Re: [PATCH v2 4/9] platform/surface: aggregator: Add trace points

Hans de Goede
2020-12-15T14:22:22Z

Hi,

On 12/3/20 10:26 PM, Maximilian Luz wrote:
> Add trace points to the Surface Aggregator subsystem core. These trace
> points can be used to track packets, requests, and allocations. They are
> further intended for debugging and testing/validation, specifically in
> combination with the error injection capabilities introduced in the
> subsequent commit.
>
> Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Regards,

Hans

> ---
>
> Changes in v1 (from RFC):
> - add copyright line
> - change SPDX identifier to GPL-2.0+ (was GPL-2.0-or-later)
> - pack tracing structs
>
> Changes in v2:
> - add compiletime check on SSAM_PTR_UID_LEN
> - fix ssam_trace_get_command_field_u8() macro
> - use dedicated trace event class for timeout reaper
> - use printk specifier for hex prefix instead of hard-coding it
> - unify comment style
> - run checkpatch --strict, fix warnings and style issues
>
> ---
> drivers/platform/surface/aggregator/Makefile | 3 +
> .../platform/surface/aggregator/controller.c | 5 +
> drivers/platform/surface/aggregator/core.c | 3 +
> .../surface/aggregator/ssh_packet_layer.c | 26 +-
> .../surface/aggregator/ssh_request_layer.c | 18 +
> drivers/platform/surface/aggregator/trace.h | 601 ++++++++++++++++++
> 6 files changed, 655 insertions(+), 1 deletion(-)
> create mode 100644 drivers/platform/surface/aggregator/trace.h
>
> diff --git a/drivers/platform/surface/aggregator/Makefile b/drivers/platform/surface/aggregator/Makefile
> index faad18d4a7f2..b8b24c8ec310 100644
> --- a/drivers/platform/surface/aggregator/Makefile
> +++ b/drivers/platform/surface/aggregator/Makefile
> @@ -1,6 +1,9 @@
> # SPDX-License-Identifier: GPL-2.0+
> # Copyright (C) 2019-2020 Maximilian Luz <luzmaximilian@gmail.com>
>
> +# For include/trace/define_trace.h to include trace.h
> +CFLAGS_core.o = -I$(src)
> +
> obj-$(CONFIG_SURFACE_AGGREGATOR) += surface_aggregator.o
>
> surface_aggregator-objs := core.o
> diff --git a/drivers/platform/surface/aggregator/controller.c b/drivers/platform/surface/aggregator/controller.c
> index 89ffd8e45787..09302bfba530 100644
> --- a/drivers/platform/surface/aggregator/controller.c
> +++ b/drivers/platform/surface/aggregator/controller.c
> @@ -31,6 +31,8 @@
> #include "ssh_msgb.h"
> #include "ssh_request_layer.h"
>
> +#include "trace.h"
> +
>
> /* -- Safe counters. -------------------------------------------------------- */
>
> @@ -569,6 +571,7 @@ static void __ssam_event_item_free_generic(struct ssam_event_item *item)
> */
> static void ssam_event_item_free(struct ssam_event_item *item)
> {
> + trace_ssam_event_item_free(item);
> item->ops.free(item);
> }
>
> @@ -604,6 +607,8 @@ static struct ssam_event_item *ssam_event_item_alloc(size_t len, gfp_t flags)
> }
>
> item->event.length = len;
> +
> + trace_ssam_event_item_alloc(item, len);
> return item;
> }
>
> diff --git a/drivers/platform/surface/aggregator/core.c b/drivers/platform/surface/aggregator/core.c
> index 1a53d7ce66a1..b5d44ab61f06 100644
> --- a/drivers/platform/surface/aggregator/core.c
> +++ b/drivers/platform/surface/aggregator/core.c
> @@ -24,6 +24,9 @@
> #include <linux/surface_aggregator/controller.h>
> #include "controller.h"
>
> +#define CREATE_TRACE_POINTS
> +#include "trace.h"
> +
>
> /* -- Static controller reference. ------------------------------------------ */
>
> diff --git a/drivers/platform/surface/aggregator/ssh_packet_layer.c b/drivers/platform/surface/aggregator/ssh_packet_layer.c
> index 8bc19837cde0..f5ec58a1faa2 100644
> --- a/drivers/platform/surface/aggregator/ssh_packet_layer.c
> +++ b/drivers/platform/surface/aggregator/ssh_packet_layer.c
> @@ -25,6 +25,8 @@
> #include "ssh_packet_layer.h"
> #include "ssh_parser.h"
>
> +#include "trace.h"
> +
> /*
> * To simplify reasoning about the code below, we define a few concepts. The
> * system below is similar to a state-machine for packets, however, there are
> @@ -227,6 +229,8 @@ static void __ssh_ptl_packet_release(struct kref *kref)
> {
> struct ssh_packet *p = container_of(kref, struct ssh_packet, refcnt);
>
> + trace_ssam_packet_release(p);
> +
> ptl_dbg_cond(p->ptl, "ptl: releasing packet %p\n", p);
> p->ops->release(p);
> }
> @@ -355,6 +359,7 @@ static int ssh_ctrl_packet_alloc(struct ssh_packet **packet,
> buffer->ptr = (u8 *)(*packet + 1);
> buffer->len = SSH_MSG_LEN_CTRL;
>
> + trace_ssam_ctrl_packet_alloc(*packet, buffer->len);
> return 0;
> }
>
> @@ -364,6 +369,7 @@ static int ssh_ctrl_packet_alloc(struct ssh_packet **packet,
> */
> static void ssh_ctrl_packet_free(struct ssh_packet *p)
> {
> + trace_ssam_ctrl_packet_free(p);
> kmem_cache_free(ssh_ctrl_packet_cache, p);
> }
>
> @@ -395,7 +401,12 @@ static void ssh_packet_next_try(struct ssh_packet *p)
> u8 base = ssh_packet_priority_get_base(p->priority);
> u8 try = ssh_packet_priority_get_try(p->priority);
>
> - p->priority = __SSH_PACKET_PRIORITY(base, try + 1);
> + /*
> + * Ensure that we write the priority in one go via WRITE_ONCE() so we
> + * can access it via READ_ONCE() for tracing. Note that other access
> + * is guarded by the queue lock, so no need to use READ_ONCE() there.
