powerpc/perf: Add kconfig option for hypervisor provided counters

The commit adds a Kconfig option which allows the hv_gpci and hv_24x7
PMUs, added in the preceeding commits, to be built.

Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/perf/Makefile b/arch/powerpc/perf/Makefile
index 60d71eea919c7f2e64b8d74e6732e4883fa3f61b..f9c083a5652a4c2a99f6b13778d6f84feed9072e 100644 (file)
--- a/arch/powerpc/perf/Makefile
+++ b/arch/powerpc/perf/Makefile
@@ -11,5 +11,7 @@ obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450-pmu.o
 obj-$(CONFIG_FSL_EMB_PERF_EVENT) += core-fsl-emb.o
 obj-$(CONFIG_FSL_EMB_PERF_EVENT_E500) += e500-pmu.o e6500-pmu.o
 
+obj-$(CONFIG_HV_PERF_CTRS) += hv-24x7.o hv-gpci.o hv-common.o
+
 obj-$(CONFIG_PPC64)            += $(obj64-y)
 obj-$(CONFIG_PPC32)            += $(obj32-y)

diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 80b1d57c306a997e9b3c0a2933efa00ed1ac946e..2cb8b776c84a5660e5ef225cc004fbdcc9109f96 100644 (file)
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -111,6 +111,18 @@ config CMM
          will be reused for other LPARs. The interface allows firmware to
          balance memory across many LPARs.
 
+config HV_PERF_CTRS
+       bool "Hypervisor supplied PMU events (24x7 & GPCI)"
+       default y
+       depends on PERF_EVENTS && PPC_PSERIES
+       help
+         Enable access to hypervisor supplied counters in perf. Currently,
+         this enables code that uses the hcall GetPerfCounterInfo and 24x7
+         interfaces to retrieve counters. GPCI exists on Power 6 and later
+         systems. 24x7 is available on Power 8 systems.
+
+          If unsure, select Y.
+
 config DTL
        bool "Dispatch Trace Log"
        depends on PPC_SPLPAR && DEBUG_FS