diff options
Diffstat (limited to 'kernel/power/Kconfig')
| -rw-r--r-- | kernel/power/Kconfig | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index ce0dfb8f4a4..ae44a70aae8 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -36,6 +36,24 @@ config PM_DEBUG code. This is helpful when debugging and reporting various PM bugs, like suspend support. +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 SOFTWARE_SUSPEND bool "Software Suspend" depends on PM && SWAP && (X86 && (!SMP || SUSPEND_SMP)) || ((FRV || PPC32) && !SMP) @@ -82,18 +100,6 @@ 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 |