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authorNeil Leeder <nleeder@codeaurora.org>2017-09-14 15:30:13 -0400
committerWill Deacon <will.deacon@arm.com>2017-10-02 10:13:06 +0100
commitb65423ed466fb0494ef81a2c4177fa151732a33a (patch)
tree04fd7bf6c0f8ff4c74efedda40d75fabe85aadc5 /drivers/perf
parent4adcec1164de863ef8bcf2cdffa0ea09de2a08d3 (diff)
perf: qcom_l2_pmu: add event names
Add event names so that common events can be specified symbolically, for example: l2cache_0/total-reads/,l2cache_0/cycles/ Event names are displayed in 'perf list'. Signed-off-by: Neil Leeder <nleeder@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/perf')
-rw-r--r--drivers/perf/qcom_l2_pmu.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
index b242cce10468..4fdc8486a8e4 100644
--- a/drivers/perf/qcom_l2_pmu.c
+++ b/drivers/perf/qcom_l2_pmu.c
@@ -92,6 +92,21 @@
#define reg_idx(reg, i) (((i) * IA_L2_REG_OFFSET) + reg##_BASE)
+/*
+ * Events
+ */
+#define L2_EVENT_CYCLES 0xfe
+#define L2_EVENT_DCACHE_OPS 0x400
+#define L2_EVENT_ICACHE_OPS 0x401
+#define L2_EVENT_TLBI 0x402
+#define L2_EVENT_BARRIERS 0x403
+#define L2_EVENT_TOTAL_READS 0x405
+#define L2_EVENT_TOTAL_WRITES 0x406
+#define L2_EVENT_TOTAL_REQUESTS 0x407
+#define L2_EVENT_LDREX 0x420
+#define L2_EVENT_STREX 0x421
+#define L2_EVENT_CLREX 0x422
+
static DEFINE_RAW_SPINLOCK(l2_access_lock);
/**
@@ -700,9 +715,12 @@ static struct attribute_group l2_cache_pmu_cpumask_group = {
/* CCG format for perf RAW codes. */
PMU_FORMAT_ATTR(l2_code, "config:4-11");
PMU_FORMAT_ATTR(l2_group, "config:0-3");
+PMU_FORMAT_ATTR(event, "config:0-11");
+
static struct attribute *l2_cache_pmu_formats[] = {
&format_attr_l2_code.attr,
&format_attr_l2_group.attr,
+ &format_attr_event.attr,
NULL,
};
@@ -711,9 +729,45 @@ static struct attribute_group l2_cache_pmu_format_group = {
.attrs = l2_cache_pmu_formats,
};
+static ssize_t l2cache_pmu_event_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct perf_pmu_events_attr *pmu_attr;
+
+ pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr);
+ return sprintf(page, "event=0x%02llx\n", pmu_attr->id);
+}
+
+#define L2CACHE_EVENT_ATTR(_name, _id) \
+ (&((struct perf_pmu_events_attr[]) { \
+ { .attr = __ATTR(_name, 0444, l2cache_pmu_event_show, NULL), \
+ .id = _id, } \
+ })[0].attr.attr)
+
+static struct attribute *l2_cache_pmu_events[] = {
+ L2CACHE_EVENT_ATTR(cycles, L2_EVENT_CYCLES),
+ L2CACHE_EVENT_ATTR(dcache-ops, L2_EVENT_DCACHE_OPS),
+ L2CACHE_EVENT_ATTR(icache-ops, L2_EVENT_ICACHE_OPS),
+ L2CACHE_EVENT_ATTR(tlbi, L2_EVENT_TLBI),
+ L2CACHE_EVENT_ATTR(barriers, L2_EVENT_BARRIERS),
+ L2CACHE_EVENT_ATTR(total-reads, L2_EVENT_TOTAL_READS),
+ L2CACHE_EVENT_ATTR(total-writes, L2_EVENT_TOTAL_WRITES),
+ L2CACHE_EVENT_ATTR(total-requests, L2_EVENT_TOTAL_REQUESTS),
+ L2CACHE_EVENT_ATTR(ldrex, L2_EVENT_LDREX),
+ L2CACHE_EVENT_ATTR(strex, L2_EVENT_STREX),
+ L2CACHE_EVENT_ATTR(clrex, L2_EVENT_CLREX),
+ NULL
+};
+
+static struct attribute_group l2_cache_pmu_events_group = {
+ .name = "events",
+ .attrs = l2_cache_pmu_events,
+};
+
static const struct attribute_group *l2_cache_pmu_attr_grps[] = {
&l2_cache_pmu_format_group,
&l2_cache_pmu_cpumask_group,
+ &l2_cache_pmu_events_group,
NULL,
};