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

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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: Takashi Sakamoto <o-takashi@sakamocchi.jp>
This commit is contained in:
Takashi Sakamoto 2024-06-24 07:08:52 +09:00
parent ae24ba769b
commit 25e6e00d3f
2 changed files with 115 additions and 0 deletions
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10
drivers/firewire/core-iso.c
View File

@ -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);

105
include/trace/events/firewire.h
View File

@ -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