Messages in this thread | | | Date | Sun, 11 Oct 2009 04:54:41 +0200 | From | Christoph Hellwig <> | Subject | perf trace errors |
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I get some rather interesting errors using perf trace with the block tracepoints on current mainline, e.g.:
perf record -f -e 'block:block_bio_queue:record' -R -F 1 -a -s <do some disk I/O end then ctrl+c> ^C[ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.237 MB perf.data (~10362 samples) ]
brick:/home/hch# perf trace Fatal: unknown op '-' xfssyncd-4232 [000] 87.798249255: block_bio_queue: 253,
There are lots of occurances of that exactly same warning in builtin-trace.c, and the code sourrouning them is sufficiently enough convoluted that I'm not able to track it down.
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