> + */
> + WRITE_ONCE(p->priority, __SSH_PACKET_PRIORITY(base, try + 1));
> }
>
> /* Must be called with queue lock held. */
> @@ -553,6 +564,7 @@ static void __ssh_ptl_complete(struct ssh_packet *p, int status)
> {
> struct ssh_ptl *ptl = READ_ONCE(p->ptl);
>
> + trace_ssam_packet_complete(p, status);
> ptl_dbg_cond(ptl, "ptl: completing packet %p (status: %d)\n", p, status);
>
> if (p->ops->complete)
> @@ -1007,6 +1019,8 @@ int ssh_ptl_submit(struct ssh_ptl *ptl, struct ssh_packet *p)
> struct ssh_ptl *ptl_old;
> int status;
>
> + trace_ssam_packet_submit(p);
> +
> /* Validate packet fields. */
> if (test_bit(SSH_PACKET_TY_FLUSH_BIT, &p->state)) {
> if (p->data.ptr || test_bit(SSH_PACKET_TY_SEQUENCED_BIT, &p->state))
> @@ -1056,6 +1070,8 @@ static int __ssh_ptl_resubmit(struct ssh_packet *packet)
> int status;
> u8 try;
>
> + trace_ssam_packet_resubmit(packet);
> +
> spin_lock(&packet->ptl->queue.lock);
>
> /* Check if the packet is out of tries. */
> @@ -1139,6 +1155,8 @@ void ssh_ptl_cancel(struct ssh_packet *p)
> if (test_and_set_bit(SSH_PACKET_SF_CANCELED_BIT, &p->state))
> return;
>
> + trace_ssam_packet_cancel(p);
> +
> /*
> * Lock packet and commit with memory barrier. If this packet has
> * already been locked, it's going to be removed and completed by
> @@ -1191,6 +1209,8 @@ static void ssh_ptl_timeout_reap(struct work_struct *work)
> bool resub = false;
> int status;
>
> + trace_ssam_ptl_timeout_reap(atomic_read(&ptl->pending.count));
> +
> /*
> * Mark reaper as "not pending". This is done before checking any
> * packets to avoid lost-update type problems.
> @@ -1213,6 +1233,8 @@ static void ssh_ptl_timeout_reap(struct work_struct *work)
> continue;
> }
>
> + trace_ssam_packet_timeout(p);
> +
> status = __ssh_ptl_resubmit(p);
>
> /*
> @@ -1405,6 +1427,8 @@ static size_t ssh_ptl_rx_eval(struct ssh_ptl *ptl, struct ssam_span *source)
> if (!frame) /* Not enough data. */
> return aligned.ptr - source->ptr;
>
> + trace_ssam_rx_frame_received(frame);
> +
> switch (frame->type) {
> case SSH_FRAME_TYPE_ACK:
> ssh_ptl_acknowledge(ptl, frame->seq);
> diff --git a/drivers/platform/surface/aggregator/ssh_request_layer.c b/drivers/platform/surface/aggregator/ssh_request_layer.c
> index 80bea8e781d3..e91d2ed4c173 100644
> --- a/drivers/platform/surface/aggregator/ssh_request_layer.c
> +++ b/drivers/platform/surface/aggregator/ssh_request_layer.c
> @@ -22,6 +22,8 @@
> #include "ssh_packet_layer.h"
> #include "ssh_request_layer.h"
>
> +#include "trace.h"
> +
> /*
> * SSH_RTL_REQUEST_TIMEOUT - Request timeout.
> *
> @@ -144,6 +146,8 @@ static void ssh_rtl_complete_with_status(struct ssh_request *rqst, int status)
> {
> struct ssh_rtl *rtl = ssh_request_rtl(rqst);
>
> + trace_ssam_request_complete(rqst, status);
> +
> /* rtl/ptl may not be set if we're canceling before submitting. */
> rtl_dbg_cond(rtl, "rtl: completing request (rqid: %#06x, status: %d)\n",
> ssh_request_get_rqid_safe(rqst), status);
> @@ -157,6 +161,8 @@ static void ssh_rtl_complete_with_rsp(struct ssh_request *rqst,
> {
> struct ssh_rtl *rtl = ssh_request_rtl(rqst);
>
> + trace_ssam_request_complete(rqst, 0);
> +
> rtl_dbg(rtl, "rtl: completing request with response (rqid: %#06x)\n",
> ssh_request_get_rqid(rqst));
>
> @@ -329,6 +335,8 @@ static void ssh_rtl_tx_work_fn(struct work_struct *work)
> */
> int ssh_rtl_submit(struct ssh_rtl *rtl, struct ssh_request *rqst)
> {
> + trace_ssam_request_submit(rqst);
> +
> /*
> * Ensure that requests expecting a response are sequenced. If this
> * invariant ever changes, see the comment in ssh_rtl_complete() on what
> @@ -439,6 +447,8 @@ static void ssh_rtl_complete(struct ssh_rtl *rtl,
> struct ssh_request *p, *n;
> u16 rqid = get_unaligned_le16(&command->rqid);
>
> + trace_ssam_rx_response_received(command, command_data->len);
> +
> /*
> * Get request from pending based on request ID and mark it as response
> * received and locked.
> @@ -688,6 +698,8 @@ bool ssh_rtl_cancel(struct ssh_request *rqst, bool pending)
> if (test_and_set_bit(SSH_REQUEST_SF_CANCELED_BIT, &rqst->state))
> return true;
>
> + trace_ssam_request_cancel(rqst);
> +
> if (pending)
> canceled = ssh_rtl_cancel_pending(rqst);
> else
> @@ -779,6 +791,8 @@ static void ssh_rtl_timeout_reap(struct work_struct *work)
> ktime_t timeout = rtl->rtx_timeout.timeout;
> ktime_t next = KTIME_MAX;
>
> + trace_ssam_rtl_timeout_reap(atomic_read(&rtl->pending.count));
> +
> /*
> * Mark reaper as "not pending". This is done before checking any
> * requests to avoid lost-update type problems.
> @@ -822,6 +836,8 @@ static void ssh_rtl_timeout_reap(struct work_struct *work)
>
> /* Cancel and complete the request. */
> list_for_each_entry_safe(r, n, &claimed, node) {
> + trace_ssam_request_timeout(r);
> +
> /*
> * At this point we've removed the packet from pending. This
> * means that we've obtained the last (only) reference of the
> @@ -849,6 +865,8 @@ static void ssh_rtl_timeout_reap(struct work_struct *work)
> static void ssh_rtl_rx_event(struct ssh_rtl *rtl, const struct ssh_command *cmd,
> const struct ssam_span *data)
> {
> + trace_ssam_rx_event_received(cmd, data->len);
> +
> rtl_dbg(rtl, "rtl: handling event (rqid: %#06x)\n",
> get_unaligned_le16(&cmd->rqid));
>
> diff --git a/drivers/platform/surface/aggregator/trace.h b/drivers/platform/surface/aggregator/trace.h
> new file mode 100644
> index 000000000000..dcca8007d876
> --- /dev/null
> +++ b/drivers/platform/surface/aggregator/trace.h
> @@ -0,0 +1,601 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Trace points for SSAM/SSH.
