Hello Arun,
This bug was fixed already, but the commit isn't in Linus's tree yet.
http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=commit;h=49908a1b25d448d68fd26faca260e1850201575f
On 11/23/2011 10:51 AM, Arun Sharma wrote:
I'm using a 3.2-rc1 based kernel and perf userspace built from
tip/auto-latest (commit id e471db8) + Andrew Vagin's sleep profiling
patches.
# perf record -agT -e sched:sched_switch -F 100 -- sleep 3
[ perf record: Woken up 9 times to write data ]
[ perf record: Captured and wrote 4.044 MB perf.data (~176664 samples) ]
# perf script
Warning: Error: expected type 5 but read 4
Warning: Error: expected type 4 but read 0
Fatal: bad op token {
Is there a known incompatibility between kernel and userspace that
could explain this?
I don't see this problem with other trace points (eg: kmem:kmalloc).
-Arun
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