Re: [PATCH] perf_counter: cleanup for __perf_event_sched_in()

[Paul Mackerras]

Xiao Guangrong writes:

> It must be a group leader if event->attr.pinned is "1"

True, but you shouldn't use BUG_ON unless there is no sensible way for
the kernel to continue executing, and that's not the case here.  Make
it WARN_ON, or better still, WARN_ON_ONCE.

Paul.
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