powerpc/perf: Reject EBB events which specify a sample_type

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Although we already block EBB events which request sampling using
sample_period, technically it's possible for an event to set sample_type
but not sample_period.

Nothing terrible will happen if an EBB event does specify sample_type,
but it signals a major confusion on the part of userspace, and so we do
them the favor of rejecting it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Michael Ellerman 2014-03-14 16:00:30 +11:00 • committed by Benjamin Herrenschmidt

parent c2e37a2626

commit 58b5fb0049

1 changed files with 5 additions and 2 deletions

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arch/powerpc/perf/core-book3s.c

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