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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2024-06-25 05:18:06 +0200 |
|---|---|---|
| committer | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2024-06-25 14:49:43 +0200 |
| commit | 0d8914165dd17b0fd330538871968efabb3227c0 (patch) | |
| tree | a2f84aa78b014fcc15518c3cb90310e01382ae21 /include/trace/events/firewire_ohci.h | |
| parent | firewire: ohci: add support for Linux kernel tracepoints (diff) | |
| download | linux-0d8914165dd17b0fd330538871968efabb3227c0.tar.xz linux-0d8914165dd17b0fd330538871968efabb3227c0.zip | |
firewire: ohci: add tracepoints event for hardIRQ event
1394 OHCI hardware triggers PCI interrupts to notify any events to
software. Current driver for the hardware is programmed by the typical
way to utilize top- and bottom- halves, thus it has a timing gap to handle
the notification in softIRQ (tasklet).
This commit adds a tracepoint event for the hardIRQ event. The comparison
of the tracepoint event to tracepoints events in firewire subsystem is
helpful to diagnose the timing gap.
Link: https://lore.kernel.org/r/20240625031806.956650-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Diffstat (limited to 'include/trace/events/firewire_ohci.h')
| -rw-r--r-- | include/trace/events/firewire_ohci.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/include/trace/events/firewire_ohci.h b/include/trace/events/firewire_ohci.h index 67fa3c1c8f6d..483aeeb033af 100644 --- a/include/trace/events/firewire_ohci.h +++ b/include/trace/events/firewire_ohci.h @@ -9,7 +9,38 @@ #include <linux/tracepoint.h> -// Placeholder for future use. +TRACE_EVENT(irqs, + TP_PROTO(unsigned int card_index, u32 events), + TP_ARGS(card_index, events), + TP_STRUCT__entry( + __field(u8, card_index) + __field(u32, events) + ), + TP_fast_assign( + __entry->card_index = card_index; + __entry->events = events; + ), + TP_printk( + "card_index=%u events=%s", + __entry->card_index, + __print_flags(__entry->events, "|", + { OHCI1394_selfIDComplete, "selfIDComplete" }, + { OHCI1394_RQPkt, "RQPkt" }, + { OHCI1394_RSPkt, "RSPkt" }, + { OHCI1394_reqTxComplete, "reqTxComplete" }, + { OHCI1394_respTxComplete, "respTxComplete" }, + { OHCI1394_isochRx, "isochRx" }, + { OHCI1394_isochTx, "isochTx" }, + { OHCI1394_postedWriteErr, "postedWriteErr" }, + { OHCI1394_cycleTooLong, "cycleTooLong" }, + { OHCI1394_cycle64Seconds, "cycle64Seconds" }, + { OHCI1394_cycleInconsistent, "cycleInconsistent" }, + { OHCI1394_regAccessFail, "regAccessFail" }, + { OHCI1394_unrecoverableError, "unrecoverableError" }, + { OHCI1394_busReset, "busReset" } + ) + ) +); #endif // _FIREWIRE_OHCI_TRACE_EVENT_H |