> + *
> + * Copyright (C) 2020 Maximilian Luz <luzmaximilian@gmail.com>
> + */
> +
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM surface_aggregator
> +
> +#if !defined(_SURFACE_AGGREGATOR_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
> +#define _SURFACE_AGGREGATOR_TRACE_H
> +
> +#include <linux/surface_aggregator/serial_hub.h>
> +
> +#include <asm/unaligned.h>
> +#include <linux/tracepoint.h>
> +
> +TRACE_DEFINE_ENUM(SSH_FRAME_TYPE_DATA_SEQ);
> +TRACE_DEFINE_ENUM(SSH_FRAME_TYPE_DATA_NSQ);
> +TRACE_DEFINE_ENUM(SSH_FRAME_TYPE_ACK);
> +TRACE_DEFINE_ENUM(SSH_FRAME_TYPE_NAK);
> +
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_LOCKED_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_QUEUED_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_PENDING_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_TRANSMITTING_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_TRANSMITTED_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_ACKED_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_CANCELED_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_SF_COMPLETED_BIT);
> +
> +TRACE_DEFINE_ENUM(SSH_PACKET_TY_FLUSH_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_TY_SEQUENCED_BIT);
> +TRACE_DEFINE_ENUM(SSH_PACKET_TY_BLOCKING_BIT);
> +
> +TRACE_DEFINE_ENUM(SSH_PACKET_FLAGS_SF_MASK);
> +TRACE_DEFINE_ENUM(SSH_PACKET_FLAGS_TY_MASK);
> +
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_LOCKED_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_QUEUED_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_PENDING_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_TRANSMITTING_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_TRANSMITTED_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_RSPRCVD_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_CANCELED_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_SF_COMPLETED_BIT);
> +
> +TRACE_DEFINE_ENUM(SSH_REQUEST_TY_FLUSH_BIT);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_TY_HAS_RESPONSE_BIT);
> +
> +TRACE_DEFINE_ENUM(SSH_REQUEST_FLAGS_SF_MASK);
> +TRACE_DEFINE_ENUM(SSH_REQUEST_FLAGS_TY_MASK);
> +
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_SAM);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_BAT);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_TMP);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_PMC);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_FAN);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_PoM);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_DBG);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_KBD);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_FWU);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_UNI);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_LPC);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_TCL);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_SFL);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_KIP);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_EXT);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_BLD);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_BAS);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_SEN);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_SRQ);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_MCU);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_HID);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_TCH);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_BKL);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_TAM);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_ACC);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_UFI);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_USC);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_PEN);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_VID);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_AUD);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_SMC);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_KPD);
> +TRACE_DEFINE_ENUM(SSAM_SSH_TC_REG);
> +
> +#define SSAM_PTR_UID_LEN 9
> +#define SSAM_U8_FIELD_NOT_APPLICABLE ((u16)-1)
> +#define SSAM_SEQ_NOT_APPLICABLE ((u16)-1)
> +#define SSAM_RQID_NOT_APPLICABLE ((u32)-1)
> +#define SSAM_SSH_TC_NOT_APPLICABLE 0
> +
> +#ifndef _SURFACE_AGGREGATOR_TRACE_HELPERS
> +#define _SURFACE_AGGREGATOR_TRACE_HELPERS
> +
> +/**
> + * ssam_trace_ptr_uid() - Convert the pointer to a non-pointer UID string.
> + * @ptr: The pointer to convert.
> + * @uid_str: A buffer of length SSAM_PTR_UID_LEN where the UID will be stored.
> + *
> + * Converts the given pointer into a UID string that is safe to be shared
> + * with userspace and logs, i.e. doesn't give away the real memory location.
> + */
> +static inline void ssam_trace_ptr_uid(const void *ptr, char *uid_str)
> +{
> + char buf[2 * sizeof(void *) + 1];
> +
> + BUILD_BUG_ON(ARRAY_SIZE(buf) < SSAM_PTR_UID_LEN);
> +
> + snprintf(buf, ARRAY_SIZE(buf), "%p", ptr);
> + memcpy(uid_str, &buf[ARRAY_SIZE(buf) - SSAM_PTR_UID_LEN],
> + SSAM_PTR_UID_LEN);
> +}
> +
> +/**
> + * ssam_trace_get_packet_seq() - Read the packet's sequence ID.
> + * @p: The packet.
> + *
> + * Return: Returns the packet's sequence ID (SEQ) field if present, or
> + * %SSAM_SEQ_NOT_APPLICABLE if not (e.g. flush packet).
> + */
> +static inline u16 ssam_trace_get_packet_seq(const struct ssh_packet *p)
> +{
> + if (!p->data.ptr || p->data.len < SSH_MESSAGE_LENGTH(0))
> + return SSAM_SEQ_NOT_APPLICABLE;
> +
> + return p->data.ptr[SSH_MSGOFFSET_FRAME(seq)];
> +}
> +
> +/**
> + * ssam_trace_get_request_id() - Read the packet's request ID.
> + * @p: The packet.
> + *
> + * Return: Returns the packet's request ID (RQID) field if the packet
> + * represents a request with command data, or %SSAM_RQID_NOT_APPLICABLE if not
> + * (e.g. flush request, control packet).
> + */
> +static inline u32 ssam_trace_get_request_id(const struct ssh_packet *p)
> +{
> + if (!p->data.ptr || p->data.len < SSH_COMMAND_MESSAGE_LENGTH(0))
> + return SSAM_RQID_NOT_APPLICABLE;
> +
> + return get_unaligned_le16(&p->data.ptr[SSH_MSGOFFSET_COMMAND(rqid)]);
> +}
> +
> +/**
> + * ssam_trace_get_request_tc() - Read the packet's request target category.
> + * @p: The packet.
> + *
> + * Return: Returns the packet's request target category (TC) field if the
> + * packet represents a request with command data, or %SSAM_TC_NOT_APPLICABLE
> + * if not (e.g. flush request, control packet).
