So, here is the RFC series implementing the userspace governor. This is merely meant as a proof-of-concept, so my patch series will have the same capabilities as Vladimir's series. It does work (for me (tm)) and shows how the bottom half handling can be better put to the watchdog device code, making the pretimeout code a lot simpler. However, I am not sure if a uevent on the watchdog device is a good userspace notification. Setting the governor is done vis sysfs, okay. But setting the pretimeout is done via the character device, so I wonder if the response shouldn't go there as well? But do we want to introduce select/poll support only for pretimeouts? Other ideas? Thanks, Wolfram Vladimir Zapolskiy (1): watchdog: pretimeout: add userspace notifier pretimeout governor Wolfram Sang (1): watchdog: dev: add helper for creating uevent on dev drivers/watchdog/Kconfig | 16 +++++++++++ drivers/watchdog/Makefile | 1 + drivers/watchdog/pretimeout_userspace.c | 47 +++++++++++++++++++++++++++++++++ drivers/watchdog/watchdog_dev.c | 20 ++++++++++++++ drivers/watchdog/watchdog_pretimeout.h | 2 ++ include/linux/watchdog.h | 3 +++ 6 files changed, 89 insertions(+) create mode 100644 drivers/watchdog/pretimeout_userspace.c -- 2.8.1
