linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2014-07-28	selftests/powerpc: Dump MMCR2 as part of the EBB HW state	Michael Ellerman	1	-4/+6
	Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-28	selftests/powerpc: Move core_busy_loop() into asm	Michael Ellerman	1	-251/+0
	There is at least one bug in core_busy_loop(), we use r0, but it's not in the clobber list. We were getting away with this it seems but that was luck. It's also fishy to be touching the stack, even if we do it below the stack pointer. It seems we get away with it, but looking at the generated code that may just be luck. So move it into assembler, do all the stack handling by hand. We create a stack frame to save the non-volatiles in, so we can muck around with them. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-06-11	selftests/powerpc: Add tests of PMU EBBs	Michael Ellerman	1	-0/+727
	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>