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firewire: core: add tracepoints events for starting/stopping of isochronous context

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It is helpful to trace the starting and stopping 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/20240623220859.851685-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
This commit is contained in:
Takashi Sakamoto 2024-06-24 07:08:54 +09:00
parent 9f16ac725b
commit 4e64210f67
2 changed files with 116 additions and 0 deletions
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8
drivers/firewire/core-iso.c
View File

@ -171,6 +171,10 @@ EXPORT_SYMBOL(fw_iso_context_destroy);
int fw_iso_context_start(struct fw_iso_context *ctx,
int cycle, int sync, int tags)
{
trace_isoc_outbound_start(ctx, cycle);
trace_isoc_inbound_single_start(ctx, cycle, sync, tags);
trace_isoc_inbound_multiple_start(ctx, cycle, sync, tags);
return ctx->card->driver->start_iso(ctx, cycle, sync, tags);
}
EXPORT_SYMBOL(fw_iso_context_start);
@ -205,6 +209,10 @@ EXPORT_SYMBOL(fw_iso_context_flush_completions);
int fw_iso_context_stop(struct fw_iso_context *ctx)
{
trace_isoc_outbound_stop(ctx);
trace_isoc_inbound_single_stop(ctx);
trace_isoc_inbound_multiple_stop(ctx);
return ctx->card->driver->stop_iso(ctx);
}
EXPORT_SYMBOL(fw_iso_context_stop);

108
include/trace/events/firewire.h
View File

@ -562,6 +562,114 @@ TRACE_EVENT(isoc_inbound_multiple_channels,
)
);
TRACE_EVENT_CONDITION(isoc_outbound_start,
TP_PROTO(const struct fw_iso_context *ctx, int cycle_match),
TP_ARGS(ctx, cycle_match),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT),
TP_STRUCT__entry(
__field(u64, context)
__field(u8, card_index)
__field(bool, cycle_match)
__field(u16, cycle)
),
TP_fast_assign(
__entry->context = (uintptr_t)ctx;
__entry->card_index = ctx->card->index;
__entry->cycle_match = cycle_match < 0 ? false : true;
__entry->cycle = __entry->cycle_match ? (u16)cycle_match : 0;
),
TP_printk(
"context=0x%llx card_index=%u cycle_match=%s cycle=0x%04x",
__entry->context,
__entry->card_index,
__entry->cycle_match ? "true" : "false",
__entry->cycle
)
);
DECLARE_EVENT_CLASS(isoc_inbound_start_template,
TP_PROTO(const struct fw_iso_context *ctx, int cycle_match, unsigned int sync, unsigned int tags),
TP_ARGS(ctx, cycle_match, sync, tags),
TP_STRUCT__entry(
__field(u64, context)
__field(u8, card_index)
__field(bool, cycle_match)
__field(u16, cycle)
__field(u8, sync)
__field(u8, tags)
),
TP_fast_assign(
__entry->context = (uintptr_t)ctx;
__entry->card_index = ctx->card->index;
__entry->cycle_match = cycle_match < 0 ? false : true;
__entry->cycle = __entry->cycle_match ? (u16)cycle_match : 0;
__entry->sync = sync;
__entry->tags = tags;
),
TP_printk(
"context=0x%llx card_index=%u cycle_match=%s cycle=0x%04x sync=%u tags=%s",
__entry->context,
__entry->card_index,
__entry->cycle_match ? "true" : "false",
__entry->cycle,
__entry->sync,
__print_flags(__entry->tags, "|",
{ FW_ISO_CONTEXT_MATCH_TAG0, "0" },
{ FW_ISO_CONTEXT_MATCH_TAG1, "1" },
{ FW_ISO_CONTEXT_MATCH_TAG2, "2" },
{ FW_ISO_CONTEXT_MATCH_TAG3, "3" }
)
)
);
DEFINE_EVENT_CONDITION(isoc_inbound_start_template, isoc_inbound_single_start,
TP_PROTO(const struct fw_iso_context *ctx, int cycle_match, unsigned int sync, unsigned int tags),
TP_ARGS(ctx, cycle_match, sync, tags),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE)
);
DEFINE_EVENT_CONDITION(isoc_inbound_start_template, isoc_inbound_multiple_start,
TP_PROTO(const struct fw_iso_context *ctx, int cycle_match, unsigned int sync, unsigned int tags),
TP_ARGS(ctx, cycle_match, sync, tags),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)
);
DECLARE_EVENT_CLASS(isoc_stop_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_stop_template, isoc_outbound_stop,
TP_PROTO(const struct fw_iso_context *ctx),
TP_ARGS(ctx),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT)
);
DEFINE_EVENT_CONDITION(isoc_stop_template, isoc_inbound_single_stop,
TP_PROTO(const struct fw_iso_context *ctx),
TP_ARGS(ctx),
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE)
);
DEFINE_EVENT_CONDITION(isoc_stop_template, isoc_inbound_multiple_stop,
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