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Message-ID: <CACPK8XeGyGdVw-KzdCXD_JAL3Qymp_hY-v4pqP9GtxjpQ7G5rw@mail.gmail.com>
Date: Mon, 21 Feb 2022 09:09:40 +0000
From: Joel Stanley <joel@....id.au>
To: Eddie James <eajames@...ux.ibm.com>
Cc: linux-fsi@...ts.ozlabs.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-aspeed <linux-aspeed@...ts.ozlabs.org>,
Jeremy Kerr <jk@...abs.org>, Ingo Molnar <mingo@...hat.com>,
Alistair Popple <alistair@...ple.id.au>,
Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] fsi: Add trace events in initialization path
On Mon, 7 Feb 2022 at 16:17, Eddie James <eajames@...ux.ibm.com> wrote:
>
> Add definitions for trace events to show the scanning flow.
>
> Signed-off-by: Eddie James <eajames@...ux.ibm.com>
Thanks Eddie. I've applied this with Steven's r-b.
> ---
> drivers/fsi/fsi-core.c | 11 ++-
> drivers/fsi/fsi-master-aspeed.c | 2 +
> include/trace/events/fsi.h | 86 ++++++++++++++++++++++++
> include/trace/events/fsi_master_aspeed.h | 12 ++++
> 4 files changed, 108 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
> index 59ddc9fd5bca..3a7b78e36701 100644
> --- a/drivers/fsi/fsi-core.c
> +++ b/drivers/fsi/fsi-core.c
> @@ -24,9 +24,6 @@
>
> #include "fsi-master.h"
>
> -#define CREATE_TRACE_POINTS
> -#include <trace/events/fsi.h>
> -
> #define FSI_SLAVE_CONF_NEXT_MASK GENMASK(31, 31)
> #define FSI_SLAVE_CONF_SLOTS_MASK GENMASK(23, 16)
> #define FSI_SLAVE_CONF_SLOTS_SHIFT 16
> @@ -95,6 +92,9 @@ struct fsi_slave {
> u8 t_echo_delay;
> };
>
> +#define CREATE_TRACE_POINTS
> +#include <trace/events/fsi.h>
> +
> #define to_fsi_master(d) container_of(d, struct fsi_master, dev)
> #define to_fsi_slave(d) container_of(d, struct fsi_slave, dev)
>
> @@ -524,6 +524,8 @@ static int fsi_slave_scan(struct fsi_slave *slave)
> dev->addr = engine_addr;
> dev->size = slots * engine_page_size;
>
> + trace_fsi_dev_init(dev);
> +
> dev_dbg(&slave->dev,
> "engine[%i]: type %x, version %x, addr %x size %x\n",
> dev->unit, dev->engine_type, version,
> @@ -1006,6 +1008,7 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
>
> crc = crc4(0, cfam_id, 32);
> if (crc) {
> + trace_fsi_slave_invalid_cfam(master, link, cfam_id);
> dev_warn(&master->dev, "slave %02x:%02x invalid cfam id CRC!\n",
> link, id);
> return -EIO;
> @@ -1080,6 +1083,8 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
> if (rc)
> goto err_free;
>
> + trace_fsi_slave_init(slave);
> +
> /* Create chardev for userspace access */
> cdev_init(&slave->cdev, &cfam_fops);
> rc = cdev_device_add(&slave->cdev, &slave->dev);
> diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
> index 0bed2fab8055..7cec1772820d 100644
> --- a/drivers/fsi/fsi-master-aspeed.c
> +++ b/drivers/fsi/fsi-master-aspeed.c
> @@ -449,11 +449,13 @@ static ssize_t cfam_reset_store(struct device *dev, struct device_attribute *att
> {
> struct fsi_master_aspeed *aspeed = dev_get_drvdata(dev);
>
> + trace_fsi_master_aspeed_cfam_reset(true);
> mutex_lock(&aspeed->lock);
> gpiod_set_value(aspeed->cfam_reset_gpio, 1);
> usleep_range(900, 1000);
> gpiod_set_value(aspeed->cfam_reset_gpio, 0);
> mutex_unlock(&aspeed->lock);
> + trace_fsi_master_aspeed_cfam_reset(false);
>
> return count;
> }
