kernel_optimize_test/drivers/ntb/test
Logan Gunthorpe da573eaa3a ntb_perf: Improve thread handling to increase robustness
This commit accomplishes a few things:

1) Properly prevent multiple sets of threads from running at once using
a mutex. Lots of race issues existed with the thread_cleanup.

2) The mutex allows us to ensure that threads are finished before
tearing down the device or module.

3) Don't use kthread_stop when the threads can exit by themselves, as
this is counter-indicated by the kthread_create documentation. Threads
now wait for kthread_stop to occur.

4) Writing to the run file now blocks until the threads are complete.
The test can then be safely interrupted by a SIGINT.

Also, while I was at it:

5) debugfs_run_write shouldn't return 0 in the early check cases as this
could cause debugfs_run_write to loop undesirably.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2016-08-05 10:21:06 -04:00
..
Kconfig ntb: ntb perf tool 2016-01-17 22:08:05 -05:00
Makefile ntb: ntb perf tool 2016-01-17 22:08:05 -05:00
ntb_perf.c ntb_perf: Improve thread handling to increase robustness 2016-08-05 10:21:06 -04:00
ntb_pingpong.c
ntb_tool.c ntb_tool: Add memory window debug support 2016-08-05 10:21:06 -04:00