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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
firewire: core: add tracepoints events for queueing packets of isochronous context
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>
+83
+4
drivers/firewire/core-iso.c
+4
drivers/firewire/core-iso.c
···
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struct fw_iso_buffer *buffer,
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unsigned long payload)
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{
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+
trace_isoc_outbound_queue(ctx, payload, packet);
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trace_isoc_inbound_single_queue(ctx, payload, packet);
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trace_isoc_inbound_multiple_queue(ctx, payload, packet);
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+
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return ctx->card->driver->queue_iso(ctx, packet, buffer, payload);
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}
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EXPORT_SYMBOL(fw_iso_context_queue);
+79
include/trace/events/firewire.h
+79
include/trace/events/firewire.h
···
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)
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);
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+
#define TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet) \
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TP_STRUCT__entry( \
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__field(u64, context) \
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__field(u8, card_index) \
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__field(u32, buffer_offset) \
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__field(bool, interrupt) \
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__field(bool, skip) \
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__field(u8, sy) \
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__field(u8, tag) \
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__dynamic_array(u32, header, packet->header_length / QUADLET_SIZE) \
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)
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+
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#define TP_fast_assign_iso_packet(ctx, buffer_offset, packet) \
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TP_fast_assign( \
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__entry->context = (uintptr_t)ctx; \
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__entry->card_index = ctx->card->index; \
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__entry->buffer_offset = buffer_offset; \
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__entry->interrupt = packet->interrupt; \
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__entry->skip = packet->skip; \
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__entry->sy = packet->sy; \
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__entry->tag = packet->tag; \
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memcpy(__get_dynamic_array(header), packet->header, \
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__get_dynamic_array_len(header)); \
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)
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+
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TRACE_EVENT_CONDITION(isoc_outbound_queue,
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TP_PROTO(const struct fw_iso_context *ctx, unsigned long buffer_offset, const struct fw_iso_packet *packet),
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TP_ARGS(ctx, buffer_offset, packet),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT),
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TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet),
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TP_fast_assign_iso_packet(ctx, buffer_offset, packet),
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TP_printk(
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"context=0x%llx card_index=%u buffer_offset=0x%x interrupt=%s skip=%s sy=%d tag=%u header=%s",
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__entry->context,
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+
__entry->card_index,
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+
__entry->buffer_offset,
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__entry->interrupt ? "true" : "false",
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__entry->skip ? "true" : "false",
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+
__entry->sy,
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__entry->tag,
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__print_array(__get_dynamic_array(header),
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__get_dynamic_array_len(header) / QUADLET_SIZE, QUADLET_SIZE)
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)
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);
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+
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TRACE_EVENT_CONDITION(isoc_inbound_single_queue,
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TP_PROTO(const struct fw_iso_context *ctx, unsigned long buffer_offset, const struct fw_iso_packet *packet),
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TP_ARGS(ctx, buffer_offset, packet),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE),
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TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet),
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TP_fast_assign_iso_packet(ctx, buffer_offset, packet),
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TP_printk(
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"context=0x%llx card_index=%u buffer_offset=0x%x interrupt=%s skip=%s",
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__entry->context,
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+
__entry->card_index,
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+
__entry->buffer_offset,
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__entry->interrupt ? "true" : "false",
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__entry->skip ? "true" : "false"
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)
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);
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+
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TRACE_EVENT_CONDITION(isoc_inbound_multiple_queue,
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TP_PROTO(const struct fw_iso_context *ctx, unsigned long buffer_offset, const struct fw_iso_packet *packet),
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+
TP_ARGS(ctx, buffer_offset, packet),
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+
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL),
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+
TP_STRUCT__entry_iso_packet(ctx, buffer_offset, packet),
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+
TP_fast_assign_iso_packet(ctx, buffer_offset, packet),
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+
TP_printk(
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+
"context=0x%llx card_index=%u buffer_offset=0x%x interrupt=%s",
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+
__entry->context,
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+
__entry->card_index,
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+
__entry->buffer_offset,
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__entry->interrupt ? "true" : "false"
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+
)
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+
);
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+
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#undef TP_STRUCT__entry_iso_packet
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#undef TP_fast_assign_iso_packet
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+
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#undef QUADLET_SIZE
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#endif // _FIREWIRE_TRACE_EVENT_H