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firewire: core: add tracepoints events for queueing packets of isochronous context

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It is helpful to trace the queueing packets of isochronous context when
the core function is requested them by both in-kernel unit drivers and
userspace applications.

This commit adds some tracepoints events for the aim.

Link: https://lore.kernel.org/r/20240623220859.851685-7-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
This commit is contained in:
Takashi Sakamoto 2024-06-24 07:08:57 +09:00
parent 8320b63e02
commit 1f3c0d794d
2 changed files with 83 additions and 0 deletions
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4
drivers/firewire/core-iso.c
View File

@ -191,6 +191,10 @@ int fw_iso_context_queue(struct fw_iso_context *ctx,
struct fw_iso_buffer *buffer,
unsigned long payload)
{
trace_isoc_outbound_queue(ctx, payload, packet);
trace_isoc_inbound_single_queue(ctx, payload, packet);
trace_isoc_inbound_multiple_queue(ctx, payload, packet);
return ctx->card->driver->queue_iso(ctx, packet, buffer, payload);
}
EXPORT_SYMBOL(fw_iso_context_queue);

79
include/trace/events/firewire.h
View File

@ -742,6 +742,85 @@ DEFINE_EVENT_CONDITION(isoc_flush_completions_template, isoc_inbound_multiple_fl
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)
);
#define TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet) \
TP_STRUCT__entry( \
__field(u64, context) \
__field(u8, card_index) \
__field(u32, buffer_offset) \
__field(bool, interrupt) \
__field(bool, skip) \
__field(u8, sy) \
__field(u8, tag) \
__dynamic_array(u32, header, packet->header_length / QUADLET_SIZE) \
)
#define TP_fast_assign_iso_packet(ctx, buffer_offset, packet) \
TP_fast_assign( \
__entry->context = (uintptr_t)ctx; \
__entry->card_index = ctx->card->index; \
__entry->buffer_offset = buffer_offset; \
__entry->interrupt = packet->interrupt; \
__entry->skip = packet->skip; \
__entry->sy = packet->sy; \
__entry->tag = packet->tag; \
memcpy(__get_dynamic_array(header), packet->header, \
__get_dynamic_array_len(header)); \
)
TRACE_EVENT_CONDITION(isoc_outbound_queue,
TP_PROTO(const struct fw_iso_context *ctx, unsigned long buffer_offset, const struct fw_iso_packet *packet),
TP_ARGS(ctx, buffer_offset, packet),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT),
TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet),
TP_fast_assign_iso_packet(ctx, buffer_offset, packet),
TP_printk(
"context=0x%llx card_index=%u buffer_offset=0x%x interrupt=%s skip=%s sy=%d tag=%u header=%s",
__entry->context,
__entry->card_index,
__entry->buffer_offset,
__entry->interrupt ? "true" : "false",
__entry->skip ? "true" : "false",
__entry->sy,
__entry->tag,
__print_array(__get_dynamic_array(header),
__get_dynamic_array_len(header) / QUADLET_SIZE, QUADLET_SIZE)
)
);
TRACE_EVENT_CONDITION(isoc_inbound_single_queue,
TP_PROTO(const struct fw_iso_context *ctx, unsigned long buffer_offset, const struct fw_iso_packet *packet),
TP_ARGS(ctx, buffer_offset, packet),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE),
TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet),
TP_fast_assign_iso_packet(ctx, buffer_offset, packet),
TP_printk(
"context=0x%llx card_index=%u buffer_offset=0x%x interrupt=%s skip=%s",
__entry->context,
__entry->card_index,
__entry->buffer_offset,
__entry->interrupt ? "true" : "false",
__entry->skip ? "true" : "false"
)
);
TRACE_EVENT_CONDITION(isoc_inbound_multiple_queue,
TP_PROTO(const struct fw_iso_context *ctx, unsigned long buffer_offset, const struct fw_iso_packet *packet),
TP_ARGS(ctx, buffer_offset, packet),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL),
TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet),
TP_fast_assign_iso_packet(ctx, buffer_offset, packet),
TP_printk(
"context=0x%llx card_index=%u buffer_offset=0x%x interrupt=%s",
__entry->context,
__entry->card_index,
__entry->buffer_offset,
__entry->interrupt ? "true" : "false"
)
);
#undef TP_STRUCT__entry_iso_packet
#undef TP_fast_assign_iso_packet
#undef QUADLET_SIZE
#endif // _FIREWIRE_TRACE_EVENT_H