tree a778e0cdef0a9bf3138246fe56817125282e9eeb
parent 860aad71fc7022e5a3907afe50fd96a11e546802
author Michael Ellerman <michael@ellerman.id.au> 1366918107 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1366956670 +1000

powerpc/perf: Add support for SIER

On power8 we have a new SIER (Sampled Instruction Event Register), which
captures information about instructions when we have random sampling
enabled.

Add support for loading the SIER into pt_regs, overloading regs->dar.
Also set the new NO_SIPR flag in regs->result if we don't have SIPR.

Update regs_sihv/sipr() to look for SIPR/SIHV in SIER.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>