty function.

I tested this using the parse-torture.sh script as follows:

$ dmesg | grep torture > log.txt
$ bash parse-torture.sh log.txt test
$

There were no warnings which means that parsing went fine.

Signed-off-by: Joe Perches 
Signed-off-by: Pranith Kumar 
Signed-off-by: Paul E. McKenney

torture: Remove unused definition

2014-05-14T16:46:32+00:00

The torture_parm() macro is the same as torture_param(), and torture_parm()
is not used.  This commit therefore removes torture_parm().

Signed-off-by: Pranith Kumar 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

torture: Check for multiple concurrent torture tests

2014-05-14T16:46:29+00:00

The torture tests are designed to run in isolation, but do not enforce
this isolation.  This commit therefore checks for concurrent torture
tests, and refuses to start new tests while old tests are running.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcutorture: Stop generic kthreads in torture_cleanup()

2014-02-23T17:04:27+00:00

The specific torture modules (like rcutorture) need to call
torture_cleanup() in any case, so this commit makes torture_cleanup()
deal with torture_shutdown_cleanup() and torture_stutter_cleanup() so
that the specific modules don't have to deal with these details.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcutorture: Abstract torture_stop_kthread()

2014-02-23T17:04:25+00:00

Stopping of kthreads is not RCU-specific, so this commit abstracts
out torture_stop_kthread(), saving a few lines of code in the process.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett