2010/4/29 Rafael J. Wysocki <rjw@xxxxxxx>: > On Thursday 29 April 2010, Arve Hjønnevåg wrote: >> 2010/4/28 Rafael J. Wysocki <rjw@xxxxxxx>: >> > On Thursday 29 April 2010, Arve Hjønnevåg wrote: >> >> 2010/4/28 Rafael J. Wysocki <rjw@xxxxxxx>: >> >> > On Wednesday 28 April 2010, Arve Hjønnevåg wrote: >> >> >> Add a misc device, "suspend_blocker", that allows user-space processes >> >> >> to block auto suspend. The device has ioctls to create a suspend_blocker, >> >> >> and to block and unblock suspend. To delete the suspend_blocker, close >> >> >> the device. >> >> >> >> >> >> Signed-off-by: Arve Hjønnevåg <arve@xxxxxxxxxxx> >> >> > ... >> >> >> + >> >> >> +#include <linux/fs.h> >> >> >> +#include <linux/miscdevice.h> >> >> >> +#include <linux/module.h> >> >> >> +#include <linux/uaccess.h> >> >> >> +#include <linux/slab.h> >> >> >> +#include <linux/suspend_blocker.h> >> >> >> +#include <linux/suspend_block_dev.h> >> >> >> + >> >> >> +enum { >> >> >> + DEBUG_FAILURE = BIT(0), >> >> >> +}; >> >> >> +static int debug_mask = DEBUG_FAILURE; >> >> > >> >> > What's the exact purpose of this? >> >> >> >> To show errors returned to user space. I can turn it off by default if you want. >> > >> > Not necessarily, but why is it a mask? It looks like a 0/1 thing would be >> > sufficient. >> >> I may want to add a bit to print all user-space block and unblock calls. > > Alternatively, you can add a new parameter for that, which I think I would prefer. > I use a bit-mask in the main suspend blocker code. This makes it easy to turn on or off all the messages. -- Arve Hjønnevåg _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm