Messages in this thread Patch in this message | | | From | Madhavan Srinivasan <> | Subject | [PATCH v1 7/9]powerpc/powernv: Event attr creation and PMU registration | Date | Tue, 2 Jun 2015 21:29:36 +0530 |
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Patch adds common event attribute function and Nest pmu registration call.
Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Stephane Eranian <eranian@google.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> --- arch/powerpc/perf/nest-pmu.c | 52 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)
diff --git a/arch/powerpc/perf/nest-pmu.c b/arch/powerpc/perf/nest-pmu.c index 514a0be..dd84fd7 100644 --- a/arch/powerpc/perf/nest-pmu.c +++ b/arch/powerpc/perf/nest-pmu.c @@ -244,6 +244,49 @@ static int update_pmu_ops(struct nest_pmu *pmu) return 0; } +/* + * Populate event name and string in attribute + */ +struct attribute *dev_str_attr(char *name, char *str) +{ + struct perf_pmu_events_attr *attr; + + attr = kzalloc(sizeof(*attr), GFP_KERNEL); + + attr->event_str = (const char *)str; + attr->attr.attr.name = name; + attr->attr.attr.mode = 0444; + attr->attr.show = perf_event_sysfs_show; + + return &attr->attr.attr; +} + +int update_events_in_group( + struct ppc64_nest_ima_events *p8_events, int idx, + struct nest_pmu *pmu) +{ + struct attribute_group *attr_group; + struct attribute **attrs; + int i; + + attr_group = kzalloc(((sizeof(struct attribute *) * (idx + 1)) + + sizeof(*attr_group)), GFP_KERNEL); + if (!attr_group) + return -ENOMEM; + + attrs = (struct attribute **)(attr_group + 1); + attr_group->name = "events"; + attr_group->attrs = attrs; + + for (i=0; i< idx; i++, p8_events++) + attrs[i] = dev_str_attr((char *)p8_events->ev_name, + (char *)p8_events->ev_value); + + pmu->attr_groups[0] = attr_group; + return 0; +} + + static int nest_pmu_create(struct device_node *dev, int pmu_index) { struct ppc64_nest_ima_events **p8_events_arr; @@ -364,6 +407,15 @@ static int nest_pmu_create(struct device_node *dev, int pmu_index) } } + update_events_in_group( + (struct ppc64_nest_ima_events *)p8_events_arr, + idx, pmu_ptr); + update_pmu_ops(pmu_ptr); + + /* Register the pmu */ + perf_pmu_register(&pmu_ptr->pmu, pmu_ptr->pmu.name, -1); + printk(KERN_INFO "Nest PMU %s Registered\n", pmu_ptr->pmu.name); + return 0; } -- 1.9.1
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