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-rw-r--r--kernel/power/Kconfig13
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index fc311a4673a..857b4fa0912 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -38,13 +38,22 @@ config PM_DEBUG
config PM_TRACE
bool "Suspend/resume event tracing"
- depends on PM && PM_DEBUG && X86_32
- default y
+ 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)