> + */
> +static inline u32 ssam_trace_get_request_tc(const struct ssh_packet *p)
> +{
> + if (!p->data.ptr || p->data.len < SSH_COMMAND_MESSAGE_LENGTH(0))
> + return SSAM_SSH_TC_NOT_APPLICABLE;
> +
> + return get_unaligned_le16(&p->data.ptr[SSH_MSGOFFSET_COMMAND(tc)]);
> +}
> +
> +#endif /* _SURFACE_AGGREGATOR_TRACE_HELPERS */
> +
> +#define ssam_trace_get_command_field_u8(packet, field) \
> + ((!(packet) || (packet)->data.len < SSH_COMMAND_MESSAGE_LENGTH(0)) \
> + ? 0 : (packet)->data.ptr[SSH_MSGOFFSET_COMMAND(field)])
> +
> +#define ssam_show_generic_u8_field(value) \
> + __print_symbolic(value, \
> + { SSAM_U8_FIELD_NOT_APPLICABLE, "N/A" } \
> + )
> +
> +#define ssam_show_frame_type(ty) \
> + __print_symbolic(ty, \
> + { SSH_FRAME_TYPE_DATA_SEQ, "DSEQ" }, \
> + { SSH_FRAME_TYPE_DATA_NSQ, "DNSQ" }, \
> + { SSH_FRAME_TYPE_ACK, "ACK" }, \
> + { SSH_FRAME_TYPE_NAK, "NAK" } \
> + )
> +
> +#define ssam_show_packet_type(type) \
> + __print_flags(flags & SSH_PACKET_FLAGS_TY_MASK, "", \
> + { BIT(SSH_PACKET_TY_FLUSH_BIT), "F" }, \
> + { BIT(SSH_PACKET_TY_SEQUENCED_BIT), "S" }, \
> + { BIT(SSH_PACKET_TY_BLOCKING_BIT), "B" } \
> + )
> +
> +#define ssam_show_packet_state(state) \
> + __print_flags(flags & SSH_PACKET_FLAGS_SF_MASK, "", \
> + { BIT(SSH_PACKET_SF_LOCKED_BIT), "L" }, \
> + { BIT(SSH_PACKET_SF_QUEUED_BIT), "Q" }, \
> + { BIT(SSH_PACKET_SF_PENDING_BIT), "P" }, \
> + { BIT(SSH_PACKET_SF_TRANSMITTING_BIT), "S" }, \
> + { BIT(SSH_PACKET_SF_TRANSMITTED_BIT), "T" }, \
> + { BIT(SSH_PACKET_SF_ACKED_BIT), "A" }, \
> + { BIT(SSH_PACKET_SF_CANCELED_BIT), "C" }, \
> + { BIT(SSH_PACKET_SF_COMPLETED_BIT), "F" } \
> + )
> +
> +#define ssam_show_packet_seq(seq) \
> + __print_symbolic(seq, \
> + { SSAM_SEQ_NOT_APPLICABLE, "N/A" } \
> + )
> +
> +#define ssam_show_request_type(flags) \
> + __print_flags((flags) & SSH_REQUEST_FLAGS_TY_MASK, "", \
> + { BIT(SSH_REQUEST_TY_FLUSH_BIT), "F" }, \
> + { BIT(SSH_REQUEST_TY_HAS_RESPONSE_BIT), "R" } \
> + )
> +
> +#define ssam_show_request_state(flags) \
> + __print_flags((flags) & SSH_REQUEST_FLAGS_SF_MASK, "", \
> + { BIT(SSH_REQUEST_SF_LOCKED_BIT), "L" }, \
> + { BIT(SSH_REQUEST_SF_QUEUED_BIT), "Q" }, \
> + { BIT(SSH_REQUEST_SF_PENDING_BIT), "P" }, \
> + { BIT(SSH_REQUEST_SF_TRANSMITTING_BIT), "S" }, \
> + { BIT(SSH_REQUEST_SF_TRANSMITTED_BIT), "T" }, \
> + { BIT(SSH_REQUEST_SF_RSPRCVD_BIT), "A" }, \
> + { BIT(SSH_REQUEST_SF_CANCELED_BIT), "C" }, \
> + { BIT(SSH_REQUEST_SF_COMPLETED_BIT), "F" } \
> + )
> +
> +#define ssam_show_request_id(rqid) \
> + __print_symbolic(rqid, \
> + { SSAM_RQID_NOT_APPLICABLE, "N/A" } \
> + )
> +
> +#define ssam_show_ssh_tc(rqid) \
> + __print_symbolic(rqid, \
> + { SSAM_SSH_TC_NOT_APPLICABLE, "N/A" }, \
> + { SSAM_SSH_TC_SAM, "SAM" }, \
> + { SSAM_SSH_TC_BAT, "BAT" }, \
> + { SSAM_SSH_TC_TMP, "TMP" }, \
> + { SSAM_SSH_TC_PMC, "PMC" }, \
> + { SSAM_SSH_TC_FAN, "FAN" }, \
> + { SSAM_SSH_TC_PoM, "PoM" }, \
> + { SSAM_SSH_TC_DBG, "DBG" }, \
> + { SSAM_SSH_TC_KBD, "KBD" }, \
> + { SSAM_SSH_TC_FWU, "FWU" }, \
> + { SSAM_SSH_TC_UNI, "UNI" }, \
> + { SSAM_SSH_TC_LPC, "LPC" }, \
> + { SSAM_SSH_TC_TCL, "TCL" }, \
> + { SSAM_SSH_TC_SFL, "SFL" }, \
> + { SSAM_SSH_TC_KIP, "KIP" }, \
> + { SSAM_SSH_TC_EXT, "EXT" }, \
> + { SSAM_SSH_TC_BLD, "BLD" }, \
