diff options
Diffstat (limited to 'kernel/power/Kconfig')
| -rw-r--r-- | kernel/power/Kconfig | 58 |
1 files changed, 45 insertions, 13 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index ce0dfb8f4a4e..825068ca3479 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -36,9 +36,49 @@ config PM_DEBUG code. This is helpful when debugging and reporting various PM bugs, like suspend support. +config DISABLE_CONSOLE_SUSPEND + bool "Keep console(s) enabled during suspend/resume (DANGEROUS)" + depends on PM && PM_DEBUG + default n + ---help--- + This option turns off the console suspend mechanism that prevents + debug messages from reaching the console during the suspend/resume + operations. This may be helpful when debugging device drivers' + suspend/resume routines, but may itself lead to problems, for example + if netconsole is used. + +config PM_TRACE + bool "Suspend/resume event tracing" + depends on PM && PM_DEBUG && X86_32 && EXPERIMENTAL + default n + ---help--- + This enables some cheesy code to save the last PM event point in the + RTC across reboots, so that you can debug a machine that just hangs + during suspend (or more commonly, during resume). + + To use this debugging feature you should attempt to suspend the machine, + then reboot it, then run + + dmesg -s 1000000 | grep 'hash matches' + + CAUTION: this option will cause your machine's real-time clock to be + set to an invalid time after a resume. + +config PM_SYSFS_DEPRECATED + bool "Driver model /sys/devices/.../power/state files (DEPRECATED)" + depends on PM && SYSFS + default n + help + The driver model started out with a sysfs file intended to provide + a userspace hook for device power management. This feature has never + worked very well, except for limited testing purposes, and so it will + be removed. It's not clear that a generic mechanism could really + handle the wide variability of device power states; any replacements + are likely to be bus or driver specific. + config SOFTWARE_SUSPEND bool "Software Suspend" - depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP) + depends on PM && SWAP && ((X86 && (!SMP || SUSPEND_SMP) && !X86_PAE) || ((FRV || PPC32) && !SMP)) ---help--- Enable the possibility of suspending the machine. It doesn't need ACPI or APM. @@ -60,6 +100,10 @@ config SOFTWARE_SUSPEND For more information take a look at <file:Documentation/power/swsusp.txt>. + (For now, swsusp is incompatible with PAE aka HIGHMEM_64G on i386. + we need identity mapping for resume to work, and that is trivial + to get with 4MB pages, but less than trivial on PAE). + config PM_STD_PARTITION string "Default resume partition" depends on SOFTWARE_SUSPEND @@ -82,18 +126,6 @@ config PM_STD_PARTITION suspended image to. It will simply pick the first available swap device. -config SWSUSP_ENCRYPT - bool "Encrypt suspend image" - depends on SOFTWARE_SUSPEND && CRYPTO=y && (CRYPTO_AES=y || CRYPTO_AES_586=y || CRYPTO_AES_X86_64=y) - default "" - ---help--- - To prevent data gathering from swap after resume you can encrypt - the suspend image with a temporary key that is deleted on - resume. - - Note that the temporary key is stored unencrypted on disk while the - system is suspended. - config SUSPEND_SMP bool depends on HOTPLUG_CPU && X86 && PM |
