[PATCH linux dev-4.10 02/16] fsi: sbefifo: Add tracing of transfers
Eddie James
eajames at linux.vnet.ibm.com
Fri Feb 16 02:48:12 AEDT 2018
Acked-by: Eddie James <eajames at linux.vnet.ibm.com>
On 02/15/2018 06:35 AM, Andrew Jeffery wrote:
> Signed-off-by: Andrew Jeffery <andrew at aj.id.au>
> ---
> drivers/fsi/fsi-sbefifo.c | 16 ++++++++
> include/trace/events/sbefifo.h | 93 ++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 109 insertions(+)
> create mode 100644 include/trace/events/sbefifo.h
>
> diff --git a/drivers/fsi/fsi-sbefifo.c b/drivers/fsi/fsi-sbefifo.c
> index 4ac9e188e683..e15cd10bad8c 100644
> --- a/drivers/fsi/fsi-sbefifo.c
> +++ b/drivers/fsi/fsi-sbefifo.c
> @@ -33,6 +33,9 @@
> #include <linux/uaccess.h>
> #include <linux/wait.h>
>
> +#define CREATE_TRACE_POINTS
> +#include <trace/events/sbefifo.h>
> +
> /*
> * The SBEFIFO is a pipe-like FSI device for communicating with
> * the self boot engine on POWER processors.
> @@ -275,6 +278,8 @@ static struct sbefifo_xfr *sbefifo_enq_xfr(struct sbefifo_client *client)
> if (!xfr)
> return ERR_PTR(-ENOMEM);
>
> + trace_sbefifo_enq_xfer(client, xfr);
> +
> xfr->rbuf = &client->rbuf;
> xfr->wbuf = &client->wbuf;
> list_add_tail(&xfr->xfrs, &sbefifo->xfrs);
> @@ -303,6 +308,8 @@ static struct sbefifo_client *sbefifo_new_client(struct sbefifo *sbefifo)
> if (!client)
> return NULL;
>
> + trace_sbefifo_new_client(client);
> +
> kref_init(&client->kref);
> client->dev = sbefifo;
> sbefifo_buf_init(&client->rbuf);
> @@ -343,6 +350,7 @@ static void sbefifo_release_client(struct kref *kref)
> }
>
> sbefifo_put(sbefifo);
> + trace_sbefifo_release_client(client);
> kfree(client);
> }
>
> @@ -393,6 +401,8 @@ static void sbefifo_poll_timer(unsigned long data)
> if (!xfr)
> goto out_unlock;
>
> + trace_sbefifo_begin_xfer(xfr);
> +
> rbuf = xfr->rbuf;
> wbuf = xfr->wbuf;
>
> @@ -506,6 +516,8 @@ static void sbefifo_poll_timer(unsigned long data)
> }
>
> out:
> + trace_sbefifo_end_xfer(xfr, ret);
> +
> if (unlikely(ret)) {
> sbefifo->rc = ret;
> dev_err(&sbefifo->fsi_dev->dev,
> @@ -612,6 +624,10 @@ static ssize_t sbefifo_read_common(struct sbefifo_client *client,
> goto out;
> }
>
> + trace_sbefifo_deq_xfer(client, list_first_entry_or_null(&client->xfrs,
> + struct sbefifo_xfr,
> + client));
> +
> n = min_t(size_t, n, len);
>
> if (ubuf) {
> diff --git a/include/trace/events/sbefifo.h b/include/trace/events/sbefifo.h
> new file mode 100644
> index 000000000000..4755fcb23e56
> --- /dev/null
> +++ b/include/trace/events/sbefifo.h
> @@ -0,0 +1,93 @@
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM sbefifo
> +
> +#if !defined(_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
> +#define _TRACE_SBEFIFO_H
> +
> +#include <linux/tracepoint.h>
> +#include <linux/fsi-sbefifo.h>
> +
> +TRACE_EVENT(sbefifo_new_client,
> + TP_PROTO(const void *client),
> + TP_ARGS(client),
> + TP_STRUCT__entry(
> + __field(const void *, client)
> + ),
> + TP_fast_assign(
> + __entry->client = client;
> + ),
> + TP_printk("New client: %p", __entry->client)
> +);
> +
> +TRACE_EVENT(sbefifo_release_client,
> + TP_PROTO(const void *client),
> + TP_ARGS(client),
> + TP_STRUCT__entry(
> + __field(const void *, client)
> + ),
> + TP_fast_assign(
> + __entry->client = client;
> + ),
> + TP_printk("Released client: %p", __entry->client)
> +);
> +
> +TRACE_EVENT(sbefifo_enq_xfer,
> + TP_PROTO(const void *client, const void *xfer),
> + TP_ARGS(client, xfer),
> + TP_STRUCT__entry(
> + __field(const void *, client)
> + __field(const void *, xfer)
> + ),
> + TP_fast_assign(
> + __entry->client = client;
> + __entry->xfer = xfer;
> + ),
> + TP_printk("Client %p enqueued transfer %p",
> + __entry->client, __entry->xfer)
> +);
> +
> +TRACE_EVENT(sbefifo_begin_xfer,
> + TP_PROTO(const void *xfer),
> + TP_ARGS(xfer),
> + TP_STRUCT__entry(
> + __field(const void *, xfer)
> + ),
> + TP_fast_assign(
> + __entry->xfer = xfer;
> + ),
> + TP_printk("Began transfer %p",
> + __entry->xfer)
> +);
> +
> +TRACE_EVENT(sbefifo_end_xfer,
> + TP_PROTO(const void *xfer, int ret),
> + TP_ARGS(xfer, ret),
> + TP_STRUCT__entry(
> + __field(const void *, xfer)
> + __field(int, ret)
> + ),
> + TP_fast_assign(
> + __entry->xfer = xfer;
> + __entry->ret = ret;
> + ),
> + TP_printk("Completed transfer %p: %d",
> + __entry->xfer, __entry->ret)
> +);
> +
> +TRACE_EVENT(sbefifo_deq_xfer,
> + TP_PROTO(const void *client, const void *xfer),
> + TP_ARGS(client, xfer),
> + TP_STRUCT__entry(
> + __field(const void *, client)
> + __field(const void *, xfer)
> + ),
> + TP_fast_assign(
> + __entry->client = client;
> + __entry->xfer = xfer;
> + ),
> + TP_printk("Client %p dequeueing transfer %p",
> + __entry->client, __entry->xfer)
> +);
> +#endif
> +
> +#include <trace/define_trace.h>
More information about the openbmc
mailing list