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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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ed86bf8ef3
Large transfers (64kB) doesn't show up in the trace. Not sure why, but since printk can only display buffers up to 64 bytes in length, we only need to store the first 64 bytes. Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Mark Brown <broonie@kernel.org>
182 lines
4.3 KiB
C
182 lines
4.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM spi
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#if !defined(_TRACE_SPI_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_SPI_H
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#include <linux/ktime.h>
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#include <linux/tracepoint.h>
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DECLARE_EVENT_CLASS(spi_controller,
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TP_PROTO(struct spi_controller *controller),
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TP_ARGS(controller),
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TP_STRUCT__entry(
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__field( int, bus_num )
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),
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TP_fast_assign(
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__entry->bus_num = controller->bus_num;
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),
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TP_printk("spi%d", (int)__entry->bus_num)
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);
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DEFINE_EVENT(spi_controller, spi_controller_idle,
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TP_PROTO(struct spi_controller *controller),
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TP_ARGS(controller)
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);
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DEFINE_EVENT(spi_controller, spi_controller_busy,
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TP_PROTO(struct spi_controller *controller),
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TP_ARGS(controller)
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);
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DECLARE_EVENT_CLASS(spi_message,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg),
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TP_STRUCT__entry(
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__field( int, bus_num )
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__field( int, chip_select )
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__field( struct spi_message *, msg )
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),
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TP_fast_assign(
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__entry->bus_num = msg->spi->controller->bus_num;
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__entry->chip_select = msg->spi->chip_select;
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__entry->msg = msg;
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),
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TP_printk("spi%d.%d %p", (int)__entry->bus_num,
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(int)__entry->chip_select,
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(struct spi_message *)__entry->msg)
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);
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DEFINE_EVENT(spi_message, spi_message_submit,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg)
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);
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DEFINE_EVENT(spi_message, spi_message_start,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg)
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);
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TRACE_EVENT(spi_message_done,
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TP_PROTO(struct spi_message *msg),
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TP_ARGS(msg),
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TP_STRUCT__entry(
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__field( int, bus_num )
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__field( int, chip_select )
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__field( struct spi_message *, msg )
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__field( unsigned, frame )
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__field( unsigned, actual )
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),
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TP_fast_assign(
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__entry->bus_num = msg->spi->controller->bus_num;
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__entry->chip_select = msg->spi->chip_select;
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__entry->msg = msg;
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__entry->frame = msg->frame_length;
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__entry->actual = msg->actual_length;
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),
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TP_printk("spi%d.%d %p len=%u/%u", (int)__entry->bus_num,
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(int)__entry->chip_select,
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(struct spi_message *)__entry->msg,
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(unsigned)__entry->actual, (unsigned)__entry->frame)
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);
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/*
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* consider a buffer valid if non-NULL and if it doesn't match the dummy buffer
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* that only exist to work with controllers that have SPI_CONTROLLER_MUST_TX or
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* SPI_CONTROLLER_MUST_RX.
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*/
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#define spi_valid_txbuf(msg, xfer) \
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(xfer->tx_buf && xfer->tx_buf != msg->spi->controller->dummy_tx)
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#define spi_valid_rxbuf(msg, xfer) \
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(xfer->rx_buf && xfer->rx_buf != msg->spi->controller->dummy_rx)
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DECLARE_EVENT_CLASS(spi_transfer,
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TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
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TP_ARGS(msg, xfer),
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TP_STRUCT__entry(
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__field( int, bus_num )
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__field( int, chip_select )
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__field( struct spi_transfer *, xfer )
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__field( int, len )
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__dynamic_array(u8, rx_buf,
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spi_valid_rxbuf(msg, xfer) ?
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(xfer->len < 64 ? xfer->len : 64) : 0)
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__dynamic_array(u8, tx_buf,
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spi_valid_txbuf(msg, xfer) ?
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(xfer->len < 64 ? xfer->len : 64) : 0)
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),
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TP_fast_assign(
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__entry->bus_num = msg->spi->controller->bus_num;
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__entry->chip_select = msg->spi->chip_select;
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__entry->xfer = xfer;
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__entry->len = xfer->len;
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if (spi_valid_txbuf(msg, xfer))
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memcpy(__get_dynamic_array(tx_buf),
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xfer->tx_buf, __get_dynamic_array_len(tx_buf));
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if (spi_valid_rxbuf(msg, xfer))
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memcpy(__get_dynamic_array(rx_buf),
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xfer->rx_buf, __get_dynamic_array_len(rx_buf));
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),
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TP_printk("spi%d.%d %p len=%d tx=[%*phD] rx=[%*phD]",
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__entry->bus_num, __entry->chip_select,
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__entry->xfer, __entry->len,
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__get_dynamic_array_len(tx_buf), __get_dynamic_array(tx_buf),
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__get_dynamic_array_len(rx_buf), __get_dynamic_array(rx_buf))
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);
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DEFINE_EVENT(spi_transfer, spi_transfer_start,
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TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
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TP_ARGS(msg, xfer)
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);
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DEFINE_EVENT(spi_transfer, spi_transfer_stop,
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TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer),
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TP_ARGS(msg, xfer)
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);
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#endif /* _TRACE_POWER_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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