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authorAbutalib Aghayev <agayev@gmail.com>2016-02-09 08:17:50 -0700
committerJens Axboe <axboe@fb.com>2016-02-09 08:17:50 -0700
commit80c4041b2e7a7d5afb75df563bf51bb27773c095 (patch)
tree24269d0849176846ed7161b28c3cf7b97ce76029 /blkiomon.c
parent8a1209713563b4dedea962909c18b941fb09d01a (diff)
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blktrace: Use number of online CPUs
Currently, blktrace uses _SC_NPROCESSORS_CONF to find out the number of CPUs. This is a problem, because if you reduce the number of online CPUs by passing kernel parameter maxcpus, then blktrace fails to start with the error: FAILED to start thread on CPU 4: 22/Invalid argument FAILED to start thread on CPU 5: 22/Invalid argument ... The attached patch fixes it to use _SC_NPROCESSORS_ONLN. Signed-off-by: Jens Axboe <axboe@fb.com>
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