IRC log for #elinux on 20160122

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10:10.44*** topic/#elinux is http://eLinux.org/ || Ask anything; it may take 24+ hours to get a response. Mailing lists -> http://elinux.org/ELinuxWiki:Mailing_List ; Logs available at ibot.rikers.org
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20:48.25*** join/#elinux aandrew (foobar@gromit.mixdown.ca)
20:48.31aandrewhello
20:48.48aandrewis it possible to use the ftrace framework to debug the low level I2C device driver?
20:49.17aandrewI've got it enabled and get very pretty results but the actual calls to my driver (in i2c-cadence.c) don't show up
20:50.01aandrewe.g. i2cdev_write -> i2c_master_send -> i2c_transfer -> i2c_lock_adapter -> i2c_mux_master_xfer -> i2c_mux_gpio_select -> i2c_mux_gpio_set is shown
20:50.36aandrewbut I never see cdns_i2c_master_xfer show up
20:50.49aandrewit's clearly being called as I'm seeing i2c traffic
20:51.02aandrewand yes *cdns* is enabled in the filter :-)
20:52.30aandrewin fact the cadence drivers for spi and uart and everythign are enabled in the filter since *cdns* pulls in a lot, and yet none of it is showing up in the trace
20:56.05aandrewhm, rebooted and tried again and now it's showing up... nevermind.
22:49.54wmataandrew: heehee

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