Merge git://git.infradead.org/mtd-2.6

[linux-2.6-omap-h63xx.git] / kernel / power / Kconfig

diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index ce0dfb8f4a4ecb0dc7d688924272eb255e392456..857b4fa091244758b5fc0976cf44d58f914f20ec 100644 (file)
--- 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)