lkml.org 
[lkml]   [2015]   [Jun]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 7/9]powerpc/powernv: Event attr creation and PMU registration
Date
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


\
 
 \ /
  Last update: 2015-06-02 18:41    [W:0.273 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site