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Author SHA1 Message Date
Michael Ellerman 3752e453f6 selftests/powerpc: Add tests of PMU EBBs 
The Power8 Performance Monitor Unit (PMU) has a new feature called Event
Based Branches (EBB). This commit adds tests of the kernel API for using
EBBs.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 2014-06-11 17:03:58 +10:00
Michael Ellerman cb96143def selftests: Add test of PMU instruction counting on powerpc 
This commit adds a test of instruction counting using the PMU on powerpc.

Although the bulk of the code is architecture agnostic, the code needs to
run a precisely sized loop which is implemented in assembler.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 2013-08-14 14:57:10 +10:00