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authorLogan Gunthorpe <logang@deltatee.com>2016-06-20 22:15:05 +0300
committerJon Mason <jdmason@kudzu.us>2016-08-05 17:21:06 +0300
commitda573eaa3a13f60efafcbe25e4f4465cf1a1b40b (patch)
tree4de19d41638f8499bbc19a80c7cbd9c36c5bac1f /drivers/spmi
parentfd2ecd885bab8e456298d0b702806ea736456c62 (diff)
downloadlinux-da573eaa3a13f60efafcbe25e4f4465cf1a1b40b.tar.xz
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>
Diffstat (limited to 'drivers/spmi')
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