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authorJeff Moyer <jmoyer@redhat.com>2012-12-05 20:17:21 +0100
committerJens Axboe <axboe@kernel.dk>2012-12-05 20:17:21 +0100
commit8fa72d234da9b6b473bbb1f74d533663e4996e6b (patch)
tree536b8d2cf5aa3f0baee3aa0d89e602733be3df56 /drivers/scsi
parentc304a51bf42a7ce48f430a371e1213472c89e13d (diff)
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bdi: add a user-tunable cpu_list for the bdi flusher threads
In realtime environments, it may be desirable to keep the per-bdi flusher threads from running on certain cpus. This patch adds a cpu_list file to /sys/class/bdi/* to enable this. The default is to tie the flusher threads to the same numa node as the backing device (though I could be convinced to make it a mask of all cpus to avoid a change in behaviour). Thanks to Jeremy Eder for the original idea. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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