perf/amd/ibs: Add ->check_period() callback
IBS Fetch and IBS Op PMUs have constraints on sample period. The sample period is verified at the time of opening an event but not at the ioctl() interface. Hence, a user can open an event with valid period but change it later with ioctl(). Add a ->check_period() callback to verify the period provided at ioctl() is also valid. Signed-off-by:Ravi Bangoria <ravi.bangoria@amd.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by:
Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/r/20250115054438.1021-8-ravi.bangoria@amd.com
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