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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>
This commit is contained in:
Neil Leeder 2017-09-14 15:30:13 -04:00 committed by Will Deacon
parent 4adcec1164
commit b65423ed46
1 changed files with 54 additions and 0 deletions
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54
drivers/perf/qcom_l2_pmu.c
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@ -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,
};