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| Started by | Neil Leeder <nleeder@codeaurora.org> |
|---|---|
| First post | 2017-09-14 21:40 +0200 |
| Last post | 2017-09-25 17:10 +0200 |
| Articles | 2 — 2 participants |
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[PATCH] perf: qcom_l2_pmu: add event names Neil Leeder <nleeder@codeaurora.org> - 2017-09-14 21:40 +0200
Re: [PATCH] perf: qcom_l2_pmu: add event names Will Deacon <will.deacon@arm.com> - 2017-09-25 17:10 +0200
| From | Neil Leeder <nleeder@codeaurora.org> |
|---|---|
| Date | 2017-09-14 21:40 +0200 |
| Subject | [PATCH] perf: qcom_l2_pmu: add event names |
| Message-ID | <upI9s-JY-11@gated-at.bofh.it> |
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>
---
drivers/perf/qcom_l2_pmu.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
index b242cce..4fdc848 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 ssize_t l2_cache_pmu_cpumask_show(struct device *dev,
/* 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 ssize_t l2_cache_pmu_cpumask_show(struct device *dev,
.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,
};
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.
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| From | Will Deacon <will.deacon@arm.com> |
|---|---|
| Date | 2017-09-25 17:10 +0200 |
| Message-ID | <utDbb-82e-1@gated-at.bofh.it> |
| In reply to | #1732533 |
On Thu, Sep 14, 2017 at 03:30:13PM -0400, Neil Leeder wrote:
> 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>
> ---
> drivers/perf/qcom_l2_pmu.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
>
> diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
> index b242cce..4fdc848 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 ssize_t l2_cache_pmu_cpumask_show(struct device *dev,
> /* 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 ssize_t l2_cache_pmu_cpumask_show(struct device *dev,
> .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);
Nit: do you want a 0x%03llx here?
(I'm happy to take the patch either way, so just let me know)
Will
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