> + { SSAM_SSH_TC_BAS, "BAS" }, \
> + { SSAM_SSH_TC_SEN, "SEN" }, \
> + { SSAM_SSH_TC_SRQ, "SRQ" }, \
> + { SSAM_SSH_TC_MCU, "MCU" }, \
> + { SSAM_SSH_TC_HID, "HID" }, \
> + { SSAM_SSH_TC_TCH, "TCH" }, \
> + { SSAM_SSH_TC_BKL, "BKL" }, \
> + { SSAM_SSH_TC_TAM, "TAM" }, \
> + { SSAM_SSH_TC_ACC, "ACC" }, \
> + { SSAM_SSH_TC_UFI, "UFI" }, \
> + { SSAM_SSH_TC_USC, "USC" }, \
> + { SSAM_SSH_TC_PEN, "PEN" }, \
> + { SSAM_SSH_TC_VID, "VID" }, \
> + { SSAM_SSH_TC_AUD, "AUD" }, \
> + { SSAM_SSH_TC_SMC, "SMC" }, \
> + { SSAM_SSH_TC_KPD, "KPD" }, \
> + { SSAM_SSH_TC_REG, "REG" } \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_frame_class,
> + TP_PROTO(const struct ssh_frame *frame),
> +
> + TP_ARGS(frame),
> +
> + TP_STRUCT__entry(
> + __field(u8, type)
> + __field(u8, seq)
> + __field(u16, len)
> + ),
> +
> + TP_fast_assign(
> + __entry->type = frame->type;
> + __entry->seq = frame->seq;
> + __entry->len = get_unaligned_le16(&frame->len);
> + ),
> +
> + TP_printk("ty=%s, seq=%#04x, len=%u",
> + ssam_show_frame_type(__entry->type),
> + __entry->seq,
> + __entry->len
> + )
> +);
> +
> +#define DEFINE_SSAM_FRAME_EVENT(name) \
> + DEFINE_EVENT(ssam_frame_class, ssam_##name, \
> + TP_PROTO(const struct ssh_frame *frame), \
> + TP_ARGS(frame) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_command_class,
> + TP_PROTO(const struct ssh_command *cmd, u16 len),
> +
> + TP_ARGS(cmd, len),
> +
> + TP_STRUCT__entry(
> + __field(u16, rqid)
> + __field(u16, len)
> + __field(u8, tc)
> + __field(u8, cid)
> + __field(u8, iid)
> + ),
> +
> + TP_fast_assign(
> + __entry->rqid = get_unaligned_le16(&cmd->rqid);
> + __entry->tc = cmd->tc;
> + __entry->cid = cmd->cid;
> + __entry->iid = cmd->iid;
> + __entry->len = len;
> + ),
> +
> + TP_printk("rqid=%#06x, tc=%s, cid=%#04x, iid=%#04x, len=%u",
> + __entry->rqid,
> + ssam_show_ssh_tc(__entry->tc),
> + __entry->cid,
> + __entry->iid,
> + __entry->len
> + )
> +);
> +
> +#define DEFINE_SSAM_COMMAND_EVENT(name) \
> + DEFINE_EVENT(ssam_command_class, ssam_##name, \
> + TP_PROTO(const struct ssh_command *cmd, u16 len), \
> + TP_ARGS(cmd, len) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_packet_class,
> + TP_PROTO(const struct ssh_packet *packet),
> +
> + TP_ARGS(packet),
> +
> + TP_STRUCT__entry(
> + __field(unsigned long, state)
> + __array(char, uid, SSAM_PTR_UID_LEN)
> + __field(u8, priority)
> + __field(u16, length)
> + __field(u16, seq)
> + ),
> +
> + TP_fast_assign(
> + __entry->state = READ_ONCE(packet->state);
> + ssam_trace_ptr_uid(packet, __entry->uid);
> + __entry->priority = READ_ONCE(packet->priority);
> + __entry->length = packet->data.len;
> + __entry->seq = ssam_trace_get_packet_seq(packet);
> + ),
> +
> + TP_printk("uid=%s, seq=%s, ty=%s, pri=%#04x, len=%u, sta=%s",
> + __entry->uid,
> + ssam_show_packet_seq(__entry->seq),
> + ssam_show_packet_type(__entry->state),
> + __entry->priority,
> + __entry->length,
> + ssam_show_packet_state(__entry->state)
> + )
> +);
> +
> +#define DEFINE_SSAM_PACKET_EVENT(name) \
> + DEFINE_EVENT(ssam_packet_class, ssam_##name, \
> + TP_PROTO(const struct ssh_packet *packet), \
> + TP_ARGS(packet) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_packet_status_class,
> + TP_PROTO(const struct ssh_packet *packet, int status),
> +
