Messages in this thread | | | Date | Tue, 24 May 2011 16:12:49 -0400 (EDT) | From | Vince Weaver <> | Subject | Re: perf: regression -- missing /sys/devices/system/cpu/perf_events |
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On Tue, 24 May 2011, Ingo Molnar wrote: > > So, what is wrong with the method Peter suggested: the presence of the perf > syscall (it not returning -ENOSYS) is bona fide evidence that perf is > available.
it's just hard to do that from a shell script.
also, running the perf syscall can be tricky if you have a new kernel but an older set of header files that doesn't have the syscall number defined.
Vince vweaver1@eecs.utk.edu
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