Re: [PATCH 0/2] firewire: ohci: add support for tracepoints events
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From: Takashi S. <o-t...@sa...> - 2024-06-27 13:21:44
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On Tue, Jun 25, 2024 at 12:18:04PM +0900, Takashi Sakamoto wrote: > Hi, > > 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). The Linux Kernel Tracepoints > framework is enough useful to trace the interaction between 1394 OHCI > hardware and its driver. > > This series of changes adds support for tracepoints events to the > driver, and adds an event, 'irqs', so that comparison of the event and > any event in firewire subsystem is helpful to diagnose the timing gap. > > Takashi Sakamoto (2): > firewire: ohci: add support for Linux kernel tracepoints > firewire: ohci: add tracepoints event for hardIRQ event > > drivers/firewire/ohci.c | 4 +++ > include/trace/events/firewire.h | 1 + > include/trace/events/firewire_ohci.h | 47 ++++++++++++++++++++++++++++ > 3 files changed, 52 insertions(+) > create mode 100644 include/trace/events/firewire_ohci.h Applied to for-next branch. Regards Takashi Sakamoto |