> + TP_ARGS(packet, status),
> +
> + TP_STRUCT__entry(
> + __field(unsigned long, state)
> + __field(int, status)
> + __array(char, uid, SSAM_PTR_UID_LEN)
> + __field(u8, priority)
> + __field(u16, length)
> + __field(u16, seq)
> + ),
> +
> + TP_fast_assign(
> + __entry->state = READ_ONCE(packet->state);
> + __entry->status = status;
> + ssam_trace_ptr_uid(packet, __entry->uid);
> + __entry->priority = READ_ONCE(packet->priority);
> + __entry->length = packet->data.len;
> + __entry->seq = ssam_trace_get_packet_seq(packet);
> + ),
> +
> + TP_printk("uid=%s, seq=%s, ty=%s, pri=%#04x, len=%u, sta=%s, status=%d",
> + __entry->uid,
> + ssam_show_packet_seq(__entry->seq),
> + ssam_show_packet_type(__entry->state),
> + __entry->priority,
> + __entry->length,
> + ssam_show_packet_state(__entry->state),
> + __entry->status
> + )
> +);
> +
> +#define DEFINE_SSAM_PACKET_STATUS_EVENT(name) \
> + DEFINE_EVENT(ssam_packet_status_class, ssam_##name, \
> + TP_PROTO(const struct ssh_packet *packet, int status), \
> + TP_ARGS(packet, status) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_request_class,
> + TP_PROTO(const struct ssh_request *request),
> +
> + TP_ARGS(request),
> +
> + TP_STRUCT__entry(
> + __field(unsigned long, state)
> + __field(u32, rqid)
> + __array(char, uid, SSAM_PTR_UID_LEN)
> + __field(u8, tc)
> + __field(u16, cid)
> + __field(u16, iid)
> + ),
> +
> + TP_fast_assign(
> + const struct ssh_packet *p = &request->packet;
> +
> + /* Use packet for UID so we can match requests to packets. */
> + __entry->state = READ_ONCE(request->state);
> + __entry->rqid = ssam_trace_get_request_id(p);
> + ssam_trace_ptr_uid(p, __entry->uid);
> + __entry->tc = ssam_trace_get_request_tc(p);
> + __entry->cid = ssam_trace_get_command_field_u8(p, cid);
> + __entry->iid = ssam_trace_get_command_field_u8(p, iid);
> + ),
> +
> + TP_printk("uid=%s, rqid=%s, ty=%s, sta=%s, tc=%s, cid=%s, iid=%s",
> + __entry->uid,
> + ssam_show_request_id(__entry->rqid),
> + ssam_show_request_type(__entry->state),
> + ssam_show_request_state(__entry->state),
> + ssam_show_ssh_tc(__entry->tc),
> + ssam_show_generic_u8_field(__entry->cid),
> + ssam_show_generic_u8_field(__entry->iid)
> + )
> +);
> +
> +#define DEFINE_SSAM_REQUEST_EVENT(name) \
> + DEFINE_EVENT(ssam_request_class, ssam_##name, \
> + TP_PROTO(const struct ssh_request *request), \
> + TP_ARGS(request) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_request_status_class,
> + TP_PROTO(const struct ssh_request *request, int status),
> +
> + TP_ARGS(request, status),
> +
> + TP_STRUCT__entry(
> + __field(unsigned long, state)
> + __field(u32, rqid)
> + __field(int, status)
> + __array(char, uid, SSAM_PTR_UID_LEN)
> + __field(u8, tc)
> + __field(u16, cid)
> + __field(u16, iid)
> + ),
> +
> + TP_fast_assign(
> + const struct ssh_packet *p = &request->packet;
> +
> + /* Use packet for UID so we can match requests to packets. */
> + __entry->state = READ_ONCE(request->state);
> + __entry->rqid = ssam_trace_get_request_id(p);
> + __entry->status = status;
> + ssam_trace_ptr_uid(p, __entry->uid);
> + __entry->tc = ssam_trace_get_request_tc(p);
> + __entry->cid = ssam_trace_get_command_field_u8(p, cid);
> + __entry->iid = ssam_trace_get_command_field_u8(p, iid);
> + ),
> +
