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MLK-18338-2 perf: ddr: added axid filter support 

perf stat -a -e ddr0/axid-read,axi_id=MMMMDDDD/ cmd

MMMM AXI_MASKING
DDDD AXI_ID

Signed-off-by: Frank Li <Frank.Li@nxp.com>
pull/10/head
Frank Li 2018-05-17 12:26:48 -05:00 committed by Jason Liu
parent 54616f4830
commit adfc7cffbb
1 changed files with 40 additions and 5 deletions
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45
drivers/perf/ddr-perf.c
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@ -21,6 +21,8 @@
#define COUNTER_CNTL 0x0
#define COUNTER_READ 0x20
#define COUNTER_DPCR1 0x30
#define CNTL_OVER 0x1
#define CNTL_CLEAR 0x2
#define CNTL_EN 0x4
@ -80,6 +82,26 @@ PMU_EVENT_ATTR_STRING(refresh, ddr_perf_refresh, "event=0x37");
PMU_EVENT_ATTR_STRING(write, ddr_perf_write, "event=0x38");
PMU_EVENT_ATTR_STRING(raw-hazard, ddr_perf_raw_hazard, "event=0x39");
PMU_EVENT_ATTR_STRING(axid-read, ddr_perf_axid_read, "event=0x41");
PMU_EVENT_ATTR_STRING(axid-write, ddr_perf_axid_write, "event=0x42");
#define DDR_CAP_AXI_ID 0x1
struct fsl_ddr_devtype_data {
unsigned int flags;
};
static const struct fsl_ddr_devtype_data imx8_data;
static const struct fsl_ddr_devtype_data imx8m_data = {
.flags = DDR_CAP_AXI_ID,
};
static const struct of_device_id imx_ddr_pmu_dt_ids[] = {
{ .compatible = "fsl,imx8-ddr-pmu", .data = (void*)&imx8_data},
{ .compatible = "fsl,imx8m-ddr-pmu", .data = (void*)&imx8m_data},
{ /* sentinel */ }
};
struct ddr_pmu {
struct pmu pmu;
void __iomem *base;
@ -89,6 +111,7 @@ struct ddr_pmu {
struct perf_event *active_events[NUM_COUNTER];
int total_events;
bool cycles_active;
struct fsl_ddr_devtype_data *devtype;
};
static ssize_t ddr_perf_cpumask_show(struct device *dev,
@ -142,6 +165,8 @@ static struct attribute *ddr_perf_events_attrs[] = {
&ddr_perf_refresh.attr.attr,
&ddr_perf_write.attr.attr,
&ddr_perf_raw_hazard.attr.attr,
&ddr_perf_axid_read.attr.attr,
&ddr_perf_axid_write.attr.attr,
NULL,
};
@ -151,8 +176,11 @@ static struct attribute_group ddr_perf_events_attr_group = {
};
PMU_FORMAT_ATTR(event, "config:0-63");
PMU_FORMAT_ATTR(axi_id, "config1:0-63");
static struct attribute *ddr_perf_format_attrs[] = {
&format_attr_event.attr,
&format_attr_axi_id.attr,
NULL,
};
@ -276,6 +304,14 @@ static void ddr_perf_event_start(struct perf_event *event, int flags)
struct hw_perf_event *hwc = &event->hw;
int counter = hwc->idx;
if (pmu->devtype->flags & DDR_CAP_AXI_ID) {
if (event->attr.config == 0x41 ||
event->attr.config == 0x42) {
int val = event->attr.config1;
writel(val, pmu->base + COUNTER_DPCR1);
}
}
local64_set(&hwc->prev_count, 0);
ddr_perf_event_enable(pmu, event->attr.config, counter, true);
@ -413,6 +449,8 @@ static int ddr_perf_probe(struct platform_device *pdev)
int num;
int ret;
u32 irq;
const struct of_device_id *of_id =
of_match_device(imx_ddr_pmu_dt_ids, &pdev->dev);
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, iomem);
@ -430,6 +468,8 @@ static int ddr_perf_probe(struct platform_device *pdev)
num = ddr_perf_init(pmu, base, &pdev->dev);
name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "ddr%d", num);
pmu->devtype = (struct fsl_ddr_devtype_data *)of_id->data;
cpumask_set_cpu(smp_processor_id(), &pmu->cpu);
ret = perf_pmu_register(&(pmu->pmu), name, -1);
if (ret)
@ -473,11 +513,6 @@ static int ddr_perf_remove(struct platform_device *pdev)
return 0;
}
static const struct of_device_id imx_ddr_pmu_dt_ids[] = {
{ .compatible = "fsl,imx8-ddr-pmu", },
{ /* sentinel */ }
};
static struct platform_driver imx_ddr_pmu_driver = {
.driver = {
.name = "imx-ddr-pmu",