Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Takashi Sakamoto <o-takashi@sakamocchi.jp>
+115
+10
drivers/firewire/core-iso.c
+10
drivers/firewire/core-iso.c
···
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#include "core.h"
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#include <trace/events/firewire.h>
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/*
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* Isochronous DMA context management
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*/
···
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ctx->callback.sc = callback;
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ctx->callback_data = callback_data;
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trace_isoc_outbound_allocate(ctx, channel, speed);
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trace_isoc_inbound_single_allocate(ctx, channel, header_size);
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trace_isoc_inbound_multiple_allocate(ctx);
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return ctx;
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}
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EXPORT_SYMBOL(fw_iso_context_create);
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void fw_iso_context_destroy(struct fw_iso_context *ctx)
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{
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trace_isoc_outbound_destroy(ctx);
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trace_isoc_inbound_single_destroy(ctx);
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trace_isoc_inbound_multiple_destroy(ctx);
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ctx->card->driver->free_iso_context(ctx);
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}
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EXPORT_SYMBOL(fw_iso_context_destroy);
+105
include/trace/events/firewire.h
+105
include/trace/events/firewire.h
···
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#undef PHY_PACKET_SELF_ID_GET_POWER_CLASS
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#undef PHY_PACKET_SELF_ID_GET_INITIATED_RESET
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TRACE_EVENT_CONDITION(isoc_outbound_allocate,
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TP_PROTO(const struct fw_iso_context *ctx, unsigned int channel, unsigned int scode),
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TP_ARGS(ctx, channel, scode),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT),
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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(u8, channel)
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__field(u8, scode)
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),
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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->channel = channel;
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__entry->scode = scode;
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),
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TP_printk(
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"context=0x%llx card_index=%u channel=%u scode=%u",
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__entry->context,
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__entry->card_index,
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__entry->channel,
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__entry->scode
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)
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);
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+
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TRACE_EVENT_CONDITION(isoc_inbound_single_allocate,
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TP_PROTO(const struct fw_iso_context *ctx, unsigned int channel, unsigned int header_size),
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TP_ARGS(ctx, channel, header_size),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE),
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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(u8, channel)
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__field(u8, header_size)
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),
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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->channel = channel;
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__entry->header_size = header_size;
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),
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TP_printk(
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"context=0x%llx card_index=%u channel=%u header_size=%u",
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__entry->context,
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__entry->card_index,
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__entry->channel,
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__entry->header_size
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)
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);
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TRACE_EVENT_CONDITION(isoc_inbound_multiple_allocate,
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TP_PROTO(const struct fw_iso_context *ctx),
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TP_ARGS(ctx),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL),
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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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),
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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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),
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TP_printk(
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"context=0x%llx card_index=%u",
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__entry->context,
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__entry->card_index
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)
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);
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+
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DECLARE_EVENT_CLASS(isoc_destroy_template,
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TP_PROTO(const struct fw_iso_context *ctx),
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TP_ARGS(ctx),
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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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),
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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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),
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TP_printk(
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"context=0x%llx card_index=%u",
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__entry->context,
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__entry->card_index
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)
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)
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DEFINE_EVENT_CONDITION(isoc_destroy_template, isoc_outbound_destroy,
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TP_PROTO(const struct fw_iso_context *ctx),
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TP_ARGS(ctx),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT)
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);
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DEFINE_EVENT_CONDITION(isoc_destroy_template, isoc_inbound_single_destroy,
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TP_PROTO(const struct fw_iso_context *ctx),
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TP_ARGS(ctx),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE)
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);
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DEFINE_EVENT_CONDITION(isoc_destroy_template, isoc_inbound_multiple_destroy,
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TP_PROTO(const struct fw_iso_context *ctx),
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TP_ARGS(ctx),
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TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)
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);
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#undef QUADLET_SIZE
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#endif // _FIREWIRE_TRACE_EVENT_H