Commit 25e6e00d authored by Takashi Sakamoto's avatar Takashi Sakamoto
Browse files

firewire: core: add tracepoints events for allocation/deallocation of isochronous context 

It is helpful to trace the allocation and dealocation of isochronous
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/20240623220859.851685-2-o-takashi@sakamocchi.jp


Signed-off-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
parent ae24ba76

drivers/firewire/core-iso.c

+10 −0
Original line number Diff line number Diff line
@@ -22,6 +22,8 @@ 


#include "core.h"



#include <trace/events/firewire.h>



/*

 * Isochronous DMA context management

 */
@@ -148,12 +150,20 @@ struct fw_iso_context *fw_iso_context_create(struct fw_card *card, 
	ctx->callback.sc = callback;

	ctx->callback_data = callback_data;



	trace_isoc_outbound_allocate(ctx, channel, speed);

	trace_isoc_inbound_single_allocate(ctx, channel, header_size);

	trace_isoc_inbound_multiple_allocate(ctx);



	return ctx;

}

EXPORT_SYMBOL(fw_iso_context_create);



void fw_iso_context_destroy(struct fw_iso_context *ctx)

{

	trace_isoc_outbound_destroy(ctx);

	trace_isoc_inbound_single_destroy(ctx);

	trace_isoc_inbound_multiple_destroy(ctx);



	ctx->card->driver->free_iso_context(ctx);

}

EXPORT_SYMBOL(fw_iso_context_destroy);

include/trace/events/firewire.h

+105 −0
Original line number Diff line number Diff line
@@ -436,6 +436,111 @@ TRACE_EVENT(self_id_sequence, 
#undef PHY_PACKET_SELF_ID_GET_POWER_CLASS

#undef PHY_PACKET_SELF_ID_GET_INITIATED_RESET



TRACE_EVENT_CONDITION(isoc_outbound_allocate,

	TP_PROTO(const struct fw_iso_context *ctx, unsigned int channel, unsigned int scode),

	TP_ARGS(ctx, channel, scode),

	TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT),

	TP_STRUCT__entry(

		__field(u64, context)

		__field(u8, card_index)

		__field(u8, channel)

		__field(u8, scode)

	),

	TP_fast_assign(

		__entry->context = (uintptr_t)ctx;

		__entry->card_index = ctx->card->index;

		__entry->channel = channel;

		__entry->scode = scode;

	),

	TP_printk(

		"context=0x%llx card_index=%u channel=%u scode=%u",

		__entry->context,

		__entry->card_index,

		__entry->channel,

		__entry->scode

	)

);



TRACE_EVENT_CONDITION(isoc_inbound_single_allocate,

	TP_PROTO(const struct fw_iso_context *ctx, unsigned int channel, unsigned int header_size),

	TP_ARGS(ctx, channel, header_size),

	TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE),

	TP_STRUCT__entry(

		__field(u64, context)

		__field(u8, card_index)

		__field(u8, channel)

		__field(u8, header_size)

	),

	TP_fast_assign(

		__entry->context = (uintptr_t)ctx;

		__entry->card_index = ctx->card->index;

		__entry->channel = channel;

		__entry->header_size = header_size;

	),

	TP_printk(

		"context=0x%llx card_index=%u channel=%u header_size=%u",

		__entry->context,

		__entry->card_index,

		__entry->channel,

		__entry->header_size

	)

);



TRACE_EVENT_CONDITION(isoc_inbound_multiple_allocate,

	TP_PROTO(const struct fw_iso_context *ctx),

	TP_ARGS(ctx),

	TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL),

	TP_STRUCT__entry(

		__field(u64, context)

		__field(u8, card_index)

	),

	TP_fast_assign(

		__entry->context = (uintptr_t)ctx;

		__entry->card_index = ctx->card->index;

	),

	TP_printk(

		"context=0x%llx card_index=%u",

		__entry->context,

		__entry->card_index

	)

);



DECLARE_EVENT_CLASS(isoc_destroy_template,

	TP_PROTO(const struct fw_iso_context *ctx),

	TP_ARGS(ctx),

	TP_STRUCT__entry(

		__field(u64, context)

		__field(u8, card_index)

	),

	TP_fast_assign(

		__entry->context = (uintptr_t)ctx;

		__entry->card_index = ctx->card->index;

	),

	TP_printk(

		"context=0x%llx card_index=%u",

		__entry->context,

		__entry->card_index

	)

)



DEFINE_EVENT_CONDITION(isoc_destroy_template, isoc_outbound_destroy,

	TP_PROTO(const struct fw_iso_context *ctx),

	TP_ARGS(ctx),

	TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT)

);



DEFINE_EVENT_CONDITION(isoc_destroy_template, isoc_inbound_single_destroy,

	TP_PROTO(const struct fw_iso_context *ctx),

	TP_ARGS(ctx),

	TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE)

);



DEFINE_EVENT_CONDITION(isoc_destroy_template, isoc_inbound_multiple_destroy,

	TP_PROTO(const struct fw_iso_context *ctx),

	TP_ARGS(ctx),

	TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)

);



#undef QUADLET_SIZE



#endif // _FIREWIRE_TRACE_EVENT_H