Re: register_timer_hook use in arch/sh/oprofile

[Paul Mackerras]

Paul Mundt writes:

> Yes, that all works fine. My comment was more in reference to the
> hardware performance counters that don't have IRQs of their own, which
> still need to be tied in to the perf_counter API.

For them you would need to check in hw_perf_counter_init() that
counter->attr.sample_period is zero, and fail with an -EINVAL error if
it isn't.

Paul.
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