On Mon, Apr 28, 2014 at 05:24:55PM -0700, Paul E. McKenney wrote:
> Hello!
>
> This series provides torture-test updates:
>
> 1. Add forward-progress checking to distinguish between stalls in
> the RCU implementation and in the torture test itself.
>
> 2. Remove the --builddir and --relbuilddir options, which have been
> obsoleted by the parallel testing facility.
>
> 3. Make "--dryrun sched" output more readable by clearly indicating
> where each batch of concurrent runs starts.
>
> 4. Make torture-test errors less RCU-specific. ("Hey, why did
> my locktorture run complain about RCU???")
>
> 5,8-14. Rename variables to reflect the new RCU-independence of a number
> of the torture-test scripts.
>
> 6. Reduce locktorture sleeping to increase intensity.
>
> 7. Add a --defconfig argument to allow other default configs to
> be specified.
>
> 15. Make config-fragment filtering RCU-independent.
>
> 16. Mark private functions as static in kernel/rcu/torture.c,
> courtesy of Rashika Kheria.
>
> 17-18. Make the output of "--dryrun script" independently runnable.
>
> 19. Print negative numbers when SRCU counters wrap instead of
> huge 64-bit integers.
>
> 20. Fix "Stopping" torture messages.
>
> 21. Report any diagnostics issued by qemu.
>
> 22. Make kthreads spin during the last jiffy of a stutter period
> to increase the intensity of torture stop-start events.
>
> 23. Permit multiple qemu and boot arguments to be specified on
> the command line.
>
> 24. Choose bzImage location based on architecture.
>
> 25. Add tracing-enabled variant of TREE02 to aid debugging.
>
> 26. Dump the ftrace buffer when the RCU grace period stalls.
>
> 27. Export the RCU grace-period kthread wait state to rcutorture
> to ease diagnosis of RCU grace-period stalls.
>
> 28. Fix bug in raw_cpu_inc_return().
>
> 29. Make cond_resched() report RCU quiescent states.
>
> 30. Make rcu_torture_reader() use cond_resched() instead of
> unconditionally invoking schedule().
>
> 31. Complain if an all-zero cpumask is specified during a torture
> shuffle operation, courtesy of Iulia Manda.
>
> 32. Make build failures more evident.
>
> 33. Capture and report the torture_create_kthread() return value when
> creating the rcu_torture_fqs kthread.
>
> 34. Use elapsed time to detect hangs rather than counting "sleep 1"
> commands.
>
> 35. Rearrange config fragments to ensure that RCU-sched primitives are
> tested in TREE_PREEMPT_RCU kernels.
>
> 36. Add rcutorture tests for get_state_synchronize_rcu() and
> cond_synchronize_rcu().
>
> 37. Add explicit tests for synchronous grace-period primitives.
>
> 38. Add missing destroy_timer_on_stack(), courtesy of Thomas Gleixner.
>
> 39. Make scripts record "git diff HEAD" to ease reproduction of
> an unexpected torture-test result.
>
> 40. Run rcu_torture_writer() at normal priority.
>
> 41. Put the qemu process into the background to better handle
> kernel hangs.
>
> 42. Remove reference to a non-existent Kconfig parameter.
>
> 43. Refuse to run multiple concurrent torture tests.
>
> 44. Remove __init from torture_init_begin() and torture_init_end()
> to allow rcutorture to once again work as a loadable module.
>
> 45. Remove unused torture_parm() macro.
I responded with feedback on patches 1, 6, 7, 8, 10, 11, 12, 15, 18, 19,
20, 21, 24, 27, 32, 39, and 41.
For the remaining patches:
Reviewed-by: Josh Triplett <j...@joshtriplett.org>
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