> + TP_printk("uid=%s, rqid=%s, ty=%s, sta=%s, tc=%s, cid=%s, iid=%s, status=%d",
> + __entry->uid,
> + ssam_show_request_id(__entry->rqid),
> + ssam_show_request_type(__entry->state),
> + ssam_show_request_state(__entry->state),
> + ssam_show_ssh_tc(__entry->tc),
> + ssam_show_generic_u8_field(__entry->cid),
> + ssam_show_generic_u8_field(__entry->iid),
> + __entry->status
> + )
> +);
> +
> +#define DEFINE_SSAM_REQUEST_STATUS_EVENT(name) \
> + DEFINE_EVENT(ssam_request_status_class, ssam_##name, \
> + TP_PROTO(const struct ssh_request *request, int status),\
> + TP_ARGS(request, status) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_alloc_class,
> + TP_PROTO(void *ptr, size_t len),
> +
> + TP_ARGS(ptr, len),
> +
> + TP_STRUCT__entry(
> + __field(size_t, len)
> + __array(char, uid, SSAM_PTR_UID_LEN)
> + ),
> +
> + TP_fast_assign(
> + __entry->len = len;
> + ssam_trace_ptr_uid(ptr, __entry->uid);
> + ),
> +
> + TP_printk("uid=%s, len=%zu", __entry->uid, __entry->len)
> +);
> +
> +#define DEFINE_SSAM_ALLOC_EVENT(name) \
> + DEFINE_EVENT(ssam_alloc_class, ssam_##name, \
> + TP_PROTO(void *ptr, size_t len), \
> + TP_ARGS(ptr, len) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_free_class,
> + TP_PROTO(void *ptr),
> +
> + TP_ARGS(ptr),
> +
> + TP_STRUCT__entry(
> + __array(char, uid, SSAM_PTR_UID_LEN)
> + ),
> +
> + TP_fast_assign(
> + ssam_trace_ptr_uid(ptr, __entry->uid);
> + ),
> +
> + TP_printk("uid=%s", __entry->uid)
> +);
> +
> +#define DEFINE_SSAM_FREE_EVENT(name) \
> + DEFINE_EVENT(ssam_free_class, ssam_##name, \
> + TP_PROTO(void *ptr), \
> + TP_ARGS(ptr) \
> + )
> +
> +DECLARE_EVENT_CLASS(ssam_pending_class,
> + TP_PROTO(unsigned int pending),
> +
> + TP_ARGS(pending),
> +
> + TP_STRUCT__entry(
> + __field(unsigned int, pending)
> + ),
> +
> + TP_fast_assign(
> + __entry->pending = pending;
> + ),
> +
> + TP_printk("pending=%u", __entry->pending)
> +);
> +
> +#define DEFINE_SSAM_PENDING_EVENT(name) \
> + DEFINE_EVENT(ssam_pending_class, ssam_##name, \
> + TP_PROTO(unsigned int pending), \
> + TP_ARGS(pending) \
> + )
> +
> +DEFINE_SSAM_FRAME_EVENT(rx_frame_received);
> +DEFINE_SSAM_COMMAND_EVENT(rx_response_received);
> +DEFINE_SSAM_COMMAND_EVENT(rx_event_received);
> +
> +DEFINE_SSAM_PACKET_EVENT(packet_release);
> +DEFINE_SSAM_PACKET_EVENT(packet_submit);
> +DEFINE_SSAM_PACKET_EVENT(packet_resubmit);
> +DEFINE_SSAM_PACKET_EVENT(packet_timeout);
> +DEFINE_SSAM_PACKET_EVENT(packet_cancel);
> +DEFINE_SSAM_PACKET_STATUS_EVENT(packet_complete);
> +DEFINE_SSAM_PENDING_EVENT(ptl_timeout_reap);
> +
> +DEFINE_SSAM_REQUEST_EVENT(request_submit);
> +DEFINE_SSAM_REQUEST_EVENT(request_timeout);
> +DEFINE_SSAM_REQUEST_EVENT(request_cancel);
> +DEFINE_SSAM_REQUEST_STATUS_EVENT(request_complete);
> +DEFINE_SSAM_PENDING_EVENT(rtl_timeout_reap);
> +
> +DEFINE_SSAM_ALLOC_EVENT(ctrl_packet_alloc);
> +DEFINE_SSAM_FREE_EVENT(ctrl_packet_free);
> +
> +DEFINE_SSAM_ALLOC_EVENT(event_item_alloc);
> +DEFINE_SSAM_FREE_EVENT(event_item_free);
> +
> +#endif /* _SURFACE_AGGREGATOR_TRACE_H */
> +
> +/* This part must be outside protection */
> +#undef TRACE_INCLUDE_PATH
> +#undef TRACE_INCLUDE_FILE
> +
> +#define TRACE_INCLUDE_PATH .
> +#define TRACE_INCLUDE_FILE trace
> +
> +#include <trace/define_trace.h>
> --
> 2.29.2
>