Re: perf: regression -- missing/sys/devices/system/cpu/perf_events

[Vince Weaver]

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@xxxxxxxxxxxx
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