> diff --git a/include/trace/events/fsi.h b/include/trace/events/fsi.h
> index 9832cb8e0eb0..c9a72e8432b8 100644
> --- a/include/trace/events/fsi.h
> +++ b/include/trace/events/fsi.h
> @@ -122,6 +122,92 @@ TRACE_EVENT(fsi_master_break,
> )
> );
>
> +TRACE_EVENT(fsi_slave_init,
> + TP_PROTO(const struct fsi_slave *slave),
> + TP_ARGS(slave),
> + TP_STRUCT__entry(
> + __field(int, master_idx)
> + __field(int, master_n_links)
> + __field(int, idx)
> + __field(int, link)
> + __field(int, chip_id)
> + __field(__u32, cfam_id)
> + __field(__u32, size)
> + ),
> + TP_fast_assign(
> + __entry->master_idx = slave->master->idx;
> + __entry->master_n_links = slave->master->n_links;
> + __entry->idx = slave->cdev_idx;
> + __entry->link = slave->link;
> + __entry->chip_id = slave->chip_id;
> + __entry->cfam_id = slave->cfam_id;
> + __entry->size = slave->size;
> + ),
> + TP_printk("fsi%d: idx:%d link:%d/%d cid:%d cfam:%08x %08x",
> + __entry->master_idx,
> + __entry->idx,
> + __entry->link,
> + __entry->master_n_links,
> + __entry->chip_id,
> + __entry->cfam_id,
> + __entry->size
> + )
> +);
> +
> +TRACE_EVENT(fsi_slave_invalid_cfam,
> + TP_PROTO(const struct fsi_master *master, int link, uint32_t cfam_id),
> + TP_ARGS(master, link, cfam_id),
> + TP_STRUCT__entry(
> + __field(int, master_idx)
> + __field(int, master_n_links)
> + __field(int, link)
> + __field(__u32, cfam_id)
> + ),
> + TP_fast_assign(
> + __entry->master_idx = master->idx;
> + __entry->master_n_links = master->n_links;
> + __entry->link = link;
> + __entry->cfam_id = cfam_id;
> + ),
> + TP_printk("fsi%d: cfam:%08x link:%d/%d",
> + __entry->master_idx,
> + __entry->cfam_id,
> + __entry->link,
> + __entry->master_n_links
> + )
> +);
> +
> +TRACE_EVENT(fsi_dev_init,
> + TP_PROTO(const struct fsi_device *dev),
> + TP_ARGS(dev),
> + TP_STRUCT__entry(
> + __field(int, master_idx)
> + __field(int, link)
> + __field(int, type)
> + __field(int, unit)
> + __field(int, version)
> + __field(__u32, addr)
> + __field(__u32, size)
> + ),
> + TP_fast_assign(
> + __entry->master_idx = dev->slave->master->idx;
> + __entry->link = dev->slave->link;
> + __entry->type = dev->engine_type;
> + __entry->unit = dev->unit;
> + __entry->version = dev->version;
> + __entry->addr = dev->addr;
> + __entry->size = dev->size;
> + ),
> + TP_printk("fsi%d: slv%d: t:%02x u:%02x v:%02x %08x@...x",
> + __entry->master_idx,
> + __entry->link,
> + __entry->type,
> + __entry->unit,
> + __entry->version,
> + __entry->size,
> + __entry->addr
> + )
> +);
>
> #endif /* _TRACE_FSI_H */
>
> diff --git a/include/trace/events/fsi_master_aspeed.h b/include/trace/events/fsi_master_aspeed.h
> index a355ceacc33f..0fff873775f1 100644
> --- a/include/trace/events/fsi_master_aspeed.h
> +++ b/include/trace/events/fsi_master_aspeed.h
> @@ -72,6 +72,18 @@ TRACE_EVENT(fsi_master_aspeed_opb_error,
> )
> );
>
> +TRACE_EVENT(fsi_master_aspeed_cfam_reset,
> + TP_PROTO(bool start),
> + TP_ARGS(start),
> + TP_STRUCT__entry(
> + __field(bool, start)
> + ),
> + TP_fast_assign(
> + __entry->start = start;
> + ),
> + TP_printk("%s", __entry->start ? "start" : "end")
> +);
> +
> #endif
>
> #include <trace/define_trace.h>
> --
> 2.27.0
>
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