Searching for No Userspace Software Suspend Support In The Kernel information? Find all needed info by using official links provided below.
http://suspend.sourceforge.net/
03 Apr 2006 - Support for Userspace SW Suspend hits mainline. Linus has commited the infrastructure needed for suspending the system from userspace into his GIT tree. Expect the first release of the tools before 2.6.17 is out.
https://www.kernel.org/doc/html/latest/power/interface.html
‘freeze’ (Suspend-to-Idle) ‘standby’ (Power-On Suspend) ‘mem’ (Suspend-to-RAM) ‘disk’ (Suspend-to-Disk) Suspend-to-Idle is always supported. Suspend-to-Disk is always supported too as long the kernel has been configured to support hibernation at all (ie. CONFIG_HIBERNATION is set in the kernel configuration file).
https://www.kernel.org/doc/html/latest/arm/samsung-s3c24xx/suspend.html
A board can do its own setup before calling s3c_pm_init, if it needs to setup anything else for power management support. There is currently no support for over-riding the default method of saving the resume address, if your board requires it, then contact the maintainer and discuss what is required.
https://stackoverflow.com/questions/12571609/catch-suspend-resume-in-linux-from-user-space
Is is possible to catch a signal from the Linux Kernel when some user is suspending from the hardware, not from some other application? This means that, catch a signal when a user click a suspend button (or close the lid). I saw that APM, for example, had to implement kernel and user space software …
https://www.kernel.org/doc/html/latest/driver-api/rfkill.html
It also notifies userspace about device addition and removal. The API is a simple read/write API that is defined in linux/rfkill.h, with one ioctl that allows turning off the deprecated input handler in the kernel for the transition period. Except for the one ioctl, communication with the kernel is done via read() and write() of instances of ‘struct rfkill_event’.
https://support.embeddedarm.com/support/solutions/articles/22000202865-userspace-vs-kernel-space-drivers
Apr 20, 2017 · Rather than relent to putting a ADC/DAC API in the kernel because it uses IRQs, we prefer a mechanism to export generic IRQ services to userspace. Rather than put a custom SD driver in the kernel because it needs to show up in the system as a block device to be mountable, we prefer to use a mechanism to create block devices from userspace.
https://www.kernel.org/doc/html/latest/power/apm-acpi.html
User-space Daemons¶. Both APM and ACPI rely on user-space daemons, apmd and acpid respectively, to be completely functional. Obtain both of these daemons from your Linux distribution or from the Internet (see below) and be sure that they are started sometime in the system boot process.
https://www.kernel.org/doc/html/latest/power/index.html
The Linux kernel user’s and administrator’s guide; Kernel Build System; The Linux kernel firmware guide; The Linux kernel user-space API guide; Working with the kernel development community; Development tools for the kernel; How to write kernel documentation; Kernel Hacking Guides; Linux Tracing Technologies; Kernel Maintainer Handbook ...
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