From: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Anton Blanchard <anton@samba.org>,
Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>,
Daniel Axtens <dja@axtens.net>,
Stephane Eranian <eranian@google.com>
Subject: [PATCH v7 5/7] powerpc/powernv: add event attribute and group to nest pmu
Date: Mon, 3 Aug 2015 13:05:57 +0530 [thread overview]
Message-ID: <1438587359-6165-6-git-send-email-maddy@linux.vnet.ibm.com> (raw)
In-Reply-To: <1438587359-6165-1-git-send-email-maddy@linux.vnet.ibm.com>
Add code to create event/format attributes and attribute groups for
each nest pmu.
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Anton Blanchard <anton@samba.org>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
---
arch/powerpc/perf/nest-pmu.c | 61 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
diff --git a/arch/powerpc/perf/nest-pmu.c b/arch/powerpc/perf/nest-pmu.c
index 292fc2b91ed0..4a74ffb97741 100644
--- a/arch/powerpc/perf/nest-pmu.c
+++ b/arch/powerpc/perf/nest-pmu.c
@@ -13,6 +13,17 @@
static struct perchip_nest_info p8_nest_perchip_info[P8_NEST_MAX_CHIPS];
static struct nest_pmu *per_nest_pmu_arr[P8_NEST_MAX_PMUS];
+PMU_FORMAT_ATTR(event, "config:0-20");
+static struct attribute *p8_nest_format_attrs[] = {
+ &format_attr_event.attr,
+ NULL,
+};
+
+static struct attribute_group p8_nest_format_group = {
+ .name = "format",
+ .attrs = p8_nest_format_attrs,
+};
+
static int nest_event_info(char *name, struct nest_ima_events *p8_events)
{
char *buf;
@@ -60,6 +71,53 @@ static int nest_event_info_val(char *name, u32 val,
return 0;
}
+/*
+ * Populate event name and string in attribute
+ */
+static struct attribute *dev_str_attr(const char *name, const char *str)
+{
+ struct perf_pmu_events_attr *attr;
+
+ attr = kzalloc(sizeof(*attr), GFP_KERNEL);
+
+ sysfs_attr_init(&attr->attr.attr);
+
+ attr->event_str = str;
+ attr->attr.attr.name = name;
+ attr->attr.attr.mode = 0444;
+ attr->attr.show = perf_event_sysfs_show;
+
+ return &attr->attr.attr;
+}
+
+static int update_events_in_group(
+ struct nest_ima_events *p8_events, int idx, struct nest_pmu *pmu)
+{
+ struct attribute_group *attr_group;
+ struct attribute **attrs;
+ int i;
+
+ /* Allocate memory for attribute group */
+ attr_group = kzalloc(sizeof(*attr_group), GFP_KERNEL);
+ if (!attr_group)
+ return -ENOMEM;
+
+ /* Allocate memory for attributes */
+ attrs = kzalloc((sizeof(struct attribute *) * (idx + 1)), GFP_KERNEL);
+ if (!attrs)
+ return -ENOMEM;
+
+ 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 nest_ima_events *p8_events;
@@ -105,6 +163,7 @@ static int nest_pmu_create(struct device_node *dev, int pmu_index)
/* Save the name to register it later */
sprintf(buf, "Nest_%s", (char *)pp->value);
pmu_ptr->pmu.name = (char *)buf;
+ pmu_ptr->attr_groups[1] = &p8_nest_format_group;
continue;
}
@@ -136,6 +195,8 @@ static int nest_pmu_create(struct device_node *dev, int pmu_index)
idx++;
}
+ update_events_in_group(p8_events, idx, pmu_ptr);
+
return 0;
}
--
1.9.1
next prev parent reply other threads:[~2015-08-03 7:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-03 7:35 [PATCH v7 0/7] powerpc/powernv: Nest Instrumentation support Madhavan Srinivasan
2015-08-03 7:35 ` [PATCH v7 1/7] powerpc/powernv: Data structure and macros definition Madhavan Srinivasan
2015-08-03 7:35 ` [PATCH v7 2/7] powerpc/powernv: Add OPAL support for Nest PMU Madhavan Srinivasan
2015-08-03 7:35 ` [PATCH v7 3/7] powerpc/powernv: Nest PMU detection and device tree parser Madhavan Srinivasan
2015-08-03 7:35 ` [PATCH v7 4/7] powerpc/powernv: detect supported nest pmus and its events Madhavan Srinivasan
2015-08-03 7:35 ` Madhavan Srinivasan [this message]
2015-08-03 7:35 ` [PATCH v7 6/7] powerpc/powernv: generic nest pmu event functions Madhavan Srinivasan
2015-08-03 7:35 ` [PATCH v7 7/7] powerpc/powernv: nest pmu cpumask and cpu hotplug support Madhavan Srinivasan
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