@@ -123,6 +123,28 @@ SPI_STATISTICS_SHOW(bytes, "%llu");
SPI_STATISTICS_SHOW(bytes_rx, "%llu");
SPI_STATISTICS_SHOW(bytes_tx, "%llu");
+#define SPI_STATISTICS_TRANSFER_BYTES_HISTO(index, number) \
+ SPI_STATISTICS_SHOW_NAME(transfer_bytes_histo##index, \
+ "transfer_bytes_histo_" number, \
+ transfer_bytes_histo[index], "%lu")
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(0, "0-1");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(1, "2-3");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(2, "4-7");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(3, "8-15");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(4, "16-31");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(5, "32-63");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(6, "64-127");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(7, "128-255");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(8, "256-511");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(9, "512-1023");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(10, "1024-2047");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(11, "2048-4095");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(12, "4096-8191");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(13, "8192-16383");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(14, "16384-32767");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(15, "32768-65535");
+SPI_STATISTICS_TRANSFER_BYTES_HISTO(16, "65536+");
+
static struct attribute *spi_dev_attrs[] = {
&dev_attr_modalias.attr,
NULL,
@@ -143,6 +165,23 @@ static struct attribute *spi_device_statistics_attrs[] = {
&dev_attr_spi_device_bytes.attr,
&dev_attr_spi_device_bytes_rx.attr,
&dev_attr_spi_device_bytes_tx.attr,
+ &dev_attr_spi_device_transfer_bytes_histo0.attr,
+ &dev_attr_spi_device_transfer_bytes_histo1.attr,
+ &dev_attr_spi_device_transfer_bytes_histo2.attr,
+ &dev_attr_spi_device_transfer_bytes_histo3.attr,
+ &dev_attr_spi_device_transfer_bytes_histo4.attr,
+ &dev_attr_spi_device_transfer_bytes_histo5.attr,
+ &dev_attr_spi_device_transfer_bytes_histo6.attr,
+ &dev_attr_spi_device_transfer_bytes_histo7.attr,
+ &dev_attr_spi_device_transfer_bytes_histo8.attr,
+ &dev_attr_spi_device_transfer_bytes_histo9.attr,
+ &dev_attr_spi_device_transfer_bytes_histo10.attr,
+ &dev_attr_spi_device_transfer_bytes_histo11.attr,
+ &dev_attr_spi_device_transfer_bytes_histo12.attr,
+ &dev_attr_spi_device_transfer_bytes_histo13.attr,
+ &dev_attr_spi_device_transfer_bytes_histo14.attr,
+ &dev_attr_spi_device_transfer_bytes_histo15.attr,
+ &dev_attr_spi_device_transfer_bytes_histo16.attr,
NULL,
};
@@ -168,6 +207,23 @@ static struct attribute *spi_master_statistics_attrs[] = {
&dev_attr_spi_master_bytes.attr,
&dev_attr_spi_master_bytes_rx.attr,
&dev_attr_spi_master_bytes_tx.attr,
+ &dev_attr_spi_master_transfer_bytes_histo0.attr,
+ &dev_attr_spi_master_transfer_bytes_histo1.attr,
+ &dev_attr_spi_master_transfer_bytes_histo2.attr,
+ &dev_attr_spi_master_transfer_bytes_histo3.attr,
+ &dev_attr_spi_master_transfer_bytes_histo4.attr,
+ &dev_attr_spi_master_transfer_bytes_histo5.attr,
+ &dev_attr_spi_master_transfer_bytes_histo6.attr,
+ &dev_attr_spi_master_transfer_bytes_histo7.attr,
+ &dev_attr_spi_master_transfer_bytes_histo8.attr,
+ &dev_attr_spi_master_transfer_bytes_histo9.attr,
+ &dev_attr_spi_master_transfer_bytes_histo10.attr,
+ &dev_attr_spi_master_transfer_bytes_histo11.attr,
+ &dev_attr_spi_master_transfer_bytes_histo12.attr,
+ &dev_attr_spi_master_transfer_bytes_histo13.attr,
+ &dev_attr_spi_master_transfer_bytes_histo14.attr,
+ &dev_attr_spi_master_transfer_bytes_histo15.attr,
+ &dev_attr_spi_master_transfer_bytes_histo16.attr,
NULL,
};
@@ -186,10 +242,15 @@ void spi_statistics_add_transfer_stats(struct spi_statistics *stats,
struct spi_master *master)
{
unsigned long flags;
+ int l2len = min(fls(xfer->len), SPI_STATISTICS_HISTO_SIZE) - 1;
+
+ if (l2len < 0)
+ l2len = 0;
spin_lock_irqsave(&stats->lock, flags);
stats->transfers++;
+ stats->transfer_bytes_histo[l2len]++;
stats->bytes += xfer->len;
if ((xfer->tx_buf) &&
@@ -51,6 +51,8 @@ extern struct bus_type spi_bus_type;
* @bytes_tx: number of bytes sent to device
* @bytes_rx: number of bytes received from device
*
+ * @transfer_bytes_histo:
+ * transfer bytes histogramm
*/
struct spi_statistics {
spinlock_t lock; /* lock for the whole structure */
@@ -68,6 +70,8 @@ struct spi_statistics {
unsigned long long bytes_rx;
unsigned long long bytes_tx;
+#define SPI_STATISTICS_HISTO_SIZE 17
+ unsigned long transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE];
};
void spi_statistics_add_transfer_stats(struct spi_statistics *stats,