Commit 885dcd70 authored by Anju T Sudhakar's avatar Anju T Sudhakar Committed by Michael Ellerman

powerpc/perf: Add nest IMC PMU support

Add support to register Nest In-Memory Collection PMU counters.
Patch adds a new device file called "imc-pmu.c" under powerpc/perf
folder to contain all the device PMU functions.

Device tree parser code added to parse the PMU events information
and create sysfs event attributes for the PMU.

Cpumask attribute added along with Cpu hotplug online/offline functions
specific for nest PMU. A new state "CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE"
added for the cpu hotplug callbacks. Error handle path frees the memory
and unregisters the CPU hotplug callbacks.
Signed-off-by: default avatarAnju T Sudhakar <>
Signed-off-by: default avatarHemant Kumar <>
Signed-off-by: default avatarMadhavan Srinivasan <>
Signed-off-by: default avatarMichael Ellerman <>
parent 8f95faaa
......@@ -8,6 +8,7 @@ obj64-$(CONFIG_PPC_PERF_CTRS) += power4-pmu.o ppc970-pmu.o power5-pmu.o \
isa207-common.o power8-pmu.o power9-pmu.o
obj32-$(CONFIG_PPC_PERF_CTRS) += mpc7450-pmu.o
obj-$(CONFIG_PPC_POWERNV) += imc-pmu.o
obj-$(CONFIG_FSL_EMB_PERF_EVENT) += core-fsl-emb.o
obj-$(CONFIG_FSL_EMB_PERF_EVENT_E500) += e500-pmu.o e6500-pmu.o
This diff is collapsed.
......@@ -108,6 +108,11 @@ static int imc_pmu_create(struct device_node *parent, int pmu_index, int domain)
/* Function to register IMC pmu */
ret = init_imc_pmu(parent, pmu_ptr, pmu_index);
if (ret)
pr_err("IMC PMU %s Register failed\n", pmu_ptr->;
return 0;
......@@ -139,6 +139,7 @@ enum cpuhp_state {
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